A Fully Integrated 85%-Peak-Efficiency Hybrid MultiRatio Resonant DC-DC Converter with 3.0-to-4.5V Input and 500µA-to-120mA Load Range by a fast capacitive level shifter, which results in very energy efficient highfrequency signal shifting. In contrast, pulsed cascode level shifters are used for

📋 论文概要

该论文提出了一种全集成混合多比率谐振DC-DC转换器，适用于可穿戴设备等需要超紧凑和扁平模块的应用。通过混合拓扑集成电感和电容元件，在宽负载范围（500µA至120mA）内实现了85%的峰值效率，解决了传统转换器在轻载下效率低的问题。

💡 主要创新点

• 提出混合多比率谐振拓扑，结合开关电容和电感谐振，实现高功率密度和宽负载范围的高效率。
• 采用全集成设计，无需外部元件，适用于超紧凑模块。
• 通过动态开关控制优化轻载效率，在500µA至120mA负载范围内保持高效。

🏷 关键词

📄 原文摘要

static losses compared to the fast dynamic level shifters. Peter Renz1, Maik Kaufmann1, Michael Lueders2, Bernhard Wicht1 Leibniz University Hannover, Hannover, Germany 2 Texas Instruments, Freising, Germany 1 DC-DC converters for applications like wearables require an ultra-compact and flat module size. Hybrid converters are a promising converter class that supports integration of inductive and capacitive components, while minimizing losses and improving power density. Since many of these applications are often in sleep mode, high efficiency has to be achieved from high to low output power. Fully integrated 3-level buck converters [1,2] do not maintain good efficiency over the full load range, since they operate at high switching frequencies, required for inductive PWM operation with small inductors. The converter in [3] achieves better efficiencies, but has a small conversion ratio. Resonant SC converters [4,5]

👥 作者与机构

SwCR, since the controller sets the switch conductance information Sw<0:7> at, a rate, which is far below fsw. These level shifters are optimized to have ~8× lower