Lossless Snubber Circuits

A switch-mode power supply comprising a plurality of converter cells connected in parallel with respect to a voltage input and a load, each converter cell comprising:

• an input capacitor across the input of the converter cell;
• a snubber circuit comprising an energy storage device and a reverse-biased diode connected in series therewith;
• a transformer in parallel with the snubber circuit;
• the transformer having a load output;
• a switch driven by a gate driver and controlling the current through the transformer;
• and
• a voltage regulator having an input and a regulated output;
• the regulated output of the voltage regulator connects to the voltage rails of a gate driver;
• wherein the input of the voltage regulator for each converter cell connects across the transformer of a prior converter cell;
• and
• wherein the input of the voltage regulator for the last converter cell connects in parallel across the snubber circuit for the last converter cell.