電流模塊交錯并聯(lián)的光纖激光器電源研制

　　提出以4路電流模塊LTM4601并聯(lián)的方式實現(xiàn)低壓大電流輸出的解決方案，其關鍵是并聯(lián)模塊間的均流，設計以4路交錯90°的波形分別同步4路模塊的波形交錯技術實現(xiàn)。設計的獨特之處在于并聯(lián)電源系統(tǒng)輸出電流母線引入電流反饋以實現(xiàn)輸出電流值的控制。基于大電流印刷電路板(PCB)設計得到電源樣機，其實驗結果與設計目標基本相符。實驗得到最大輸出電流達到40 A，電源轉換效率在80%以上，并驗證電源系統(tǒng)的過電壓保護和過電流保護以及強制停機等功能。

　　Abstract:

　　The paper proposed a low voltage and high output current solution by paralleling four current mode modules LTM4601， and balanced the current of each module by interleaving parallel technique， and synchronized each module by four interleaving 90 degree waves. It was special that controlling the value of output current by inserting feedback from output current mother line. Prototype was made based on high current PCB design， and experiment results are basically identical with design target. The max output current was 40A， and convert efficiency was over 80%. The conclusion was verified experimentally， including over voltage protection， over current protection，run control and so on.