Patent · US Expired

Power MOSFET with current-monitoring

US5029322A · kind A · utility

6Cited by

0References

4Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Josef Einzinger · Spalt, DE
Ludwig Leipold · Munich, DE
Jenoe Tihanyi · Tauberbischofsheim, DE
Roland Weber · Munich, DE

Key dates

Filing date	Nov 10, 1987
Grant date	Jul 2, 1991
Priority date	—
Expiry date	Nov 10, 2007

Classification

Technology area (CPC H)Electricity
CPC primaryH01L2924/0002
WIPO fieldSemiconductors
WIPO sectorElectrical engineering

Abstract

A power MOSFET composed of a plurality of individual MOSFETs connected in parallel, wherein an additional sensing MOSFET monitors the current in the power MOSFET. The sensing MOSFET has a surface comparatively smaller than the power MOSFET and is connected in parallel with the power MOSFET with a resistor between the source of the power MOSFET and the source of the sensing MOSFET. The sensing MOSFET and resistor are integrated with an integrated circuit provided for the control of the power MOSFET.

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