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Original question:

TPS23755: Reference design for 5V output

TPS23755: For 5V output application

chentsu chung
Mastermind 6180 points
Part Number: TPS23755
Other Parts Discussed in Thread: TPS23758

Hi Team,

Thanks for previous support, here I still got some question:

1. Due to the cost consideration, now can only use TPS23755 for all voltage version PD, than what's the load regulation it should be @5V output?

2. Beside of load regulation, is there any other effect?

Thank you,

C.T.

  • 0
    TI__Mastermind 41760 points

    Hi CT,

    1. If 5V, with the TPS23755, you must consider an opto feedback to get good regulation (less than 1%) otherwise 5V PSR with the TPS23755 could be 10% regulation. Typical 5V applications require at most 5% regulation. 

    2. Efficiency will also be lower.

    I still recommend using the TPS23758 for 5V. Because it will save the cost of having an opto solution and/or an extra POL converter if you need to add a post DCDC for better regulation.

    http://www.ti.com/tool/TPS23758EVM-080