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BQ24171: BQ24171 VISET standard

Hideki Uehara
Prodigy 150 points
Part Number: BQ24171

Data sheet

In the VISET standard, the measurement condition is described as Rsense = 10mΩ. Is the standard the same when Rsense = 20mΩ?

  • 0
    TI__Mastermind 34415 points

    The equation for calculating max charge current holds for an Rsense of 20 mOhm. However, can you please explain your question in more depth?

    Thanks,

    Mike Emanuel

    Please click "This resolved my issue" button if this post answers your question.

  • 0 in reply to Michael Emanuel35
    Prodigy 150 points
    Hello. Reply.

    8.5 Current regulation of electrical characteristics (high-speed charging) In the VISET item, the measurement condition is RSENSE = 10mΩ and the maximum is 0.8V.
    In order to raise the system this time, to raise the voltage between Vsrp-Vsrn to near 40mV
    I want to design RSENSE around 50mΩ.
    At this time, whether the maximum voltage of VISET is 0.8V or changes
    I posted it to want to know.

    Thank you
  • 0 in reply to Hideki Uehara
    TI__Mastermind 34415 points

    The valid ISET range is up to 0.8 V as stated in the datasheet in section 9.3.2. If you want to use a RSENSE of 50mOhm, your maximum charge current will be 800 mA. This is calculated as 0.8V/20/50mOhm following Equation 2 in section 9.3.2.

    Thanks,

    Mike Emanuel

    Please click "This resolved my issue" button if this post answers your question.