Patent · US Active

Differential techniques for measuring voltage over a power switch

US11569798B2 · kind B2 · utility

3Cited by

6References

22Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Michael Krug · Munich, DE
Matthias Weinmann · Balingen, DE
Marco Bachhuber · Dundenheim, DE

Key dates

Filing date	Jun 23, 2021
Grant date	Jan 31, 2023
Priority date	—
Expiry date	Jun 23, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/6874
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A driver circuit is configured to deliver drive signals from an output pin to a power switch to control ON/OFF switching of the power switch. A first detection pin of the driver circuit is configured to receive a first signal associated with the power switch, wherein the first signal indicates a voltage drop over the power switch and a voltage drop over one or more other circuit elements. A second detection pin is configured to receive a second signal, wherein the second signal indicates a voltage drop over one or more matched circuit elements, wherein the one or more matched circuit elements associated with the second signal are substantially identical to the one or more other circuit elements associated with the first signal. The driver circuit is configured to determine the voltage drop over the power switch based on a difference between the first signal and the second signal.

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