LED驱动电源的抗雷击浪涌设计

Design of lightning surge protection to LED drive power

为确保LED正常工作,防止雷击浪涌干扰,根据雷击浪涌的特性,利用气体放电管、压敏电阻、瞬态抑制二极管等浪涌器件设计了一种适合LED电源的浪涌保护电路,并采用雷击浪涌发生器进行抗扰度实验以测试其抗雷击性能.实验结果表明,本设计能够抗击差模1 kV和共模2 kV的雷击高压,保证LED电源正常工作.

In order to prevent the thunder stroke surge to disturb the LED normal work,a lightning surge protection of LED driver power is designed,which is composed of GDT,MOV and TVS,according to the characteristics of lightning surges.And the lightning surge generator is used to test the protection performance of the circuit.The testing results show that the designed circuit can resist lightning high-voltage of differential mode 1 kV and syntype mode 2 kV,and ensure the normal work of LED power supply.