Apparatus providing protection for power converter

Details Apparatus providing protection for power converter Apparatus providing protection for power converter

2009-08-30

2010-12-07

Nguyen, Matthew V (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

07847533

ABSTRACT:
A switching circuit for a power converter includes an oscillation circuit, a first circuit, and a first comparator. The oscillation circuit generates a switching signal for regulating an output of the power converter. The first circuit generates a threshold signal. The first comparator is coupled to receive a signal representative of a current through a power switch. Besides, the first comparator generates a control signal in response to the signal and the threshold signal. A frequency of the switching signal is increased in response to the enabling of the control signal.

REFERENCES:
patent: 4736267 (1988-04-01), Karlmann et al.
patent: 7298117 (2007-11-01), Hasegawa et al.
patent: 7378826 (2008-05-01), Liao

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