LLC型串并聯諧振變換器的設計與實現

摘要：LLC型串并聯諧振變換器具有較高的轉換效率，根據電路直流增益特性、諧振部分阻抗特性及軟開關實現條件，分析推導了主要參數設計方法。最后，結合ST公司推出的L6599集成芯片的特點給出外圍控制電路設計，設計完成樣機，測試結果和實驗數據證明了設計的可行性。 敘詞：零電壓開關 串并聯諧振 L6599 Abstract：LLC Series-parallel resonant converter operates more efficiently. In this paper, some main design considerations have been improved, according to the DC voltage gain, the input impedance magnitude of the resonant tank, and the qualification of achieving zero-voltage-switching or zero-current-switching. Finally, a half-bridge LLC resonant converter prototype was built up based on L6599, completing pin settings. And the experimental results verified the design. Keyword：Zero-voltage-switching, Series-parallel resonant, L6599