Soft-transition controller of a synchronous converter

Details Soft-transition controller of a synchronous converter Soft-transition controller of a synchronous converter

2006-02-17

2008-10-07

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

C323S282000

Reexamination Certificate

active

07432688

ABSTRACT:
The present invention provides a soft-transition controller for use with a synchronous converter having primary and secondary rectifiers. In one embodiment, the soft-transition controller includes a primary driver configured to provide a primary drive signal to the primary rectifier operating in a synchronous mode, while the secondary rectifier is operating in a diode mode, to provide an output voltage of the synchronous rectifier. Additionally, the soft-transition controller also includes a complementary driver coupled to the primary driver and configured to provide a soft-transition drive signal during a transition period, which transfers the secondary rectifier from the diode mode to a synchronous mode while maintaining the output voltage within a predetermined voltage range.

REFERENCES:
patent: 4520437 (1985-05-01), Boettcher et al.
patent: 6760235 (2004-07-01), Lin et al.
patent: 2004/0189269 (2004-09-01), Lynch

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