A 10mW Fully Integrated 2-to-13V-Input BuckBoost SC Converter with 81.5% Peak Efficiency

📋 论文概要

该论文提出了一款全集成、输入电压范围为2至13V的升降压开关电容转换器，解决了宽输入电压范围下高效功率转换的难题，峰值效率达81.5%。

💡 主要创新点

• 提出了一种新型升降压SC转换器拓扑，克服了传统SC转换器输入输出电压比固定的限制。
• 实现了全集成设计，无需外部电感，适用于IoE、工业和汽车等宽输入电压应用。

🏷 关键词

📄 原文摘要

In recent years, significant progress has been made on switched-capacitor DC-DC converters as they enable fully integrated on-chip power management. New converter topologies overcame the fixed input-to-output voltage limitation and achieved high efficiency at high power densities [1-6]. SC converters are attractive to not only mobile handheld devices with small input and output voltages, but also for power conversion in IoE, industrial and automotive applications, etc. Such applications need to be capable of handling widely varying input voltages of more than 10V, which requires a large amount of conversion ratios [1-3]. The goal is to achieve a fine granularity with the least number of flying capacitors. In [1] an SC converter was introduced that achieves these goals at low input voltage VIN ≤ 2.5V. [2] shows good efficiency up to VIN = 8V while its conversion ratio is restricted to ≤1/2 with a limited, non-equidistant number of conversion steps. A

👥 作者与机构

Daniel Lutz, Peter Renz, Bernhard Wicht

Reutlingen University, Reutlingen, Germany