Title :
A 30-MHz isolated push-pull VHF resonant converter
Author :
Wei Cai ; Zhiliang Zhang ; Xiaoyong Ren ; Yan-Fei Liu
Author_Institution :
Aero-Power Sci-tech Center, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
A new isolated push-pull very high frequency (VHF) resonant DC-DC converter is proposed. The primary side of the converter is a push-pull topology derived from the Class EF2 inverter. The secondary side is a class E based low dv/dt full-wave rectifier. A two-channel multi-stage resonant gate driver is applied to provide two complementary drive signals. The advantages of the converter are as follows: 1) the power isolation is achieved; 2) the MOSFETs and diodes are under soft-switching condition for high efficiency; 3) the voltage stress of the MOSFET is much reduced; 4) the parasitic inductance and capacitance can be absorbed. A 30~36 VDC input, 50-W/ 24-VDC output, 30-MHz prototype has been built to verify the functionality.
Keywords :
DC-DC power convertors; MOSFET; driver circuits; rectifiers; resonant power convertors; semiconductor diodes; zero current switching; zero voltage switching; MOSFET; class EF2 inverter; complementary drive signals; diodes; frequency 30 MHz; full-wave rectifier; isolated push-pull VHF resonant converter; parasitic capacitance; parasitic inductance; power 50 W; power isolation; push-pull topology; resonant DC-DC converter; soft-switching condition; two-channel multistage resonant gate driver; very high frequency converter; voltage 24 V; voltage 30 V to 36 V; Impedance; Inverters; Logic gates; MOSFET; Rectifiers; Resonant frequency; Stress; multi-stage resonant gate driver; push-pull; soft-switching; very high frequency (VHF);
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE
Conference_Location :
Fort Worth, TX
DOI :
10.1109/APEC.2014.6803498
