臺灣博碩士論文加值系統

誌 謝i
摘 要ii
Abstractiii
圖 目 錄vi
表 目 錄viii
第一章　緒論 1
1.1 研究背景1
1.2 降壓轉換器的介紹1
1.3 研究動機3
第二章 電源IC使用取樣保持系統的恆定導通時間控制直流對直流降壓轉換器介紹4
2.1 能隙參考電壓電路(Bandgap Reference Voltage) 5
2.2 PTAT電流生成電路(PTAT Current) 6
2.3 啟動電路控制(Enable Block) 7
2.4 恆定導通時間控制(Constant On-Time) 8
2.5 設定導通時間(RTON Selection) 9
2.6 最小截止時間控制(Minimum Off-Time) 10
2.7 低側過流保護機制(Low Side OCP Mechanism) 11
2.8 過電壓及低電壓保護機制(OVP&UVP Mechanism) 13
2.9 緩啟動電路(Soft Start Circuit) 13
2.10 輸出電源良好偵測功能(Power Good Function) 14
2.11 零電流偵測功能(Zero Current Detection) 15
2.12 高壓電位轉換和驅動器(HV Level Shift and Driver) 16
2.13 過電壓改善(Overshoot Voltage Improvement) 18
2.14 取樣和保持功能的谷值電流檢測(Valley current sensing with Sample and Hold) 18
第三章 改善暫態響應電路提出與實現 22
3.1 過衝問題的改善(Improvement of overshoot problem) 22
表 3-1 過衝改善功能開啟與未開啟峰對峰值 23
3.2 過衝改善功能操作步驟(Overshoot improvement function operation step ) 23
3.3 改善OHI功能(Improve OHI function) 25
第四章 研究成果 27
4.1 研究成果 (Research results) 27
表 4-1 與現有降壓穩壓器的效能比較表 31
第五章 結論與未來研究方向 32
5.1 結論 (Conclusions) 32
5.2 未來研究方向 (Future Work) 32
參考文獻 33

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