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Full-bridge converter


A full-bridge converter drive consists of four power switches used to adjust the motor voltage and polarity using pulse width modulation (PWM). The current can thus be controlled to flow in either direction through the motor windings, allowing the motor to run in both directions.

At lower power levels, ST offers a wide set of monolithic motor drivers which, with a progressive choice of integrated features, embed gate drivers, power transistors, protection functions and even DC-DC converters.

For higher powers, ST’s portfolio includes power transistors and high-voltage gate drivers to implement the required H-bridge. A general-purpose 8-bit microcontroller such as the STM8S can be used to implement these control strategies.


Design Support


Technical Documentation

Application Notes

Description Version Size
AN1762: L6205, L6206, L6207 dual full bridge drivers
1.5 1,525 KB
AN1794: PractiSPIN evaluation system configuration and set up guide
2.4 435 KB
AN2044: Operating principals for PractiSPIN™ stepper motor motion control
1.3 52 KB
AN2759: EVAL6227QR demonstration board using a dual full-bridge L6227Q for motor control applications
2.3 262 KB
AN280: Controlling voltage transients in full-bridge driver applications
3.0 386 KB
AN281: Driving DC motors
1.1 81 KB
AN2836: L6225, L6226, L6227 dual full-bridge drivers
1.1 2,651 KB
AN3094: EVAL2293Q demonstration board
1.1 359 KB
AN3097: EVAL6460 demonstration board based on the L6460 SPI configurable stepper and DC multi motor driver
2.3 1,572 KB
AN380: How to drive DC motors with smart power ICs
1.1 144 KB

Publications and Collaterals


Description Version Size
Motor Control Reference Guide
6.0 3,426 KB
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