The development and testing of the bi-polar synchronous rectifier (BPSR)

Author

Wheeler, J. ; Mortimer, B.J.P. ; De Vries, I.

Author_Institution

Dept. of Electr. Eng., Cape Technikon, Cape Town, South Africa

Volume

2

fYear

2002

fDate

2-4 Oct. 2002

Firstpage

715

Abstract

This paper discusses the operation of the bi-polar synchronous rectifier (BPSR) a special purpose low frequency amplifier topology. Energy conversion through an output transformer is done at a frequency much higher than the desired operating waveform frequency. An active rectifier demodulates the switched waveform passing only the desired low frequency waveform to the load. This feature can lead to substantial size and weight reduction in the amplifier as transformer magnetic volume decreases with increasing frequency. The technology allows full low frequency Class-D amplifiers to be realized with comparable efficiencies, but with much higher power densities.

Keywords

amplifiers; demodulation; rectifying circuits; transformers; active rectifier; amplifier; bi-polar synchronous rectifier; energy conversion; low frequency Class-D amplifiers; low frequency amplifier topology; low frequency waveform; output transformer; power densities; switched waveform demodulation; testing; transformer magnetic volume; weight reduction; Equivalent circuits; Frequency conversion; Inverters; MOSFETs; Operational amplifiers; Rectifiers; Switches; Testing; Topology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Africon Conference in Africa, 2002. IEEE AFRICON. 6th

Print_ISBN

0-7803-7570-X

Type

conf

DOI

10.1109/AFRCON.2002.1160001

Filename

1160001