一種TR組件多路隔離電源加電順序控制電路
電子技術應用
王正之,許娟,董碩,羅雨,陳輝
上海航天電子技術研究所
摘要: 相控陣雷達天線中的TR組件的多路直流電源需具備嚴格的加電順序,用以防止閂鎖效應,避免邏輯電路未初始化時高壓誤觸發。針對TR組件中常用+28 V、+5 V、-5 V三種獨立不共地電源上電順序的工程需求,提出了一種基于三端穩壓器TL431和光耦隔離的分級控制電路。通過光耦實現非共地電源間的電氣隔離,結合TL431的門限保護電路,精確控制各電壓的加電時序;并具備低成本、易擴展的優勢,是解決多路獨立電源供電設備加電順序的有效途徑,為工業設備的多電壓供電設計提供了可靠參考。
中圖分類號:TN86 文獻標志碼:A DOI: 10.16157/j.issn.0258-7998.256478
中文引用格式: 王正之,許娟,董碩,等. 一種TR組件多路隔離電源加電順序控制電路[J]. 電子技術應用,2025,51(8):132-135.
英文引用格式: Wang Zhengzhi,Xu Juan,Dong Shuo,et al. A power-on sequence control circuit for multi-channel isolated power supplies in TR modules[J]. Application of Electronic Technique,2025,51(8):132-135.
中文引用格式: 王正之,許娟,董碩,等. 一種TR組件多路隔離電源加電順序控制電路[J]. 電子技術應用,2025,51(8):132-135.
英文引用格式: Wang Zhengzhi,Xu Juan,Dong Shuo,et al. A power-on sequence control circuit for multi-channel isolated power supplies in TR modules[J]. Application of Electronic Technique,2025,51(8):132-135.
A power-on sequence control circuit for multi-channel isolated power supplies in TR modules
Wang Zhengzhi,Xu Juan,Dong Shuo,Luo Yu,Chen Hui
Shanghai Institute of Aerospace Electronics Technology
Abstract: The multi-channel DC power supplies for TR modules in phased array radar antennas require strict power-on sequencing to prevent latch-up effects and avoid high-voltage false triggering when logic circuits are not initialized. Addressing the engineering requirements for power-on sequence control of three commonly used independent non-common-ground power supplies (+28 V, +5 V, -5 V) in TR modules, this paper proposes a hierarchical control circuit based on the three-terminal voltage regulator TL431 and optocoupler isolation. The circuit achieves electrical isolation between non-common-ground power supplies through optocouplers and precisely controls the power-on timing sequence of each voltage by integrating TL431-based threshold protection circuitry. Featuring low-cost implementation and easy scalability, this solution provides an effective approach to managing power-on sequences in multi-channel independent power supply systems. It offers reliable design references for industrial equipment requiring multi-voltage power supply configurations.
Key words : multi-channel DC power supplies;power-on sequence control;transmit/receive module;isolation
引言
TR組件(Transmit/Receive Module)作為現代射頻系統的核心單元,集成了發射通道與接收通道功能模塊,包括功率放大器(PA)、低噪聲放大器(LNA)、射頻開關及移相器等關鍵電路,廣泛應用于相控陣雷達天線、衛星通信及電子對抗系統等領域。文獻[1-3]指出在高頻信號處理場景下,其電源管理面臨嚴峻挑戰:一方面,發射通道與接收通道需獨立配置多種電壓(如-5 V邏輯偏置、+5 V數字控制及+28 V高壓供電),以滿足不同功能模塊的電氣特性需求;另一方面,因模塊間存在敏感器件(如多功能波控芯片、低噪聲放大器等),電源上電順序的嚴格性成為系統可靠性的關鍵制約因素。若未遵循“負壓優先、低壓次之、高壓滯后”的時序策略,器件閂鎖效應或瞬態電流沖擊可能導致電路功能異常甚至永久性損壞。然而,現有基于共地電源的時序控制方案難以適配TR組件中獨立不共地的多電壓系統,且專用電源管理芯片存在成本高、靈活性不足等問題[3-5]。本文基于可編程精密并聯穩壓器(TL431)和光耦隔離的分級控制電路,提出一種低成本、高可靠的分級上電控制方法,旨在解決非共地多電源系統的時序協同難題,為TR組件的安全供電設計提供理論依據與工程實踐參考。
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作者信息:
王正之,許娟,董碩,羅雨,陳輝
(上海航天電子技術研究所,上海 201100)
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