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TPS40210 Vin=19V, Vout=120V, Io=0.5A

KIYOSHI NARISAWA1
Expert 1510 points
Other Parts Discussed in Thread: TPS40210

Dear TI

I'd like to know TPS40210 can work at below condition or not.

Vin=19V, Vout=120V, Io=0.5A

If you have reference design,. please let me know.

Customer is interisting in this device.

Thank you for your cooperations.

K.Narisawa

  

  • 0
    TI__Guru**** 191445 points

    Webench says it can be done to your specification.  There are quite a few reference designs using TPS40210.  I did not see one that exactly meets your requirements.

  • 0 in reply to JohnTucker
    Expert 1510 points

    Hi John-san,

    Thank you for your kindly support always.

    I also checked it out too.

    I'll check customer how marginal do they have for this spec.

    Thank you so much.

    Best Reagrds

    K.Narisawa

     

  • 0 in reply to KIYOSHI NARISAWA1
    TI__Mastermind 35115 points

    For this amount of load current and duty ratio I recommend a flyback topology. The maximum duty cycle of a boost is typically around 90% and the duty cycle needed for a boost topology to support this, not including any losses, is 85%. Once losses are added the duty cycle will increase. 

    The TPS40210 could be used as a flyback for this but as John said there are not any reference designs.

    Do you have some details on the application you could share?

  • 0 in reply to Anthony F
    TI__Mastermind 35115 points

    I looked at this a bit more and the boost topology may work though it is on the edge. Make sure they select a lower switching frequency to extend the off-time as much as possible to keep it above the minimum off-time limitation.

  • 0 in reply to Anthony F
    Expert 1510 points

    Hi Anthony-san,

    Thank you for your response.

    Applicaton is for TV backlight. If customer would like to evaluate, can TI support any EVM with reference design? 

    I'll visit customer tomorrow, if customer is interestisng in this,　maybe they will request EVM.

    Thank you for your advance

     K.Narisawa  

  • 0 in reply to KIYOSHI NARISAWA1
    TI__Guru**** 191445 points

    Typically that will come from design services group.  Since this is TV application I suppose we can expect large volumes.  They will require business case and detailed specifications to create the design.  Are there other power needs that could also be incorporated into the design?  It is ok to have multiple converters and outputs for these designs..