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Study of Stabilization Design for On-Board Distributed Power Architecture
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| Author(s) |
Seiya Abe, Masahiko Hirokawa, Toshiyuki Zaitsu, Tamotsu Ninomiya |
| Abstract |
The bus architecture consisting of bus converter
and Point of Load (POL) is generally used as distributed
power supply system for IT infrastructure equipments. The
most important factor is the system stability in bus
architecture design. The overlap between the output
impedance of bus converter and input impedance of POL
causes system instability, and it has been an actual problem.
Increasing the bus capacitor, system stability can be
reduced easily. However, due to the limited space on the
system board, increasing of bus capacitors is impractical.
The urgent solution of the issue is desired strongly. This
paper presents the stability design for on-board distributed
power system consisting of full-regulated bus converter and
POLs. The output impedance of the bus converter and the
input impedance of the POL are analyzed, and it is
conformed by experimentally for stability criterion. As a
result, the standard of the discrimination of stability on a
frequency response of input and output impedance is
clarified. Furthermore, the design process for system
stability is proposed. |
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| Filename: | T2-108.pdf |
| Filesize: | 161.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2007-03-08 by System |
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