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US 2006/0132105 A1Published application
Controlling inrush current
OwnerAtluri Prasad, Hai Nguyeninventors
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OwnerAtluri Prasad, Hai Nguyeninventors
Estimating the term…
A control circuit and method for controlling a power factor correction circuit comprising: an inductor having an input terminal to receive an input voltage and an output terminal series connected to an anode of a diode; a first capacitor connected between a cathode of said diode and ground; a first switch connected between an anode of said diode and ground; a series arrangement of a second capacitor and a parallel arrangement of a resistor and a second switch series connected with said second capacitor. The control circuit is operable to generate synchronous first and second switch control signals to respectively control said first and second switches, wherein during inrush current conditions when said input voltage drops-in after an interruption, said control circuit is operable to cause said first and second switches to be synchronously switched at increasing duty cycles. The method comprises charging a first capacitor from an input voltage source; isolating the first capacitor from the input voltage source; transferring a portion of charge stored in said first capacitor to a second capacitor while said input voltage source is isolated from said first capacitor and from said second capacitor; and repeatedly said charging, isolating, and transferring until a voltage is formed on said second capacitor that is approximately equal to said input voltage source.
A power factor correction circuit comprising:
A power supply circuit for receiving an AC input voltage and for generating a DC output voltage, comprising:
A system comprising:
A method for controlling inrush current in a power supply, comprising:
Dependencies are inferred from the claim text.