研究生: |
柯育寬 Yu-kuan Ke |
---|---|
論文名稱: |
全橋相移式串聯諧振直流/直流轉換器之控制IC A Control IC for Full-Bridge Phase-Shifted Series-Resonant DC-DC Converters |
指導教授: |
羅有綱
Yu-Kang Lo 邱煌仁 Huang-Jen Chiu |
口試委員: |
王見銘
Chien-Ming Wang 劉邦榮 Pang-Jung Liu |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
論文出版年: | 2010 |
畢業學年度: | 98 |
語文別: | 中文 |
論文頁數: | 77 |
中文關鍵詞: | 串聯諧振轉換器 、全橋相移轉換器 、零電壓切換技術 |
外文關鍵詞: | Series Resonant Converter, Phase-Shifted Full-Bridge Converter, Zero Voltage Switching |
相關次數: | 點閱:224 下載:21 |
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本論文的主旨在於研製全橋串聯諧振直流/直流轉換器之電源控制IC,所提出的控制策略綜合了全橋串聯諧振轉換器及全橋相移器的特色。在重載的條件下,串聯諧振轉換器由於零電壓切換的功能擁有高效率特性,在輕載條件下用相移操作來提高效率。外部電路加入回授電路中產生閘極控制信號。在重載條件下可調節開關頻率,而在輕載條件之下調節相移。在兩操作模式中間的過渡期,採用一個遲滯的機制,以避免不穩定的問題。
所設計的控制IC模擬分析結果,驗證了是可經過製程和溫度變異。外部元件的開關頻率從 20 kHz至300 kHz為可調節。芯片面積 2.14平方毫米,小巧的尺寸非常適合高功率密度應用。
This thesis focuses on the design of a power control IC for the full-bridge series resonant DC / DC converters. The proposed control strategy combines the characteristics of the full-bridge series resonant converter and full-bridge phase-shifted converter. At heavy load condition, high efficiency performance can be achieved by the studied series resonant converter with zero-voltage-switching features. The phase-shifted operation is used to improve the efficiency performance at light load condition. An external circuit is added into the feedback loop for generating the gating signals. The switching frequency can be modulated at heavy load condition while the phase-shifted gating signals are regulated at light load condition. During the transition between two operating modes, a hysteretic mechanism is adopted to avoid the unstable issue.
The simulation analysis of the designed control IC is verified for process and temperature variations. The switching frequency can be adjusted from 20 kHz to 300 kHz by an external component. The chip area is 2.14 mm2. The compact size is very suitable for high power density applications.
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