STMicroelectronics STUSB4761 Datasheet
STMicroelectronics STUSB4761 is a standalone USB PD controller with integrated CC/CV for AC/DC applications. It offers Type-C and USB PD control with autorun, up to 5 PDO profiles, programmable VBUS voltage and current protections, and a 50 mA VCONN switch with OVP and OCP. The device supports E-marked cables for 100 W applications, ambient temperature adaptive power and overtemperature protection, and data role and VCONN swap answer support. It also features factory mode configuration over the CC pin and an integrated VBUS discharge control path.
விளம்பரம்
விளம்பரம்
STUSB4761
Datasheet
Standalone USB PD controller with integrated CC/CV for AC/DC applications
QFN16 (3x3 mm)
Product status link
STUSB4761
Product summary
Order code
Description
Package
Marking
STUSB4761QTR
Standalone USB
PD controller
(source, autorun)
QFN16 (3x3 mm)
4761
Features
• Type-C and USB PD controller (with autorun)
• Provider role - up to 5 PDO profiles
• Programmable VBUS voltage and current protections
• High-side current sensing
• Integrated CC/CV regulation
• 50 mA V
CONN
switch (OVP and OCP)
• E-marked cable support for 100 W applications
• Ambient temperature adaptive power and overtemperature protection
• Data role and V
CONN
swap answer support
• Factory mode configuration over CC pin
• Integrated V
BUS
discharge control path
• Integrated V
BUS
switches gate driver (PMOS)
• Short-to-V
BUS
protections
• V
DD
= [4.1 V; 22 V] - AMR = 28 V
• Temperature range: -40 °C up to 105 °C
• ESD = 1.5 kV CDM / 4 kV HBM
• Certified according to:
– USB Power Delivery specifications (rev 3.0)
– USB type-C™ (rev 1.4)
– TID: 2070
Applications
• AC adapters and power supplies for computer, consumer, portable consumer and industrial applications
• Smart plugs and wall adapters
Description
The STUSB4761 addresses USB type-C and Power Delivery provider devices.
Thanks to default parameters stored in an internal non-volatile-memory, the
STUSB4761 implements up to 5 PDOs in order to negotiate autonomously a Power
Delivery contract with a sink without any internal or external software (autorun mode).
A CC/CV regulation loop allows a fully regulated power management unit (AC/DC) to be implemented with a minimum BOM cost.
DS13141 - Rev 3 - September 2021
For further information contact your local STMicroelectronics sales office.
www.st.com
1
STUSB4761
Functional description
Functional description
The STUSB4761 is a USB type-C and Power Delivery controller IC optimized for source applications. It integrates a CC/CV regulation loop to drive a power regulation stage.
The STUSB4761 offers the benefits of a full hardware USB PD stack allowing a robust, deterministic and safe negotiation in line with USB PD standard. It is ideal for provider applications in which digital or software intelligence is limited or missing.
The STUSB4761 main functions are:
1.
Detecting the connection between two ports (attach detection)
2.
Establishing a valid source-to-sink connection
3.
Determining the attached device mode: sink or accessory
4.
Checking cable power capabilities
5.
Negotiating a USB PD contract with a PD capable device
6.
Configuring the output power path accordingly
7.
Regulating voltage and current according to PD contract
8.
Monitoring V
BUS
, managing transitions, handling protections and ensuring user and device safety
In addition, the STUSB4761 offers customizable power data objects (PDO), V
BUS
under/overvoltage (UVLO /
OVLO) protections, an integrated discharge path.
Figure 1. Block diagram
VCONN_VSYS
VDD
OPTO_DRV
VBUS_EN_SRC
FAULT
SCL
SDA
TSENSE
T 3
T 2
T 1
I²C slave
Internal supply
POR
CC/CV
Status register port status
Discharge path
Port C controller voltage monitoring
VCONN SW
OVP and OCP
CC line access
Device
Policy
Manager
Policy
Engine
Protocol
Layer
Physical
Layer
BMC driver
GND
FB
ISENSE_DISCH
VSENSE_DISCH
CC1
CC2
DS13141 - Rev 3 page 2/29
2 Inputs / Outputs
2.1
Pinout
Figure 2. QFN16 (3x3 mm) pinout (top view)
CC1
VCONN_VSYS
CC2
FAULT
1
2
3
4
16 15 14 13
12
11
10
9
5 6 7 8
VSENSE_DISCH
TSENSE
FB
OPTO_DRV
ISE
STUSB4761
Inputs / Outputs
DS13141 - Rev 3 page 3/29
STUSB4761
Pin list
2.2
Pin list
6
9
10
7
8
11
12
Pin
1
2
3
4
5
Name
CC1
VCONN_VSYS
CC2
FAULT
SCL
SDA
GND
ISENSE_DISCH
OPTO_DRV
FB
TSENSE
VSENSE_DISCH
13
14
15
16
VBUS_EN_SRC
VREG_1V2
VREG_2V7
VDD
Type
DI
AI
IO
OD
PWR
GND
Table 1. Pin function list
Type
20 V analog IO
PWR
20 V analog IO
OD
DI
DI/OD
PWR
20 V analog IO
20 V analog IO
Analog IO
Analog IO
20 V analog IO
20 V analog IO
PWR
PWR
20V PWR
Description Typical connection
Type-C configuration channel 1 To Type-C receptacle A5
5 V supply input for active plug 1 µF typ. protection capacitor
Type-C configuration channel 2 To Type-C receptacle B5
FAULT flag
I 2 C clock input
To user interface LED
To I²C master - ext. pull-up
I 2 C data input/output – active low open drain
Ground
Current sensing and discharge path
Optocoupler driver
To I²C master - ext. pull-up
Ground
From V
SRC
(system side)
To NMOS gate
Voltage / current regulation feedback input
Temperature sensing input
V
BUS
voltage monitoring and discharge path
V
BUS
source power path enable
– active low open drain
1.2 V internal regulator output
2.7 V internal regulator output
Main power supply (USB power line)
To compensation network
From NTC
From V
To switch pull-up
1 µF typ. decoupling capacitor
1 µF typ. decoupling capacitor
From V
BUS
SRC
(system side)
Table 2. Legend
Description
Digital input
Analog input
Bidirectional pad
Open drain output
Power supply
Ground
DS13141 - Rev 3 page 4/29
2.3.7
2.3.8
2.3.9
2.3
2.3.1
2.3.2
2.3.3
Note:
2.3.4
2.3.5
2.3.6
STUSB4761
Pin description
Pin description
CC1 / CC2
CC1 and CC2 are the configuration channel pins used for connection and attachment detection, plug orientation determination and system configuration management across USB Type-C cable.
VCONN_VSYS
This power input is connected to a power source that can be a 5 V power supply or a lithium battery. It is used to provide power to the local plug. It is internally connected to power switches that are protected against short-circuit and overvoltage. This does not require any protection on the input side. When a valid source-to-sink connection is determined and the V
CONN
power switches are enabled, V
CONN
is provided by the source to the unused CC pin
(see
) if power input is above 2.65 V. It is mandatory to supply this pin to allow overall power above 60 W or any power profile with current above 3 A.
FAULT
FAULT signal is asserted when T
3
temperature threshold is reached (see
1.
VDD goes below POR threshold
2.
Temperature decreases below T
1 this re-start condition is valid once. In case some errors occur again, condition 1 only becomes valid, allowing T
1 falling threshold output condition to be cleared/enabled again.
I²C interface
An IC interface can be used for non-volatile-memory customization (see
)
Name
SCL
SDA
Table 3. I 2 C interface pin list
Description
I²C clock - need external pull-up
I²C data - need external pull-up
GND
Ground.
ISENSE_DISCH
Current sensing and VBUS discharge signal. The shunt resistor must be placed between VDD and
ISENSE_DISCH for the correct current measurement. This pin is used to discharge high capacitive VBUS line (on system side). Discharge is enabled automatically during voltage down transitions, hard reset, error_recovery or cable disconnection.
FB
IC internal feedback loop compensation pin.
OPTO_DRV
Control signal used to drive the optocoupler.
TSENSE
Temperature sensing input pin. To be connected to an NTC.
If ambient temperature adaptive power and overtemperature protection is not used, connect 1 kΩ pull-up resistor to 1.2 V in order to disable temperature monitoring feature.
DS13141 - Rev 3 page 5/29
STUSB4761
Pin description
2.3.10
2.3.11
2.3.12
2.3.13
2.3.14
VSENSE_DISCH
This input pin is used to sense V
BUS
presence, monitor V
BUS
output voltage and V
BUS
discharge on USB Type-C receptacle side.
VBUS_EN_SRC
This pin enables the outgoing V
BUS
power when the connection to a sink is established and VDD is in the valid operating range. The open drain output allows a PMOS transistor to be driven directly.
VREG1V2
This pin is used only for external decoupling of 1.2 V internal regulator.
Recommended decoupling capacitor: 1 µF typ. (0.5 µF min.; 10 µF max.).
VREG2V7
This pin is used only for external decoupling of 2.7 V internal regulator.
Recommended decoupling capacitor: 1 µF typ. (0.5 µF min.; 10 µF max.).
VDD
This pin is the IC power supply and feedback loop input in CV mode.
This pin assures that before applying V
BUS
on type-C connector, voltage is in the range [3.9 V-6 V]. V not closed if VDD is not in this range at connection.
BUS
path is
DS13141 - Rev 3 page 6/29
STUSB4761
Features description
3 Features description
3.1
3.2
3.3
3.4
PDO customization
The STUSB4761 implements a default configuration (cf section §4) stored in a non-volatile-memory (NVM) and loaded at every power-ON. This configuration can be customized statically to align PD controller behavior according to final application requirements. Customization applies to various parameters such as: number of
PDO, voltage, current, discharge time, protection thresholds, etc..
Parameter customization is possible:
• Either by I²C interface direct access
• Or by using specific commands packaged as ST proprietary unstructured VDM when the STUSB4761 is connected in debug accessory mode (OrientedDebug Accessory.SRC state)
This process is recommended during end product manufacturing or testing. Once parameters have been overridden in non-volatile-memory, it does not immediately apply. The STUSB4761 must be unpowered first and new settings will apply after a power-on reset.
VCONN supply
The STUSB4761 features a 50 mA V
CONN
power switch with a fixed overcurrent protection (OCP) of 80 mA typical.
E-marked cable support
The STUSB4761 can check a type-C cable current capability and clamp to 3 A any PDO that is not compliant with the attached cable current ratings.
By default, passive cables support up to 3 A. If cable can support more than 3 A current, it must be marked electronically (EMCA = Electronically Marked Cables Assembly).
Therefore, the STUSB4761 communicates directly with a type-C e-marked cable. This check is performed after type-C attach and before starting a power negotiation. As a consequence, source power supply exposes any
PDO above 3 A only if cable is identified as able to sustain such current, otherwise PDOs are automatically clamped to 3 A so that sink never receives erroneous information versus the application sustainability.
The device, which can sink up to 5 A from a capable source, would be notified 3 A max. in case the cable current capability is not identified properly or not in line with the source capability.
Ambient temperature adaptive power and protection
The STUSB4761 embeds the temperature measurement and protection mechanism, used to prevent from ambient overheating conditions. A dedicated pin (TSENSE) is used to sense PCB temperature measured by an external NTC.
The STUSB4761 adjusts its USB PD output power (PDP) depending on temperature.
The temperature protection mechanism has 3 different thresholds, which can be adjusted with an appropriate external resistor value (see
Section 5.4 Reference schematic (full feature: up to 100 W, temperature adaptive power, LED)
).
DS13141 - Rev 3 page 7/29
DS13141 - Rev 3
STUSB4761
Ambient temperature adaptive power and protection
T a
T
1
T
2
T
3
Rising threshold
< 70 °C
70 °C
90 °C
110 °C
Table 4. Ambient temperature adaptive power and protection
Hysteresis
10 °C
10 °C
10 °C
Behavior
Default power profile (PDP_default)
Re-start
Temperature safe profile
(PDP_OTP)
New PDO applied with same voltage but reduced current value.
Customer or application dependent
Power safe profile (PDP_OTP_div2)
For every PDO, the current of the previous profile (PDP_OTP) is divided by 2
New negotiation with PDP_OTP power profile
New negotiation with
PDP_OTP_div2 power profile
Alert
Abort negotiation and disconnect.
FAULT signal asserted
V
BUS
switch open.
The application does not re-start unless:
1.
VDD goes below POR threshold
2.
Temperature decreases below
T
1
. In case same error occurs again, condition 1) becomes the only valid restart condition
Figure 3. OTP_FSM
Power-ON
T < T
1
default power profile:
PDP_default
(1)
T > T
1
Temperature safe profile:
PDP_OTP
(1)
T < T
1
°
T > T
2
T < T
2
°
Power safe profile:
PDP_OTP_div2
(2)
T > T
3
SHUT DOWN
T < T 1
°
Or un-plug
T < T
1
T
1
°
2
T
2
°
3 page 8/29
3.5
3.6
3.6.1
3.6.2
STUSB4761
Data role and VCONN SWAP
Data role and V
CONN
SWAP
The STUSB4761, as a source, can advertise itself as a data host or downstream facing port (DFP). In order to respond to unstructured message, the STUSB4761 supports incoming data role swap requests from the sink.
When request is acknowledged (if DR_SW_EN = ON), the STUSB4761 becomes UFP.
In the same way, the STUSB4761 supports incoming V
CONN
swap request from the sink. When the request is acknowledged, the port remains a source and the DFP/UFP roles remain unchanged.
Voltage and current regulation
Voltage regulation
Input voltage is sensed on VDD pin. Until a PD contract is negotiated, regulation is set to 5 V. In power delivery mode, the regulation aligns V
BUS
value on negotiated voltage value. Voltage regulation accuracy is 3% worst case.
•
CC MODE
V
BUS
current, used for regulation, is measured thanks to a 10 mOhms (default) shunt resistor between VDD and ISENSE_DISCH pins. In case the measured V
BUS
current reaches the regulation threshold, the STUSB4761 enters constant current (CC) mode: voltage is decreased down to the undervoltage (UVLO) condition defined for the selected contract if current does not decrease enough, which triggers the voltage monitoring alert; in this case, the STUSB4761 goes to error-recovery (see
Section 3.8 Hardware fault management ).
PDO current can be adjusted from 300 mA up to 5 A.
• Below 1 A, current regulation is effective about 130 mA or 260 mA (adjustable OCP threshold) above the current set.
Above 1 A, current regulation is effective when the measured current overcomes by either 12.5% or 25%
(adjustable OCP threshold) the current regulation reference
When the STUSB4761 is attached in Type-C mode, current regulation threshold is set to the STUSB4761 R p value: TYPEC_CURRENT (see
Section 4.1 Parameter overview ).
When the STUSB4761 is attached in USB PD mode, current regulation reference is set by default to the current value from the selected source PDO. Other configurations are possible as per table below:
1
(DEFAULT)
2
3
Table 5. Reference regulation current
Current from the STUSB4761 PDO selected by the sink:
I_SRC_PDO[RDO object position field]
Operating current of sink request:
RDO[operating current field]
Maximum operating current of sink request:
RDO[max. operating current field]
Table 6. OCP threshold
1
(DEFAULT)
2
12.5% above reference regulation current
25% above reference regulation current
1. If current > 1 A (otherwise +130 mA if current <1 A)
2. If current > 1 A (otherwise +260 mA if current <1 A)
In the other cases, the current regulation threshold is set to 300 mA:
•
•
At Power-On reset exit
When no sink device is attached
DS13141 - Rev 3 page 9/29
Figure 4. Current regulation
STUSB4761
High voltage protection
3.7
PDO voltage
5
9
12
15
20
PDO setting
15 V; 0.75 A
15 V; 2 A
Table 7. Reference regulation current
Accuracy@ 27 °C
Typical temperature drift
-40 °C to 27 °C 27 °C to 105 °C
[-20 mA; +100 mA]
[-10 mA; +130 mA]
[+20 mA; +160 mA]
[+40 mA; +180 mA]
[+80 mA; +220 mA]
-80 mA + 80 mA
Table 8. Example
OCP_Threshold setting CC regulation window@ 27 °C
12.5% - +130 mA
25% - +260 mA
12.5%
25%
[0.92 A; 1.06 A]
[1.05 A; 1.19 A]
[2.29 A; 2.43 A]
[2.54 A; 2.68 A]
CC regulation window@ [-40 °C;
105 °C]
[0.84 A; 1.14 A]
[0.97 A; 1.27 A]
[2.21 A; 2.51 A]
[2.46 A; 2.76 A]
High voltage protection
The STUSB4761 can be safely used in systems or connected to systems that handle high voltage on the V
BUS power path. The device integrates an internal circuitry on the CC pins that tolerates high voltages and ensures protection up to 22 V in case of unexpected short-circuits with the V
BUS
.
Short to 22 V is guaranteed as per figure below.
DS13141 - Rev 3 page 10/29
Figure 5. Short-to-VBUS
STUSB4761
Hardware fault management
3.8
3.9
Hardware fault management
Parameter
Ambient temperature
VDD
VBUS
CC pin and
VCONN switch
Thermal protection
Overvoltage
Undervoltage
Table 9. Hardware fault management
Fault type Behavior
See
Section 3.4 Ambient temperature adaptive power and protection
Goes to ErrorRecovery (ER).
V
BUS
path not asserted. Force detach (remove termination).
Re-init connection
Overvoltage
Undervoltage (3.125 ms blanking time)
VBUS not valid during attach
1.
Short to V
BUS
(up to 22 V)
2.
Overvoltage (6 V)
3.
Undervoltage (2.65 V)
4.
Reverse voltage
5.
Overcurrent (80 mA)
6.
Overheating
7.
ESD
Goes to ErrorRecovery (ER).
De-assert VBUS path. Force detach (remove termination). Reinit connection
1.
Power switch opened. ErrorRecovery
2.
Power switch opened. ErrorRecovery
3.
Power switch opened
4.
Power switch opened
5.
Current limit
6.
Power switch opened. ErrorRecovery
7.
Discharge event
Debug accessory detection
This mode is to be selected in order to access the STUSB4761 configuration via ST proprietary unstructured VDM
(see
).
DS13141 - Rev 3 page 11/29
STUSB4761
User-defined start-up configuration
4 User-defined start-up configuration
4.1
Parameter overview
The non-volatile-memory allows customer to customize the STUSB4761 default parameters. The default
). The list of customizable parameters is described in the table below:
Parameter
TYPEC_CURRENT (Rp)
SRC_PDO_NUMB
V_SRC_PDO(i)
I_SRC_PDO(i)
I_SRC_PDO_otp(i)
Table 10. Parameter overview
Description
Source current advertised on CC pin
Number of PDO
Default voltage value for SRC_PDO(i)
1≤ i ≤ SRC_PDO_NUMB
Default current value for every SRC_PDO(i)
(1≤ i ≤
SRC_PDO_NUMB)
Current value, for every
SRC_PDO(i), in overtemperature condition (T > T
1
)
Value Comments
USB default
1.5 A
3 A
From 2 to 5
To be ranked by increasing voltage value
Fixed value for SRC_PDO1 5 V
V_SRC_PDO_FLEX1
Flexible voltage value to be assigned to any SRC_PDO:
5 V < V_SRC_PDO ≤ 20 V by steps of 50 mV
V_SRC_PDO_FLEX2
Flexible voltage value to be assigned to any SRC_PDO:
5 V < V_SRC_PDO ≤ 20 V by steps of 50 mV
Flexible current
I_SRC_PDO_FLEX
Pre-defined current
I_SRC_PDO_FLEX
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Flexible value to be assigned to any
SRC_PDO:
300 mA < I_SRC_PDO_FLEX ≤ 5 A by steps of 10 mA
2.25 A
2.50 A
2.75 A
3.00 A
3.50 A
4.00 A
4.50 A
5.00 A
0.50 A
0.75 A
1.00 A
1.25 A
1.50 A
1.75 A
2.00 A
Flexible value to be assigned to any
SRC_PDO:
10 mA < I_SRC_PDO_FLEX < 5 A by steps of 10 mA
DS13141 - Rev 3 page 12/29
DS13141 - Rev 3
STUSB4761
Parameter overview
Parameter
I_SRC_PDO_otp(i)
VCONN_ENABLE
DR_SW_EN
VDM_CUSTOM_DIS
CC_ref_current
OCP_Threshold
V_UVLO
V_OVLO
SHUNT_RESISTOR
UNCONSTRAINED_POWER
V
CONN
Data role swap enable pins
Description
Current value, for every
SRC_PDO(i), in overtemperature condition (T > T
1
Constant current mode reference
) pin connection
Enable the STUSB4761 customization via CC
OCP threshold value
(see
Undervoltage lockout
Overvoltage lockout
Current regulation gain adjustment based on shunt value
Unconstrained power bit from fixed supply PDO
Value
Pre-defined current
No
Yes
Off
On
Off
On
Comments
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
2.50 A
2.75 A
3.00 A
3.50 A
4.00 A
4.50 A
5.00 A
0.50 A
0.75 A
1.00 A
1.25 A
1.50 A
1.75 A
2.00 A
2.25 A
V
CONN not supported, connected to
GND
V
CONN
supported, connected to
POWER
Data role swap not supported
Data role swap accepted
Factory customization via CC pin is available
Factory customization via CC pin is not possible
Current from STUSB4761 PDO selected by the sink
I_SRC_PDO[RDO object position field]
RDO[operating current field]
Operating current of sink request
RDO[max operating current field]
Maximum operating current of sink request
+ 12.5%
+ 25%
+12.5% (or +130 mA) above reference regulation current
(CC_ref_current)
+25% (or +260 mA) above reference regulation current
CC_ref_current)
By increments of 5%
By increments of 5%
From 5% to 20%
From 5% to 20%
10 mΩ
15 mΩ
25 mΩ
Off
On
No external source of power
An external source of power is available and is sufficient to adequately power the system while charging external devices page 13/29
4.2
STUSB4761
Factory settings
Parameter
USB_COMM_CAPABLE
Description
USB communications capable bit from fixed supply PDO
Value
No
Yes
Comments
Application does not support USB 2.0
or 3.x data
Application supports USB 2.0 or 3.x
data
Factory settings
PARAMETER
TYPEC_CURRENT
SRC_PDO_NUMB
DR_SW_EN
VCONN_ENABLE
VDM_CUSTOM_DIS
CC_ref_current
OCP_Threshold
SHUNT_RESISTOR
UNCONSTRAINED_POWER
USB_COMM_CAPABLE
Table 11. Factory settings
VALUE
3 A
5
ON
NO
OFF
I_SRC_PDO[RDO object position field]
+12.5%
10 mOhms
ON
NO
Table 12. Factory settings continued
PDO #
SRC_PDO1
SRC_PDO2
SRC_PDO3
SRC_PDO4
SRC_PDO5
Type
Fixed PDO
Fixed PDO
Fixed PDO
Fixed PDO
Fixed PDO
PD power
(default)
5 V; 3.00 A
9 V; 3.00 A
12 V; 3.00 A
15 V; 3.00 A
20 V; 2.25 A
PD power
(OTP)
2.00 A
2.00 A
2.00 A
2.00 A
2.00 A
Voltage
-5%
-5%
-5%
-5%
-5%
Voltage
+10%
+10%
+10%
+10%
+10%
1. PD power (PDP): The output power of a source, as specified by the manufacturer and expressed in fixed supply PDOs.
2. UVLO / OVLO accuracy: +/- 2% across temperature range.
DS13141 - Rev 3 page 14/29
STUSB4761
Applications
5
5.1
5.1.1
5.2
Applications
The following sections are not part of ST product specifications. They are intended to give a generic application overview to be used by the customer as a starting point for further implementation and customization. ST does not warrant compliance with customer specifications. Full system implementation and validation are under customer responsibility.
General information
Power supply
The STUSB4761 is supplied through the VDD pin. For application supporting more than 3 A (60 to 100 W
AC adapters typically), at the exception of captive cable implementations, VCONN support is mandatory and therefore, VCONN input pin must be supplied by a 3.3 V-5 V / 50 mA power.
Typical application ( up to 60 W- 3 A max.)
Figure 6. Typical implementation
Main1
Main2
ACDC Primary/Secondary Side
Dprim1
Cprim1
VDD
OUT
PWM
FB
SENSE
GND
Oprim1B
From Secondary
Side
CBulk1
G
D
S
RSP1
Dprim2
Cprim1
1000µF
Rprim1
1K
VSRC
RSC1
0.010
R10
100
T2
STL8P4LLF6 COM
T3
STL8P4LLF6
5 1 1 5
R11
47K
R13
402
C6
10µF
GND
Oprim1A
Optocoupleur
Opto
R33
15k
1V2
R22
R8
3K
2V7
GND
GND
C5
1µF
R4
1K
16
U1
Vdd
2
VConn_VSys
STUSB4761
ISense_Disch 8
VBus-EN_SRC 13
1V2
C2
1µF
15
7
VReg_2V7
14
VReg_1V2
Gnd
VSense_Disch 12
Type-C
Power Delivery
CC1 1
CC2 3
11
TSense SCL 5
C3 33nF 10
FB SDA 6
9
Opto_DRV Fault 4
GND
0
CC1
CC2
SCL
SDA
Fault
R1
4.7K
R2
2V7
4.7K
R3
4.7K
GND
R12
10K
GND
GND
D1
ESDA6V1
GND
VBUS
C18
10µF
D3
GND
J24
OUT
GND
DS13141 - Rev 3 page 15/29
5.3
5.4
STUSB4761
Minimal implementation (up to 60 W-3 A max., no temperature protection, no LED)
Minimal implementation (up to 60 W-3 A max., no temperature protection, no
LED)
Figure 7. Minimal implementation
Main1
ACDC Primary/Secondary Side
Main2
Dprim1
Cprim1
VDD
OUT
PWM
FB
SENSE
GND
Oprim1B
From Secondary
Side
CBulk1
G
D
S
RSP1
Dprim2
Cprim1
1000µF
VSRC
RSC1
0.010
1
T3
STL8P4LLF6
5
Rprim1
1K
R10
100
R11
47K
C6
10µF
GND
Oprim1A
Optocoupleur
Opto
R33
15k
1V2
R22
R8
3K
2V7
GND
GND
C5
1µF
R5
1K
C3 33nF
16
2
10
U1
Vdd
VConn_VSys
STUSB4761
1V2
C2
1µF
15
VReg_2V7
14
VReg_1V2
7
Gnd
VSense_Disch 12
Type-C
Power Delivery
CC1 1
CC2 3
11
TSense SCL 5
FB
9
Opto_DRV
GND
0
ISense_Disch 8
VBus-EN_SRC 13
SDA 6
Fault 4
CC1
CC2
SCL
SDA
Fault
R1
2V7
4.7K
R2
4.7K
R3
4.7K
GND
R12
10K
R13
402
GND
GND
D1
ESDA6V1
GND
VBUS
C18
10µF
D3
GND
J24
OUT
GND
Reference schematic (full feature: up to 100 W, temperature adaptive power,
LED)
Figure 8. Reference schematic
Main1
ACDC Primary/Secondary Side
Main2
Dprim1
Cprim1
VDD
OUT
PWM
FB
SENSE
GND
Oprim1B
From Secondary
Side
CBulk1
G
D
S
RSP1
Dprim2
Cprim1
1000µF
VSRC RSC1
0.010
T2
STL8P4LLF6 COM
T3
STL8P4LLF6
5 1 1 5
Rprim1
1K
Oprim1A
Optocoupleur
R33
15k
GND
Opto
4
U3
IN
LDK715M
GND
C1
1µF
OUT 5
VCONN
R10
100
R11
47K
C4
1µF
C6
10µF
GND
1V2
R22
2K7
GND
R23
R8
3K
Temp
GND
C5
1µF
16
U1
Vdd
STUSB4761
ISense_Disch 8
2V7
1V2
C2
1µF
2
15
7
11
VConn_VSys
VReg_2V7
14
VReg_1V2
Gnd
TSense
VBus-EN_SRC 13
VSense_Disch 12
Type-C
Power Delivery
CC1 1
CC2 3
SCL 5
C3 33nF 10
9
FB
Opto_DRV
GND
0
SDA 6
Fault 4
CC1
CC2
SCL
SDA
Fault
R1
4.7K
R2
4.7K
R3
4.7K
2V7
GND
R12
10K
R13
402
R24
150K
1 G
D
2N7002K
S
GND
R25
3.9K
D8
VBus
T4
GND
D1
ESDA6V1
GND
GND
VBUS
D+
RD1
100
D-
C18
10µF
D3
GND
J24
OUT
DD+
GND
•
•
Temperature threshold settings for: T1 = 70 °C; T2 = 90 °C; T3 = 110 °C
• VReg_1V2 = 1.148 V
R22 = 2.7 kOhms (1% accuracy)
R23 = 47 kOhms (ref = NTCS0603E3473JHT)
DS13141 - Rev 3 page 16/29
Tsense_T
1
Tsense_T
2
Tsense_T
3
STUSB4761
Reference schematic (full feature: up to 100 W, temperature adaptive power, LED)
Table 13. Voltage and temperature thresholds
STUSB4761 voltage thresholds (typ.)
Rising Falling
0.873 V 0.933 V
0.713 V
0.548 V
0.791 V
0.630 V
Rising
70 °C
90 °C
110 °C
Temperature
(typ.)
Falling
60 °C
80 °C
100 °C
DS13141 - Rev 3 page 17/29
6 Electrical characteristics
6.1
Absolute maximum ratings
Symbol
V
DD
V
CONN_VSYS
V
CC1,
V
CC2
V
VBUS_EN_SRC
V
VSENSE_DISCH
V
ISENSE_DISCH
V
OPTO_DRV
V
SDA, SCL
V
TSENSE
V
FAULT
V
FB
T
STG
T
J
ESD
Table 14. Absolute maximum ratings
Parameter
Supply voltage
V
CONN
voltage
High voltage on CC pins
Value
28
6
22
High voltage on V
BUS
pins
Operating voltage on I/O pins
Storage temperature
Maximum junction temperature
HBM
CDM
28
-0.3 to 6
-55 to 150
145
4
1.5
STUSB4761
Electrical characteristics
Unit
V
V
V
V
V
°C
°C kV
DS13141 - Rev 3 page 18/29
6.2
STUSB4761
Operating conditions
Operating conditions
Table 15. Operating conditions
Symbol
V
DD
V
CONN_VSYS
V
CC1,
V
CC2
V
VBUS_EN_SRC
V
VSENSE_DISCH
V
ISENSE_DISCH
V
OPTO_DRV
V
SDA, SCL
V
TSENSE
V
FAULT
V
FB
T
A
Supply voltage
V
CONN
voltage
CC pins
Parameter
High voltage pins
Operating voltage on I/O pins
Operating temperature
Value
4.1 to 22
3.0 to 5.5
0 to 5.5
0 to 22
0 to 4.5
-40 to 105
Unit
V
V
V
V
V
°C
1. Transient voltage on CC1 and CC2 pins are allowed to go down to -0.3 during BMC communication from connected devices. All voltages are referenced to GND.
DS13141 - Rev 3 page 19/29
STUSB4761
Electrical and timing characteristics
6.3
R
VCONN
I
OCP
V
OVP
V th
(T
1
)
V th
(T
2
)
V th
(T
3
)
V
IH
V
IL
V
OL
Electrical and timing characteristics
Unless otherwise specified: V
DD
= 5 V, T
A
= +25 °C, all voltages are referenced to GND.
Symbol
I
DD(SRC)
I
STDBY
T
LOAD
V
UVP
V
OL
I max (VSENSE_DISCH)
I max (ISENSE_DISCH)
Table 16. Electrical and timing characteristics
Current consumption
Standby current consumption
I²C registers loading time from NVM
V
CONN
Parameter
power path resistance
Conditions
Device attached
(connected, PD communication, CCCV regulating @20 V)
-40 °C < T
A
< +105 °C
Device idle (not connected, no communication, CCCV regulating @5V)
-40 °C < TA < +105 °C
At power-up or after a reset
V
CONN
power switches
I
VCONN
= 0.050 A
-40 °C < T
A
< +105 °C
VCONN_VSYS = 3.3 V Overcurrent protection
Overvoltage protection on CC output pins
Undervoltage protection on VCONN_VSYS input pin
Temperature safe profile threshold
Power safe profile threshold
Rising
(typical hysteresis =
22.5 mV)
TSENSE detection threshold
Rising Temperature
Falling Temperature
Rising Temperature
Falling Temperature
Rising Temperature
Alert threshold
Falling Temperature
Digital input/output (SCL, SDA)
High level input voltage
Min.
720
450
70
5.8
2.6
1.2
Low level input voltage
Low level output voltage I oh
= 3 mA
20 V open-drain ouputs (VBUS_EN_SRC)
Low level output voltage I oh
= 3 mA
Discharge pins (VSENSE_DISCH, ISENSE_DISCH)
Maximum discharge current
Typ.
900
550
2.65
0.873
0.933
0.713
0.791
0.548
0.630
5
80
6.0
Max.
1080
650
30
2.7
0.35
0.4
0.4
0.05
0.50
7.1
90
6.2
Unit
μA
μA ms
V
V
V
V
V
V
V
A
A
Ω mA
V
V
DS13141 - Rev 3 page 20/29
6.4
Thermal information
Symbol
R
θJA
R
θJC
Table 17. Thermal information
Parameter
Junction-to-ambient thermal resistance
Junction-to-case thermal resistance
Value
78
30
STUSB4761
Thermal information
Unit
°C/W
°C/W
DS13141 - Rev 3 page 21/29
7
7.1
STUSB4761
Package information
Package information
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com
. ECOPACK is an ST trademark.
QFN 16 (3x3 mm), pitch 0.50 package information
Figure 9. QFN 16 (3x3 mm) package outline
DS13141 - Rev 3 page 22/29
Note:
STUSB4761
QFN 16 (3x3 mm), pitch 0.50 package information
Symbol e
L aaa bbb ccc
A
A1 b
D
E ddd eee n nD nE
Table 18. QFN 16 (3x3 mm) mechanical data mm
Typ.
Min.
0.5
0
0.18
0.40
0.25
3.00 bsc
3.00 bsc
0.50
0.50
16
4
4
0.60
0.15
0.10
0.10
0.05
0.08
Max.
0.65
0.05
0.30
1.
N is the total number of terminals
2.
nD and nE refer to the number of terminals on D and E side respectively
3.
Dimensions b applies to metallized terminal and is measured between 0.15 mm and 0.30 mm from the terminal tip. If the terminal has the optional radius on the other end of the terminal, the dimension b should not be measured on that radius area
DS13141 - Rev 3 page 23/29
STUSB4761
Revision history
Date
19-Nov-2019
20-May-2021
08-Sep-2021 3
Table 19. Document revision history
Version
1
2
Changes
Initial release.
Updated Table 18. QFN 16 (3x3 mm) mechanical data
.
Updated Section 2.3.2 VCONN_VSYS
,
Section 5.2 Typical application ( up to 60 W- 3 A max.) ,
Section 5.3 Minimal implementation (up to 60 W-3 A max., no temperature protection, no LED)
.
Updated Figure 6. Typical implementation
,
Figure 7. Minimal implementation
and
.
DS13141 - Rev 3 page 24/29
STUSB4761
Contents
Contents
DS13141 - Rev 3 page 25/29
STUSB4761
Contents
Minimal implementation (up to 60 W-3 A max., no temperature protection, no LED) . . . . . . 16
Reference schematic (full feature: up to 100 W, temperature adaptive power, LED) . . . . . . 16
DS13141 - Rev 3 page 26/29
STUSB4761
List of tables
List of tables
DS13141 - Rev 3 page 27/29
STUSB4761
List of figures
List of figures
DS13141 - Rev 3 page 28/29
STUSB4761
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DS13141 - Rev 3 page 29/29
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