電源管理Power management

電源管理與綠能Power Management and Green Energy

團隊發展單電感多輸出熱電能量擷取介面，將冷啟動、最大功率點追蹤與升降壓轉換整合，處理微量熱電能源的啟動與分配問題。2017年於TJCAS發表具280 mV冷啟動能力的相關轉換器，並於ISCAS 2023發表熱電能量擷取系統之冷啟動電路研究。這些成果建立低電壓能源進入感測系統所需的電路基礎。Single-inductor multiple-output thermoelectric interfaces integrate cold start, maximum power point tracking and buck–boost conversion to address startup and allocation of small thermoelectric energy sources. A converter with 280 mV cold-start capability was presented at TJCAS 2017, followed by thermoelectric cold-start circuit work at ISCAS 2023. These results establish circuitry for bringing low-voltage environmental energy into sensing systems.

為避免電源管理電路本身消耗過多能源，團隊開發無須外接輸出電容的可編程低壓差穩壓器，以AB類輸入級在負載變動時提供較大的瞬時調節能力，穩態時則維持低電流。量測展示250 nA靜態電流、200 mV最低壓降與0.17 mV/V電源調整率，在0.1%輸出電壓誤差條件下可供應1 mA負載。To limit the energy consumed by power management itself, the team developed a programmable low-dropout regulator without an external output capacitor. A class-AB input stage provides larger instantaneous regulation during load changes while maintaining low steady-state current. Measurements showed 250 nA quiescent current,200 mV minimum dropout and 0.17 mV/V line regulation, supplying a 1 mA load at 0.1% output-voltage error.

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