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为了增强系统EMC性能,原理图和PCB如何设计?

Other Parts Discussed in Thread: MSP430G2553

用MSP430G2553做了一个控制板,一个TM1640芯片用作显示,两个595用作显示和继电器控制,但就是过不了群脉冲测试,群脉冲一打上去,显示全乱了,触摸按键也不灵光了,一不打,就好了,说是EMC性能不好,

为了增强系统EMC性能,原理图和PCB如何设计?

触摸按键控制器原理图.pdf