UM3315
User manual
Stepper motor driver evaluation board based on the L6480
Introduction
The EVL6480 is a stepper motor driver evaluation board based on the L6480.
It provides an affordable and easy-to-use solution to drive a stepper motor in your application.
The L6480 device, created using analog mixed signal technology, is an advanced, fully integrated solution suitable for driving
two-phase bipolar stepper motors with microstepping. It integrates a dual full bridge gate driver for N-channel MOSFET power
stages with embedded non-dissipative overcurrent protection. Thanks to a unique voltage driving mode, which compensates for
BEMF, bus voltage and motor winding variations, the microstepping of a true 1/128-step resolution is achieved. The digital
control core can generate user-defined motion profiles with acceleration, deceleration, speed, or target position, which are easily
programmed through a dedicated set of registers. All application commands and data registers, including those used to set
analog values (that is: current protection trip point, deadtime, PWM frequency, etc.) are sent through a standard 5-Mbit/s SPI. A
complete set of protections (thermal, low bus voltage, overcurrent, and motor stall) makes the L6480 device fully protected, as
required by the most demanding motor control applications.
The EVL6480 is compatible with the Arduino® UNO R3 connector and supports the addition of other boards, which can be
stacked to drive up to three stepper motors.
Figure 1. EVL6480 board
UM3315 - Rev 1 - March 2024
For further information contact your local STMicroelectronics sales office.
www.st.com
UM3315
Getting started
1
Getting started
The EVL6480 evaluation board is a stepper motor driver covering a wide range of applications which can be used
with supply voltages ranging from 7.5 V to 85 V.
Follow this procedure to start your evaluation:
1.
Check the setting of the jumpers based on your configuration as described in Section 2 Hardware
description and configuration
2.
Connect the board with the STM32 Nucleo board through Arduino UNO R3
3.
Supply the board through input 2 (VS) and 1 (ground) of the connector CN2
4.
The power OK (green) and fault (red) LEDs turn on
In order to use the EVL6480 in conjunction with the STSPIN Studio, please visit www.st.com.
Up to three evaluation boards can be stacked on the same STM32 Nucleo board, as described in
Section 2.2 Multi-motor configuration.
Further support material is available on the respective product pages on www.st.com.
UM3315 - Rev 1
page 2/13
UM3315
Hardware description andconfiguration
2
Hardware description and configuration
Figure 2. EVL6480 board overview
CN8
Arduino Uno R3 connector
Power-up LED
CN6
Arduino Uno R3 connector
CN1
Motor phases connector
3.3 V LED indicator
External switch connector
CN2
Power connector
R25, R26, R27
Chip select SPI lines
Status flag LED
CN5
Arduino Uno R3 connector
Busy/Sync LED
CN9
Arduino Uno R3 connector
The following table provides the detailed pinout of the Arduino UNO R3.
Table 1. Arduino UNO R3 connector table
Pin(1)
Connector
CN5
CN9
CN8
CN6
Signal
Remarks
1
SPI chip select 1
See Section 2.2 Multi-motor configuration
2
SPI chip select 2
See Section 2.2 Multi-motor configuration
3
SPI chip select 3
See Section 2.2 Multi-motor configuration
4
SPI MOSI
5
SPI MISO
6
SPI SCK
7
Ground
4
STBY\RESET
6
STCK
5
FLAG
6
BUSY\SYNC
2
VDD
6
Ground
7
Ground
See Section 2.1 Selecting the chip select line of the SPI
See Section 2.2 Multi-motor configuration
Step-clock input
1. All non-listed pins are not connected.
2.1
Selecting the chip select line of the SPI
The chip select line of the SPI interface can be selected through dedicated resistors as indicated in Table 2: "Chip
select line selection".
UM3315 - Rev 1
page 3/13
UM3315
Multi-motor configuration
Table 2. Chip select line selection table
2.2
R25
R26
R27
CS line
0R
Not mounted
Not mounted
CN5 pin 1 (default)
Not mounted
0R
Not mounted
CN5 pin 2
Not mounted
Not mounted
0R
CN5 pin 3
Multi-motor configuration
The evaluation boards can be stacked on a single STM32 Nucleo board to drive up to three stepper motors (one
for each motor).
By default, the stepper driver board is configured for a motor driven by chip select line 1 of the SPI, so the board
configuration for multi-motor setups must be changed in accordance with Table 2 before stacking the boards on
the STM32 Nucleo.
The stacked boards exploit the same step-clock signal and share the same fault and busy pins.
2.3
External switch connection
An external switch can be connected to J1 to stop the motor movement when the switch status changes. For
proper management of this additional feature of the L6480 device, refer to section “External switch (SW pin)” of
the related datasheet (see www.st.com).
2.4
Supply management and voltage regulators
The EVL6480 integrates a supply circuitry to allow a flexible supply management of the device.
By default, the gate driver supply (VCC) is obtained by the internal voltage regulator connected to the external VS
and the logic supply (VREG) is obtained from the STM32 Nucleo (VDD).
However, the user can change this configuration by acting on the resistors R10, R12, R13, R14, and R16 as
indicated in Table 3. For further details, refer to section “Supply management and internal voltage regulators” of
the related datasheet.
It must be noted that, as the 3.3 V regulator of the EVL6480 devices is not designed to supply external
components, the J2 jumper must be removed in case the logic supply is internally obtained.
Table 3. Board supply management
Externally provided
Gate driver supply (VCC)
•
•
R10 not mounted
R12 mounted
•
•
•
R13 not mounted
R14 and R16 mounted
J2 closed
Default configuration
Logic supply (VREG)
UM3315 - Rev 1
Internally generated
Default configuration
•
•
R12 not mounted
R10 mounted
•
•
•
R14 and R16 not mounted
R13 mounted
J2 open
page 4/13
UM3315
Safety precautions
3
Safety precautions
Warning:
Some of the components mounted on the board could reach hazardous temperatures
during operation.
While using the board, the following precautions must be observed:
•
•
•
•
UM3315 - Rev 1
Do not touch the components or the heatsink.
Do not cover the board.
Do not put the board in contact with flammable materials or with materials releasing smoke when heated.
After operation, allow the board to cool down before touching it.
page 5/13
UM3315
Bill of material
4
Bill of material
Table 4. EVL6480 bill of material
Item Q.ty
UM3315 - Rev 1
Ref.
Part/Value
Description
Manufact.
Order code
1
1
CN1
Connector
5.08 mm
Close vertical
CON-1x4
Wurth Elektronik
691312510004 or
equivalent
2
1
CN2
Connector
5.08 mm
Close vertical
CON-1x2
Wurth Elektronik
691312510002 or
equivalent
3
1
CN5
Connector
through-holepitch 2.54
CON-1x10
Samtec
SSQ-110-04-F-S
or equivalent
4
2
CN6,CN9
Connector
through-holepitch 2.54
CON-1x8
Samtec
SSQ-108-04-F-S
or equivalent
5
2
CN7,CN10
Connector
through-holepitch 2.54
N.M.
6
1
CN8
Connector
through-holepitch 2.54
CON-1x6
Samtec
SSQ-106-04-F-S
or equivalent
7
1
C1
SMT
aluminum
elect.
capacitor
100uF/100V Vishay
8
2
C2,C3
SMT ceramic
capacitor
100nF/100V
9
2
C4,C9
SMT ceramic
capacitor
220nF/35V
10
1
C5
SMT ceramic
capacitor
10nF/100V
11
1
C6
SMT ceramic
capacitor
220nF/100V
12
1
C7
SMT ceramic
capacitor
470nF/35V
13
1
C8
Tantalum
SMD
capacitor
22uF/16V
14
1
C10
SMT ceramic
capacitor
100nF/35V
15
1
C11
SMT ceramic
capacitor
N.M.
16
1
C12
SMT ceramic
capacitor
10nF/35V
17
5
D1,D2,D3,D4,D6
Yellow LED
YELLOW
18
1
D5
Red LED
RED
BAR43
GREEN
19
1
D7
Double diode
high-speed
switching
diode
20
1
D8
Green LED
MAL214699906E3
or equivalent
STMicroelectronics BAR43SFILM
page 6/13
UM3315
Bill of material
Item Q.ty
Part/Value
Description
Manufact.
Order code
21
2
D9,D10
Small signal
Schottky
diode
BAT46J
22
1
D11
3.3V Zener
diode
N.M.
23
1
J1
Strip
connector 2
OPEN
pos, 2.54 mm
Wurth Elektronik
61300211121 or
equivalent
24
1
J2
Strip
connector 2
CLOSED
pos, 2.54 mm
Wurth Elektronik
61300211121 or
equivalent
STL8N10F7
STMicroelectronics STL8N10F7
STMicroelectronics BAT46JFILM
BZX84J-B3V6 or
equivalent
25
8
Q1,Q2,Q3,Q4,Q5,Q6,Q7,Q8
N-channel
100V,
17mohm
power
MOSFET
26
3
R1,R3,R15
SMT resistor
330R
27
4
R2,R4,R5,R11
SMT resistor
39K
28
4
R6,R7,R8,R9
SMT resistor
10K-1/2W
29
11
R10,R14,R16,R20,R21,R22,R23,R24,R25,R28,R29 SMT resistor
0R
30
7
R12,R13,R17,R18,R26,R27,R30
SMT resistor
N.M.
31
1
R19
SMT resistor
100R
32
5
TP1,TP2,TP3,TP4,TP5
SMT test
point -1.6mm
TESTPOINT Harwin
33
1
U1
Microstepping
motor
L6480H
controller
STMicroelectronics L6480
1
Connector
5.08 mm
horizontal
with hook on
wire side
CON-1x4
Wurth Elektronik
691351500004 or
equivalent
1
Connector
5.08 mm
horizontal
with hook on
wire side
CON-1x2
Wurth Elektronik
691351500002 or
equivalent
34
35
UM3315 - Rev 1
Ref.
S1751-46R or
equivalent
page 7/13
UM3315
Schematic diagram
5
Schematic diagram
Figure 3. EVL6480 schematic diagram
CN7
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
CN6
VDD
1
2
3
4
5
6
7
8
VDDIO
C4
2
3
VCC
VS REG
6
VS
HVGB1
OUTB1
LVGB1
A+
2
AB-
3
HVGA2
OUTA2
LVGA2
B+
HVGB1
OUTB1
LVGB1
22
21
20
R6
10K
2
R7
10K
CN1
1
YELLOW YELLOW YELLOW YELLOW
1
17
18
19
TP 5
D4
D4
2
2
D1
D3
D3
R8
10K
GND
2
Vin
CN2
1
36
37
38
D2
D2
2
HVGA1
OUTA1
LVGA1
R9
10K
P GND
HVGB2
OUTB2
LVGB2
35
P GND
23
P GND
HVGB2
OUTB2
LVGB2
3
2
1
1
HVGA2
OUTA2
LVGA2
U1
L6480
1
4
1
9
CP
VBOOT
7
VS REG
VCC
12
10
11
VCCREG
13
VDDIO
SDI
SDO
TP 4
HVGA1
OUTA1
LVGA1
CS
CK
29
R11
39K
CS_1
CS_2
CS_3
SDI
SDO
CK
STCK_TIM3_CH1
R25 0R
R26 NP
R27 NP
R28 0R
R29 0R
R23 0R
1
2
3
4
5
6
7
8
9
10
STBY_RES
1
2
3
4
5
6
7
8
R20 0R
R24 0R
2
100UF
63V
YELLOW
D6
1
2
1
+ C1
100NF
TP 2
8
26
28
STCK
STBY_RES
FLAG
BUSY_SYNC
NC
2
24
25
R5
39K
R4
39K
BUSY
32
34
31
30
4
D11
NP
C11
NP
VDD
R2
39K
C2
100NF
TP 1
ADCIN
SW
AGND
100R
C12
10NF
OSCIN
OSCOUT
16
1
2
1
J1
5
33
VREG
27
R17
NP
R19
14
15
DGND
VS
D5
Re d
C3
1
TP 3
R30
NP
R18
NP
VCCREG
VDDIO
FLAG
BUSY_SYNC
VREG
R21 0R
R22 0R
CON-1x6
S TRIP 254P -F-6
FLAG
BAR43
C5
10NF
EP AD
1
2
3
4
5
6
R3
330R
D7
2
CN8
CON-2x19
R1
330R
VS
220NF
1
CON-1x8
S TRIP 254P -F-8
39
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
CN5
CON-1x10
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1
CN9
CON-1x8
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
CN10
CON-2x19
VS
6 7 8
1 2 3
LVGA1
6 7 8
4
4
HVGA2
VS
8 7 6
S TL8N10F7
5
Q2
5
Q3
3 2 1
OUTA2
S TL8N10F7
OUTA1
S TL8N10F7
4
HVGA1
8 7 6
S TL8N10F7
5
Q1
1 2 3
R10
0R
5
Q4
4
LVGA2
D9
BAT46J
VS REG
3 2 1
R12
NP
C6
220NF
VCC
D10
BAT46J
VS
R13
NP
C7
470NF
J2
5
Q6
LVGB1
1 2 3
4
1 2 3
HVGB2
3 2 1
8 7 6
+ C8
22UF
R15
D8
Gre e n
C9
220NF
VREG
5
Q8
4
3 2 1
2
330R
R14
0R
2
S TL8N10F7
OUTB2
6 7 8
1
VCCREG
1
OUTB1
5
Q7
4
S TL8N10F7
4
S TL8N10F7
HVGB1
8 7 6
S TL8N10F7
5
Q5
6 7 8
R16
0R
LVGB2
VDD
VDDIO
C10
100NF
UM3315 - Rev 1
page 8/13
UM3315
Revision history
Table 5. Document revision history
UM3315 - Rev 1
Date
Version
18-Mar-2024
1
Changes
Initial release.
page 9/13
UM3315
Contents
Contents
1
Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2
Hardware description and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1
Selecting the chip select line of the SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2
Multi-motor configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3
External switch connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4
Supply management and voltage regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Safety precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
4
Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5
Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
UM3315 - Rev 1
page 10/13
UM3315
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Arduino UNO R3 connector table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chip select line selection table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Board supply management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
EVL6480 bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
UM3315 - Rev 1
page 11/13
UM3315
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
UM3315 - Rev 1
EVL6480 board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
EVL6480 board overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
EVL6480 schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
page 12/13
UM3315
IMPORTANT NOTICE – READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST
products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST
products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgment.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of
purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. For additional information about ST trademarks, refer to www.st.com/trademarks. All other product or service names
are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2024 STMicroelectronics – All rights reserved
UM3315 - Rev 1
page 13/13
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