Method and apparatus for driving a power MOS device as a...

Details Method and apparatus for driving a power MOS device as a... Method and apparatus for driving a power MOS device as a...

2007-02-27

2007-02-27

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Parallel controlled paths

C327S494000

Reexamination Certificate

active

10683608

ABSTRACT:
A synchronous rectifier comprising a MOSFET device, and a gate driver for driving the gate of the MOSFET device, the MOSFET device comprising first and second MOSFET transistors coupled with their drain-source paths in parallel to receive an alternating current waveform for rectification by the drain-source paths of the MOSFET transistors, the first transistor having a low Rdson and the second transistor having a high Rdson whereby the apparent Rdson of the MOSFET device is increased when the current through the MOSFET device is below a threshold thereby enabling zero crossing detection.

REFERENCES:
patent: 4417164 (1983-11-01), Edlund
patent: 5506527 (1996-04-01), Rudolph et al.
patent: 6469564 (2002-10-01), Jansen

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