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TPS5420: TPS5420D

Part Number: TPS5420

Dear TI Team,

One of my customer have the issue below:

The point being tested is U22 foot number 8. It can be seen that the pk-pk voltage is unstable and there is a random drop to 26 V

causing a signal drop below 100,000 and high noise of 0.002985. Foot number 7 gets a steady 24V.

 

Please advise what could cause this issue.

Thanks,

Uri