2010•Chinese Journal of Power SourcesRequires access
Design of LLC resonant converter based on UCC25600
Yugang Yang
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Abstract
A LLC resonant converter controller UCC25600 made by TI company was presented. The principle of LLC half bridge resonant converter and the use of UCC25600 in LLC resonant converter were analyzed. Using the leakage inductance and excitation inductance of the transformer, the resonant inductor was integrated into the transformer by magnetic integration, which can reduced not only the number and size of the magnetic components, but also the secondary leakage inductance compared with other LLC IM structure to ensure the ZCS of the rectifier diode. Finally, A LLC resonant converter prototype was built. The result indicates that the LLC resonant converter has many advantages, such as simple topology, stable running, and steady output.