高頻開關電源模塊均流系統的研究

摘要：本文重點研究多個高頻開關電源模塊的并聯運行需要解決的一個關鍵問題，就是負載電流的均分問題。即如果在并聯系統中沒有進行均流電路的硬件設計或軟件設計，則可能出現其中某個或某些電源模塊承擔比較大的負載電流，運行在極限狀態，而有些模塊處于輕載運行，這將導致分擔電流多的模塊熱應力大，致使系統的可靠性降低。詳細討論了均流的幾種控制方法，介紹了最大電流自動均流的均流控制電路仿真結果。 敘詞：均流 并聯 高頻模塊 Abstract：This article focuses on a number of parallel operation of the power modules need to address a key issue is that the current load-sharing problems; that is, if there is no parallel system for both hardware circuit design and software design, which may be a Or some of the power module to bear more of the load current, operating at the limit, and some modules at a light load operation, which will lead to a share of the current multi-module heat stress, resulting in reduced reliability of the system. Here are details on some of the flow control methods and analysis of the test. Keyword：current-sharing parallel high-frequency model