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TPS62135EVM-698: Suggestions for a lower cost input capacitor than the tantalum shown on EVM-698

Bob C
Intellectual 615 points
Part Number: TPS62135EVM-698

Hi,

The TPS62135EVM-698 uses a TPSE686M025R0125 68uF tantalum cap on the input rail.  

This part is very expensive.   Can I get a recommendation on using a lower cost part(s) with similar performance? 

I have used aluminum electrolytic caps in the past on inputs to DC/DC converters.  Another option would be to use three 22 uF, 16V 1210 caps in parallel.  My input rail will be between 5V and 12V. 

Thank you,

Bob

https://www.digikey.com/products/en?keywords=TPSE686M025R0125