Patent · US Active

Protecting a body diode of a power switch

US11362651B1 · kind B1 · utility

2Cited by

5References

24Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Michael Krug · Munich, DE
Marco Bachhuber · Dundenheim, DE
Tommaso Bacigalupo · San Jose, US
Benedikt Hanelt · Munich, DE
Marcus Nuebling · Olching, DE

Key dates

Filing date	Mar 2, 2021
Grant date	Jun 14, 2022
Priority date	—
Expiry date	Mar 2, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH03K2217/0072
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

This disclosure is directed to circuits and techniques for protecting a body diode of a power switch from an inductive load when the power switch is turned OFF. A driver circuit may detect whether the power switch is in a desaturation mode when the power switch is turned ON and disable the power switch in response to detecting that the power switch is in the desaturation mode. In addition, the driver circuit may detect whether the body diode of the power switch needs protection when the power switch is turned OFF, and in response to detecting that the body diode needs protection, control the power switch according to a body diode protection scheme.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.