دانلود رایگان مقاله Nonisolated Flyback Switching Capacitor Voltage Regulator

دانلود رایگان مقاله Nonisolated Flyback Switching Capacitor Voltage Regulator

 

AUGUST 2013

 

IEEE TRANSACTIONS ON POWER ELECTRONICS

 

Nonisolated Flyback Switching Capacitor Voltage Regulator

Abstract

This paper proposes a novel nonisolated flyback switching capacitor voltage regulator. The converter is a combination of a switching capacitor converter and a pulsewidth modulation voltage regulator, and it has the following advantages: 1) the switches achieve zero voltage switching (ZVS); 2) the self-driven method of the synchronous rectifier (SR) is applied to save the drive loss and the body diode conduction loss; 3) the transformer leakage inductor is utilized to realize the soft switching of the switches; and 4) single-phase option makes it more flexible. Its derivation, operation principle, and self-driven method are presented. A singlephase 700 kHz 1.2 V/35 A output point-of-load prototype was built to verify the analysis.

Index Terms—Pulsewidth modulation (PWM) converter, selfdriven, switching capacitor converter, zero voltage switching (ZVS).

 

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