Low noise, high frequency synchronous rectifier

Details Low noise, high frequency synchronous rectifier Low noise, high frequency synchronous rectifier

1988-04-27

1990-02-20

Salce, Patrick R.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

357234, H02M 7217

Patent

active

049031899

ABSTRACT:
A synchronous rectifier is able to operate at higher frequencies and provides an output having lower noise than prior art FET synchronous rectifier system by using field effect switching devices which contain only one conductivity type of semiconductor material and connecting a high speed, low charge storage diode in parallel. Schottky diodes are preferred whereby there is no junction diode in the structure. Conventional FETs may be used when paralleled with a Schottky diode which prevents the FET's parasitic internal diode from becoming conductive.

REFERENCES:
patent: 2980809 (1961-04-01), Teszner
patent: 3363153 (1968-01-01), Zloczower
patent: 3855608 (1974-12-01), George et al.
patent: 3909700 (1975-09-01), Ferro
patent: 4115793 (1978-09-01), Nishizawa
patent: 4399499 (1983-08-01), Butcher et al.
patent: 4404575 (1983-09-01), Nishizawa
patent: 4519024 (1985-05-01), Federico et al.
patent: 4546375 (1985-10-01), Blackstone et al.
patent: 4685041 (1987-08-01), Bowman et al.
patent: 4791462 (1988-12-01), Blanchard et al.

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