Hysteresis-Dependent Synchronized Load Shift Keying and Reconfigurable Class-D Power Amplifier-Based Fully Integrated Adaptive Control in Wireless Power Transfer System

IF 5.2 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems I: Regular Papers Pub Date : 2025-04-02 DOI:10.1109/TCSI.2025.3550479

Sayan Sarkar;Yuan Yao;Wing-Hung Ki;Chi-Ying Tsui

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引用次数: 0

Abstract

A 13.56-MHz wireless power transfer (WPT) system with fully integrated transmitter (

${\mathrm {T}}_{\mathrm {X}}$

) and receiver (

${\mathrm {R}}_{\mathrm {X}}$

) chips is presented. The receiver’s output voltage is locally regulated using a linear current-sink-based regulator, while global power regulation is achieved at the transmitter through a hybrid control strategy that combines constant off-time and hysteretic control for a reconfigurable power amplifier. Synchronized load-shift keying at the receiver improves the relative change in the primary current of the transmitter by >15%. The adaptive digitally controlled active rectifier achieves a voltage conversion ratio (VCR) and power conversion efficiency (PCE) of 0.92 and 92.4%, respectively, for a

$200~\Omega $

load resistance. The end-to-end efficiency is improved by 25% at heavy load and 14% at light load by enabling TX global power regulation. Both TX and RX chips were fabricated in the BCDlite 180 nm process with 1.8 V/5 V devices. This system achieves a greater operating distance, higher output power, and faster load-transient response while significantly reducing circuit and system design complexity.

查看原文本刊更多论文

基于滞后相关同步负载移位键控和可重构d类功率放大器的无线电力传输系统全集成自适应控制

提出了一种完全集成发射机（${\ mathm {T}}_{\ mathm {X}}$）和接收机（${\ mathm {R}}_{\ mathm {X}}$）芯片的13.56 mhz无线功率传输（WPT）系统。接收器的输出电压使用基于线性电流接收器的调节器进行局部调节，而发送端通过混合控制策略实现全局功率调节，该控制策略结合了可重构功率放大器的恒定断开时间和滞后控制。接收机的同步负载移位键控使发射机一次电流的相对变化量提高了15%。自适应数字控制有源整流器在$200~\Omega $负载电阻下，电压转换比（VCR）和功率转换效率（PCE）分别达到0.92和92.4%。通过启用TX全局功率调节，端到端效率在重载时提高25%，在轻负载时提高14%。TX和RX芯片均采用BCDlite 180 nm工艺，采用1.8 V/5 V器件制造。该系统实现了更大的工作距离、更高的输出功率和更快的负载瞬态响应，同时显著降低了电路和系统设计的复杂性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Circuits and Systems I: Regular Papers 工程技术-工程：电子与电气

CiteScore

9.80

自引率

11.80%

发文量

441

审稿时长

2 months

期刊介绍： TCAS I publishes regular papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: - Circuits: Analog, Digital and Mixed Signal Circuits and Systems - Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic - Circuits and Systems, Power Electronics and Systems - Software for Analog-and-Logic Circuits and Systems - Control aspects of Circuits and Systems.