Smart blanking circuit for synchronous rectification in a...

Details Smart blanking circuit for synchronous rectification in a... Smart blanking circuit for synchronous rectification in a...

2011-03-08

2011-03-08

Sterrett, Jeffrey L (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S021060, C363S089000

Reexamination Certificate

active

07903436

ABSTRACT:
In a controller (CC2) for controlling a synchronous rectification switch (S2), the controller (CC2) comprises a sensing circuit (SRL) for sensing an output (D2) of the synchronous rectification switch (S2) at an end of a blanking time to obtain a sense signal (Q), and a control signal generating circuit (AND1) for generating a control signal (G2) for the synchronous rectification switch (S2) in dependence on the sense signal (Q).

REFERENCES:
patent: 6002597 (1999-12-01), Rozman
patent: 7408796 (2008-08-01), Soldano
patent: 2003/0067794 (2003-04-01), Boylan et al.
patent: 2004/0109335 (2004-06-01), Gan et al.
patent: 2005/0122753 (2005-06-01), Soldano
patent: 0736959 (1996-10-01), None
Librizzi, F; et al “STSR3 Simplifies Implementation of Synchronous Rectifier in Flyback Converter” ST AN1624 Application Note. Jan. 1, 2003, pp. 1-22.

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