Load-side snubbers for recovering leakage energy

Snubbers are circuits that rectify the parasitic energy trapped in circuit leakage inductances, and recycle this energy to a power node. Most published snubber circuits deliver this energy back to the input source. Since the purpose of a power converter is to deliver energy to the load, it makes sense that the snubber should couple this energy to the load, instead of to the source. This paper demonstrates snubber circuits that operate from the secondary (load-side), and decouple their energy to the load. Simulations and test measurements show that this methodology does work, and that conversion efficiency increases when these techniques are used.