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Design Considerations for a Low-Voltage High-Current Redundant Parallel Voltage Regulator Module System.
- Source :
-
IEEE Transactions on Industrial Electronics . 04/01/2011, Vol. 58 Issue 4, p1330-1338. 9p. - Publication Year :
- 2011
-
Abstract
- This paper presents the design considerations for a redundant parallel multiphase voltage regulator module (VRM) system. The VRMs are modulated to achieve a controlled current source property, which helps in achieving good current sharing among modules with true redundancy. The steady-state, small-signal, and large-signal characteristics of the control are discussed. A novel local sense feedback is used to improve the large-signal dynamics of the parallel system. Two 3.3-V/140-A prototypes are used to validate the design concepts. Experimental results show good correlation with the theoretical models. The current sharing between the parallel modules is within 10%, and the dynamic voltage response improvement is 33%, as a result of the local sense feedback. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02780046
- Volume :
- 58
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Industrial Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 59346762
- Full Text :
- https://doi.org/10.1109/TIE.2010.2049714