【应用】峰值脉冲功耗高达5KW的TVS二极管5.0SMDJ70CA用于光伏逆变器设计，工作温度范围为-65℃~150℃

时间： 2022-12-13 来源：世强

技术问答

逆变器是提供电力的关键组件因此其性能和可靠性对于不间断电源是至关重要的。为整个系统提供电压保护是困难的，特别是高电力线电压的应用。这时，高功率TVS二极管可以提供准确的低电压钳位能力，为整流二极管、电容器和IGBT提供差模保护。

客户在设计光伏逆变器时，需要TVS二极管用于主功率单元升降压电路IGBT的保护。客户需要一款双向TVS，5KW，70V，SMC封装，推荐力特的TVS二极管5.0SMDJ70CA。满足主功率单元中对IGBT保护的需求，反向峰值电压VRWM 70V，最大钳位电压（VC）113V，最大反向漏电流Ir为5A，峰值脉冲功耗高达5000W，浪涌电流承受能力强；ESD防护等级满30kV，静电防护等级强；工作温度范围-65℃~150℃，保证光伏逆变器系统在高温工作环境下的可靠性。

SMAJ5.0CA应用在光伏逆变器中，峰值脉冲功耗高达5KW，浪涌电流承受能力强，工作稳定可靠；ESD防护等级30kV，静电防护电压等级高，增强光伏系统工作寿命使其稳定工作；工作温度范围-65℃~150℃，工作温度范围宽，保证光伏逆变系统在工业环境下工作的可靠性。

图1. 5.0SMDJ70CA在光伏逆变器中的应用

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