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Original question:

BQ25820: Please recommend a charging chip

BQ25820: Please help recommend a part number with ship mode and support for path management.

Vayne Li
Expert 1030 points
Part Number: BQ25820
Other Parts Discussed in Thread: BQ25798, BQ25750,

Tool/software:

Hi Teams,

Please help recommend a part number with ship mode and support for path management. My client has evaluated the datasheet of BQ25798 and thinks it is not suitable. The charging power meets the requirements 15V@3A ， The input range of 45W is between 5-20V, with PD protocol and requiring buck/boost architecture. Thank you~

  • 0
    TI__Mastermind 33111 points

    Hello Vayne,

    Vayne Li said:
    The input range of 45W is between 5-20V, with PD protocol and requiring buck/boost architecture. Thank you~

    The BQ25820 will not work in this case, since it's a buck-only charger. it may be possible to use BQ25750.

    The BQ25750 does not have a Ship Mode like the BQ25798. This is because the BQ25750 and BQ25798 have different types of powerpath.

    The BQ25750 does have the option to force the BATFET OFF. 

    You can use the BATFET as a SHIPFET. You can set FORCE_BATFET_OFF=1 to get a mode like SHIPMODE on the BQ25798. To remove leakage current from battery to system

    Does that answer your question?

    Best Regards,

    Christian

  • 0 in reply to Christian Moyer
    Expert 1030 points

    Hi Christian,

    Thank you for your recommendation. I am currently in communication with the customer and they are evaluating the datasheet for BQ25798. We will contact you if there are any further issues