This paper presents a new single-switch flyback converter with passive leakage recovery snubber comprising of three diodes, a clamp capacitor, and a small transformer, rated only 5% of the main transformer. The passive snubber enables recovery and direct transfer of main transformer leakage energy to output and soft-transition of active switch over wide load range from full load to 20% load. The power diodes turn on and commutate softly. Complete elimination of semiconductor switching loss enabled high frequency and high efficiency converter operation. Steady state operation, brief design guidelines and detailed performance analysis in terms device stress, soft-switching range, loss estimation, and comparison analysis of proposed topology with recently published other converters are presented in this work. Finally, experimental validation is done through laboratory testing on a 22V-26V input, 72V/120W output prototype converter operating at 100 kHz switching frequency. The experimental observations clearly endorsed the theoretical predictions.