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October 2008 Rev 2 1/53
UM0432
User manual
Low voltage motor control demonstration board
based on ST7MC MCU
Introduction
The low-voltage motor control demonstration board (also referred to by its order code
STEVAL-IHM015V1) is a complete development platform for low-voltage motor control
applications. Based on a cost-effective, flexible and open design, it allows easy
demonstration of ST7MC capabilities to drive low-voltage synchronous motors. It includes
an ST7MC 8-bit microcontroller with a 16-Kbyte internal Flash memory. The STEVAL-
IHM015V1 comes with all the hardware necessary for developing motor control applications
based on ST7MC peripherals including a motor control peripheral (MTC) and serial
communication interface (SCI). The STEVAL-IHM015V1 uses an in-circuit communication
(ICC) standard interface to connect to the host PC via in-circuit debuggers/programmers
such as the in DART-STX board from Softec. The board’s power stage is designed to
support up to 25 A and up to 48 V. With the included power MOSFET device STS8DNH3LL
in SO-8 package, the maximum input voltage is 30 V and the maximum current rating is 8 A.
The power supply stage can be easily configured to accept a wide range of input voltages.
Figure 1. STEVAL-IHM015V1
Features
■ Voltage range from 5 to 48 V
■ Maximum current up to 25 A
■ Power MOSFET STS8DNH3LL (dual n-channel) 8 A/30 V included
■ Compatible with power MOSFET in SO-8 and DPAK packages
■ 10 V auxiliary power supply connector
■ Serial communication interface connector
■ Programming and debug support via a 10-pin ICC connector
■ On-board 2 K-bit (256 bytes) serial memory
■ Four potentiometers for runtime settings
■ Start/stop button
■ Reset button
■ Debug pins available
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