AN2316 - Application Note

STEVAL-IHM006V1 Circuit Description

5/24

The circuit is based on the following parts (see

Figure 1):

●

IGBT Z1

Together with diodes D1, D2, D5, and D6, it performs current freewheeling (only for

inductive load).

●

IGBT Z2

Together with diodes D3, D4, D7, and D8, it is the main switch through which the load is

energized.

●

Pulse Transformer T1

It allows the signal derived from the PWM generator to be transferred to the Z1 gate.

This component electrically insulates the input from the output’s entry signal and phase

inversion.

●

PWM generator

This is provided by the ST7Lite05 microcontroller.