A Digital Multiphase Converter with Sensor-less Current and Thermal Balance Mechanism

Kai Yu Hu, Yu Sin Chen, Chien Hung Tsai

研究成果: Conference contribution

2 引文 斯高帕斯(Scopus)

摘要

This paper presents a sensor-less approach to achieve current balance and thermal balance in a digital voltage mode controlled four-phase buck converter. Rather than utilize current and temperature sensors to gather the current and thermal information as most of previous researches, the sensor-less equivalent resistance (R eq ) ratio estimation is used in this work to obtain the current and thermal information implicitly. Based on the estimative results, the duty offset is further calculated and compensated for each phase to carry out either equal current sharing or uniform thermal distribution. The digital controller was manufactured by TSMC 0.18-μm 1P6M standard CMOS process. The experimental results are proved the practicability of the proposed balancing mechanism. The current balance scheme improves the current sharing error from 35% to 6.3%, while the thermal balance technique narrows down the peak temperature difference from 6.6°C to 1.8°C.

原文English
主出版物標題2018 IEEE Asian Solid-State Circuits Conference, A-SSCC 2018 - Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
頁面175-178
頁數4
ISBN(電子)9781538664124
DOIs
出版狀態Published - 2018 十二月 14
事件2018 IEEE Asian Solid-State Circuits Conference, A-SSCC 2018 - Tainan, Taiwan
持續時間: 2018 十一月 52018 十一月 7

出版系列

名字2018 IEEE Asian Solid-State Circuits Conference, A-SSCC 2018 - Proceedings

Other

Other2018 IEEE Asian Solid-State Circuits Conference, A-SSCC 2018
國家Taiwan
城市Tainan
期間18-11-0518-11-07

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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