A 90.7%-Efficiency Piezoelectric Resonator-Based Sigma Converter with 6-Phase 2-DoF On-Chip Regulation and Zero-Standby Sigma Mode for Transient and Output Power Enhancement

📋 论文概要

该论文提出了一种基于压电谐振器的sigma转换器，采用片上sigma调节系统实现精确高效的直流-直流转换，并引入零待机sigma模式以改善瞬态响应和输出功率，解决了传统片外控制器的挑战。PR转换器和PR-sigma转换器分别实现了91.2%和90.7%的峰值效率。

💡 主要创新点

• 提出片上sigma调节系统，替代传统片外控制器，实现压电谐振器基DC-DC转换器的精确控制。
• 实现6相2自由度（2-DoF）片上调节，提高调节精度和灵活性。

📄 原文摘要

Abstract This paper proposes an on-chip sigma regulation system for the accurate and power-efficient control of piezoelectric resonator (PR)-based DC-DC converters to address the challenges of conventional off-chip controllers. A zero-standby sigma-mode is implemented for transient response/output power improvement. Peak efficiencies of 91.2% and 90.7% are achieved for the PR converter and the PR-sigma converter respectively. Piezoelectric resonators (PRs) are promising inductor substitutes for compact, magnetically-free DC-DC power conversion. Operating in the inductive band between the resonance (fr) and anti-resonance (far) frequencies, they offer low mechanical impedance and efficient energy transfer (Fig. 16.7.1, top). Various PR-based converter topologies have been developed [1-14]; however, the control mechanisms have been challenging since the undesired vibration harmonics corrupt the voltage/current signals and complicate timing

👥 作者与机构

Shunmin Jiang1, Tiansu Wang1, Patrick Mercier2, Sijun Du1

Delft University of Technology, Delft, The Netherlands, 2University of California, San Diego, CA