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BQ24773: Schematic review.

KIM Andy
Expert 2530 points
Part Number: BQ24773

HI

My current customer is trying to develop 4S4P Lithium Battery Charger with BQ24773.

The circuit configuration was based on EVM.

I have the following questions in the following circuit configuration.

1. Connection part of PROCHOT
2. The part where C114 is not connected symmetrically with SRP part in SRN.

Could you review the attached circuit one more time?

Can you tell us what you need to be aware of when reviewing the circuit?

4S4P_CHARGER_0218.pdf

  • 0
    TI__Genius 16185 points

    Hi

    Based on your question, below is my response

    1: PROCHOT is used for notebook PC application and this pin should connected to Intel/AMD CPU. But if your application is not, maybe you don't need to use this pin.

    2. From our EVM board circuit, I also didn't see C114, so I think you can remove this cap from your schematic. And draw C110 closed to Q104

    Due to you follow up EVM board to create your circuit, so I think it should be ok. But I think there are some circuit maybe not necessary, so could you advise what kind of application you design? And does your battery is removable or not? what is your adaptor voltage?

    Thank you and Regards

  • 0 in reply to Paul Yeh
    TI__Genius 16185 points
    Hi there,
    We haven’t heard back from you. We are assuming you were able to resolve your issue. If not, just post a reply below or create a new thread if the thread has locked due to time-out.
    Regards,