Control circuit with tracking turn on/off delay for a...

Details Control circuit with tracking turn on/off delay for a... Control circuit with tracking turn on/off delay for a...

2006-09-26

2006-09-26

Patel, Rajniaknt B. (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S089000, C323S222000

Reexamination Certificate

active

07113413

ABSTRACT:
In a converter-controller the controller includes a primary power device coupled to a primary coil and a resonant reset capacitor in parallel with the primary power device. The controller can switch the primary power device with a variable frequency. The resonant capacitor and the primary coil have a primary resonant cycle. The controller can turn on/off the primary power device for half of the primary resonant cycle. The controller includes a first secondary power device, having a first voltage and a second secondary power device, having a second voltage, each voltages having a rising threshold-point and a falling threshold-point. The first and second secondary power devices are coupled to the control logic and to corresponding terminals of the secondary coil. The controller can synchronize the rising threshold-point of the first voltage with the falling threshold-point of the second voltage or vice versa.

REFERENCES:
patent: 5402329 (1995-03-01), Wittenbreder, Jr.
patent: 5757627 (1998-05-01), Faulk
patent: 6069804 (2000-05-01), Ingman et al.
patent: 6545883 (2003-04-01), Xing et al.
patent: 6671189 (2003-12-01), Jansen et al.
patent: 6961253 (2005-11-01), Cohen

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