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Burn out of TINY IC TNY286PG DIP-8

Posted by: santoshgite on

  

Dear sir ,

   Please find the below sch for my current project as its specification as follows

Input voltage -Universal (85-265V AC)

Output Voltage - 5 V /1A

 During the turn off of supply with loaded my TINY ic gets Burn out , kindly suggest on the same .

 

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Comments

Submitted by PI-Kenobi on 04/18/2016

When you say 'burn out', does the TinySwitch blow? Also, is this behavior consistent?

Yes my Tiny Switch gets Blow ,no this behaviour is not contineous but its happens for 2-3 borad out off 10 Borad .

Submitted by santoshgite on 04/20/2016

Also During the initial turn on process and Power shut down mode . As we already having MOV provision on Board so kindly guide on same issue. 

Submitted by PI-Kenobi on 05/02/2016

1. Look at the drain current waveform. Is the current limit being exceeded during turn-on or turn off, possibly due to core saturation?

2. What is the drain voltage when the drain turns off? Is it higher than the breakdown voltage of the device?