micro controller gets reset

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hi friends,
i have designed multi outpu smps with the help of our pi expert suite 10.2 all outputs working well. but the problem is even i touch the test prod/any metal to any voltage line my microcontroller gets reset(large negative going pulse on 9.1V)
even if tublight is switched on/off same thing happens. when cont actor is on/off from internal relay. the same thing happens continuously.
attaching design file.
please help.

thanks,

첨부 파일Size
TNY275PN.uds1.62 MB