Microcontroller drives H bridge to power a permanent-magnet dc motor

by Luca Bruno, ITIS Hensemberger Monza, Lissone, Italy; Edited by Brad Thompson and Charles H Small, EDN, Mar 15 2007

Focus:
For driving low- to medium-power permanent-magnet dc motors, an alternative to the conventional H-Bridge driver operates with only two low-side control signals. By not requiring the usual two high-side control signals, this circuit avoids the need for isolation and level shifting circuits.

What you’ll learn:

• How to build an H-bridge driver that requires only two low-side control signals

Notes:
An EDN Design Idea

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