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Hi xyz9915,

C4,C5 should be low ESR type. To measure ESR, you may have an ESR meter or you can find out from the manufacturer's website according to the series number. Calculation is difficult and not practical. I have collected ESR meter from EVB company of Portugal. It costs 50 Euro and it is giving excellent service.

A probable problem in your circuit is that, you have not used an inductor at the input. Please use this. If you use inductor, higher ESR caps will also withstand for some time and may not be destroyed immediately.

In your circuit, R15 is not required.

Thanks.
 
Hi xyz9915,

I have attached the picture of my ESR meter.

Thanks.
 

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