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TPS92640: Asking for the TPS9264 schematic design suggestion

SHH
Mastermind 31466 points
Part Number: TPS92640

Hi Sir,

 

My customer would like design TPS92640.

Would you please review schematic and provide recommendation for this?

https://txn.box.com/s/f9vvytqko4fph9kdf8la5crva2mkct2k

Here is the LED drive current.

 

 

BR,

SHH

  • 0
    TI__Mastermind 22745 points

    Hi SHH,

        Could you provide more info for this schematic as below:

        1. What's the supply volatge range?

        2. What's the output LED counts?

        3. What's the inductor specification?

    BR

    Sean

  • 0 in reply to Sean Zhou
    TI__Mastermind 31466 points

    Hi Sean,

    please kindly provide feedback today due customer is waiting for the schematic feedback.

    1. 15V
    2. Customer don’t get LED counts from vender. Customer only get LED current and voltage.

                

    1. Inductor spec.

             

    BR,

    SHH

  • 0 in reply to SHH
    TI__Mastermind 22745 points

    Hi Scott,

         From the customer's schematic, it seems that they have configured the output maximum current is over 25A? Could you help check with the customer about the voltage range for the "IADJ" pin?

         The inductor value is too low, it need a bigger inuctor for such high current appliucation.

    BR

    Sean

  • 0 in reply to Sean Zhou
    TI__Mastermind 31466 points

    Hi Sean,

    Thanks for feedback.

    I will check the IADJ voltage.

    do you have the suggested inductor suggestions? Any tool that can provide estimation for this inductor design?

    BR,

    SHH

  • +1 in reply to SHH
    TI__Genius 13001 points

    Hi SHH,

    Please provide the switching frequency and I'll recommend a proper inductor value to you. 

    Let's keep communication by email. 

    Robin