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TPS53819A: TPS53819A design recheck.

Chen Bogey8
Mastermind 9990 points
Part Number: TPS53819A
Other Parts Discussed in Thread: TPS53819

Hi Sir 

I am double check TPS53819 circuit for my customer, i find my customer Ven is not high another.

i compare with DS, the DS recommend input capacitor and output capacitor is parallel(100u//100uf//100uf) , but my customer direct use 270uF to replace. 

is it will have impact?

and may you have some suggestion to us if we have no notice in our circuit?

  • 0
    TI__Expert 5900 points
    Chen,
    It seems like the EN pin is connected to the VREG_5V_2. In this case the resistor divider needs to be changed so that there is >1.8V at EN pin. Currently it is less than 1.8V. It is okay to use 1 x 270uF instead of the parallel 100uF caps at input.

    Mathew