Class D current-driven transformer center-tapped controllable synchronous rectifier

Author

Kazimierczuk, Marian K. ; Mescher, Mark J. ; Prenger, Roger M.

Author_Institution

Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA

Volume

43

Issue

8

fYear

1996

fDate

8/1/1996 12:00:00 AM

Firstpage

670

Lastpage

680

Abstract

We present analysis and experimental results for a phase-controlled, synchronous, transformer center-tapped rectifier. The rectifier is driven by a resonant inverter. A digital control adjusts the phase in the driver of the rectifier MOSFET´s. The output voltage is regulated while maintaining a 94% maximum and a 80% minimum efficiency for a 30% line swing, and 50% efficiency for a load swing of 400% from full power. Experimental results are presented for a 10 W rectifier with an output voltage of 3.3 V. Theoretical calculations agreed well with the experimental results, with certain deviations due to the nonidealities of the transformer. The center-tapped topology allows for high efficiency even at 3.3 V and simplifies the control design, providing simple regulation

Keywords

phase control; power MOSFET; rectifying circuits; 10 W; 3.3 V; 50 percent; 80 to 94 percent; Class D current-driven transformer center-tapped synchronous rectifier; digital control; driver; efficiency; nonideality; phase-controlled MOSFET; regulation; resonant inverter; Circuit topology; Control design; Digital control; Diodes; Helium; MOSFETs; Power supplies; Rectifiers; Resonant inverters; Voltage control;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.526682

Filename

526682