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A novel current-limiting method for LLC DC/DC resonant converter
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| Author(s) |
Duan FEIYUE, Xu MING, Yang XU, Yao YUAN |
| Abstract |
Constant current control is a difficult issue for LLC resonant converter due to its variable frequency operation.After detailed analysis on the short circuit operation of conventional LLC DC-DC converter, a novel current-limiting method with the help of diode clamping is proposed.Against the conventional wisdom,the switching frequency is reduced toward zero to control the output current under over-load and short circuit condition ultimately.By doing so,the ultra-high frequency operation can be avoided for current-limiting at short circuit.A 480W 12V/40A prototype with proposed concept has been built for verify the theoretical analysis. |
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| Filename: | 0097-epe2014-full-12521922.pdf |
| Filesize: | 2.533 MB |
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| Type |
Members Only |
| Date |
Last modified 2015-06-08 by System |
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