TPD4E002: What cause TPD4E002 broken?

Expert 4955 points

Eggsy Pang

Replies: 3

Views: 185

Part Number: TPD4E002

Hi team,

       My customer used TPD4E002 on their 485 interface for ESD protection. The EE is motor driver Encoder.

They found 10 pcs TPD4E002 broken after product 1000 boards and working. TPD4E002 broken is meaning that the IO pin close short to GND.

I guessed there are two reasons causing this problem.

1. TPD4E002 Peak power P(Surge) is no enough.  

2. When Encoder working, it close to motor running and temp is hot. Too hot to let TPD4E002 broken.

DO you think two reason which one more make sense?

And do you have other suggestions?

Thanks!

• TPD4E002

Expert 4955 points

Eggsy Pang

• Apr 18, 2019 5:47 AM
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3 Replies

• Genius 12410 points

  

  Cameron Phillips

  

  • Apr 18, 2019 5:14 PM

  Hello,

  You said this device was on an RS485 signal? How high was the signal voltage?

  Regards,

  Cameron Phillips
  Applications | c-phillips@ti.com
  High Side Switches/ESD & Surge Protection
  
  

  If this answers your query, Please click "This resolved my issue" button.

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• Expert 4955 points

  

  Eggsy Pang

  

  • Apr 19, 2019 3:03 AM

  In reply to Cameron Phillips:

  Hi Phillips,

  the voltage is from 1V to 5V.

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• Genius 12410 points

  

  Cameron Phillips

  

  • Apr 22, 2019 3:33 PM

  In reply to Eggsy Pang:

  Are you stressing the part or is it just dying in normal operation?
  Are you running an ESD test or surge test?

  Regards,

  Cameron Phillips
  Applications | c-phillips@ti.com
  High Side Switches/ESD & Surge Protection
  
  

  If this answers your query, Please click "This resolved my issue" button.

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