具有均流控制之全數位多相輸出之直流轉換器研製

Design and Implementation of a Multiphase DC-DC Converter with Current-Balancing Control Using DSP

張之安(Chin-An Chang)

指導教授 ： 黃明熙

國立臺北科技大學/電資學院/電機工程系所/碩士(2009年)

https://doi.org/10.6841/NTUT.2009.00334

摘要

本論文主要是以建構多相同步降壓非隔離直流-直流轉換器為主，經由一數位訊號處理器以軟體為核心之數位控制來達成輸出電壓控制與各相間電流均流輸出之目的；另外，亦以自動偵測負載需求，調整使用並聯相數及切換頻率，藉此使系統維持在高效率區並且在相轉換電路發生異常時，可線上重新分配每相模組之輸出電流或啟動備用模組，如此可大幅提高系統之可靠度。
本文先對多相式同步降壓轉換器之架構及動作原理加以闡述，以Microchip dsPIC30F2023 數位信號處理器作為控制核心，以軟體來達成均流控制、負載偵測、效率最佳化與線上模組輸出動態調整之目的。

關鍵字

多相直流轉換器 ； 數位功率控制 ； 均流控制

並列摘要

In the thesis, a software-based digital control using digital signal processor is applied to a multi-phase synchronous buck converter to carry out the task of current-sharing and output voltage control. In addition, the loaded current is automatically monitored in order to adjust the amount of paralleled power stages and the switching frequency of power MOSFET for assuring the converter in highly efficiency. The reliability of converter will be enhanced by redistributing the loaded current to each phase or starting up the backup module when malfunctions occur.
The mechanism of multi-phase synchronous buck converter is explained in first. A DSP(dsPIC30F2023) is the central control unit in use to carry out the tasks of current sharing, monitoring of the loading current, and the setting of the amount of the paralleled power stages.

並列關鍵字

Multi-Phase Buck Converter ； Digital Power Control ； Current-Balancing Control

參考文獻

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