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本文提出了一种无开关电容稳压器（SCVR）的动态电压堆叠方案，用于物联网微控制器，实现了115nA的睡眠电流和1205的ULPMark-CP得分。该方案解决了传统设计在低负载电流下SCVR效率低、睡眠电流无法进一步降低的问题。
applications require ultra-low power consumption. In a conventional design, most modules except the crystal oscillator (XO32), real-time clock (RTC), and retention memory are turned off to reduce the current in sleep state, but the sleep power still accounts for most of the total power consumption. When the load current is reduced to ~100nA, the transient current of a switchedcapacitor voltage regulator (SCVR) remains unchanged (~100nA), so that power efficiency is low and the sleep current cannot be reduced further. Voltage stacking has been proposed to address power efficiency [1,2]. Prior voltage stacking architectures could not realize dynamic switching between flat mode and stack mode, leading to high dynamic power in the normal state. In addition, the SCVR still consumes some power
Xiaomin Li1, Yibo Xu1,2, Lizheng Ren1, Weiwei Ge1,2, Jianlong Cai1, Xinning Liu1,2,
Jun Yang1,2 Nanjing Low Power IC Technology Institute, Nanjing, China 2 Southeast University, Nanjing, China 1 Limited by battery capacity, advanced MCUs for IoT