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本文提出了一种全集成电池连接的开关电容电压调节器，实现了亚纳秒级响应速度，无需片外元件。该设计解决了移动设备中电池电压与处理器所需低电压之间的转换问题，同时支持高功率密度和高效能。
Lithium-ion batteries are the dominant power source in mobile devices. However, while the supply voltage required for processors and SoCs has scaled down to ~1V, the voltage range of this popular battery remains ~2.9V-4.2V (nominally ~3.6V). To bridge this voltage difference, off-chip power management ICs are typically required. Despite their high efficiency [1], supporting many independent, high-current supplies to e.g. a multi-core SoC is extremely challenging due to cost, area, and supply impedance concerns associated with board and package level parasitics. There is hence strong motivation for efficient, fully integrated voltage regulators (IVRs) that interface directly with the battery while supporting multiple separate on-chip supplies (Fig. 21.6.1a). In order to implement IVRs without requiring process modifications and/or large increases in die area, fully integrated switched-capacitor (SC) DC-DC converters
Hanh-Phuc Le, John Crossley, Seth R. Sanders, Elad Alon
University of California, Berkeley, CA