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A new control strategy for flyback converters
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| Author(s) |
R. Nalepa; N. Barry; P. Meaney |
| Abstract |
Galvanic isolation between the input and the output of the flyback switch-mode power supplies is
required in many cases. The power stage is naturally isolated by the flyback transformer. And the
feedback path is typically isolated by an opto-coupler. However the output voltage also exists (in part)
across the primary side switch in its off stage. This paper investigates the extraction of the output
voltage during the off-time [6]. Results obtained from a flyback converter with a novel control circuit
using cycle by cycle control are shown. The converter operates in both continuous and discontinuous
conduction modes. An equivalent circuit for modeling and analysis of the primary and the secondary
side oscillations is shown. |
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| Filename: | EPE2001 - PP00420 - Barry.pdf |
| Filesize: | 231.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-15 by System |
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