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December 2012

Doc ID 024098 Rev 1

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STEVAL-IHM040V1

BLDC/PMSM driver demonstration board based on STM32 and the

SLLIMM™ nano

Data brief

Features

VAC nominal at 50/60 Hz, or DC input voltage

between 150 and 350 VDC

implemented using the STGIPN3H60 SLLIMM-

nano intelligent power module

Description

The STEVAL-IHM040V1 is a 3-phase permanent

magnet brushless motor driver designed to drive

a motor using either the six step or field oriented

control (FOC) commutation technique. The board

can operate from an AC mains of either 115 or

voltage between 150 and 350 VDC. The board

can supply a continuous output current of 0.5

The circuit consists of three main blocks. The first

is the digital control block, which uses the

STM32F100C8T6 microcontroller to implement

the control algorithms and to generate the control

signals for the power stage. The main outputs of

the control block are the signals for the power

stage.

The second block is the power stage, a 3-phase

inverter bridge implemented using the

STGIPN3H60 SLLIMM-nano intelligent power

module. The SLLIMM includes the 6 IGBTs, gate

drivers and level shift required to interface the

logic signals from the digital control to the motor

terminals. The SLLIMM also provides a hardware

overcurrent shutdown and an op-amp used to

scale and bias the current sensing.

The third block is the power supply, which

employs the VIPER16 to convert the high voltage

DC bus to a regulated 15 V supply that supplies

the SLLIMM and analog circuitry on the board.

The 15 V supply also supplies an L78L33 linear

regulator that provides the 3.3 V logic supply for

the microcontroller.

Two firmware control programs are available, one

for six steps and one for FOC, which run on the

same hardware platform.

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