隨著在系統單晶片（System on Chip, SoC）手持式裝置的發展，電源轉換器希望利用更先進的製程已達到更小的佔位面積和更低的成本，並同時輸出多個電壓以滿足不同的元件需求。本論文提出的單電感雙輸出三階降壓式轉換器結合單電感雙輸出架構和三階降壓架構的優點，並使用波谷電流模式和電壓模式控制，在使用單一電感供給不同輸出的情況下，進一步降低所需之電感大小，滿足減小電感佔位面積的目的。
本晶片以TSMC 0.35 μm 2P4M CMOS 製程實現，晶片面積含PADs為3.4×1.65 mm2。功率級輸入電壓為 5 V、輸出電壓分別為1.5 V、1.2 V，切換頻率為200 kHz，外接電感與電容分別為33 μH與300 μF，功率開關使用外接元件，輸出負載範圍為300 mA至900 mA。

With the development of system-on-chip (SoC, system-on-chip) handheld devices, power converters would want to achieve smaller footprints and lower costs with new advanced IC processes. They also expect to be able to supply multiple sets of outputs at the same time. Single inductor dual output three level buck converter is proposed in this thesis. Using Valley current mode and Voltage mode control. It combines the advantages of single inductor dual output and three level buck architectures to achieve dual output with a single small inductor.
The chip is implemented with TSMC 0.35 μm 2P4M CMOS technology and the size of chip including pads was 3.4×1.65 mm2. The power stage input voltage is 5 V. The output voltages are 1.5 V and 1.2 V, and the switching frequency is 200 kHz. The off chip inductance and capacitance are 33 μH and 300 μF. The power switches are off chip. The output load range is 300 mA to 900 mA.

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