AN4402 datasheet(5/39 Pages) STMICROELECTRONICS

Part #	AN4402

Description	Multichannel drivers driving inductive loads

PDF	39 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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5 / 39 page

DocID025557 Rev 1

5/39

AN4402

Description

This document describes the protection features implemented in the L99MC6 and L9733 to

control inductive loads. It provides calculations of the energy dissipated in the output

MOSFETs of these devices during the switch-off phase of this type of loads in different

configurations:

•

The outputs are configured either as low-side or high-side drivers

•

With and without parallel resistor to the inductive load

Although the examples are applied to the L99MC6, general results are also applicable to

devices integrating the same type of active clamping protections.

Finally, the developers will find a guideline to verify if the outputs of these devices are

compatible with their load specifications and application conditions.

AN4402 Datasheet(PDF) 5 Page - STMicroelectronics