Gate drive circuit for a synchronous rectifier

Details Gate drive circuit for a synchronous rectifier Gate drive circuit for a synchronous rectifier

1991-07-26

1992-06-30

Stephan, Steven L.

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

323224, 323351, 363127, G05F 1656

Patent

active

051266512

ABSTRACT:
A voltage conversion circuit is responsive to a pulse-width modulated control signal for alternately enabling the gates of first and second field effect transistors which converts a high voltage input signal to a low voltage output signal. A first state of the control signal passes the high voltage input signal through the first transistor to charge a filter, while a second state of the control signal blocks the high voltage input signal from the filter. The second state of the control signal also sources current through the second transistor to the filter to rectify the low voltage output signal. The first and second transistors have non-overlapping conduction periods.

REFERENCES:
patent: 4161023 (1979-07-01), Goffeau
patent: 4672303 (1987-06-01), Newton
patent: 4713742 (1987-12-01), Parsley
patent: 4716514 (1987-12-01), Patel
patent: 4737902 (1988-04-01), Nakao et al.
patent: 4801859 (1989-01-01), Dishner
patent: 4974141 (1990-11-01), Severinsky et al.
patent: 5066900 (1991-11-01), Bassett

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