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TPS25762-Q1: TPS25762-Q1:

Abhishek Vijayan
Prodigy 20 points
Part Number: TPS25762-Q1

Is it possible to obtain an output of 20V 3A  using TPS25762-Q1 from 12V 5 A input  through the USB out for powering up a device. If yes please provide the constraints and requirements for the above circuit setup.

  • 0
    TI__Genius 10855 points

    Hi Abhishek,

    Yes, 20V/3A output is possible.  But you'll need some overhead on your input to account for efficiency losses and fault conditions - maybe an extra 10W.

    I suggest reviewing section 7.4 of the TPS25762-Q1 datasheet for recommended components.  A typical application schematic can be found in section 10.4.

    Regards,
    Eric

  • 0 in reply to Eric Hartigan
    Prodigy 20 points

    so you mean I have to provide an input of >70W in order to get an output of 60W?

    Also are different voltage outputs possible through Vbus terminal as given in the table 10.3, like 5V,9V,12V??

  • 0 in reply to Abhishek Vijayan
    TI__Mastermind 18556 points

    Hi Abhishek,

    For the first question, you can use the Figure 10-11 to calculate, for example, if the VIN=12V, and you want to output 20V3A, so the efficiency is about 95%, so the input power should be about 63W, but it only consider our device loss, for the real application, the input power should be bigger.

    For the second question, yes, we can output the 5V, 9V, and 12V(HVDCP), it depends on the handshake process with the being charged device. Thank you.

    Best Regards,

    Kuno