A 125 kHz Power Recovery Circuit Design for Battery-less TPMS SoC

ZHAO Yu-zhang; WU Li-ji; ZHANG Xiang-min; WU Xing-jun

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A 125 kHz Power Recovery Circuit Design for Battery-less TPMS SoC

更新时间：2026-09-04

- A 125 kHz Power Recovery Circuit Design for Battery-less TPMS SoC
- Vol. 34, Issue 8, Pages: 103-108(2017)
- 作者机构：
  
  1. 清华大学微电子学研究所,北京,100084
  2. 清华大学信息科学与技术国家实验室,北京,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2017
- 稿件说明：
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赵裕章, 乌力吉, 张向民, 吴行军. 无电池胎压监测SoC的125 kHz电源恢复电路设计与研究[J]. 微电子学与计算机, 2017, 34(8): 103-108.

ZHAO Yu-zhang, WU Li-ji, ZHANG Xiang-min, et al. A 125 kHz Power Recovery Circuit Design for Battery-less TPMS SoC[J]. 2017, 34(8): 103-108.
赵裕章, 乌力吉, 张向民, 吴行军. 无电池胎压监测SoC的125 kHz电源恢复电路设计与研究[J]. 微电子学与计算机, 2017, 34(8): 103-108. DOI：

ZHAO Yu-zhang, WU Li-ji, ZHANG Xiang-min, et al. A 125 kHz Power Recovery Circuit Design for Battery-less TPMS SoC[J]. 2017, 34(8): 103-108. DOI：

摘要

胎压监测系统（TPMS）是汽车电子安全的重要组成部分.无电池胎压监测系统可以提高检测频率，提高安全性，是胎压监测系统的发展趋势.采用125 kHz作为无线能量传输的频率，采用ASMC 0.35 μm BCD汽车电子工艺，针对轮胎转动时无线能量传输距离不断变化的情况，完成了一种用于无电池胎压监测SoC的电源恢复电路的设计与研究，后仿真结果表明，可以将0.8 V到7.5 V范围内的125 kHz交流电信号转化为SoC所需的3 V稳压电源，最大输出电流为10 mA.完成了对各模块转换效率的分析与优化的同时，也考虑了实际工作环境中的电磁干扰等可靠性问题，能够满足无电池胎压监测SoC的电源需求.

Abstract

Tire Pressure Monitoring System (TPMS) is a necessary part for automobile safety. The battery-less TPMS on chip can overcome the disadvantages such as battery life and environmental pollution associated with batteries. This paper designs the main part of power recovery circuit for battery-less TPMS SoC

considering the distance of the wireless power transfer changes while the tires rolling. 125 kHz is chosen as the frequency of the battery-less system

and the design is based on ASMCs 0.35 μm BCD automotive electronic technology. Back simulation result shows that the 125 kHz AC input voltage

ranging from 0.8~15 V

can be converted to a 3 V DC source. Maximum output current of the power recovery circuit is 10 mA. The convention efficiency is also analyzed and optimized. The electromagnet interference and reliability of the TPMS are taken into consideration. The circuit can satisfy the TPMS working requirements in the practical environment.

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references

USA Toru Tanzawa. On-chip high-voltage generator design[M]. USA: Springer, 2012.

USA Ma Dongsheng, Rajdeep Bondade. Reconfigurable Switched-Capacitor Power Converters[M]. USA: Springer, 2012: 72-80. DOI: 72

涂志远. 汽车无电池胎压监测SoC关键IP核设计与实现[D]. 北京: 清华大学, 2015.

Banba H, Shiga H, Miyaba T, et al. A CMOS bandgap reference Circuit with sub-1-V Operation[J]. IEEE Journal of Solid-State Circuits, 1999, 34(5): 670-674. DOI: 670

Wang Yi, Wu Liji, Tu Zhiyuan, et al. A 125kHz low frequency power recovery circuit for battery-less TPMS SoC[C]//IEEE 11th International Conference on Application Specific Integrated Circuit (2015). IEEE, 2015.

柴彬. TPMS技术对汽车行车安全的影响[J]. 科技信息, 2010, 27(18): 1001-9960. DOI: 1001

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