• State TI Thinks Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 3 answers
  • Subscribers 62 subscribers
  • Views 321 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

BQ25895M: External Boost converter in the output of SYS pin

May
Genius 9880 points
Part Number: BQ25895M


Hi Team,

We have a customer planning to use BQ25895M as part on their application. However, if they used PMID pin the device has output of 5V@3.1A  only but they need a  load requirement of 5V @ 6A(max). Can the customer use external Boost converter in the output of SYS pin to have 5V @ 6A  output?

Thank you and looking forward for your reponse.

Regards,

Maynard.

  • 0
    TI__Guru 58961 points

    Maynard,

    Referring to 7.3 Recommended Operating Conditions on the d/s, Isys max is 5A.

    Thanks,

    Ning.

  • 0 in reply to Ning T
    TI__Genius 9880 points

    Hi Ning, 

    Thank you for the information.

    Is it possible that customer can use external boost converter in the SYS pin to achieve the 6A output? If not, do we have such device that can handle this?

    Looking forward for your kind response. Thank you!

    Regards,

    Maynard

  • 0 in reply to May
    TI__Guru 58961 points

    Maynard,

    Isys max is 5A and can’t support any higher current. I’m not aware of any devices which may support your application. Please submit a new e2e for part recommendations.

     

    Thanks,

    Ning.

  • 0 in reply to Ning T
    TI__Genius 9880 points

    Hi Ning,

    Thank you for your kind response. 

    Our customer has additional question. 

    1.What is the recommended Li-ion batteries for this kind of design

    Battery Charge/Discharge
    Input is 5V from USB Type C connector
    Single Cell Li-Ion Battery 3.7V
    Output or Dischage Voltage is 5V (Constant)
    Should have Over Volatge,Over Current and Under Voltage Protection
    Charging current is Max-5A and Discharging current is 8A

    2. Can this design, charge 18650 standard Battery(3.6V Nominal) using BQ25895M.

    Looking forward for your response.

    Regards,

    Maynard

  • 0 in reply to May
    TI__Guru 58961 points

    Maynard,

    1. Please check with Li-ion battery venders.

    2. The device will charge the battery per the charge profile in Fig 13 on the d/s. Please check your battery specs and see if the BQ25895M charge profile fits your battery charging requirements.

    Thanks,

    Ning.