响应时间为10μsec的低EMI SIDO无线电力传输系统

ESSCIRC Conference 2015 - 41st European Solid-State Circuits Conference (ESSCIRC) Pub Date : 2015-11-02 DOI:10.1109/ESSCIRC.2015.7313875

T. Kawajiri, Takahiro Moroto, H. Ishikuro

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引用次数: 4

摘要

本文介绍了一种用于移动应用的单电感双输出(SIDO)无线供电系统。通过每个开关时钟周期更新反馈回路中的控制信号，实现对负载变化的快速跟踪，同时采用伪随机序列PWM (PRS-PWM)抑制杂散发射。采用0.18μm CMOS工艺制作发射端和接收端芯片，安装在无线功率传输测试板上。系统的响应时间小于10μsec。两个输出电压分别调节为8V和16V，当总输出功率为500mW时，效率最高达到41%。

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A low EMI SIDO wireless power transfer system with 10μsec response time

This paper describes a system of single-inductor-dual-output (SIDO) wireless power delivery for mobile applications. By updating control signal in the feedback loop by every switching clock cycle, fast tracking to the load change is realized while spurious emission is suppressed by using pseudorandom-sequence PWM (PRS-PWM). Transmitter and receiver chips were fabricated in 0.18μm CMOS process and mounted on the wireless power transfer test board. The system achieved response time shorter than 10μsec. Two output voltages are regulated at 8V and 16V, and maximum efficiency of 41% was achieved when the total output power is 500mW.

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ESSCIRC Conference 2015 - 41st European Solid-State Circuits Conference (ESSCIRC)

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