April 2008
Rev 1
1/39
UM0522
User manual
100 W 3-phase inverter for BLDC sensorless motor
evaluation board
Introduction
The 100 W 3-phase inverter for the BLDC sensorless motor evalaluation board (for brevity
also referred with its order code STEVAL-IHM017V1) is a complete development platform
for BLDC sensorless motor application with nominal power up to 100 W. It is based on a
cost-effective, flexible and open design, including a three-phase inverter bridge based on
the STD5NK52ZD-1 Power MOSFET in IPAK package and an ST7MC 8-bit microcontroller
with 16 Kbyte internal Flash memory.
The system has been designed to drive a three-phase brushless motor with permanent
magnet rotor exploiting trapezoidal sensorless control.
The STEVAL-IHM017V1 features complete hardware for developing motor control
applications based on ST7MC peripherals including motor control peripheral (MTC). The
STEVAL-IHM017V1 uses an in-circuit communication (ICC) standard interface to connect to
the host PC via In-circuit debuggers/programmers such as the inDART-STX board from
Softec. The board is designed to support 230 Vac of bus voltage up to 100 W of input power.
It also includes a power supply stage with VIPer12A-E as the buck converter to generate
voltage reference for the driver and the microcontroller.
Figure 1.
STEVAL-IHM017V1 evaluation board
www.BDTIC.com/ST
