Patent ID: 6362984
Filing Date: 2002-03-26
Classification: H02M

Abstract:
A DC-DC converter for converting DC power from a DC power supply into an arbitrary DC output via a transformer, with the DC-DC converter being characterized in that:said DC power source, a first capacitor, a primary coil of the transformer, a first semiconductor switching device, and a current-limiting resistor are connected together in series; a parallel circuit of a second semiconductor switching device and a second capacitor is connected between said first capacitor and said primary coil of said transformer in parallel; first and second transformer driving coils are each connected between a gate and a source of said first or second semiconductor switching device, respectively, via a resistor; an activation circuit and a transistor are connected between the gate and source of the first semiconductor switching device; a base of said transistor is connected to a connection between the first semiconductor switching device and said current-limiting resistor via a base resistor; a diode and a filter capacitor are connected to a secondary coil of said transformer; and a DC output is connected to the base of the transistor via an output-voltage detection and control circuit.