DocumentCode :
3253853
Title :
Effects of Internal Feedback and Gate-Drive Signal on the Turn-off Loss of MOSFET ZVS
Author :
Kulvitit, Youthana ; Opanuruk, Puckapon ; Tansatit, Tanvaa
Author_Institution :
Chulalongkorn Univ., Bangkok
fYear :
2007
fDate :
27-30 Nov. 2007
Firstpage :
105
Lastpage :
112
Abstract :
This paper studies the effects of internal feedback through device´s parasitic capacitances and inductances associated with gate-drive signal on the turn-off loss of MOSFET operates as zero-voltage switch in Class-D resonant inverter. Expressions relating parameters of Miller feedback and gate-drive circuit to Miller voltage were derived. Impeding turn-off and re-turn-on of conduction channel are responsible for higher turn-off loss. Switching trajectory, energy transferred into the MOSFET in each switching cycle, as well as turn-off loss for different gate- drive signal were calculated using data obtained from computer simulations. The results are compared with those calculated from experimental data. Voltage dependent parasitic capacitances of the MOSFET were estimated from experimental data and used for the calculation channel current.
Keywords :
circuit feedback; field effect transistor switches; resonant invertors; zero current switching; zero voltage switching; MOSFET ZVS; Miller voltage; channel current calculation; class-D resonant inverter; gate-drive signal; internal feedback; turn-off loss; zero-voltage switch; Computer simulation; Feedback circuits; Impedance; MOSFET circuits; Negative feedback; Parasitic capacitance; Resonant inverters; Shape control; Switches; Zero voltage switching; Channel current; Miller feedback; gate-drive signal; impeding turn-off; re-turn-on; turn-off loss;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Drive Systems, 2007. PEDS '07. 7th International Conference on
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0645-6
Electronic_ISBN :
978-1-4244-0645-6
Type :
conf
DOI :
10.1109/PEDS.2007.4487686
Filename :
4487686
Link To Document :
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