Patent · US Active

Flyback current control

US7548097B2 · kind B2 · utility

5Cited by

4References

20Claims

0Family size

Assignee

TEXAS INSTRUMENTS INCORPORATED · US

Inventors

Luthuli E. Dake · McKinney, US
Bernard Wicht · Munich, DE
Michael Wendt · Günzburg, DE

Key dates

Filing date	Oct 23, 2007
Grant date	Jun 16, 2009
Priority date	—
Expiry date	Nov 15, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/0822
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

One embodiment of the invention includes a power driver system. The power driver system comprises a power transistor that is activated to provide power to a load and a switching circuit configured to control the power transistor based on a control signal. The power driver system further comprises a control circuit configured to detect a flyback current from the load upon deactivation of the power transistor and to cause the switching circuit to steer the flyback current from a first flyback current path to a second flyback current path in response to detecting the flyback current path. The second flyback current path can have an impedance that is greater than the first flyback current path.

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