Synchronous rectifying circuit

Details Synchronous rectifying circuit Synchronous rectifying circuit

1993-08-20

1995-05-30

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

327108, 327387, H03K 1716, H03K 17687

Patent

active

054205328

ABSTRACT:
A method of efficiently turning off inductive loads includes turning off a driving switch, monitoring a circuit output during turn-off, and activating a control circuit in response to an inductive flyback voltage at the output which turns on a recirculation switch and recirculates residual load current and clamps the output thereby substantially decreasing power dissipation during inductive load turn-off.

REFERENCES:
patent: 3168651 (1965-02-01), Szarvas
patent: 4841166 (1989-06-01), Harnden
patent: 5028811 (1991-07-01), Le Roux et al.
patent: 5126589 (1992-06-01), Renger
patent: 5276357 (1994-01-01), Cripe

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