US Patent 7420827 Self oscillating inrush current limiting converter

There is disclosed a power converter having limited inrush current and an inrush current limiter circuit. The inrush limiting circuit may be a self-oscillating switching-mode average current regulator tp provide a relatively constant average charging current to a bulk capacitor until the bulk capacitor is fully charged. A bypass switch may be used to route current around the inrush current limiter circuit once the bulk capacitor is fully charged.