Patent · US Active

Drain-to-source monitoring of power switches in a half-bridge during runtime

US11716028B2 · kind B2 · utility

0Cited by

0References

22Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Markus Zannoth · Munich, DE
Cristian Murtaza · Bucharest, RO
Peter Stemplinger · Madrid, ES

Key dates

Filing date	Sep 20, 2021
Grant date	Aug 1, 2023
Priority date	—
Expiry date	Jan 18, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH02M7/53871
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A driver circuit controls a half-bridge that includes a high-side power switch and a low-side power switch. The driver circuit may comprise a high-side compare unit configured to determine a first drain-to-source voltage, wherein the first drain-to-source voltage is associated with the high-side power switch when the high-side power switch is ON, and a low-side compare unit configured to determine a second drain-to-source voltage, wherein the second drain-to-source voltage is associated with the low-side power switch when the low-side power switch is ON. The high-side compare unit may be further configured to determine a third drain-to-source voltage, wherein the third drain-to-source voltage is associated with the high-side power switch when the high-side power switch is OFF, and the low-side compare unit may be further configured to determine a fourth drain-to-source voltage, wherein the fourth drain-to-source voltage is associated with the low-side power switch when the low-side power switch is OFF.

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