Title :
Current ripple bounds in interleaved DC-DC power converters
Author_Institution :
Zytec Corp., Eden Prairie, MN, USA
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;
Conference_Titel :
Power Electronics and Drive Systems, 1995., Proceedings of 1995 International Conference on
Print_ISBN :
0-7803-2423-4
DOI :
10.1109/PEDS.1995.404978
