DocumentCode
3415460
Title
Multiphase 48 volt conversion for low noise applications in an instrument grade power supply
Author
Emmons, Thomas R.
Author_Institution
Teradyne Corp., Fridley, MN, USA
Volume
3
fYear
2005
fDate
6-10 March 2005
Firstpage
1441
Abstract
This paper presents a switching power supply design that meets the accuracy, response time, noise level, and current requirements for today´s ATE instruments. It focuses on minimizing high frequency parasitic ringing at the switching waveform edges that interferes with the linear regulator output. The noise reduction features include a transformer with flat planar construction of interleaved coils, a full-bridge with zero-volt switching for the primary control of the transformer, multi-phase circuits to enable maximum response time, and ferrite beads on all switches to control ringing.
Keywords
switched mode power supplies; transformers; zero voltage switching; 48 V; instrument grade power supply; linear regulator output; noise reduction; primary control; response time; switching power supply design; transformer; zero-volt switching; Coils; Delay; Ferrites; Frequency; Instruments; Noise level; Noise reduction; Power supplies; Regulators; Switching circuits;
fLanguage
English
Publisher
ieee
Conference_Titel
Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE
Print_ISBN
0-7803-8975-1
Type
conf
DOI
10.1109/APEC.2005.1453219
Filename
1453219
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