A new resonant gate drive circuit with centre-tapped transformer

Author

Xu, Kai ; Liu, Yan-Fei ; Sen, P.C.

Author_Institution

Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, Ont.

fYear

2005

fDate

6-6 Nov. 2005

Abstract

This paper presents a new resonant gate drive circuit for a pair of low side switches with 50% duty cycle or less, which is suitable for variable frequency resonant converter, push-pull converter and so on. A centre-tapped transformer is utilized to boost switches´ gate voltage twice high as Vcc voltage. Charging and discharging the gate input capacitance by a constant current source increases MOSFETs switching transition speed. The theoretical analysis and simulation waveforms are provided. A prototype board working at 1 MHz is built and experimental results are also given

Keywords

constant current sources; field effect transistor switches; resonant power convertors; transformers; MOSFET switching transition; capacitance; centre-tapped transformer; charging-discharging; constant current source; duty cycle; low side switch; push-pull converter; resonant gate drive circuit; variable frequency resonant converter; Analytical models; Capacitance; Frequency conversion; MOSFETs; RLC circuits; Resonance; Resonant frequency; Switches; Switching circuits; Switching converters;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 2005. IECON 2005. 31st Annual Conference of IEEE

Conference_Location

Raleigh, NC

Print_ISBN

0-7803-9252-3

Type

conf

DOI

10.1109/IECON.2005.1568979

Filename

1568979