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该论文提出了一种占空比无关的DC-DC升压转换器，旨在解决传统升压转换器在低输入电压下需要高压器件导致开关损耗大的问题。通过创新的拓扑结构和模式自适应控制，实现了96.5%的峰值效率，并降低了输入级电压应力。
to efficiently convert a low input voltage (VIN) to a higher output voltage (VOUT) in USB- or battery-powered mobile systems, including battery chargers (10 to 13V), OLED drivers (5 to 13V), etc. The conventional boost converter (CBC) needs the use of high-voltage (HV) devices such as LDMOS to withstand its high VOUT. Typically, HV devices have larger active area and parasitic capacitance compared to low-voltage (LV) devices with the same on-resistance (RON), resulting in the increase of switching loss (i.e., lower switching performance). Moreover, as the duty (D) increases for higher VOUT in a fixed conversion ratio (CR=VOUT/VIN), the inductor current (IL) also increases in proportion to 1/(1–D) times of the load current (ILOAD). Since a large-sized inductor with low parasitic DC resistance
Minsu Kim1, Woojoong Jung1, Hyunjun Park1, Junho Song1,2, Youngkook Ahn2,
Taekyu Nam2, Yoonsoo Shin2, Young-Jin Woo2, Hyung-Min Lee1 Korea University, Seoul, Korea LX Semicon, Seoul, Korea 1 2 DC-DC step-up converters have been widely utilized