Regulator for isolated flyback power supply using primary...

Details Regulator for isolated flyback power supply using primary... Regulator for isolated flyback power supply using primary...

2006-08-07

2008-12-09

Riley, Shawn (Department: 2838)

Electric power conversion systems

Current conversion

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

C363S021120

Reexamination Certificate

active

07463497

ABSTRACT:
A regulator for an isolated flyback power supply using primary side sensing. The regulator may include an error circuit configured to generate an error signal representative of the difference between a target value and a measured value, a sample and hold circuit, and a controller circuit. The controller circuit may be configured to cause the sample and hold circuit to sample the value of a derived signal that is derived from a connection to the primary winding at a time when the primary winding is decoupled from the energy-supplying circuit and the diode is conducting current, and to hold the sampled value at least until the diode stops conducting current. The controller circuit may also be configured to cause the held value to be the measured value used by the error circuit.

REFERENCES:
patent: 7310244 (2007-12-01), Yang et al.
“Isolated Flyback Switching Regulator,” Linear Technology LT1425, pp. 1-20.

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