Title :
Analysis and measurements on a PWM DC-DC converter with lossless snubbers
Author :
Torvetjonn, G.J. ; Petterteig, Astrid ; Undeland, Tore M.
Author_Institution :
Fac. of Electr. Eng. & Comput. Sci., Norwegian Inst. of Technol., Trondheim, Norway
Abstract :
Analysis and measurements are used to demonstrate the advantages and disadvantages of a promising DC-DC power converter topology with lossless snubbers. With the snubbers the total transistor and diode losses are shown to be much less than in hard switching when the load current is large, and equal to or less than in hard switching when the load current is small. Measurements of the insulated-gate bipolar transistor (IGBT) switching performance in the DC-DC converter are presented. The design of a converter transformer with an integrated inductor is also presented. Also examined is the optimum gate resistance with respect to the performance when the snubber capacitors are not fully discharged at turn-on of the transistors
Keywords :
insulated gate bipolar transistors; overcurrent protection; power convertors; power transistors; pulse width modulation; switching circuits; DC-DC power converter topology; IGBT; PWM; design; diode losses; insulated-gate bipolar transistor; integrated inductor; load current; lossless snubbers; optimum gate resistance; snubber capacitors; switching performance; transistor losses; turn-on; DC-DC power converters; Diodes; Insulated gate bipolar transistors; Loss measurement; Power measurement; Power transformer insulation; Pulse width modulation; Pulse width modulation converters; Snubbers; Topology;
Conference_Titel :
Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-1462-X
DOI :
10.1109/IAS.1993.299029
