A One-Step 325V to 3.3-to-10V 0.5W Resonant DC-DC Converter with Fully Integrated Power Stage and 80.7% Efficiency

📋 论文概要

本文提出一种单级325V到3.3-10V的谐振DC-DC转换器，全集成功率级，输出功率0.5W，效率达80.7%。解决了高压直接降压中的电平移位、共模瞬态抑制等难题。

💡 主要创新点

• 采用单步谐振拓扑实现从325V到低电压的直接降压，避免多级级联损耗。
• 全集成高压功率级和驱动电路，包括电平移位器、共模瞬态抑制电路和自举供电，提高集成度和可靠性。

🏷 关键词

📄 原文摘要

disabled after a fixed delay. It discharges the HSSet and HSReset nodes to prepare the level shifter for the next signal transmission. Due to measured slew rates as high as 20V/ns, a common-mode blanking circuit is used to improve commonmode transient immunity (CMTI). Pull-up and pull-down diodes are implemented for under- and over-voltage protection and for charge recycling during the transients. A bootstrap circuit with a shunt regulator (Fig."11.3.3, bottom right) supplies the high-side with respect to the varying source potentials VS. DUVP acts as under-voltage protection during transients. Turning on the high-side devices causes a recharging of CBST during the transient. To prevent reverse-recovery losses in DBST, MR is placed in series and turned off right before HV1 or HV2 turn on. The control circuit for HV1, HV2, LV1, LV2 and MR (Fig."11.3.3 bottom left) converts each edge of a rectangular input signal with 50% duty cycle into a series

👥 作者与机构

Christoph Rindfleisch, Bernhard Wicht

Leibniz University Hannover, Hannover, Germany