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本文提出了一种三相双路径降压-升压转换器，通过结合双路径拓扑与自适应三相控制技术有效降低导通损耗。该控制方法最小化电感电流纹波，从而允许使用低直流电阻的小尺寸电感，在0.13µm CMOS工艺下实现了96.6%的峰值效率，并采用1.92mm³电感和0402尺寸飞电容。
Abstract This paper presents a 3-phase dual-path buck-boost converter that effectively reduces conduction loss by combining a dual-path topology with adaptive 3-phase control. The proposed control technique minimizes inductor current ripple, which allows the use of a low-inductance inductor with low DCR, while reducing the inductor current. Fabricated in a 0.13µm CMOS process, the converter achieves a high peak-efficiency of 96.6% with a small 1.92mm3 inductor and 0402-size flying capacitors. Buck-boost converters are widely used to provide a stable output voltage (VO) for powering functional blocks in mobile devices, which are supplied from a Li-ion battery with an input voltage (VIN) range of 2.8- to-4.2V depending on the state of charge, as illustrated in Fig. 16.9.1 (top). Multi-mode buck-boost converters provide optimized performance in each operating mode, but the multi-mode operation causes a significant noise in VO during mode
Minsu Kim1, Yunho Lee1, Hyunjun Park1, Hongseok Kim1,2, Woojoong Jung1,2, Minwoo Kim2, Junhyun Bae2, Hyoung-Seok Oh2, Hwayeal Yu2, Hyung-Min Lee1
Korea University, Seoul, Korea, 2Samsung Electronics, Hwaseong, Korea