地球暖化嚴重。其中,利用電源管理積體電路達到節能、省能、省電的目標,是近代中相當重要的課題。 論文第一部分提出萬用鋰電池充電器,此晶片設計一個可正反接的三段式線性鋰電池充電器並採用TSMC 0.35μm 2P4M CMOS製程實現。三段式充電包含涓流充電、大電流充電與恆壓充電,此技術可以減少對鋰電池傷害。提出的架構將正反接功能與三段式充電器作結合,設計出一個適用於鋰電池的萬用充電器。此電路最大電流為300mA,恆壓模式4.2V。當輸入電壓4.5V時,可精確提供輸出電壓範圍從2.2V到4.2V,整體晶片面積約為1.5×1.5mm2(含PADs)。 論文第二部分提出電流回授白光二極體驅動器,其採用TSMC 0.35μm 2P4M CMOS製程實現,晶片面積約為1.498×1.309mm2(含PADs)。使用直流-直流升壓電路提供LED所需的電壓,將升壓電路串接LED,設計成電流回授,再搭配電流源對LED調光。當輸入電源電壓為3.6V時,此轉換器可提供輸出電壓範圍從6到7V,輸出電流為20到30mA。
Global warming phenomenon is serious. Power management IC to achieve energy saving target is a very important problem. The first part of this thesis proposes an omnipotent Li-Ion battery charger. The proposed chip fabricated with TSMC 0.35μm DPQM CMOS processes can create a reversible three-stage linear Li-Ion battery charger and is The three-stage charger functions include trickle current charging, large current charging and constant voltage charging. This technique can reduce the damage of Li-Ion battery. The proposed structure creates an omnipotent charger with the reversible three-stage charger. The proposed circuit have a maximum charge current of 300mA and a constant voltage of 4.2V, at an input voltage of the proposed circuit is set to 4.5V. The omnipotent charger can precisely provide an output voltage VOUT between 2.2V and 4.2V. ; and that the chip area is 1.5×1.5mm2(with PADs). The second part of this thesis introduces the design of the current feedback White Light Emitting Diode(WLED) driver, which is fabricated with a TSMC 0.35μm 2P4M CMOS process with the chip area of roughly 1.498×1.309 mm2 (with PADs). The proposed scheme not only structure by using current feedback, but also dimming the LED with current source. Note that the converter precisely provides an output voltage from 6V to 7V and an output current from 20mA to 30mA at an input voltage of 3.6V.