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本文提出一种基于Buck的升降压转换器，通过嵌入1/2和3/2电荷泵，实现了97%的高效率和6µs的快速恢复时间，解决了传统非反相Buck-Boost转换器效率仅略高于90%的问题。
Yeunhee Huh1, Gyeong-Gu Kang1, Jeong-Hyun Cho1, Sang-Jin Lim1, Se-Hong Park1, Hyung-Min Lee3, Gyu-Hyeong Cho1 KAIST, Daejeon, Korea Siliconworks, Daejeon, Korea 3 Korea University, Seoul, Korea 1 2 Lithium-ion batteries are generally used in mobile devices, but the voltage range of the battery varies from 2.7 to 4.2V. To provide a mid-3V-range output from the battery, a converter capable of step-up/down-conversion is necessary. For this purpose, non-inverting buck-boost topologies with multimode control [1-3] have been widely used. However, they have limited efficiency slightly higher than 90%, which comes from the fact that a main current path always encompasses two switches. To increase the efficiency in the buck mode where the converter operates for most of the usage time, a flying capacitor buck-boost (FCBB) was proposed in [4]. Despite its high power efficiency, it requires large-size LDMOS
Min-Woo Ko1, Ki-Duk Kim1, Young-Jin Woo2, Se-Un Shin1, Hyun-Ki Han1,