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UM3206
User manual
Getting started with the EVSPIN948 dual brushed DC motor driver expansion
board based on the STSPIN948
Introduction
The EVSPIN948 dual brushed DC motor driver expansion board is based on the STSPIN948.
It provides an affordable and easy-to-use solution for the implementation of brushed DC motor driving applications. Thanks to
the parallel operation, it can be easily converted to a single brushed DC motor driver with double current capability. In addition to
the internal current limiters, the integrated amplifiers allow it to be used in systems with external current control. The
EVSPIN948 is compatible with the Arduino UNO R3 connector and most STM32 Nucleo boards.
Figure 1.
EVSPIN948 expansion board
UM3206 - Rev 1 - July 2023
www.st.com
For further information contact your local STMicroelectronics sales office.
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Summary of Contents for ST EVSPIN948
- Page 1 STSPIN948 Introduction The EVSPIN948 dual brushed DC motor driver expansion board is based on the STSPIN948. It provides an affordable and easy-to-use solution for the implementation of brushed DC motor driving applications. Thanks to the parallel operation, it can be easily converted to a single brushed DC motor driver with double current capability. In addition to the internal current limiters, the integrated amplifiers allow it to be used in systems with external current control.
- Page 2 UM3206 Safety precautions Safety precautions Warning: Some of the components mounted on the board could reach hazardous temperatures during operation. While using the board, please follow the following precautions: • Do not touch the components or the heatsink. • Do not cover the board. •...
- Page 3 Compatibility with Arduino UNO R3 connector and STM32 Nucleo boards The EVSPIN948 evaluation board is ready to be used in few steps. Follow this procedure to start your evaluation: Check the setting of the jumpers based on your configuration as described in...
- Page 4 UM3206 Hardware description and configuration Hardware description and configuration Figure 2. EVSPIN948 overview The following tables provide the detailed pinout of the Arduino UNO R3 and ST Morpho connectors. Table 1. Arduino UNO R3 connector table Connector Signal Remarks Offset enable (operational amplifier A)
- Page 5 1. All non-listed pins are not connected. Driving mode selection The EVSPIN948 can drive up to 2 DC motors at the same time. The driving mode selection is done setting J5 and J6 jumpers (connected to MODE1 and MODE2 pins of the device) on the top of the boards.
- Page 6 UM3206 Driving mode selection Figure 3. Two bidirectional DC motors UM3206 - Rev 1 page 6/18...
- Page 7 UM3206 Driving mode selection Figure 4. Two unidirectional DC motors – higher current UM3206 - Rev 1 page 7/18...
- Page 8 UM3206 Current limiter mode Figure 5. One bidirectional DC motor - higher current Current limiter mode The behavior of the current limiter can be changed by setting the J7 jumper (connected to MODE3 of the device) as follows: Table 2. Current limiter mode settings Current limiter mode J2 and J3...
- Page 9 UM3206 Output slew rate Figure 6. versus R Output slew rate The output slew rate can be increased moving the rotative switch SW1 clockwise. With the STSPIN948 device, the slew rate value can be chosen from four different values, as shown in Table Table 3.
- Page 10 UM3206 Thermal performance Thermal performance An example of the thermal performances of the EVSPIN948 is provided in Figure 7 . The board is used in full- bridge and parallel half-bridge configuration in a typical application to drive an inductive load with different output currents ranging from 0.5 A to 3 A.
- Page 11 UM3206 Bills of material Bills of material Table 4. EVSPIN948 bill of material Item Qty. Ref. Description Part/Value Manufact. Order code Connector 5.08 mm close vertical MORSV-508-2P_screw Wurth Elektronic 691312510002 or equivalent Connector 5.08 mm close vertical MORSV-508-4P_screw Wurth Elektronic 691312510004 or equivalent Connector through-hole-pitch 2.54...
- Page 12 UM3206 Bills of material Item Qty. Ref. Description Part/Value Manufact. Order code R43,R48 SMT resistor 3.3 k 1/10 W TP1,TP2,TP3, TP4,TP5,TP6, Test point TP-SMD-S1751-46R Harwin S1751-46R TP7,TP8,TP9, TP10 STSPIN948 STSPIN948 UM3206 - Rev 1 page 12/18...
- Page 13 UM3206 Schematic diagrams Schematic diagrams Figure 9. EVSPIN948 schematic diagram TP 6 TP 7 MODE1 MODE2 MODE3 TP 5 NUCLEO & LOGO 0 - 58V CON3 CON3 CON3 FOR EVALUATION PURPOSE ONLY ROHS COMPLIANT 2002/95/IEC & LOGO 100n 220u 80V...
- Page 14 UM3206 Revision history Table 5. Document revision history Date Version Changes 07-Jul-2023 Initial release. UM3206 - Rev 1 page 14/18...
- Page 15 UM3206 Contents Contents Safety precautions..............2 Getting started .
- Page 16 EVSPIN948 bill of material ........
- Page 17 EVSPIN948 - thermal performances ........
- Page 18 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’...
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