September 2008

Rev 1

1/24

UM0580

User manual

100 W 3 phase inverter featuring L6390 and STD5NK52ZD

for vector control STEVAL-IHM021V1

Introduction

The 100 W 3-phase inverter featuring the L6390 and STD5NK52ZD for field-oriented control

(FOC) of permanent magnet synchronous motors (PMSM) demonstration board (also

referred to by its order code STEVAL-IHM021V1) is a 3-phase inverter designed to perform

the FOC of sinusoidal-shaped back-EMF PMSM - with or without sensors - with nominal

power up to 100 W.

The device’s flexible, open and high-performance design consists of a 3-phase inverter

bridge based on the STD5NK52ZD-1 power MOSFET in IPAK package and L6390 device,

the latest high-voltage half-bridge gate driver family featuring an integrated comparator for

hardware protection implementation (for example, against over-current, over-temperature,

etc) and an embedded operational amplifier suitable for advanced current sensing. The

system has been specifically designed to achieve accurate and fast conditioning of the

current feedback, thereby matching the requirements typical of high-end applications such

as field oriented motor control.

The board is compatible with 110 and 230 Vac mains and includes a power supply stage

with VIPer12AS-E (in buck configuration) to generate the +15 V and +3.3 V supply voltage

required by the application. Finally, the board can be interfaced with the STM3210B-EVAL

(STM32 microcontroller demonstration board) through a dedicated connector.

Figure 1.

STEVAL-IHM021V1 demonstration board

AM01257v1

www.st.com