Design of a fast-transient current-mode buck DC-DC converter

Chia Chieh Wong, Hung Hsien Wu, Ming Hsien Shih, Chia Ling Wei

研究成果: Conference contribution

3 引文 斯高帕斯(Scopus)

摘要

With the fast growing market of the portable devices, high performance power management ICs with fast transient responses have drawn many attentions, especially for the SoC system with dynamic voltage scaling technique. In this work, no extra transient detector is required to achieve fast transient, so it can avoid the errors caused by the transient detector and ensure the system stability. Instead, the proposed technique sends the output voltage variations to the inner current loop through the current sensing circuit, and then adjusts the level of the ramp waveform adaptively. The small-signal model of the proposed converter is presented, which shows that both of the bandwidth and phase margin of the converter are improved by using this technique. The input voltage is 5V and the output voltage is set to 3.3V. Simulation results show that the recovery time of the transient response can be reduced by 70%.

原文English
主出版物標題1st International Future Energy Electronics Conference, IFEEC 2013
發行者IEEE Computer Society
頁面767-771
頁數5
ISBN(列印)9781479900718
DOIs
出版狀態Published - 2013
事件1st International Future Energy Electronics Conference, IFEEC 2013 - Tainan, Taiwan
持續時間: 2013 十一月 32013 十一月 6

出版系列

名字1st International Future Energy Electronics Conference, IFEEC 2013

Other

Other1st International Future Energy Electronics Conference, IFEEC 2013
國家/地區Taiwan
城市Tainan
期間13-11-0313-11-06

All Science Journal Classification (ASJC) codes

  • 能源工程與電力技術
  • 電氣與電子工程

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