2.65 MHz high efficiency soft-switching power amplifier system

Author

Qian, Jinrong ; Bruning, Gert

Author_Institution

Philips Res., Briarcliff Manor, NY, USA

Volume

1

fYear

1999

fDate

36373

Firstpage

370

Abstract

Power converters operating at megahertz frequency potentially offer high power density and miniaturization. Their exploitation has been hindered by high switching losses not only in the power stage but also in the gate driver. Gate drivers with square-wave and sinusoidal-wave shapes are analyzed and a new high efficiency soft-switching gate driver with gate capacitive energy recovery is proposed and implemented. The conditions to achieve zero-voltage-switching (ZVS) operation and design considerations for a 2.65 MHz power converter are also presented. It is shown that the 2.65 MHz, 100 W power converter has 92.6% overall efficiency

Keywords

DC-DC power convertors; driver circuits; power MOSFET; power amplifiers; power semiconductor switches; switching circuits; 100 W; 2.56 MHz; 92.6 percent; DC/DC power conversion; Power converters; ZVS; design considerations; gate capacitive energy recovery; gate driver; high efficiency soft-switching power amplifier system; miniaturization; power density; power stage; switching losses; zero-voltage-switching; Frequency conversion; High power amplifiers; MOSFETs; Packaging; Parasitic capacitance; Resonance; Switches; Switching loss; Threshold voltage; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE

Conference_Location

Charleston, SC

ISSN

0275-9306

Print_ISBN

0-7803-5421-4

Type

conf

DOI

10.1109/PESC.1999.789030

Filename

789030