STMicroelectronics AEK-POW-SPSB081 User Manual

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UM3269
User manual
Getting started with the AEK-POW-SPSB081 automotive power management IC
evaluation board with LIN and CAN-FD
Introduction
Embedded application processors and components in complex systems require supply with multiple power rails and multiple
power domains. Power management integrated circuits (PMICs) integrate multiple voltage regulators and control circuits into a
single chip, thus representing an excellent option to implement complete and integrated power supply solutions. Designing with
PMICs simplifies power management in complex embedded systems, optimizes power consumption and extends battery life. In
addition, they reduce circuit board space and component count.
PMICs are an excellent fit for embedded processing in a wide range of applications such as body control modules, seat control
modules, sunroof modules, tailgate modules, door modules, light control modules, gear shifters, steering columns, fuel pumps,
electric vehicles, and autonomous vehicles.
The AEK-POW-SPSB081 is a power management IC evaluation board with enhanced power management functionalities, such
as various standby modes to minimize power consumption and, featuring programmable local and remote wake-up capability.
The board is based on the SPSB081 power management system IC, which embeds one low-drop voltage regulator (V1) to
supply the system microcontroller and another voltage regulator (V2) to supply external peripheral loads such as sensors.
V1 has a fixed rail of 5 V and features overvoltage detection and protection solutions, while V2 works in two different ways: as a
voltage tracker of V1, or as an independent voltage regulator programmable via SPI with 5 V or 3.3 V.
Four additional high-side drivers allow supplying and driving LEDs and sensors. These high-side drivers are driven via SPI and
can be configured in four different modes: OFF, ON, TIMED (with programmable time), and PWM (configurable via device
registers).
Moreover, you can set the high-side driver outputs to be driven by the DIR pin. This functionality allows the user to generate
custom PWM signals for the high-side outputs.
All outputs are short-circuit protected and able to detect open-load.
The communication protocol used to configure SPSB081 registers is the SPI, implemented with four wires (MISO, MOSI, CSN,
and CLK).
The AEK-POW-SPSB081 also exploits embedded LIN and CAN transceivers, allowing the board to bridge between the
microcontroller and the CAN and LIN communication lines.
An external microcontroller (for example, AEK-MCU-C1MLIT1) has to refresh periodically a watchdog TRIG bit in the SPSB081
register via SPI to maintain the device in active mode. In case of watchdog failure, the device enters the V1_standby (for energy
saving). To wake it up, send a pulse to the WU1_IN pin or just press the S1 button. By placing a jumper on JP1, the device
enters the debug mode where the watchdog is inactive.
Three demos are available in the AutoDevKit ecosystem, each of them based on a different SPC58 microcontroller evaluation
board connected with an AEK-POW-SPSB081.
The demos show how to use the outputs, configuring them in four different modes: OUT 1 for ON, OUT 2 for TIMED, OUT 3 for
PWM and OUT 4 for DIR.
V2 is configured as a linear regulator and changes settings alternatively every 2.5 s between 3.3 V and 5 V.
CAN connector and CAN_rx/CAN_tx pins are connected to the microcontroller board.
The CAN test signals transmitted from the microcontroller every five seconds can be effectively decoded through CAN_H/
CAN_L pins.
Warning:
The AEK-POW-SPSB081 evaluation board has not to be used in a vehicle as it is designed for R&amp;D
laboratory use only.
UM3269 - Rev 2 - April 2024
For further information contact your local STMicroelectronics sales office.
www.st.com
UM3269
Figure 1. AEK-POW-SPSB081 evaluation board
UM3269 - Rev 2
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UM3269
Hardware overview
1
Hardware overview
1.1
Board main components
1. The CN6 connector hosts the following pins (from top to bottom): GND, NINT, CM_OUT, DIAG, NRST, DIR,
W1
2. Wake-up button
3. P1 connector (GND and VBAT)
4. CN3 connector (V2, GND, and V1)
5. P2 connector hosts (from top to bottom): GND and four outputs (OUT1, OUT2, OUT3, and OUT4)
6. SPSB081 automotive-grade PMIC
7. SPI connector
8. CAN-FD connector
9. CN5 connector with two CAN Tx/Rx pins (on the left side) and two LIN Tx/Rx pins (on the right side)
10. LIN connector
Figure 2. AEK-POW-SPSB081 board components
2
3
1
6
7
Note:
1.1.1
4
8
5
9
10
In the CN4 connector for SPI, the second and third pin labels have been inverted. The correct
label for the second pin is MISO, while the correct label for the third pin is MOSI.
SPSB081
The SPSB081 is a power management system IC providing electronic control modules with enhanced power
management functionality, including various standby modes to minimize the power consumption with
programmable local and remote wake-up capability, as well as LIN and CAN FD physical communication layers.
The device has one low-drop voltage regulator to supply the system microcontroller and one voltage tracker to
supply external peripheral loads such as sensors. V1 is available with a fixed rail (5 V or 3.3 V) and V1
overvoltage detection and protection solution, while V2 is a tracker voltage regulator of V1, programmable by SPI
with 5 V or 3.3 V. Moreover, the device features four high-side drivers to supply LEDs and sensors. All outputs are
short-circuit (SC) protected and implement open-load diagnosis. The STMicroelectronics standard SPI interface
allows control and diagnosis of the device and enables generic software development.
UM3269 - Rev 2
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UM3269
Hardware overview
1.1.2
SPSB081 block diagram
Figure 3. SPSB081 block diagram
1.1.3
Pin description and mapping on board connectors
Table 1. Board pin functions
SPBS0815
Board
VBAT
P1
Board power supply (12V).
I
WU1
CN6
Wake-up inputs 1: input pin for static or cyclic monitoring of external contacts.
I
Description
I/O
DIR → direct HS drive.
DIR
CN6
V2
CN3
By enabling DIR functionality via AutoDevKit driver APIs, when the DIR pin is
driven by a GPIO of an external micro, it is possible to control one or more
OUTx pins.
I
Voltage regulator (5V or 3.3V) or tracker (5V): supply for external loads.
When high, the D11 LED diode turns blue.
O
V2 pin is protected against reverse supply.
UM3269 - Rev 2
OUT4
P2
OUT3
P2
High-side-driver output to drive LEDs, sensors or to supply contacts.
When high, the D6 LED diode turns green.
High-side-driver output to drive LEDs, sensors or to supply contacts.
O
O
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UM3269
Hardware overview
SPBS0815
Board
Description
I/O
When high, the D7 LED diode turns green.
High-side-driver output to drive LEDs, sensors or to supply contacts.
OUT2
P2
OUT1
P2
CAN_TX
CN5
CAN transmits data input.
I
LIN_TX
CN5
LIN transmits data input.
I
CM_OUT
CN6
Current monitor output: depending on the selected multiplexer bits of the
control register, this output gives an image of the instant current through the
corresponding high-side driver with a fixed ratio (VCM=(Ioutx/990) * Rsense).
O
DIAG
CN6
Logical error indication output. Active low.
O
NINT
CN6
Indicates device errors, warning, and local/remote wake-up events.
O
CAN_RX
CN5
CAN receives data output (push-pull output stages).
O
LIN_RX
CN5
RxDL → LIN receives data output.
O
CLK
CN4
SPI: serial clock input.
I
MOSI
CN4
SPI: serial data output (push pull output stage).
O
MISO
CN4
SPI: serial data input.
I
CSN
CN4
SPI: chip select not input.
I
NRST
CN6
NReset output to microcontroller; internal pull-up of 25 kΩ typical (active low
output stage).
O
V1
CN3
CAN_L
CN1
CAN low level voltage I/O.
I/O
CAN_H
CN1
CAN high level voltage I/O.
I/O
LIN
CN2
LIN bus line.
I/O
GND
P1, P2,
CN2,
Ground pin.
P
When high, the D8 LED diode turns green.
High-side-driver output to drive LEDs, sensors or to supply contacts.
When high the D9 LED diode turns green.
Voltage regulator (5 V supply).
When high, the D12 LED diode turns blue.
O
O
O
CN6
1.2
Board operating range
The AEK-POW-SPSB081 has been designed and tested with VBAT = 12 V. Even if the SPSB0815 has a wider
operating range, it is recommended not to exceed this threshold, to avoid LED overcharge or board overheating.
Anyway, even if the device goes beyond the operative value, it is able to recover with no damage or degradation.
UM3269 - Rev 2
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Functional description
2
Functional description
2.1
Voltage regulators
The SPSB081 features a fully protected low drop voltage regulator (V1) and another low dropout voltage regulator
(V2), which can work as voltage tracker, or as LDO, based on its configuration.
These regulators are designed for very fast transient response and do not require electrolytic output capacitors for
stability.
Table 2. Voltage regulator configuration
Configuration
3
P/N
SPSB081
V1 output voltage
5.0 V
V2 output voltage
V2 output voltage
(linear case)
(tracking case)
3.3 V or 5 V
V1 voltage tracker (5 V)
The voltage regulator V2 can be configured via AutoDevKit driver APIs as a linear independent LDO (V2_TKR =
0, default) or as a tracker of the V1 voltage regulator (V2_TKR = 1).
2.1.1
Voltage regulator: V1
The V1 voltage regulator provides 5 V supply voltage (configurable by OTP) and up to 250 mA continuous load
current to supply the system microcontroller and the integrated CAN transceiver. The V1 regulator is embedded in
the power management and fail-safe functionality of the device and operates according to the selected operating
mode.
In addition, the V1 regulator supplies the device internal loads. The voltage regulator is protected against overload
and overtemperature.
In case the device temperature exceeds the TSD1 threshold as defined in the device datasheet, all outputs
(OUTx, V2, LIN, CAN) are deactivated except V1 regulator, which remains on. LIN and CAN transceivers are
forced in &quot;receive only&quot; mode. Hence, the microcontroller has the possibility of interaction or error logging. If the
chip temperature exceeds the TSD2 threshold (TSD2 &gt; TSD1) according to the values defined in the datasheet,
V1 is deactivated and all wake-up sources (CAN, LIN, WU1, WU2, and timer) are disabled. After tTSD, the
voltage regulator automatically restarts. If the restart fails seven times in a minute, the SPSB081 is forced into
VBAT_standby mode.
In case of overvoltage, an internal pulldown circuit is activated to limit the current accumulated in the external
capacitor.
2.1.2
Voltage regulator: V2
The SPSB081 embeds a 5 V low dropout tracking regulator designed to provide an output voltage that closely
tracks (&plusmn;20 mV) the V1 reference input while delivering up to 100 mA on the V2 output pin. The V2 voltage
regulator can be configured through the V2_TKR bit in CR2 as a linear independent LDO (V2_TKR = 0, default) or
as a tracker of the V1 voltage regulator (V2_TKR = 1).
The V2 can be configured as a tracker of the V1 only at the same voltage output level (5 V for SPSB081). The
tracking regulator is protected against overload, overtemperature, short-circuit (short to ground and battery supply
voltage), and reverse biasing.
2.1.3
Voltage regulators failure
The output voltages of V1 and V2 regulators are monitored.
In case of drop below the V1, V2 fail thresholds (V1,2 &lt; V1, 2FAIL, for t &gt; tV1,2FAIL), the failure bits V1FAIL,
V2FAIL (SR2) are latched. These failure bits can be cleared by a dedicated SPI command.
2.1.4
Short to ground detection
At turn-on of V1 and V2 regulators, a short-to-GND condition is detected by monitoring the regulator output
voltage.
If V1 or V2 is below the V1FAIL, (V2FAIL) thresholds for t &gt; tV1SHORT (t &gt; tV2SHORT) after turn-on, the
SPSB081 will identify a short-circuit condition at the related regulator output and the regulator will be switched off.
UM3269 - Rev 2
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UM3269
Functional description
In the case of V1 short-to-GND, the device enters VBAT_standby mode automatically. BFORCED_SLEEP_TSD2/
V1SC (SR1) and V1FAIL (SR2) bits are set.
In case of a V2 short-to-GND failure, the V2SC (SR2) and V2FAIL (SR2) bits are set.
Once the output voltage of the corresponding regulator exceeds the V1FAIL (V2FAIL) threshold, the short-toground detection is disabled. In case of a short-to-ground condition, the regulator is switched off due to thermal
shutdown.
For further details, refer to the SPSB081 datasheet available at www.st.com.
2.2
Simplified state machine
Figure 4. State machine
The AEK-POW-SPSB081 finite state machine includes the following operating modes:
•
•
•
•
•
2.2.1
Active mode: normal operating mode
SW-debug mode: software debugging
V1_standby mode: low power mode
Fail-safe-mode: safety mode triggered by failures
VBAT_standby mode: ultralow power mode
Active mode
All functionalities are available. The AEK-POW-SPSB081 can be controlled via SPI.
2.2.2
SW-debug mode
To enter this mode, close the JP1 jumper. When the FSM enters this mode, the watchdog is disabled.
Note:
In this mode, you can exploit all the potentialities of the debugger application, by adding views on all the
variables. It is possible to display in real-time how register values change during runtime, without compromising
the operative flow of the running code due to watchdog failures.
2.3
Fail-safe mode
2.3.1
Temporary failures
SPSB081 enters fail-safe mode in case of:
•
•
•
Watchdog failure
V1 failure (V1 &lt; VRTX for t &gt; tV1FS)
Thermal shutdown TSD2
The fail-safe functionality is also available in V1_Standby mode. During V1_Standby mode the fail-safe mode is
entered in the following cases:
•
•
UM3269 - Rev 2
Watchdog failure (if watchdog still running due to IV1 &gt; ICMP)
V1 failure (V1 &lt; VRTX for t &gt; tV1FS)
page 7/48
UM3269
Functional description
•
Thermal shutdown TSD2
In fail-safe mode, the device returns to a fail-safe state. The fail-safe condition is indicated to the system in the
global status byte. The conditions during the fail-safe mode are:
•
•
•
•
All outputs and V2 are turned off
All control registers are set to default values
Write operations to control registers are blocked until the fail-safe condition is cleared (see table 4). Only
the following bits are not write-protected:
–
CR1 (0x01):
•
◦
TRIG
◦
CAN_ACT
CR2 (0x02):
•
–
Timer settings (bits 8…13 and bits 16…21)
CR5 (0x05):
•
–
OUT1_x (bits 0…2)
–
OUT2_x (bits 4…6)
–
OUT3_x (bits 8…10)
–
OUT4_x (bits 12…14)
CR9 (0x09) to CR11 (0x0B)
•
–
PWM frequency and duty cycles
Config register (0x3F)
–
–
V2_0
V2_1
The LIN transmitter and the CAN FD transceiver remain on. Wake-up is enabled.
If the device enters the fail-safe mode, it remains active until the fail-safe condition is removed and the fail-safe is
read via SPI. The following table shows the actions to exit fail-safe mode, depending on the root cause.
Table 3. Temporary failures conditions
Failure source
Microcontroller
(oscillator)
Failure condition
Watchdog
Early write failure or
expired window
V1
Undervoltage
Temperature
TJ &gt; TSD2
Diagnosis
Exit from fail-safe
mode
FS (global status byte) = 1 WDFAIL (SR1) = 1
WDFAIL_CNT_x (SR1) = n+1
TRIG = 1 during long
open window read
and clear SR1
FS (global status byte) = 1 V1UV (SR1) = 1(1)
V1 &gt; VRTX
V1FAIL (SR2) = 1(2)
Read and clear SR1
FS (global status byte) = 1 TW (SR2) = 1
TJ &lt; TSD2
TSD1 (SR1) = 1 TSD2 (SR1) = 1
Read and clear SR1
1. V1UV bit in SR1 is set for t &gt; tuv1 (16 &micro;s). Fail-Safe bit GSR/FS is set only after tRD (NRESET low pulse).
2. If V1 &lt; V1FAIL (for t &gt; tV1FAIL). The fail-safe bit is in the global status register.
2.3.2
Non recoverable failures - Forced in VBAT_standby mode
If the fail-safe condition persists and all attempts to return to normal system operation fail, the SPSB0815 is
forced into VBAT_standby mode to prevent damaging the system. The VBAT_standby mode can be terminated by
any wake-up source. The root cause of the VBAT_standby is indicated in the SPI status registers.
In VBAT_standby mode, all control registers are set to power on default. The VBAT_standby mode is entered in
case of:
•
•
•
•
UM3269 - Rev 2
Multiple watchdog failures: FORCED_SLEEP_WD = 1 (15x watchdog failure)
Multiple thermal shutdowns 2: FORCED_SLEEP_TSD2/V1SC = 1 (7x TSD2)
V1 short at turn-on (V1 &lt; V1FAIL for t &gt; tV1SHORT): FORCED_SLEEP_TSD2/V1SC (SR 1) = 1
Loss of ground: SGNDLOSS(SR6) = 1
page 8/48
UM3269
Functional description
Table 4. Non-recoverable failure conditions
Failure source
Failure condition
Diagnosis
Exit from fail-safe
mode
Wake-up
Microcontroller
(oscillator)
15 consecutive
watchdog failures
V1
Short at turn-on
V1
Overvoltage
FS (global status byte) = 1 WDFAIL (SR 1) = 1
FORCED_SLEEP_WD (SR 1) = 1
TRIG = 1 during long
open window read and
clear SR1
FS (global status byte) = 1 V1FAIL = 1
Wake-up
FORCED_SLEEP_TSD2/V1SC (SR 1) = 1
Read and clear SR1
FS (global status byte) = 1
FORCED_SLEEP_V1OV (SR2) = 1
Wake-up
Read and clear SR1
FS (global status byte) = 1 TW (SR 2) = 1
Temperature
7 times TSD2
TSD1 (SR 1) = 1
Wake-up
TSD2 (SR 1) = 1
Read and clear SR1
FORCED_SLEEP_TSD2/V1SC (SR 1) = 1
SGND
2.3.3
Loss of ground at
SGND pin
FS (global status byte) = 1 SGNDLOSS (SR 6)
=1
Wake-up
Read and clear SR1
V1_standby mode
The transition from active mode to V1_standby mode is controlled via SPI (STBY_SEL bit and GO_STBY bit in
CR2).
To supply the microcontroller in a low-power mode, the V1 voltage regulator remains active.
After the V1_standby command (CSN low to high transition), the device enters V1_standby mode immediately
and the watchdog starts a long open window (tLW). The watchdog is deactivated as soon as the V1 load current
drops below the ICMP threshold (IV1 &lt; ICMP).
The V1 load current monitoring can be deactivated by setting ICMP = 1. In this configuration, the watchdog is
deactivated upon transition into V1_standby mode without monitoring the V1 load current.
LIN and CAN transmitters are switched off.
OUT1, OUT2, OUT3, OUT4, and V2 voltage regulators remain in the configuration programmed before the
standby command.
Even though LIN and CAN transceivers are switched off, they can still wake up the microcontroller.
2.3.4
VBAT_standby mode
The transition from active mode to VBAT_standby mode is initiated by an SPI command (STBY_SEL bit and
GO_STBY bit in CR2).
In VBAT_standby mode, V1 and V2 voltage regulators, the power outputs as well as LIN and CAN transmitters,
are switched off.
A NReset pulse is generated and last asserted low upon wake-up from VBAT_standby mode and until 2 ms after
LDO1 is fully operative.
2.3.5
Wake-up from standby modes
A wake-up from standby mode switches the device to active mode. This can be initiated by one or more of the
events listed in the table below.
Table 5. Wake-up source
Wake-up source
LIN bus activity
It can be disabled by SPI
CAN bus activity
It can be disabled by SPI
Level change of WU
UM3269 - Rev 2
Description
It can be configured or disabled by SPI
page 9/48
UM3269
Functional description
Wake-up source
Description
The device remains in V1_standby mode but the watchdog is enabled (if ICMP = 0). No
interrupt is generated
IV1 &gt; ICMP
Programmable by SPI:
•
Timer interrupt/ wake-up of μC
by TIMER
V1_standby mode:
The device wakes up and an interrupt signal is generated at NINT when the programmable
time-out has elapsed
•
VBAT_standby mode:
The device wakes up after the programmable timer expiration. V1 regulator is turned on
and NReset signal is generated when the programmable time-out has elapsed
SPI access
Always active (except in VBAT_standby mode) Wake-up event: CSN falling edge
To prevent the system from a deadlock condition (no wake-up from standby possible), a configuration where all
wake-up events are disabled, is not allowed.
Accordingly, if the following condition is set by SPI:
•
•
•
•
CAN_WU_EN = 0
LIN_WU_EN = 0
WU1_EN = 0
WU2_EN = 0
the effect is to put all these register bits in their default condition:
•
•
•
•
CAN_WU_EN = 1
LIN_WU_EN = 1
WU1_EN = 1
WU2_EN = 1
Table 6. Functional overview
Operating modes
Function
Active mode
V1_standby static
mode (cyclic sense)
VBAT_standby static
mode (cyclic sense)
Voltage regulator V1
VOUT = 5 V/3.3 V
On
On(1)
Off
Voltage regulator V2
VOUT = 5 V/3.3 V
On/Off(2)
On(2)/Off
On(2)/Off
Reset generator
-
On
On
Off
Window watchdog
V1 monitor
On
Off (On if IV1 &gt; ICMP
and ICMP = 0)
Off
-
Off
Active(3)
Active(3)
HS-cyclic supply
Oscillator time base
On/Off
On(2)/Off
On(2)/Off
LIN
LIN ISO 17987-4/2016
On(2)
Off(4)
Off(4)
CAN FD
-
On/Off(5)
Off(4)
Off(4)
Oscillator
-
On
On/Off(6)
On/Off(6)
VS monitor
-
On(7)
On/Off(7)
On/Off(7)
OUT1 (P-channel HS)
-
On/Off(2)
On/Off(2)
On/Off(2)
OUT2 (P-channel HS)
-
On/Off(2)
On/Off(2)
On/Off(2)
OUT3 (P-channel HS)
-
On/Off(2)
On/ Off(2)
On/Off(2)
OUT4 (P-channel HS)
-
On/Off(2)
On/ Off(2)
On/Off(2)
Thermal shutdown
TSD2
-
On
On
Off
Wake-up
UM3269 - Rev 2
Comments
page 10/48
UM3269
Functional description
Operating modes
Function
Comments
Thermal shutdown
TSD1x (for P-channel
HS)
-
Active mode
V1_standby static
mode (cyclic sense)
VBAT_standby static
mode (cyclic sense)
On
On(8)
On/Off(2)
1. Supply the processor in low currentmode.
2. According to SPI setting.
3. Unless disabled by SPI.
4. The bus state is internally stored when going to standby mode. A change of bus state will lead to a wake-up after exceeding
the internal filter time (if wake-up by LIN or CAN is not disabled by SPI).
5. After power-on, the CAN-FD transceiver is in ‘CAN Trx standby’ mode. It is activated by SPI command (CAN_ACT = 1).
6. ON, if at least one of the following is enabled: cyclic sense, OUT1, OUT2, OUT3, OUT4, V2.
7. ON when at least one OUTx is enabled and OFF when all outputs are disabled.
8. V1, V2, OUT1, OUT2, OUT3, and OUT4 are thermal monitored.
2.4
V1 overvoltage detection
SPSB081 protects the MCU against voltages over 5 V that could harm its functionalities. For this purpose, to sink
the exceeding current accumulated in the external capacitor usually directed to the MCU, the SPSB081 uses an
internal pulldown circuit, where the output current flows through the pulldown resistor to the ground. If the bit
V1_OVP = 1, the overvoltage protection circuit is enabled in CR2. If V1_OVP = 0 there is no overvoltage
protection anymore.
Two thresholds run the overvoltage event.
When SPSB081 detects an overvoltage event on the V1 pin:
•
•
If V1OV_TH1≤ V1 &lt; V1OV_TH2 → V1_OV status flag is raised after tFILTER1 and at the same time NINT is
pulled low for 56 μs.
If V1OV_TH2 ≤ V1 &lt; 6.5 V → It causes a nonrecoverable failure, and the device is forced to VBAT standby
mode (V1 is switched OFF, and FORCED_SLEEP_V1OV (SR2) is raised after tOV1FILTER2). The internal
pull-down transistor, which will discharge the decoupling capacitor through the RDISCHARGE, is activated.
If the VBAT stdby is caused by an output overvoltage on V1, the status flag remains set (V1_OV = 1).
2.5
Power outputs (OUT1, OUT2, OUT3, OUT4)
There are four standalone high-side outputs (OUT1, OUT2, OUT3, and OUT4) to drive LEDs, for example, or to
supply contacts. These outputs can be activated in standby modes.
All high-side outputs switch off in case of:
•
•
•
•
•
VS overvoltage and undervoltage
Overcurrent (only the impacted high-side output)
Overtemperature (TSD1)
Fail-safe event
Loss of ground at SGND pin
In the case of overcurrent or overtemperature (TSD1 (SR1)) condition, the drivers will switch off. The related
status bit is latched and can be read and optionally cleared by SPI. The drivers remain off until the status is
cleared.
In case of overvoltage and undervoltage conditions, the drivers are switched off. The relative status bit is latched
and can be read and optionally cleared by SPI. If the VS_LOCK_EN bit is set to ‘1’, the drivers remain off
until the status is cleared. If the VS_LOCK_EN bit is set to ‘0’, the drivers switch on automatically if the error
condition disappears. Undervoltage and overvoltage shutdowns can be disabled by setting &lt; VS_UV_SD_EN &gt;
respectively &lt; VS_OV_SD_EN &gt; to ‘0’. In case of open-load condition, the appropriate status register (in SR4) is
set. The status can be read and optionally cleared by SPI. The high-side outputs are not switched off in case of
open-load condition.
Note:
UM3269 - Rev 2
The maximum voltage and current applied to the high-side outputs are specified in the ‘absolute maximum
ratings’. Appropriate external protection may be required in order to respect these limits under application
conditions.
page 11/48
UM3269
Functional description
Each of the standalone high-side driver outputs OUT1..4 can be also driven either with an internal generated
PWM signal or with an internal timer. OUT1..4 can be also directly driven with the DIR pin.
2.6
Open-load detection
The open-load detection monitors the load current in each activated output stage. If the load current is below the
open- load detection threshold (IOLDx) for at least tFOL, the corresponding open-load bit is set in the status
register.
2.7
Overcurrent detection
In the case of an overcurrent condition, a status flag is set in the corresponding status register. If the overcurrent
signal is valid for at least tBLK, the overcurrent flag is set, and the corresponding driver switches off to reduce the
power dissipation and to protect the integrated circuit. If the overcurrent recovery bit of the output is cleared, the
microcontroller has to clear the status bits to reactivate the corresponding driver.
2.8
Current monitor
The current monitor sources a current image of the power stage output current at the current monitor pin, which
has a fixed ratio of the instantaneous current of the selected high-side driver.
The reference formula is VCM=(I_OUT_x/990)*Rsense with Rsense = 27 kΩ
The signal at output CM is blanked after switching on the driver until correct settlement of the circuitry. Using the
AutoDevkit driver APIs, it is necessary to select which output is multiplexed to the current monitor output CM. The
current monitor output allows a more precise analysis of the actual state of the load rather than the detection of an
open or overload condition. The current monitor output is enabled after the current-monitor blanking time, when
the selected output is switched on. If this output is off, the current monitor output is in high-impedance mode. The
current monitor can be turned on or off by selecting the corresponding setting for the CM on/off bit.
2.9
Constant current mode
For the OUT1, OUT2, OUT3, and OUT4 high-side drivers, the constant current mode (CCM) feature provides
constant current to the related output. The CCM feature is configurable via SPI using AutoDevKit driver APIs;
these bits can be set only if the related driver is in OFF state. When the CCM is enabled, the overcurrent and
short-circuit detection of the related output is switched OFF while its open-load detection is always ON.
The CCM is automatically disabled after an expiration time tCCMTIMEOUT. The allowed sequences are:
•
•
•
Set OUTx_CCM_EN bit, then turn ON the related driver by SPI (the other configurations of the OUTx_y in
CR5 are ignored): driver starts in CCM for tCCMTIMEOUT, then it switches to ON mode and the
OUTx_CCM_EN bit is automatically cleared;
If OUTx_CCM_EN = 1, after driver has been started in ON, PWM, timer modes then CCM bit is ignored;
If OUTx_CCM_EN bit is cleared by the microcontroller before timeout, then the driver is switched to ON
mode.
The short-circuit and overcurrent detection are enabled in ON, PWM, timer and DIR modes, but not in constant
current mode. The default value for the OUTx_CCM_EN bit is 0, that is, the CCM is disabled by default.
For further details on the entire section 2, refer to the SPSB081 datasheet available at www.st.com.
UM3269 - Rev 2
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UM3269
How to use the AEK-POW-SPSB081
3
How to use the AEK-POW-SPSB081
3.1
Applications
The most common application is based on the AEK-POW-SPSB081 used just to supply a microcontroller board.
As soon as the AEK-POW-SPSB081 board is supplied through VBAT, V1 regulator switches to 5 V and the
master unit starts exchanging SPI commands.
Figure 5. Use case 1
Another example could include a sensor board, supplied by the AEK-POW-SPSB081. When VBAT is supplied, V1
[5 V] goes high, and the master unit code starts running. In this case, the AEK-POW-SPSB081 has to be
configured to switch on the V2 regulator, in order to supply the slave unit.
Figure 6. Use case 2
The third example exploits the capability of the board to drive external devices, which need higher currents to be
driven (up to 140 mA).
Four motors can be connected to the four high-side outputs of the AEK-POW-SPSB081, and the master unit is
programmed to drive them by following a predefined logic.
UM3269 - Rev 2
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UM3269
How to use the AEK-POW-SPSB081
Figure 7. Use case 3
Another example takes advantage of the CAN transceiver embedded in the SPSB081, allowing the master to join
a CAN-FD network.
After power-on, by enabling the CAN capabilities, it is possible to exchange CAN-FD messages between the
master unit and any other node of the CAN network.
Figure 8. Use case 4
The last example is similar to the one above but involves the LIN transceiver embedded on the SPSB081, which
allows the microcontroller to communicate with a LIN network.
Figure 9. Use case 5
UM3269 - Rev 2
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UM3269
How to use the AEK-POW-SPSB081
3.2
Using the board
Supply the AEK-POW-SPSB081 with 12 V between VBAT/GND of P1 connector. D12 LED lights up and remains
on.
Figure 10. D12 LED
At power-on, the watchdog starts a long open window. The SPSB081 enters the active mode, setting the registers
at their default value. V1 regulator becomes active and D10 LED lights up in blue.
Figure 11. V1 active
Another long open window starts and the SPSB081 waits for a watchdog refresh.
Note:
UM3269 - Rev 2
This function is periodically managed through a PIT (programmable timer with interrupt) in the AutoDevKit
component library.
If the watchdog does not receive a refresh message of the TRIG bit (watchdog fail) 15 times in a row, the board
enters the VBAT_standby mode.
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UM3269
How to use the AEK-POW-SPSB081
Figure 12. NRST pulses indicating watchdog failure
Figure 13. D12 LED during Vbat_standby mode
To wake up the board from this mode, press S1 button or configure a microcontroller on another board to send a
high signal to WU1 pin.
Figure 14. S1 button
If one of the above wake-up conditions occurs, the board exits from the Vbat_standby mode to enter the active
mode.
Note:
UM3269 - Rev 2
If a jumper is present on JP1, the watchdog is disabled. Then, the board remains in the active mode, unless you
choose an AutoDevKit library API to switch among the finite state machine modes.
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UM3269
AutoDevKit ecosystem
4
AutoDevKit ecosystem
The application development employing the AEK-POW-SPSB081 takes full advantage of the AutoDevKit
ecosystem, whose basic components are:
- AutoDevKit Studio IDE (STSW-AUTODEVKIT)
- PLS UDE and OpenOCD programmers and debuggers
4.1
aek_pow-spsb081_component_rla folder structure
Figure 15. AEK-POW-SPSB081 component folder structure
The cfg folder contains all the configuration files.
The doc folder contains the doxygen documentation.
The lib folder contains the low-level drivers of the SPSB081 and its register map.
The AEK_POW_SPSB081_lld.h contains all the APIs:
•
•
•
•
4.2
to configure the voltage regulators (V1/V2)
to configure the working mode of each OUT pin
to enable/disable CAN/LIN communication
to enable/disable wakeup sources (WU1, CAN, LIN)
Using AEK-POW-SPSB081 in AutoDevKit
In this example, we created an application for the AEK-POW-SPSB081 configured as a slave transceiver. We
used the AEK-MCU-C1MLIT1 as the microcontroller board.
To recreate this scenario, follow the procedure below:
UM3269 - Rev 2
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UM3269
AutoDevKit ecosystem
Step 1.
Create a new SPC5-STUDIO application for the SPC582B series microcontroller and add the
following components:
–
–
–
SPC582Bxx Init Package Component RLA
SPC582Bxx Low Level Drivers Component RLA
AutoDevKit Init Package Component
These components need to be added immediately, or the other components will not be visible.
Figure 16. Adding components
Step 2.
Add the following additional components:
–
AEK-POW-SPSB081 RLA
Figure 17. Adding AEK-POW-SPSB081 component RLA
UM3269 - Rev 2
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UM3269
AutoDevKit ecosystem
Step 3.
Select [AEK-POW-SPSB081 Component RLA] to open the [Application Configuration] window.
Figure 18. Selecting AEK-POW-SPSB081 Component RLA
Step 4.
Click on [+] to add a new element to the board list.
Figure 19. Adding a new element
UM3269 - Rev 2
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UM3269
AutoDevKit ecosystem
Step 5.
Double-click on the newly added element to configure the board.
Figure 20. AEK-POW-SPSB081 configuration
Step 6.
–
–
–
–
–
–
Select DSPI and CS
Select n/a, GPIO or EIRQ for NINT
Select n/a or ADC for CM
Select n/a, GPIO or EIRQ for DIAG
Select n/a, GPIO or EIRQ for NRST
Select n/a or GPIO for DIRSelect n/a or GPIO for WU1
Whenever a value different from “n/a“ is selected for the choosen pin, the allocation procedure will
allocate a corresponding pin of the microcontroller board.
UM3269 - Rev 2
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UM3269
AutoDevKit ecosystem
Step 7.
Click on the “Allocation” button to allocate the AEK-POW-SPSB081 component.
Figure 21. Component allocation
UM3269 - Rev 2
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UM3269
AutoDevKit ecosystem
Step 8.
Click on “Board View” to view the hardware connection between the AEK-MCU-C1MLIT1 board and
the AEK-POW-SPSB081.
Figure 22. Board view
UM3269 - Rev 2
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UM3269
AutoDevKit ecosystem
Step 9.
Create your main application example as follows:
#include &quot;components.h&quot;
#include &quot;AEK_POW_SPSB081_lld.h&quot;
/*
* Application entry point.
*/
intmain(void) {
componentsInit();
irqIsrEnable();
AEK_POW_SPSB081_init();
/* Starting configuration */
AEK_POW_SPSB081_WDT_Time_Config(SPSB081_DEV1,SPSB081_TSW1);
AEK_POW_SPSB081_WU1_Input_Config(SPSB081_DEV1,SPSB081_WU1_PULLDOWN);
AEK_POW_SPSB081_WU1_Input_Filter_Config(SPSB081_DEV1,SPSB081_WU1_FLT_STATIC);
AEK_POW_SPSB081_Enable_Wakeup_WU1(SPSB081_DEV1);
AEK_POW_SPSB081_Disable_Wakeup_WU2(SPSB081_DEV1);
AEK_POW_SPSB081_DIR_WU2_Conf(SPSB081_DEV1,SPSB081_DIR_FUNCT);
AEK_POW_SPSB081_Disable_Wakeup_CAN(SPSB081_DEV1);
AEK_POW_SPSB081_Disable_Wakeup_LIN(SPSB081_DEV1);
AEK_POW_SPSB081_Enable_Diag_Ext(SPSB081_DEV1);
AEK_POW_SPSB081_Disable_V1_ICMP(SPSB081_DEV1);
AEK_POW_SPSB081_V2_Voltage_Config(SPSB081_DEV1, SPSB081_V2_3_3_V);
AEK_POW_SPSB081_V2_Regulator_Config(SPSB081_DEV1, SPSB081_V2_ON_IN_ACTIVE_MODE);
/* Configuring can transceiver to work in Active state*/
AEK_POW_SPSB081_Enable_CAN_Active_mode(SPSB081_DEV1);
/* Configuration example of HS outs 1 2 3 */
AEK_POW_SPSB081_Timer1_Period_Config(SPSB081_DEV1, SPSB081_T1_PER_1000_MS);
AEK_POW_SPSB081_Timer2_Period_Config(SPSB081_DEV1, SPSB081_T2_PER_2000_MS);
AEK_POW_SPSB081_Timer1_On_Time_Config(SPSB081_DEV1, SPSB081_T1_ON_TIME_10_MS);
AEK_POW_SPSB081_Timer2_On_Time_Config(SPSB081_DEV1, SPSB081_T2_ON_TIME_20_MS);
AEK_POW_SPSB081_PWM3_duty_Conf(SPSB081_DEV1, 2);
AEK_POW_SPSB081_PWM3_Freq_Conf(SPSB081_DEV1, SPSB081_PWM3_125HZ);
AEK_POW_SPSB081_OUT1_DrvConfiguration(SPSB081_DEV1, SPSB081_OUT1_TIMER1);
AEK_POW_SPSB081_OUT2_DrvConfiguration(SPSB081_DEV1, SPSB081_OUT2_TIMER2);
AEK_POW_SPSB081_OUT3_DrvConfiguration(SPSB081_DEV1, SPSB081_OUT3_PWM3);
for ( ; ; ) {
/* Manual driving of OUT4 */
AEK_POW_SPSB081_OUT4_DrvConfiguration(SPSB081_DEV1, SPSB081_OUT4_ON);
osalThreadDelayMilliseconds(500);
AEK_POW_SPSB081_OUT4_DrvConfiguration(SPSB081_DEV1, SPSB081_OUT4_OFF);
osalThreadDelayMilliseconds(500);
}
}
Note:
UM3269 - Rev 2
This application configures the AEK-POW-SPSB081 by enabling CAN, swiching on the V2 as an LDO
and enabling WU1 wakeup source.
In this example, every high-side output is configured in four different working modes.
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UM3269
AutoDevKit ecosystem
Step 10. Generate and compile your application.
Figure 23. Code generation and compilation
Step 11. Open “UDE Starterkit” and import the “.wsx” file from the workspace to flash your application.
Figure 24. Importing debug.wsx file
Step 12. Switch on your AEK-MCU-C1MLIT1 and run your AEK-POW-SPSB081 application.
UM3269 - Rev 2
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UM3269
Available demos for AEK-POW-SPSB081
5
Available demos for AEK-POW-SPSB081
In the Autodevkit release 2.2.0 (or higher), the following demos are available for the AEK-POW-SPSB081:
•
SPC582B - SPSB081 test application for discovery, which is a demo application for the AEK-MCUC1MLIT1 to configure an AEK-POW-SPSB081 in order to supply the AEK-MCU-C1MLIT1 and drive the
four high-side outputs exploiting four different working modes;
•
SPC584B - SPSB081 test application for discovery, which is a demo application for the SPC584B-DIS to
configure an AEK-POW-SPSB081 in order to supply the MCU board and drive the four high-side outputs
exploiting four different working modes;
SPC58EC - SPSB081 test application for discovery, which is a demo application for the AEK-MCUC4MLIT1 in order to supply the AEK-MCU-C4MLIT1 and drive the four high-side outputs exploiting four
different working modes.
•
UM3269 - Rev 2
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UM3269
Available APIs
6
Available APIs
The APIs listed in the following tables are declared in the “AEK_POW_SPSB081_lld.h” file.
Table 7. APIs for the AEK-POW-SPSB081
API name
UM3269 - Rev 2
Description
AEK_POW_SPSB081_init(void)
Initialization function for all devices
allocated. Initializes PIT for
watchdog and the ADC used in the
current monitoring
AEK_POW_SPSB081_Deinit(void)
Deinitialization function for all
devices
AEK_POW_SPSB081_fsm(SPSB081_dev_t dev)
FSM function evaluator. Evaluates
the FSM of the device, depending
on the global status byte (GSB)
AEK_POW_SPSB081_write_reg(SPSB081_dev_t dev, uint8_t reg_addr, uint32_t data)
Low-level SPI write register
AEK_POW_SPSB081_readReg(SPSB081_dev_t dev, uint8_t reg_addr)
Low-level SPI read register
AEK_POW_SPSB081_readClearReg(SPSB081_dev_t dev, uint8_t reg_addr, uint32_t
data)
Low-level SPI read and clear
register
AEK_POW_SPSB081_readInfo(SPSB081_dev_t dev, uint8_t reg_addr)
Low-level SPI read info register
AEK_POW_SPSB081_setPIN(SPSB081_dev_t dev, uint8_t pin, uint8_t val)
Sets the logic state of the GPIO pin
specified by the argument
AEK_POW_SPSB081_readPIN(SPSB081_dev_t dev, uint8_t pin)
Gets the logic state of the GPIO pin
specified by the argument
AEK_POW_SPSB081_CR_dump(SPSB081_dev_t dev)
Control Register Dumping.
Populates the register map related
to CR registers
AEK_POW_SPSB081_SR_dump(SPSB081_dev_t dev, SPSB081_op_code_t op_code)
Status Register Dumping.
Populates the register map related
to SR registers.
AEK_POW_SPSB081_get_dev_sts(SPSB081_dev_t dev)
Gets SPSB0815 FSM status
AEK_POW_SPSB081_V2_Regulator_Config(SPSB081_dev_t dev, uint8_t opt)
V2 Voltage Regulator Configuration
AEK_POW_SPSB081_V2_Voltage_Config(SPSB081_dev_t dev, uint8_t opt)
V2 Voltage Configuration
AEK_POW_SPSB081_V2_Tracker_Config(SPSB081_dev_t dev, uint8_t opt)
V2 Voltage Tracker Configuration
AEK_POW_SPSB081_WDT_Time_Config(SPSB081_dev_t dev, uint8_t opt)
Watchdog Time Configuration
AEK_POW_SPSB081_V1_Reset_Config(SPSB081_dev_t dev, uint8_t opt)
V1 Reset Threshold Configuration
AEK_POW_SPSB081_Timer1_On_Time_Config(SPSB081_dev_t dev, uint8_t opt)
Timer1 TH Configuration
AEK_POW_SPSB081_Timer1_Period_Config(SPSB081_dev_t dev, uint8_t opt)
Timer1 Period Configuration
AEK_POW_SPSB081_Timer2_On_Time_Config(SPSB081_dev_t dev, uint8_t opt)
Timer2 TH Configuration
AEK_POW_SPSB081_Timer2_Period_Config(SPSB081_dev_t dev, uint8_t opt)
Timer2 Period Configuration
AEK_POW_SPSB081_WU1_Input_Config(SPSB081_dev_t dev, uint8_t opt)
Wakeup1 PullDown-Up
Configuration
AEK_POW_SPSB081_WU2_Input_Config(SPSB081_dev_t dev, uint8_t opt)
Wakeup2 PullDown-Up
Configuration
AEK_POW_SPSB081_WU1_Input_Filter_Config(SPSB081_dev_t dev, uint8_t opt)
Wakeup1 Input Filter Configuration
AEK_POW_SPSB081_WU2_Input_Filter_Config(SPSB081_dev_t dev, uint8_t opt)
Wakeup2 Input Filter Configuration
AEK_POW_SPSB081_Enable_Wakeup_WU1(SPSB081_dev_t dev)
Enables Wakeup1 input
functionality
page 26/48
UM3269
Available APIs
API name
UM3269 - Rev 2
Description
AEK_POW_SPSB081_Disable_Wakeup_WU1(SPSB081_dev_t dev)
Enables Wakeup2 input
functionality
AEK_POW_SPSB081_Enable_Wakeup_WU2(SPSB081_dev_t dev)
Disables Wakeup1 input
functionality
AEK_POW_SPSB081_Disable_Wakeup_WU2(SPSB081_dev_t dev)
Disables Wakeup2 input
functionality
AEK_POW_SPSB081_Enable_Wakeup_LIN(SPSB081_dev_t dev)
Enables Wakeup LIN input
functionality
AEK_POW_SPSB081_Disable_Wakeup_LIN(SPSB081_dev_t dev)
Disables Wakeup LIN input
functionality
AEK_POW_SPSB081_Enable_Wakeup_CAN(SPSB081_dev_t dev)
Enables Wakeup CAN input
functionality
AEK_POW_SPSB081_Disable_Wakeup_CAN(SPSB081_dev_t dev)
Disables Wakeup CAN input
functionality
AEK_POW_SPSB081_Enable_Wakeup_Timer2(SPSB081_dev_t dev)
Enables Wakeup Timer2
AEK_POW_SPSB081_Disable_Wakeup_Timer2(SPSB081_dev_t dev)
Disables Wakeup Timer2
AEK_POW_SPSB081_Enable_Wakeup_Timer1(SPSB081_dev_t dev)
Enables Wakeup Timer1
AEK_POW_SPSB081_Disable_Wakeup_Timer1(SPSB081_dev_t dev)
Disables Wakeup Timer1
AEK_POW_SPSB081_Force_V1_StandBy(SPSB081_dev_t dev)
Forces V1 Standby FSM transition
AEK_POW_SPSB081_Force_VBAT_StandBy(SPSB081_dev_t dev)
Forces VBAT Standby FSM
transition
AEK_POW_SPSB081_Force_Awake(SPSB081_dev_t dev)
Forces device Awake via SPI
AEK_POW_SPSB081_OUT1_DrvConfiguration(SPSB081_dev_t dev, uint8_t opt)
OUT1 Driver configuration
AEK_POW_SPSB081_OUT2_DrvConfiguration(SPSB081_dev_t dev, uint8_t opt)
OUT2 Driver configuration
AEK_POW_SPSB081_OUT3_DrvConfiguration(SPSB081_dev_t dev, uint8_t opt)
OUT3 Driver configuration
AEK_POW_SPSB081_OUT4_DrvConfiguration(SPSB081_dev_t dev, uint8_t opt)
OUT4 Driver configuration
AEK_POW_SPSB081_Enable_CCM_OUT1(SPSB081_dev_t dev)
Enables Constant Current
Monitoring OUT1
AEK_POW_SPSB081_Enable_CCM_OUT2(SPSB081_dev_t dev)
Enables Constant Current
Monitoring OUT2
AEK_POW_SPSB081_Enable_CCM_OUT3(SPSB081_dev_t dev)
Enables Constant Current
Monitoring OUT3
AEK_POW_SPSB081_Enable_CCM_OUT4(SPSB081_dev_t dev)
Enables Constant Current
Monitoring OUT4
AEK_POW_SPSB081_Disable_CCM_OUT1(SPSB081_dev_t dev)
Disables Constant Current
Monitoring OUT1
AEK_POW_SPSB081_Disable_CCM_OUT2(SPSB081_dev_t dev)
Disables Constant Current
Monitoring OUT2
AEK_POW_SPSB081_Disable_CCM_OUT3(SPSB081_dev_t dev)
Disables Constant Current
Monitoring OUT3
AEK_POW_SPSB081_Disable_CCM_OUT4(SPSB081_dev_t dev)
Disables Constant Current
Monitoring OUT4
AEK_POW_SPSB081_PWM1_Freq_Conf(SPSB081_dev_t dev, uint8_t opt)
PWM Frequency configuration for
OUT 1
AEK_POW_SPSB081_PWM2_Freq_Conf(SPSB081_dev_t dev, uint8_t opt)
PWM Frequency configuration for
OUT 2
AEK_POW_SPSB081_PWM3_Freq_Conf(SPSB081_dev_t dev, uint8_t opt)
PWM Frequency configuration for
OUT 3
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UM3269
Available APIs
API name
UM3269 - Rev 2
Description
AEK_POW_SPSB081_PWM4_Freq_Conf(SPSB081_dev_t dev, uint8_t opt)
PWM Frequency configuration for
OUT 4
AEK_POW_SPSB081_PWM1_duty_Conf(SPSB081_dev_t dev, float duty)
PWM duty cycle configuration for
OUT 1
AEK_POW_SPSB081_PWM2_duty_Conf(SPSB081_dev_t dev, float duty)
PWM duty cycle configuration for
OUT 2
AEK_POW_SPSB081_PWM3_duty_Conf(SPSB081_dev_t dev, float duty)
PWM duty cycle configuration for
OUT 3
AEK_POW_SPSB081_PWM4_duty_Conf(SPSB081_dev_t dev, float duty)
PWM duty cycle configuration for
OUT 4
AEK_POW_SPSB081_DIR_Conf(SPSB081_dev_t dev, uint8_t opt)
DIR functionality configuration
AEK_POW_SPSB081_Enable_CM(SPSB081_dev_t dev)
Enables Current Monitoring
AEK_POW_SPSB081_Disable_CM(SPSB081_dev_t dev)
Disables Current Monitoring
AEK_POW_SPSB081_CM_Conf(SPSB081_dev_t dev, uint8_t opt)
Current Monitoring configuration.
Defines which is the OUT to be
monitored
AEK_POW_SPSB081_Enable_VS_Lock(SPSB081_dev_t dev)
Enables VS Lock
AEK_POW_SPSB081_Disable_VS_Lock(SPSB081_dev_t dev)
Disables VS Lock
AEK_POW_SPSB081_Enable_VS_OV_SD(SPSB081_dev_t dev)
Enables Vs Over Voltage
Shutdown
AEK_POW_SPSB081_Disable_VS_OV_SD(SPSB081_dev_t dev)
Disables Vs Over Voltage
Shutdown
AEK_POW_SPSB081_Enable_VS_UV_SD(SPSB081_dev_t dev)
Enables Vs Under Voltage
Shutdown
AEK_POW_SPSB081_Disable_VS_UV_SD(SPSB081_dev_t dev)
Disables Vs Under Voltage
Shutdown
AEK_POW_SPSB081_Enable_VSREG_Lock(SPSB081_dev_t dev)
Enables VSREG Lock
AEK_POW_SPSB081_Disable_VSREG_Lock(SPSB081_dev_t dev)
Disables VSREG Lock
AEK_POW_SPSB081_Enable_V1_OV_Prot(SPSB081_dev_t dev)
Enables V1 OverVoltage Protection
AEK_POW_SPSB081_Disable_V1_OV_Prot(SPSB081_dev_t dev)
Disables V1 OverVoltage
Protection
AEK_POW_SPSB081_Enable_ICMP_th(SPSB081_dev_t dev)
Enables ICMP Threshold
AEK_POW_SPSB081_Disable_ICMP_th(SPSB081_dev_t dev)
Disables ICMP Threshold
AEK_POW_SPSB081_Enable_V1_ICMP(SPSB081_dev_t dev)
Enables V1_ICMP
AEK_POW_SPSB081_Disable_V1_ICMP(SPSB081_dev_t dev)
Disables V1_ICMP
AEK_POW_SPSB081_Enable_IWK(SPSB081_dev_t dev)
Enables IWK generates an
interrupt when waking-up from
CAN or going-out from standby
mode
AEK_POW_SPSB081_Disable_IWK(SPSB081_dev_t dev)
Disables IWK
AEK_POW_SPSB081_Enable_Cluster_TSD_mode(SPSB081_dev_t dev)
Enables Cluster Thermal Shutdown
mode
AEK_POW_SPSB081_Disable_Cluster_TSD_mode(SPSB081_dev_t dev)
Disables Cluster Thermal
Shutdown mode
AEK_POW_SPSB081_Enable_Diag_Ext(SPSB081_dev_t dev)
Enables Cluster Thermal Shutdown
mode
AEK_POW_SPSB081_Disable_Diag_Ext(SPSB081_dev_t dev)
Disables Cluster Thermal
Shutdown mode
AEK_POW_SPSB081_Enable_CAN_RX_only_mode(SPSB081_dev_t dev)
Enables CAN RX only mode
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UM3269
Available APIs
API name
UM3269 - Rev 2
Description
AEK_POW_SPSB081_Disable_CAN_RX_only_mode(SPSB081_dev_t dev)
Disables CAN RX only mode
AEK_POW_SPSB081_Enable_CAN_Active_mode(SPSB081_dev_t dev)
Enables CAN Active mode
AEK_POW_SPSB081_Disable_CAN_Active_mode(SPSB081_dev_t dev)
Disables CAN Active mode
AEK_POW_SPSB081_Enable_CAN_AutoBias(SPSB081_dev_t dev)
Enables CAN Autobias
AEK_POW_SPSB081_Disable_CAN_AutoBias(SPSB081_dev_t dev)
Disables CAN Autobias
AEK_POW_SPSB081_Enable_Standard_LIN_Wakeup(SPSB081_dev_t dev)
Enables Standard LIN wakeup
AEK_POW_SPSB081_Enable_Not_Standard_LIN_Wakeup(SPSB081_dev_t dev)
Enables Not Standard LIN wakeup
AEK_POW_SPSB081_get_VS_OV(SPSB081_dev_t dev)
Gets Vs OverVoltage warning
AEK_POW_SPSB081_get_VS_UV(SPSB081_dev_t dev)
Gets Vs UnderVoltage warning
AEK_POW_SPSB081_get_VSreg_OV(SPSB081_dev_t dev)
Gets VSREG OverVoltage warning
AEK_POW_SPSB081_get_VSreg_UV(SPSB081_dev_t dev)
Gets VSREG UnderVoltage
warning
AEK_POW_SPSB081_get_V1_OV(SPSB081_dev_t dev)
Gets V1 OverVoltage warning
AEK_POW_SPSB081_get_V1_UV(SPSB081_dev_t dev)
Gets V1 UnderVoltage warning
AEK_POW_SPSB081_get_V1_Fail(SPSB081_dev_t dev)
Gets V1 Fail
AEK_POW_SPSB081_get_V2_Fail(SPSB081_dev_t dev)
Gets V2 Fail
AEK_POW_SPSB081_get_V2_SC(SPSB081_dev_t dev)
Gets V2 Short Circuit
AEK_POW_SPSB081_get_TW(SPSB081_dev_t dev)
Gets Thermal Warning
AEK_POW_SPSB081_get_TSHDN1(SPSB081_dev_t dev)
Gets Thermal Shutdown1
AEK_POW_SPSB081_get_TSHDN2(SPSB081_dev_t dev)
Gets Thermal Shutdown2
AEK_POW_SPSB081_get_LIN_TXD_Dom(SPSB081_dev_t dev)
Gets LIN TXD Dominant
AEK_POW_SPSB081_get_LIN_PERM_Dom(SPSB081_dev_t dev)
Gets LIN PERM Dominant
AEK_POW_SPSB081_get_LIN_PERM_Rec(SPSB081_dev_t dev)
Gets LIN PERM Recessive
AEK_POW_SPSB081_get_CAN_TXD_Dom(SPSB081_dev_t dev)
Gets CAN TXD Dominant
AEK_POW_SPSB081_get_CAN_RXD_Rec(SPSB081_dev_t dev)
Gets CAN TXD Recessive
AEK_POW_SPSB081_get_CAN_PERM_Dom(SPSB081_dev_t dev)
Gets CAN PERM Dominant
AEK_POW_SPSB081_get_CAN_PERM_Rec(SPSB081_dev_t dev)
Gets CAN PERM Recessive
AEK_POW_SPSB081_get_CAN_TO(SPSB081_dev_t dev)
Gets CAN Timeout
AEK_POW_SPSB081_get_SPI_INV_Cmd(SPSB081_dev_t dev)
Gets SPI Invalid Command
AEK_POW_SPSB081_get_SPI_CLK_Count(SPSB081_dev_t dev)
Gets SPI Clock Count
AEK_POW_SPSB081_get_WD_Fail(SPSB081_dev_t dev)
Gets Watchdog Failure
AEK_POW_SPSB081_get_Forced_Sleep_TSD2(SPSB081_dev_t dev)
Gets Forced Sleep Thermal
Shutdown2
AEK_POW_SPSB081_get_Forced_Sleep_V1OV(SPSB081_dev_t dev)
Gets Forced Sleep V1 OverVoltage
AEK_POW_SPSB081_get_Forced_Sleep_WD(SPSB081_dev_t dev)
Gets Forced Sleep Watchdog
AEK_POW_SPSB081_get_POR(SPSB081_dev_t dev)
Gets Power On Reset
AEK_POW_SPSB081_get_WD_Fail_Cnt(SPSB081_dev_t dev)
Gets Watchdog failure count
AEK_POW_SPSB081_get_V1_Restart_Cnt(SPSB081_dev_t dev)
Gets V1 Restart Count
AEK_POW_SPSB081_get_CAN_SUP_Low(SPSB081_dev_t dev)
Gets CAN Supply Low
AEK_POW_SPSB081_get_IP_SUP_Low(SPSB081_dev_t dev)
Gets IP Supply Low
AEK_POW_SPSB081_get_SGNDLOSS(SPSB081_dev_t dev)
Gets SGND Loss
AEK_POW_SPSB081_get_OUT1_OC(SPSB081_dev_t dev)
Gets OUT1 Over Current
page 29/48
UM3269
Available APIs
API name
UM3269 - Rev 2
Description
AEK_POW_SPSB081_get_OUT2_OC(SPSB081_dev_t dev)
Gets OUT2 Over Current
AEK_POW_SPSB081_get_OUT3_OC(SPSB081_dev_t dev)
Gets OUT3 Over Current
AEK_POW_SPSB081_get_OUT4_OC(SPSB081_dev_t dev)
Gets OUT4 Over Current
AEK_POW_SPSB081_get_OUT1_OL(SPSB081_dev_t dev)
Gets OUT1 Open Load
AEK_POW_SPSB081_get_OUT2_OL(SPSB081_dev_t dev)
Gets OUT2 Open Load
AEK_POW_SPSB081_get_OUT3_OL(SPSB081_dev_t dev)
Gets OUT3 Open Load
AEK_POW_SPSB081_get_OUT4_OL(SPSB081_dev_t dev)
Gets OUT4 Open Load
AEK_POW_SPSB081_get_TW1(SPSB081_dev_t dev)
Gets Thermal Warning1
AEK_POW_SPSB081_get_TW2(SPSB081_dev_t dev)
Gets Thermal Warning2
AEK_POW_SPSB081_get_TW3(SPSB081_dev_t dev)
Gets Thermal Warning3
AEK_POW_SPSB081_get_TW4(SPSB081_dev_t dev)
Gets Thermal Warning4
AEK_POW_SPSB081_get_TSD1(SPSB081_dev_t dev)
Gets Thermal Shutdown1
AEK_POW_SPSB081_get_TSD2(SPSB081_dev_t dev)
Gets Thermal Shutdown2
AEK_POW_SPSB081_get_TSD3(SPSB081_dev_t dev)
Gets Thermal Shutdown3
AEK_POW_SPSB081_get_TSD4(SPSB081_dev_t dev)
Gets Thermal Shutdown4.
AEK_POW_SPSB081_get_NINT(SPSB081_dev_t dev)
Gets NINT Pin level
AEK_POW_SPSB081_get_DIAG(SPSB081_dev_t dev)
Gets DIAG Pin level
AEK_POW_SPSB081_get_NRST(SPSB081_dev_t dev)
Gets NRST Pin level
AEK_POW_SPSB081_get_DIR(SPSB081_dev_t dev)
Gets DIR Pin level
AEK_POW_SPSB081_get_WU1(SPSB081_dev_t dev)
Gets WU1 Pin level
AEK_POW_SPSB081_get_CM(SPSB081_dev_t dev)
Gets Current Monitoring Level
AEK_POW_SPSB081_CR_setting(SPSB081_dev_t dev)
Gets OUT1 Open Load
page 30/48
UM3269
Waveforms
7
Waveforms
7.1
Current monitoring use-case
In this test, the SPSB081 has been configured in order to monitor the current absorbed by OUT1.
Figure 25. Current monitoring use-case
Load
To the micro
It has been performed a series of IOUT, VCM measurements. By varying the resistance of the LOAD from 80 to
200 Ω, the Current Monitoring feature has been validated.
Figure 26. Current monitoring test results
UM3269 - Rev 2
page 31/48
UM3269
Waveforms
As shown by the VCM values, by connecting an active load to OUT1, when the resistor used as load increases,
the current measured by the current monitor pin decreases according to the above formula:
VCM=(Iout1/990)*Rsense
Considering that for the AEK-POW-SPSB081:
•
•
•
7.2
Rsense = 27 KΩ
VCM max = 4 V
Ioutx max =140 mA
HS output use-case example
To test the high-side outputs, we used the following code:
//setting duty conf out
AEK_POW_SPSB081_PWM2_duty_Conf(SPSB081_DEV1, 2); AEK_POW_SPSB081_PWM2_Freq_Conf(SPSB081_DEV1
, SPSB081_PWM2_250HZ);
//setting timers
AEK_POW_SPSB081_Timer1_Period_Config(SPSB081_DEV1, SPSB081_T1_PER_100_MS);
AEK_POW_SPSB081_Timer2_Period_Config(SPSB081_DEV1, SPSB081_T2_PER_2000_MS);
AEK_POW_SPSB081_Timer1_On_Time_Config(SPSB081_DEV1, SPSB081_T1_ON_TIME_10_MS);
AEK_POW_SPSB081_Timer2_On_Time_Config(SPSB081_DEV1, SPSB081_T2_ON_TIME_20_MS);
//setting modes for every out
AEK_POW_SPSB081_OUT1_DrvConfiguration(SPSB081_DEV1, SPSB081_OUT1_ON);
AEK_POW_SPSB081_OUT2_DrvConfiguration(SPSB081_DEV1, SPSB081_OUT2_PWM2);
AEK_POW_SPSB081_OUT3_DrvConfiguration(SPSB081_DEV1, SPSB081_OUT3_TIMER1);
AEK_POW_SPSB081_OUT4_DrvConfiguration(SPSB081_DEV1, SPSB081_OUT4_TIMER2);
//out1 on/off in loop every 200ms
for ( ; ; ) {
AEK_POW_SPSB081_OUT1_DrvConfiguration(SPSB081_DEV1, SPSB081_OUT1_ON);
osalThreadDelayMilliseconds(200);
AEK_POW_SPSB081_OUT1_DrvConfiguration(SPSB081_DEV1, SPSB081_OUT1_OFF);
osalThreadDelayMilliseconds(200);
}
Here the 4 outputs are configured using AutoDevKit driver APIs in 4 different modes:
OUT1 is switched on and off manually, every 0.2 seconds
OUT2 is configured to supply a 250 hz PWM, with a 2% duty cycle
OUT3 is configured in Timed mode, using Timer 1 settings (period 100 ms, on-time 10 ms)
OUT4 is configured in Timed mode, using Timer 2 settings (period 2000 ms, on-time 20 ms)
UM3269 - Rev 2
page 32/48
UM3269
Waveforms
Figure 27. High-side outputs - no load
Figure 28. High-side outputs - no load (zoom)
UM3269 - Rev 2
page 33/48
UM3269
Waveforms
7.3
V1/V2 test
V1 regulator supplies 5 V, whereas V2 regulator can be configured as tracker of V1 or as an LDO, supplying 3.3 V
or 5 V.
To test the voltage regulators, we used the following code:
AEK_POW_SPSB081_V2_Tracker_Config(SPSB081_DEV1,SPSB081_V2_LINEAR_INDIP_LDO);
AEK_POW_SPSB081_V2_Regulator_Config(SPSB081_DEV1, SPSB081_V2_ON_IN_ACTIVE_MODE);
AEK_POW_SPSB081_V2_Voltage_Config(SPSB081_DEV1, SPSB081_V2_5_V); osalThreadDelayMillisecond
s(500);
AEK_POW_SPSB081_V2_Voltage_Config(SPSB081_DEV1, SPSB081_V2_3_3_V); osalThreadDelayMillisecon
ds(500);
AEK_POW_SPSB081_V2_Regulator_Config(SPSB081_DEV1, SPSB081_V2_OFF);
osalThreadDelayMilliseconds(250);
AEK_POW_SPSB081_V2_Tracker_Config( SPSB081_DEV1,SPSB081_V2_TKR_V1_REG);
AEK_POW_SPSB081_V2_Regulator_Config(SPSB081_DEV1, SPSB081_V2_ON_IN_ACTIVE_MODE);
osalThreadDelayMilliseconds(400);
AEK_POW_SPSB081_Force_VBAT_StandBy(SPSB081_DEV1);
Here the V2 regulator is configured as follows:
A: V2 ON_during_Active_mode, 5 V LDO
B: V2 3.3 V LDO
C: V2 switched OFF
D: V2 ON_during_Active_mode, Voltage Tracker of V1
E: VBAT standby → V1 and V2 switched OFF
Figure 29. V1 and V2 regulators test waveforms
7.4
CAN test
This test has been performed in active mode, using the following code string:
AEK_POW_SPSB081_Enable_CAN_Active_mode(SPSB081_DEV1);
By configuring the CAN2 line of the microntroller board, and by setting the CAN_TX pin as very strong drive, we
periodically transmitted a CAN frame (0xDDEEFFAAUL) to the AEK-POW-SPSB081 CAN_TX pin.
Figure 30. CAN test waveforms
UM3269 - Rev 2
page 34/48
UM3269
Waveforms
Monitoring the output signal between CAN-H/CAN-L, we notice that the message is correctly transmitted through
the AEK-POW-SPSB081.
7.5
CAN wake-up test
By launching this API function:
AEK_POW_SPSB081_Enable_Wakeup_CAN(SPSB081_DEV1);
the wake-up via CAN will be enabled. In this way, the board will wake up as soon as it receives a CAN message.
7.6
LIN test
By configuring a LIN line of the microcontroller and setting the LIN_TX pin as very strong drive, we transmitted a
LIN frame (0xDDEEFFAAUL) to the AEK-POW-SPSB081 LIN_TX pin.
Figure 31. LIN test waveform
The above waveform shows that the LIN pin mirrors the message received from the LIN_Tx pin.
7.7
LIN wake-up test
Enable wake-up through the following API call:
AEK_POW_SPSB081_Enable_Wakeup_LIN(SPSB081_DEV1);
Defining also the LIN message behavior, we want to define as a wake-up event one of the following functions:
AEK_POW_SPSB081_Enable_Not_Standard_LIN_Wakeup(SPSB081_DEV1);
or
AEK_POW_SPSB081_Enable_Standard_LIN_Wakeup(SPSB081_DEV1);
And, by sending a LIN message along the LIN line, the AEK-POW-SPSB081 wakes up.
UM3269 - Rev 2
page 35/48
UM3269
Thermal behavior
8
Thermal behavior
The AEK-POW-SPSB081 has four layers. Its dimensions are 60x33 mm with a thickness of 1.6 mm.
Through a thermal camera, we analyzed the SPSB081 heating under some standard board operating conditions.
The device heats, but its temperature never goes over the device thermal limits.
Figure 32. Thermal behavior
The case studied was the “Example Application n2” (see section 3.1), in which the AEK-POW-SPSB081 supplies
a 5 V microcontroller and a 5 V sensor.
Scenario 0: (V1 ON, V2 OFF). V1 absorbing 150mA. V2 absorbing 0mA, -&gt; Temperature=76&deg;
Scenario 1: (V1 ON, V2 ON). V1 absorbing 150mA, V2 absorbing 50mA, -&gt; Temperature=89&deg;.
Scenario 2: (V1 ON, V2 ON). V1 absorbing 150mA, V2 absorbing 100mA, -&gt; Temperature=101&deg;
Scenario 3: (V1 ON, V2 ON). V1 absorbing 150mA, V2 absorbing 150mA, -&gt; Temperature=111&deg;
Figure 33. Scenario 0 on the left, Scenario 1 on the right
Figure 34. Scenario 2 on the left, Scenario 3 on the right
UM3269 - Rev 2
page 36/48
UM3269 - Rev 2
9
Schematic diagrams
Figure 35. AEK-POW-SPSB081 circuit schematic
C1
4.7nF
VS
STTH102AY
TP4
VSREG
D2
1nF
R33
27K
CM_OUT
220
5
OUT2
6
OUT1
7
D6
C15
1uF
D7
D8
3.2V
Green
3.2V
Green
3.2V
Green
3.2V
Green
R12
2.7k
R13
2.7k
R14
2.7k
R15
2.7k
GND
VBAT
VBAT
R22
2.7k
R23
2.7k
Q2
BSS138Q
R30
10K
WU1_IN
DIAGN
Q3
BSS138Q
R31
10K
Q4
BSS138Q
GND
2V
Amber
Q1
BSS138Q
R29
10K
D13
R32
10K
GND
26
25
28
NC
29
CAN_L
VCANSUP
27
30
NC
31
CAN_H
VSREG
32
PGND
VS
RxD_C
S1
430152043826
C8
TP8
2.2uF
TP10
22
NRESET
R5
100
R6
MISO
TP12
100
R7
MOSI
100
R8
CLK
21
20
TP13
19
GND
CS
TP11
4
3
2
1
4
3
2
1
CN4
100
18 LIN_RX
17 CAN_RX
LIN_TX
LIN_RX
CAN_TX
CAN_RX
U1
SPSB0815-TR
R10
1K
R16
62
4
R11 3
1K 2
R17 1
62
4
3
2
1
CN5
DBG
TP15 TP16
WU1_IN
DIR
NRESET
DIAGN
CM_OUT
NINT
C16
100nF
GND
GND
100
1K
100
100
100
100
R18
R19
R20
R26
R27
R28
7
6
5
4
3
2
1
7
6
5
4
3
2
1
CN6
GND
M1
M2
M3
M4
M3
M3
M3
M3
GND
GND
GND
RxD_L
2
GND
V1
NINT
V2
D12
2V
Red
OUT1
DIAGN
D11
3.2V
Blue
CLK
N.M.
WU1
D10
3.2V
Blue
OUT2
CM
R24
2K
DO
LIN_TX
R25
10K
DI
OUT3
CAN_TX
VBAT
VBAT
OUT4
1JP1
VS
VBAT
R21
2.7k
8
D9
2
1
D4
ESDLIN1524BJ
ESDLIN1524BJ
23
CSN
NINT
R9
CM
GND
4
OUT3
V2
16
GND
TP14
OUT4
2
1
GND
24
V1
DIAGN
C13
2.2uF
SZMM3Z4V7T1G
3
2
1
GND
NRESET
CM
TP9
V2
2
1
LIN
GND
TP6
DIR/WU2
15
D5
WU1
TxD_L
47nF
GND
V1
33
2
C3
47pF
220nF
LIN
TP7
TxD_C
47nF
DIR
Debug
47nF
C12
10
47nF
GND
C11
1
NC
C10
TP5
9
C9
P2
WU1
GND
CN2
C7
TAB
GND
62
VSREG
CAN_L
GND
OUT4
OUT3
OUT2
OUT1
CAN_H
LIN
GND
CN3
1
2
3
4
5
C2
47pF
R4
N.M.
0
14
C6
10uF
13
C5
10uF
R3
0
R2
62
CN1
C4
GND
1
2
3
STTH102AY
D3
SMAJ40CA-TR
1 V1
2 GND
3 V2
R1
TP3
V1 V2
12
P1
TP2
SGND
2
1
TP1
D1
11
VBAT
TP17
GND
TP18
GND
GND
UM3269
Schematic diagrams
page 37/48
UM3269
Bill of materials
10
Bill of materials
Table 8. AEK-POW-SPSB081 bill of materials
Item
UM3269 - Rev 2
Q.ty
Ref.
Part/value
Description
Manufacturer
Order code
1
1
C1
4.7nF 0603C
50V &plusmn;10%
0603 - 50V X7R Class II
WE
885012206087
2
2
C2, C3
47pF 0603C
50V &plusmn;5%
0603 - 50V NP0 Class I
WE
885012006055
3
1
C4
1nF 0603C 50V
&plusmn;10%
0603 - 50V X7R Class II
WE
885012206083
4
2
C5, C6
10uF 1210C
50V &plusmn;10%
1210 - 50V X7R Class II
WE
885012209073
5
1
C7
220nF 0603C
50V &plusmn;5%
0603 - 50V X7R Class II
WE
885012206125
6
2
C8, C13
2.2uF 0805C
25V &plusmn;10%
0805 - 25V X7R Class II
WE
885012207079
7
4
C9, C10, C11,
C12
47nF 0603C
50V &plusmn;10%
0603 - 50V X7R Class II
WE
885012206093
8
1
C15
1uF 0805C 50V
&plusmn;10%
0805 - 50V X7R Class II
WE
885012207103
9
1
C16
100nF 0805C
100V &plusmn;10%
0805 - 100V X7R Class II
WE
885012207128
10
2
CN1, CN2
KK254_2p
250VAC 3A
2.54mm - 1 row
- KK254 - Male
WE
61900211121
11
1
CN3
KK254_3p
250VAC 3A
2.54mm - 1 row
- KK254 - Male
WE
61900311121
12
2
CN4, CN5
KK254_4p
250VAC 3A
2.54mm - 1 row
- KK254 - Male
WE
61900411121
13
1
CN6
KK254_7P
250VAC 3A
2.54mm - 1 row
- KK254 - Male
WE
61900711121
14
2
D1, D2
STTH102AY
SMA 200V 1A
Automotive high
efficiency
ST
ultrafast diode.
STTH102AY
15
1
D3
Automotive 600
SMAJ40CA-TR
W, 30.8 V TVS
SMA 40V 400W
in SMB
ST
SMAJ40CA-TR
ST
ESDLIN1524BJ
16
1
D4
ESDLIN1524BJ
SOD-323
Automotive
Transil™,
transient
voltage
suppressor
(TVS) for LIN
bus
17
1
D5
SZMM3Z4V7T1
G SOD-323
4.7V 300mW
4.7V Zener
Voltage
Regulators,
300mW
Onsemi
SZMM3Z4V7T1G
18
4
D6, D7, D8, D9
Green
LED_0805 3.2V
0805 - Led
Green - 3.2V
WE
150080GS75000
19
2
D10, D11
Blue LED_0805
3.2V
0805 - Led Blue
- 3.2V
WE
150080BS75000
20
1
D12
Red LED_0805
2V
0805 - Led Red
- 2V
WE
150080RS75000
page 38/48
UM3269
Bill of materials
Item
Ref.
Part/value
Description
Manufacturer
Order code
21
1
D13
Amber
LED_0805 2V
0805 - Led
Amber - 2V
WE
150080AS75000
22
1
JP1
SIL_2x1
250VAC 3A
2.54mm - 1 row
WE
61300211121
P1
Con_2P_2.54
150V (AC); 450
V (AC) 6A
2.54mm - WRTBL Series
WE
2109 Horizontal Entry
Modular
691210910002
2.54mm - WRTBL Series
WE
2109 Horizontal Entry
Modular
691210910005
23
1
24
1
P2
Con_5P_2.54
150V (AC); 450
V (AC) 6A
25
4
Q1, Q2, Q3, Q4
BSS138Q
N-Channel
SOT-23 50 0.2A Enhancement
0.3W
Mosfet
NEXPERIA
BSS138Q-7-F
26
4
R1, R2, R16,
R17
62 0603R 0.1W
&plusmn;0.1%
0603 - &plusmn;0.1% 0.1W
Panasonic
ERA3AEB620V
27
1
R3
0 0603R 0.1W
&plusmn;1%
0603 - &plusmn;1% 0.1W
Panasonic
ERJ3GEY0R00V
28
1
R4
N.M. 0603R
0603
N.A.
N.A.
29
9
R5, R6, R7, R8,
R18, R20, R26,
R27, R28
100 0603R
0.25W &plusmn;1%
0603 - &plusmn;1% 0.25W
Panasonic
ERJPA3F1000V
30
1
R9
220 0603R
0.25W &plusmn;1%
0603 - &plusmn;1% 0.25W
Panasonic
ERJPA3F2200V
31
3
R10, R11, R19
1K 0603R
0.25W &plusmn;1%
0603 - &plusmn;1% 0.25W
Panasonic
ERJPA3F1001V
32
7
R12, R13, R14,
R15, R21, R22,
R23
2.7k 0603R
0.125W &plusmn;1%
0603 - &plusmn;1% 0.125W
Vishay
MCT06030C2701FP500
33
1
R24
2K 0603R 0.2W
&plusmn;1%
0603 - &plusmn;1% 0.2W
Panasonic
ERJP03F2001V
34
5
R25, R29, R30,
R31, R32
10K 0603R
0.2W &plusmn;1%
0603 - &plusmn;1% 0.2W
Panasonic
ERJP03F1002V
35
1
R33
27K 0805R
0.125W
0805 - &plusmn;1% 0.125W
Panasonic
ERJ6ENF2702V
36
1
S1
430152043826
430152043826
Switch
WE
430152043826
Automotive
Power
management IC ST
with LIN and
CAN-FD
SPSB0815-TR
37
1
U1
SPSB0815-TR
QFN32L
38
4
for blister
97790403111
Screw
WA-SCRW Pan
Head Screw w.
cross slot M3
WE
97790403111
for blister
60900213421
Jumper
WR-PHD 2.54
mm MultiJumper Jumper
with Test Point
WE
60900213421
39
UM3269 - Rev 2
Q.ty
1
page 39/48
UM3269
Bill of materials
Item
Ref.
Part/value
Description
Manufacturer
Order code
40
2
for blister
61900411621
Terminal
Housing
WR-WTB 2.54
mm Female
Terminal
Housing
WE
61900411621
41
2
for blister
61900211621
Terminal
Housing
WR-WTB 2.54
mm Female
Terminal
Housing
WE
61900211621
for blister
61900311621
Terminal
Housing
WR-WTB 2.54
mm Female
Terminal
Housing
WE
61900311621
WR-WTB 2.54
mm Female
Terminal
Housing
WE
61900711621
WE
61910113722
42
1
43
1
for blister
61900711621
Terminal
Housing
44
22
for blister
61910113722
Crimp Contact
WR-WTB 2.54
mm Female
Crimp Contact
for blister
970080365
Spacer M3x8
WA-SPAII
Plastic Spacer
WE
Stud, metric,
internal/ internal
45
UM3269 - Rev 2
Q.ty
4
970080365
page 40/48
UM3269
Board versions
11
Board versions
Table 9. AEK-POW-SPSB081 versions
PCB version
AEK$POW-SPSB081A (1)
Schematic diagrams
AEK$POW-SPSB081A schematic diagrams
Bill of materials
AEK$POW-SPSB081A bill of materials
1. This code identifies the AEK-POW-SPSB081 evaluation board first version. It is printed on the board PCB.
UM3269 - Rev 2
page 41/48
UM3269
Regulatory compliance information
12
Regulatory compliance information
Notice for US Federal Communication Commission (FCC)
For evaluation only; not FCC approved for resale
FCC NOTICE - This kit is designed to allow:
(1) Product developers to evaluate electronic components, circuitry, or software associated with the kit to
determine
whether to incorporate such items in a finished product and
(2) Software developers to write software applications for use with the end product.
This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all
required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product
not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless
the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit
must operate under the authority of an FCC license holder or must secure an experimental authorization under
part 5 of this chapter 3.1.2.
Notice for Innovation, Science and Economic Development Canada (ISED)
For evaluation purposes only. This kit generates, uses, and can radiate radio frequency energy and has not been
tested for compliance with the limits of computing devices pursuant to Industry Canada (IC) rules.
&Agrave; des fins d'&eacute;valuation uniquement. Ce kit g&eacute;n&egrave;re, utilise et peut &eacute;mettre de l'&eacute;nergie radiofr&eacute;quence et n'a pas
&eacute;t&eacute; test&eacute; pour sa conformit&eacute; aux limites des appareils informatiques conform&eacute;ment aux r&egrave;gles d'Industrie Canada
(IC).
Notice for the European Union
This device is in conformity with the essential requirements of the Directive 2014/30/EU (EMC) and of the
Directive 2015/863/EU (RoHS).
Notice for the United Kingdom
This device is in compliance with the UK Electromagnetic Compatibility Regulations 2016 (UK S.I. 2016 No. 1091)
and with the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment
Regulations 2012 (UK S.I. 2012 No. 3032).
UM3269 - Rev 2
page 42/48
UM3269
Revision history
Table 10. Document revision history
UM3269 - Rev 2
Date
Revision
Changes
22-Nov-2023
1
Initial release.
23-Apr-2024
2
Updated Section 1.1: Board main components.
page 43/48
UM3269
Contents
Contents
1
Hardware overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.1
1.2
2
2.2
2.3
4
1.1.1
SPSB081 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1.2
SPSB081 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1.3
Pin description and mapping on board connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Board operating range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
3
Board main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Voltage regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.1
Voltage regulator: V1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.2
Voltage regulator: V2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.3
Voltage regulators failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1.4
Short to ground detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Simplified state machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2.1
Active mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2.2
SW-debug mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Fail-safe mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3.1
Temporary failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3.2
Non recoverable failures - Forced in VBAT_standby mode . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.3
V1_standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3.4
VBAT_standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3.5
Wake-up from standby modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4
V1 overvoltage detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5
Power outputs (OUT1, OUT2, OUT3, OUT4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.6
Open-load detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.7
Overcurrent detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.8
Current monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.9
Constant current mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
How to use the AEK-POW-SPSB081. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2
Using the board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
AutoDevKit ecosystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4.1
aek_pow-spsb081_component_rla folder structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2
Using AEK-POW-SPSB081 in AutoDevKit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5
Available demos for AEK-POW-SPSB081 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
6
Available APIs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
UM3269 - Rev 2
page 44/48
UM3269
Contents
7
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
7.1
Current monitoring use-case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.2
HS output use-case example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.3
V1/V2 test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.4
CAN test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.5
CAN wake-up test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.6
LIN test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.7
LIN wake-up test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8
Thermal behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
9
Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
10
Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
11
Board versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
12
Regulatory compliance information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
UM3269 - Rev 2
page 45/48
UM3269
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Board pin functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Voltage regulator configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Temporary failures conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Non-recoverable failure conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Wake-up source. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
APIs for the AEK-POW-SPSB081 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
AEK-POW-SPSB081 bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
AEK-POW-SPSB081 versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
UM3269 - Rev 2
page 46/48
UM3269
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Figure 23.
Figure 24.
Figure 25.
Figure 26.
Figure 27.
Figure 28.
Figure 29.
Figure 30.
Figure 31.
Figure 32.
Figure 33.
Figure 34.
Figure 35.
UM3269 - Rev 2
AEK-POW-SPSB081 evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
AEK-POW-SPSB081 board components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SPSB081 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
State machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Use case 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Use case 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Use case 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Use case 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Use case 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
D12 LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
V1 active . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
NRST pulses indicating watchdog failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
D12 LED during Vbat_standby mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
S1 button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
AEK-POW-SPSB081 component folder structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Adding components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Adding AEK-POW-SPSB081 component RLA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Selecting AEK-POW-SPSB081 Component RLA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Adding a new element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
AEK-POW-SPSB081 configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Component allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Board view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Code generation and compilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Importing debug.wsx file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Current monitoring use-case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Current monitoring test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
High-side outputs - no load. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
High-side outputs - no load (zoom) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
V1 and V2 regulators test waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CAN test waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
LIN test waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Thermal behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Scenario 0 on the left, Scenario 1 on the right. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Scenario 2 on the left, Scenario 3 on the right. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
AEK-POW-SPSB081 circuit schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
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UM3269
IMPORTANT NOTICE – READ CAREFULLY
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&copy; 2024 STMicroelectronics – All rights reserved
UM3269 - Rev 2
page 48/48
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