This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ24753: Current Requirement of BQ24753

Part Number: BQ24753

Hi Team,

I am making a power budget for my board and I am using BQ24753 part in it , I am bit confused about how to put the current required for this IC can you please suggest.

this for power estimation. I have attached power budget sheet FYR.Power_Budget.xlsx

Regards,

Karthik

  • According to BQ24753A datasheet, the quiescent current is 1.5mA at charge disable.

    At charge enable, we should add the switching FET gate drive current. The switching frequency is 300kHz. The gate drive current is

    (Qg_top+Qg_bottom) * fs

    The Qg is is related the switching FET that you pick.

  • Hi Wang Li,
    Thank you for your reply , I am bit confused in the working of this IC , like how the PVCC is given and IC turns ON ?
    Because the ACFET is turned ON when ACDRV is obtained and this is when Adapter is detected, to happen this operation PVCC should be present I dont konw how is it happening because the gates are off
    Can explain me the operation how this works and how IC is turned ON?
    Am not able understand only this initial part , like how PVCC get power according to the reference design, Please suggest?
    Regards,
    Karthik
  • Q1 has body diode to pass the input voltage to PVCC.

  • Thank you for kind support