Switching power converter with controlled startup mechanism

Details Switching power converter with controlled startup mechanism Switching power converter with controlled startup mechanism

2007-12-26

2010-06-08

Vu, Bao Q (Department: 2838)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

C315S254000, C315S276000, C323S901000, C323S908000

Reexamination Certificate

active

07733030

ABSTRACT:
A switching power converter with a controlled startup mechanism includes a switching stage which provides a voltage Voutat an output node in response to a switching control signal, with the output node adapted for connection to a non-linear load. A feedback network compares a signal which varies with the current conducted by the load (Iload) with a reference signal, and provides the switching control signal so as to maintain Iloadat a desired value. A capacitor connected to the output node provides a current Icto the feedback network which varies with dVout/dt. The feedback network is arranged to limit dVout/dt in response to current Icwhen Iloadis substantially zero. In this way, large inrush currents or damage that might otherwise occur during startup are avoided.

REFERENCES:
patent: 7579784 (2009-08-01), Araki et al.
patent: 2008/0067985 (2008-03-01), Chang et al.
patent: 2008/0224625 (2008-09-01), Greenfeld
patent: 2009/0072754 (2009-03-01), Fukumoto
patent: 2009/0184645 (2009-07-01), Buij et al.
patent: 2009/0189546 (2009-07-01), Chien et al.

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