A novel driving scheme for synchronous rectifier suitable for modules in parallel

In this paper, a short circuit phenomenon when dc-dc modules with self-driven synchronous rectifier (SR) run in parallel is described. Three existing driving schemes are analyzed and compared. A novel driving scheme for SR maintains the performance of SR as a self-driven scheme, while solving the pr...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2005-11, Vol.20 (6), p.1287-1293
Main Authors: Gu, Y., Zhengyu Lu, Zhaoming Qian, Guisong Huang
Format: Article
Language:English
Subjects:
Applied sciences
Brick
Driving
Electrical engineering
Electrical engineering. Electrical power engineering
Electrical equipment
Electricity supply industry
Electronics
Exact sciences and technology
In parallel
Modules
Power electronics
Power electronics, power supplies
Power supplies
Prototypes
Rectifiers
self-driven scheme
Short circuits
Strontium
Switched capacitor circuits
Switches
Switching circuits
Synchronous
synchronous rectifier (SR)
Voltage
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Description
Summary:In this paper, a short circuit phenomenon when dc-dc modules with self-driven synchronous rectifier (SR) run in parallel is described. Three existing driving schemes are analyzed and compared. A novel driving scheme for SR maintains the performance of SR as a self-driven scheme, while solving the problem of a short circuit when modules run in parallel. In addition, the amplitude of an SR driving voltage can be adjusted by using the proposed scheme. Therefore, the scheme is more attractive in the applications of comparatively high-voltage output. The principle of operation and the characteristics of the scheme are analyzed and verified on a 36-75V input 1.8-V/60-A output experimental prototype, whose size is 1/4 brick and efficiency is above 90% under rating conditions.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2005.857528