Patent · US Active

Drive circuit having a transformer for a semiconductor switching element

US7560833B2 · kind B2 · utility

6Cited by

7References

20Claims

0Family size

Assignee

Infineon Technologies Austria AG · AT

Inventors

Bernhard Strzalkowski · Munich, DE
Anton Mauder · Kolbermoor, DE

Key dates

Filing date	Sep 29, 2006
Grant date	Jul 14, 2009
Priority date	—
Expiry date	Apr 23, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH03K2217/0036
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A drive circuit for a semiconductor switching element includes a transformer, first and second driver circuits, and a rectifier element. The drive circuit produces a drive signal based on an input signal. The transformer has a primary winding and a secondary winding, and is integrated in a first semiconductor body. The first driver circuit is coupled to receive the input signal, and has at least one output which is coupled to the primary winding of the transformer. The first driver circuit also includes a first supply input connected to receive a first supply potential. The second driver circuit is operable to provide the drive signal and has at least one input coupled to the secondary winding. The second driver circuit has a second supply input. The rectifier element is connected between the first and the second supply input, and is integrated in the first semiconductor body.

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