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EVAL6472H-DISC
L6472 Discovery: development tool to explore L6472 motor driver
Data brief
Description
The L6472 Discovery is a low cost development
tool to explore the L6472 motor driver.
An ideal starter-kit for both beginners and
experienced users, it is autonomous and can be
used with a software interface or with a custom
firmware thanks to the embedded microcontroller.
Through the available GUI the user can easily set
the full configuration of application parameters.
“Plug and Play” tool it offers high motor control
flexibility thanks to the wide operating voltage
range from 8 V to 45 V and the current capability
up to 3 Ar.m.s. It is equipped with LED indicators
for specific ready, busy, error warning.
Features
 STMicroelectronics® patented advanced
current control
 Fully autonomous solution embedding an
STM32™ MCU and the L6472 stepper motor
driver
 Compatible with SPIN family evaluation
software
 Wide voltage range from 8 V to 45 V
 High phase current up to 3 Ar.m.s
 Footprint for external resonator or crystal
 Switch motor input control
 Keys start/left - stop/right - reset
 Ready, busy, error LED indicators
 Spare LED indicators for specific design
 Adjustable supply voltage compensation
 Up to 1/16 microstepping
March 2015
DocID025448 Rev 4
For further information contact your local STMicroelectronics sales office.
1/10
www.st.com
Board description
EVAL6472H-DISC
Board description
Table 1. Electrical specifications
Parameter
Value
Supply voltage (VS)
8 to 45 V
Maximum output current (each phase)
3 Ar.m.s
Logic supply voltage (VREG)
3 V (internal supply)
Logic interface voltage (VDD)
3.3 V (internal supply)
Low level logic inputs voltage
0V
High level logic input voltage
VDD
Stepping
Up to 1/16 microstepping
Operating temperature
-25 to 125 °C
Figure 1. Jumper and connector locations
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EVAL6472H-DISC
Board description
Table 2. Jumpers and connectors
Name
Function
J1
Motor supply voltage
J2
Bridge B output
J3
Bridge A output
J4
Debug JTAG function
J5
USB function
J6
Boot mode
J7
External switch input
R29
OSCIN and OUSCOUT pins
TP1
VDD - logic supply voltage
TP2
VS - motor supply voltage
TP3
GND - ground test point
TP4
UART RX - debug test point
TP5
UART TX - debug test point
TP6
UART CK - debug test point
TP7
Motor voltage compensation test point
Table 3. JTAG connector pinout (J4)
Name
Type
Function
1-2
Supply
EXT_VDD
3
Digital I/O
External RESET
5
Digital I/O
INPUT (TDI)
7
Digital I/O
Mode select (TMS)
9
Digital I/O
Clock (TCK)
13
Digital I/O
OUTPUT (TDO)
15
Digital I/O
Internal RESET
11 - 17 - 19
Digital I/O
Pull down
4 - 6 - 8 - 10 - 12 - 14 - 16 - 18 20
Ground
Ground
DocID025448 Rev 4
3/10
10
Board description
EVAL6472H-DISC
Figure 2. Schematic (microcontroller control part)
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4/10
DocID025448 Rev 4
EVAL6472H-DISC
Board description
Figure 3. Schematic (motion control part)
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DocID025448 Rev 4
5/10
10
Board description
EVAL6472H-DISC
Table 4. Bill of material
Item
Quantity
Reference
Value
Package
C1, C16
2
Cap. cer. 10 µF 10 V X7R 0805
10 µF
0805
C2
1
Cap. cer. 1 µF 10 V X7R 0805
1 µF
0805
C3, C4, C10 C13, C17 C19, C21,
C22, C25 C27
14
Cap. cer. 100 nF 50 V X7R 0603
100 nF
0603
C5
1
Cap. cer. 3.3 nF 50 V X7R 0603
3.3 nF
0603
C6
1
Cap. cer. 220 nF 35 V X7R 0603
220 nF
0603
C7
1
Cap. cer. 4.7 nF 50 V X7R 0603
4.7 nF
0603
C8, C15,
C20, C28
4
Cap. cer. 10 nF 50 V X7R 0603
10 nF
0603
C9
1
Cap. tant. 47 µF 6.3 V 10%
PACK-A
47 µF
3216
C14
1
Cap. elect.100 µF 63 V
100 µF
CAPES-R10HXX
C23, C24
2
Cap. cer. 20 pF 50 V COG 0603
20 pF
0603
D1
1
Zener regulator
3.6 V
SOD 523
D2
1
Double diode high speed
switching diode
BAV99
SOT23
D3
1
LED red - 0805 -2 mcd - 621 nm
Red
0805
D4
1
LED green - 0805 - 6 mcd - 569
nm
Green
0805
D5
1
LED yellow - 0805 -6 mcd - 588
nm
Yellow
0805
D6
1
LED orange - 0805 -2 mcd - 602
nm
Orange
0805
FIX1 - FIX4
4
Hole
J1 - J3
3
Screw connector 2 poles MKDSN
1.5 / 2 - 5.08
J4
1
JTAG CON-FLAT-10 x 2 - 180 M CON-FLAT-10 x 2 - 180 M CON-FLAT-10 x 2 -180 M
J5
1
USB_B_MINI_AMP_1734035-1
CN-USB
CMS mini-USB
J6, J7
2
JUMP254P-M-2
Open
Strip 2 x 2.54
MIRE1 MIRE3
3
OPTICAL_TARGET
OPTICAL_TARGET
Diam. 1 mn
R1
1
Trimmer 200 K
200 K
Trimm. 100 x 50 x 110
R2
1
27 K 5% 1/10 W
27 K
0603
R3
1
Res. 7.5 K 5% 1/10 W 0603
SMD
7.5 K
0603
R4, R13
2
Res. 1 M 1/10 W 5% 0603
SMD
1 M
0603
6/10
MKDSN1.5 / 2 - 5.08
DocID025448 Rev 4
MKDSN1.5 / 2 - 5.08
EVAL6472H-DISC
Board description
Table 4. Bill of material (continued)
Item
Quantity
Reference
Value
Package
R5
1
Res. 1.5 K 1/10 W 5% 0603
SMD
1.5 K
0603
R6, R8 - R11,
R14, R19,
R30 - R32
10
Res. 10 K 5% 1/10W 0603
SMD
10 K
0603
R7, R12
2
Res. 100  5% 1/10 W
100 
0603
R15 - R18
4
Res. 470  5% 1/10 W 0603
470 
0603
R20, R22,
R23, R34
4
Res. NP 0603
NP
0603
R21, R33
2
Res. 1 K 5% 1/10 W 0603 SMD
1 K
0603
R24 - R27
4
Res. 4.7 K 5% 1/10 W 0603
SMD
4.7 K
0603
R28
1
Res. 100 K 5% 1/10 W 0603
SMD
100 K
0603
R29
1
Res. NP 0805
NP
0805
S1-S3
3
Switch button SMD
EVQQ2D03W
CMS 6.5 x 6 x 3.1
TP1, TP2,
TP4 - TP7
6
Test point red
Keystone - 5000
TH
TP3
1
Test point black
Keystone - 5001
TH
U1
1
IC reg. 1300 MA LN 3.3 V
LD1117D33TR
SO8
U2
1
UBSLC6-2P6 - ESD protection
low capacitance
USBLC6-2P6
SOT 666
U3
1
L6472 motor driver
L6472H
HTSSOP28
U4
1
IC, MCU, RISC, 72 MHz, 3.6 V,
32-bit, 64-pin, LQFP
STM32F105RBT6
LQFP64 10 x 10
Y1
1
Xtal 8 MHz - 30 PPM - 20 pF
8 MHz
HC49/US-SM
DocID025448 Rev 4
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Board description
EVAL6472H-DISC
Figure 4. Layout (top layer)
Figure 5. Layout (bottom layer)
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EVAL6472H-DISC
1
Revision history
Revision history
Table 5. Document revision history
Date
Revision
30-Oct-2013
1
Initial release.
2
Updated board photography on page 1.
Updated Figure 1 on page 2 (updated board
photography).
Minor modifications throughout document.
3
Updated main title on page 1 (replaced “dSPIN™
Discovery L6472” by “dSPIN™ Discovery: development
tool to explore dSPIN™ (L6472) motor driver”).
Updated Section : Features on page 1 (replaced whole
original Section by new Features).
Updated Section : Description on page 1 (replaced
original Section by new Description).
Minor modifications throughout document.
4
Updated main title on on page 1 (removed dSPIN™).
Updated Section : Features on page 1 (replaced
L6470H by L6472H).
Updated Section : Description on page 1 (replaced
dSPIN™ by L6472H).
Updated Table 4 on page 6 (U3, column Reference:
“L6472 motor driver” instead of “dSPIN microstepping
motor driven”).
Removed Figure 4. Layout (silk screen) from page 8.
29-Nov-2013
17-Jan-2014
17-Mar-2015
Changes
DocID025448 Rev 4
9/10
10
EVAL6472H-DISC
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DocID025448 Rev 4
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