EVAL6470H-DISC
L6470 Discovery: development tool to explore L6470 motor driver
Data brief
Description
The L6470 Discovery is a low cost development
tool to explore the L6470 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
Voltage mode driving featuring extreme
smoothness
Up to 1/128 microstepping
Fully autonomous solution embedding an
STM32™ MCU and the L6470H 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 optimized 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
March 2015
DocID025447 Rev 4
For further information contact your local STMicroelectronics sales office.
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www.st.com
Board description
EVAL6470H-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 1/128 microstepping
Operating temperature
-25 to 125 °C
Figure 1. Jumper and connector locations
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DocID025447 Rev 4
EVAL6470H-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
DocID025447 Rev 4
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Board description
EVAL6470H-DISC
Figure 2. Schematic (power supply part)
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DocID025447 Rev 4
EVAL6470H-DISC
Board description
Figure 4. Schematic (motion control part)
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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
SOT 23
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
DocID025447 Rev 4
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Board description
EVAL6470H-DISC
Table 4. Bill of material (continued)
Item
Quantity
Reference
Value
Package
FIX1 - FIX4
4
Hole
3 mn
-
J1 - J3
3
Screw connector 2 poles MKDSN 1.5 /
2 - 5.08
MKDSN1.5 /
2 - 5.08
MKDSN1.5 /
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
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% 1/10 W 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, R33
2
Res. 1 K 5% 1/10 W 0603 SMD
1 K
0603
R21 - R23, R34
4
Res. NP 0603
NP
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
L6470 motor driver
L6470H
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
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DocID025447 Rev 4
EVAL6470H-DISC
Board description
Figure 5. Layout (top layer)
Figure 6. Layout (bottom layer)
DocID025447 Rev 4
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Revision history
EVAL6470H-DISC
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 L6470” by “dSPIN™ Discovery: development
tool to explore dSPIN™ (L6470) 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 : Description on page 1 (replaced
dSPIN™ by L6470H).
Updated Table 4 on page 5 (U3, column Reference:
“L6470 motor driver” instead of “dSPIN microstepping
motor driven”).
Removed Figure 5. Layout (silk screen) from page 7.
29-Nov-2013
17-Jan-2014
16-Mar-2015
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Changes
DocID025447 Rev 4
EVAL6470H-DISC
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