本論文為應用於生理訊號擷取系統且具備手機耳機孔電源轉換介面之電源管理系統，在此提出一個具備高能量轉換效率全波橋式整流器、低功耗穩壓器及低溫度係數參考電壓之電源管理系統。整體電路設計目標皆朝向低功耗與高能量轉換效率，目的為達到長時間的應用。本論文分為兩個版本，第一個版本包含整流器及穩壓器，第二個版本除了整流器及穩壓器以外，加入參考電壓電路，使其成為完整的電源管理系統。
第一個版本中，提出一個高能量轉換效率全波橋式整流器及低功耗穩壓器，利用手機透過耳機孔聲道產生能量，經由整流器將音頻交流訊號轉成直流電壓，並將主動整流器概念帶入被動整流器中，減少不必要的漏電流，以提升電壓和能量轉換效率。然而，為了確保後端電路的供應電壓穩定在1.2 V，在整流器輸出串接一個低功耗線性穩壓器，此穩壓器特色為低負載電容，因此可減少印刷電路板面積，並採用假電阻實現回授電阻，達到低功耗之目的，此外，利用電壓緩衝器及零點追蹤技術提高電路穩定度與操作頻寬。由量測結果得知整流器在負載阻抗為2 kΩ，輸入電壓擺幅為1.77 VP-P條件下，能量轉換效率可達到87.2%，而穩壓器在輸入電壓為1.5 V，負載電流為1 mA條件下，功率消耗為27.25 μA。
第二個版本中，為了提供穩壓器一個穩定的參考電壓，本論文提出一個低溫度係數且低功耗之帶隙參考電壓電路，由於一階溫度補償後之輸出電壓仍有二階溫度效應，故採用一個操作在弱反轉區之低功耗參考電壓進行二階曲率溫度補償，使其補償後之輸出電壓更接近零溫度係數。由量測結果可知，輸入電壓在1.5 V，溫度範圍在-10℃到125℃的條件下，溫度係數可達30.95 ppm/ºC，功率消耗為3.6 μW。
上述兩顆晶片皆採用TSMC 0.18μm 1P6M CMOS製程實現，第一版晶片面積762 μm×637 μm，第二版晶片面積為885 μm×908 μm。

In this study, a high-efficiency low-temperature-coefficient (TC) power management for harvesting energy from a headphone jack is proposed. This type of power management system is composed of a full-wave low-voltage active rectifier, a low-dropout voltage (LDO) regulator and a current-mode bandgap voltage reference (BGR). The proposed BGR with a curvature-compensation can be achieved temperature coefficient of 15.33 ppm/℃ over the temperature range of 65 ℃. The proposed rectifier achieves a maximum measured power conversion efficiency of 87.2% under low 1.77 Vpp AC input signal with a 2 kΩ output load resistance. The power consumption of BGR is 3.6 μW because the compensation circuit is operated in sub-threshold region.

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