Tapped winding flyback converter for multiple output voltages

A power conversion apparatus comprising:

• a transformer, wherein the transformer has a primary winding and a tapped secondary winding having a first number of turns and a second number of turns, wherein the first number of turns is less than a total number of turns of the secondary winding of the transformer and wherein the second number of turns is larger than the first number of turns of the secondary winding of the transformer;
• a first switch coupled to the primary winding so as to control a flow of current through the primary winding;
• a second switch coupled in series between the secondary winding and ground;
• and
• circuitry coupled to the first switch and the second switch, configured to:
• switch the first switch using a first duty cycle and turn the second switch off, so as to allow current to flow through the first number of turns of the secondary winding of the transformer, thereby outputting a low voltage;
• switch the first switch using the first duty cycle and turn the second switch on, so as to allow current to flow through a second number of turns of the secondary winding of the transformer, thereby outputting an intermediate voltage;
• and
• switch the first switch using a second duty cycle and turn the second switch on, so as to allow current to flow through the second number of turns of the secondary winding of the transformer, thereby outputting a high voltage.