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TPS631000: Produces 1V output with Enable at ground.

Larry Ledden
Prodigy 10 points
Part Number: TPS631000

Tool/software:

I am debugging a new design with Vin ranging from 2.5-5V and output set at 4.2V. When enabled, the output is proper, but when Enable = 0V, the output is 1V. This does not seem correct.

Mode input is set high (Vin). FB has 698K to Vout and 91K to Gnd.

  • 0
    TI__Guru 65340 points

    Hello Larry,

    It seems to me that you attached a picture, but this seems not to be visible now. Can you please attach this picture again?

    The output is not actively discharged on this device, so is it possible that your load is discharging the output, but stops the current at 1V?

    Best regards,
    Brigitte