Title :
A novel lossless snubber circuit
Author :
Varga, Li Dj ; Losic, N.A.
Author_Institution :
Inst. Mihajlo Pupin, Beograd, Yugoslavia
Abstract :
A simple lossless snubber circuit for use with a switch mode power converter is presented. The circuit uses a capacitor connected between the primary and tertiary windings of a transformer in such a way as to relieve the stress from the power semiconductor switch at both turn-on and turn-off. The energy stored in the leakage inductance of the transformer is recovered via the capacitor and the tertiary winding/diode connection back to the input source. Therefore, both the efficiency of the system and transient working conditions of the switch are improved. An additional diode appropriately connected in the tertiary winding further improves the circuit performance
Keywords :
overcurrent protection; power convertors; capacitor; circuit performance; efficiency; leakage inductance; lossless snubber circuit; overcurrent protection; power semiconductor switch; switch mode power converter; transformer winding; turn-off; turn-on; Circuit optimization; Employee welfare; Inductance; Power semiconductor switches; Semiconductor diodes; Snubbers; Stress; Switched capacitor circuits; Switching circuits; Switching converters;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1989. APEC' 89. Conference Proceedings 1989., Fourth Annual IEEE
Conference_Location :
Baltimore, MD
DOI :
10.1109/APEC.1989.36950
