Circuit makes simple high-voltage inverter

by Francesc Casanellas, Aiguafreda, Spain; edited by Bill Travis, EDN, May 27 2004

Focus:
A simple 370-W, three-phase inverter circuit uses a low voltage bipolar transistor to drive a high-side MOSFET. In addition to its simplicity, this inverter design features faster turn on and turn off than inverters using optocoupler drive, which minimizes dead-time concerns. This inverter has been used in three-phase motor drives up to 750 W.

What you’ll learn:

• How to build a simple three-phase inverter for 370-W to 750-W motor drives

Notes:
An EDN Design Idea

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