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tps65110 charge pump

Adam Szewczyk1
Prodigy 20 points

what is the input current required to run this charge pump?

what is quiescent current?

  • 0
    Mastermind 7395 points

    The input current will depend of the current you take from each output, and the efficiency for each output.

    The quiescent current appears in the datasheet, 50uA typ.

  • 0 in reply to Avi Chami1
    Prodigy 20 points

    I know that quiescent current appears in the datasheet. but what it is?  Is it the input current required for charge pump to work?

    Does the input current has to exceed the output current for charge pump to work?

    Does the charge pump builds up voltage only or voltage and current?

  • 0 in reply to Adam Szewczyk1
    Mastermind 7395 points

    Regarding quiescent current, it is the current consumed by the internal parts of the power supply EVEN if you don't have no load at all.

    The power supply makes a conversion. In the conversion the output power = input power - losses, or output power = input power * efficiency, where the eff. is always a number <= 1.

    So the input current = (output voltage * output current) / (eff. * input voltage)

    You have to repeat the calculation for each output voltage, the total input current will be the sum of three calculated input curr., one for each voltage.