Current ripple bounds in interleaved DC-DC power converters

Author

Chang, Chin

Author_Institution

Zytec Corp., Eden Prairie, MN, USA

fYear

1995

fDate

21-24 Feb 1995

Firstpage

738

Abstract

In distributed power supply systems, the parallelism of DC-DC power converters is a basic architecture. In this paper, the authors use the time domain method to show that the amplitude of the input/output current ripple of N(⩾1) parallelly interleaved modules is always upper bounded by that of the individual modules for buck, boost, flyback, Cuk, and SEPIC power converters if the phase shift among the modules is 2π/N. Efficient numerical algorithms for predicting the net ripple amplitude in interleaved power modules are derived based on the insight gained from the time domain method

Keywords

DC-DC power convertors; network analysis; power supplies to apparatus; power system harmonics; time-domain analysis; Cuk convertor; SEPIC power converter; boost convertor; buck convertor; current ripple bounds; distributed power supply system; flyback convertor; input/output current ripple amplitude; interleaved DC-DC power converters; numerical algorithms; parallelism; phase shift; time domain method; DC-DC power converters; Drives; Frequency domain analysis; Inductance; Interleaved codes; Maintenance; Multichip modules; Power supplies; Power system reliability; Prediction algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 1995., Proceedings of 1995 International Conference on

Print_ISBN

0-7803-2423-4

Type

conf

DOI

10.1109/PEDS.1995.404978

Filename

404978