Title :
2.65 MHz high efficiency soft-switching power amplifier system
Author :
Qian, Jinrong ; Bruning, Gert
Author_Institution :
Philips Res., Briarcliff Manor, NY, USA
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;
Conference_Titel :
Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
0-7803-5421-4
DOI :
10.1109/PESC.1999.789030
