近年來隨著物聯網的蓬勃發展，其應用廣泛的存在於日常生活之中，小至個人感測器，大至城市設施，都需要無線傳感器來收集數據及傳輸數據，然而這些無線傳感器的能量來源是其需要面臨的一大問題。雖然可以使用電池來解決供電問題，然而後續所要面臨的，將是更換電池所需要的大量人力成本。做為替代的方案，獵能技術被用來取代電池，從環境中獵取能量並且提供給傳感器使用，可以有效延長無線傳感器的運作時間。本研究提出一個應用於獵取光能的升壓型直流-直流轉換器，其運用擾動觀察法使太陽能電池能工作在其最高功率點，並具備了休眠模式機制，可有效提升系統轉換效率。另外，為了在低功率下能有好的轉換效率，轉換器操作於非連續導通模式(DCM)，其控制方法也將使用脈波頻率調變(PFM)進行控制。
此外，不管是能量來源的太陽能電池或提供無線傳感器能量的電源轉換器，其發展趨勢都必須走向微小化，因此本研究採用轉換效率較高的單晶矽太陽能電池做為能量來源，在同樣的能量下有較小的面積。本晶片使用台灣積體電路公司(TSMC)提供之0.18μm 1P6M Mixed-signal Standard CMOS 製程，晶片總面積為1018μm×931μm，並採用DIP 32 S/B進行封裝。所測得之最佳追蹤效率為99.3%，最佳轉換效率為95.3%，最佳總效率為94.7%。

In this thesis, a boost dc-dc converter for photovoltaic (PV) energy harvesting is proposed. A perturb and observe method is used to track the maximum power point of the PV cell, and the sleep mode is also included in the proposed converter to reduce the power consumption and to improve the conversion efficiency.
The proposed chip was fabricated by TSMC 0.18μm 1P6M mixed-signal standard CMOS process, and the chip area is 0.948 mm2. According to measurement results, the peak tracking efficiency is 99.3%, the peak conversion efficiency is 95.3%, and the peak total efficiency is 94.7%.

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