Patent ID: 7400061

Claim:
A multiple output DC-to-DC converter including a transformer with primary and secondary windings wherein said transformer includes inherent inductances in series therewith, said converter comprising: an inverter having a plurality of controllable switching devices and adapted to be connected in parallel across a DC supply, each of said controllable switching devices including an inherent diode portion in inverse parallel therewith, each of said controllable switching devices further including an inherent capacitance in parallel therewith; a first junction between a first pair of said controllable switching devices; a second junction between a second pair of said controllable switching devices; the primary winding of said transformer being connected between said first and second junctions; said transformer including a first secondary winding inductively coupled to said primary winding, said first secondary winding connected to a rectifying circuit supplying a first controllable DC voltage to a first load; a first control means adapted to turn said first pair and said second pair of said controllable switching devices on and off at times which result in a transfer of energy between said inherent inductances and said inherent capacitances; said transformer including a second secondary winding that is center-tapped and inductively coupled to said primary winding; the center tap of said second secondary winding forming a reference potential for an auxiliary output voltage and a first end of said second secondary transformer winding connected to the anode side of a first diode and a second end of said second secondary transformer winding connected to the anode side of a second diode; the cathode end of said first diode connecting to a first controllable switching device, the cathode end of said second diode connected to a second controllable switching device, the other ends of said first and second switching devices forming a junction at which a second controllable DC output voltage is supplied to a second load; a second control means adapted to turn on and off said first and second controllable switching devices at times that result in the regulation of said second controllable DC output voltage.