November 2011

Doc ID 022479 Rev 1

1/25

UM1491

User manual

100 W 3-phase inverter demonstration board using the

L6390 and STD5N52U for vector control

Introduction

The 100 W 3-phase inverter demonstration board features the L6390 and STD5N52U for

field-oriented control (FOC) of permanent magnet synchronous motors (PMSM). Also

referred to by order code STEVAL-IHM021V2, this 3-phase inverter is designed to perform

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

power up to 100 W. The flexible, open, high-performance design consists of a 3-phase

inverter bridge based on:

recovery diode

featuring an integrated comparator for implementation of hardware protection (i.e.

overcurrent, overtemperature, etc.)

The system is specifically designed to achieve fast and accurate conditioning of the current

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

oriented motor control. As an alternative to the STD5N52U, the STGD6NC60HD or

STGDL6NC60DI IGBT devices may be used on the board without replacing the switch

driving network.

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

with the VIPer12A-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-IHM021V2 demonstration board

www.st.com