Non-dissipative snubber circuit for a switched mode power supply

Details Non-dissipative snubber circuit for a switched mode power supply Non-dissipative snubber circuit for a switched mode power supply

1995-05-26

1997-03-25

Wong, Peter S.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

361 91, H02H 7122

Patent

active

056150946

ABSTRACT:
A non-dissipative snubber circuit for a switched mode power supply in which the excess energy generated by the parasitic voltage spike of a freewheeling diode turning off is directed to either the output of the power supply or to ground. A snubber capacitor stores the excess energy and a snubber circuit path is established during on pulses received by the secondary to allow the excess energy stored in snubber capacitor to be directed to the output of the power supply. Alternatively, the snubber circuit path may direct that excess energy to ground.

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