本論文主旨為研製可操作於定電壓/定電流雙輸出模式之全橋相移式串聯諧振直流/直流電源供應器，其以全橋串聯諧振轉換器(Full-Bridge Series Resonant Converter, FB SRC)為主軸，並結合全橋相移電路(Phase-Shifted Full-Bridge Circuit)之特點，討論於定電壓輸出模式下，解決輕載操作時串聯諧振轉換器難以藉由提高切換頻率因而有效調節輸出電壓，以及輸出於定電流控制時，因為高切換頻率所造成的高諧振電感溫升等問題。本論文將介紹各種模式下的電路動作狀態，與分析動作區間之等效電路，並提出結合變頻與定頻相移之創新整合控制策略，最後研製一台規格為750 W(12 V/62.5 A)的全橋相移式串聯諧振轉換器，同時具有輸出定電壓與輸出定電流之整合控制機制，驗證所提之控制功能與理論之可行性。

This thesis focuses on design and control of a phase-shifted full-bridge series-resonant converter (PS-FB SRC) with dual constant current/constant voltage output modes. Based on the FB SRC, the features of the PS FB converter are combined to solve two problems. The output voltage of an SRC is loosely-regulated at light-load conditions since the switching frequency cannot be increased beyond the designated highest frequency. Moreover, the resonant inductor temperature is high because of the high switching frequency at constant current output control mode. The operating principles and equivalent circuits under various modes of the presented converter are analyzed in detail. A new integrated control strategy is proposed by combining the pulse phase modulation (PPM) and pulse frequency modulation (PFM). Finally, a 750 W (12 V/62.5 A) PS-FB SRC with constant-current and constant-voltage control modes is implemented to verify the feasibilities of the theoretical analysis and the control functions.

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