ST IHM031V1 User Manual

STEVAL-IHM031V1

3-phase low voltage inverter power board for FOC and scalar motor control based on the STS8DNH3LL MOSFET

Features

■Bus voltage: 12 V - 24 V, up to 120 W

■3-phase full bridge inverter topology

■Compact size with dual N-channel power MOSFETs

■Easily configurable for scalar and FOC motor control

■Motor current feedback via three shunt resistors

■Security functions:

–overcurrent detection

–bus voltage monitoring

–temperature sensing

■RoHS compliant

Data brief

STEVAL-IHM031V1

Description

The STEVAL-IHM031V1 demonstration board is designed to drive a low voltage/low-to-medium current, 3-phase brushless, synchronous or asynchronous motor. It provides a compact solution along with efficient power dissipation thanks to dual in-package power MOSFETs.

This demonstration board integrates the following functional blocks: dedicated power supply for handling bus voltage in the range of 12 V to 24 V (up to 5 A), integrated gate driving, overcurrent protection, overvoltage and overtemperature sensing, three-shunt current sensing for FOC control, single-shunt sensing for trapezoidal control, BEMF sensing and amplification (for both GE and STMicroelectronics methods) and motor control connector.

The on-board MC connector allows the demonstration board to be interfaced with any STMicroelectronics MCU control board with a dedicated connector in order to control several types of 3-phase motors (asynchronous, PMSM brushless DC and brushless AC).

January 2010	Doc ID 16977 Rev 1	1/6
For further information contact your local STMicroelectronics sales office.		www.st.com

Schematic diagrams	STEVAL-IHM031V1

1 Schematic diagrams

Figure 1. BEMF and sensor inputs

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Figure 2. Current conditioning

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2/6	Doc ID 16977 Rev 1