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Design of Flyback Converter with Voltage Driven Synchronous Rectifier
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| Author(s) |
Bong-Suck Kim, Ho-Seon Ryu, Man-Su Shin, Joo-Hyun Lee, Ik-Hun Lim |
| Abstract |
In low output voltage dc-dc converters,
power losses is significant, due to the conduction of
rectifying device. Using synchronous rectifiers instead
of the conventional fast recovery diodes is an effective
solution to this problem in most topologies. However,
for synchronous rectifier to perform effectively, it
requires an external gate drive with proper sensing
and timing control circuits. This can increase the
complexity and cost in converter hardware
implementation. Design of Flyback Converter with
Voltage Driven Synchronous Rectifiers is proposed.
The proposed SR is the voltage driven synchronous
rectifier (VDSR), which operates depending on the
voltage drop across the drain and source of the
MOSFET. Experimental results for the 85W
(12V/7.1A) proposed converter are shown. |
| Download |
| Filename: | T2-106.pdf |
| Filesize: | 266.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2007-03-08 by System |
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