• State Resolved
  • Locked Locked
  • Replies 5 replies
  • Subscribers 64 subscribers
  • Views 645 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

About Bq24650 Charger

Sachin G
Intellectual 285 points
Other Parts Discussed in Thread: BQ24650

 Dear Sir ,

 I am planing to use BQ24650 battery charger in my application. i have below mention doubts .

1) What is the significance of CE (Active Low) signal?

2) Where should i connect this CE (Active low ) signal ? in data sheet no connection is present for CE (Active Low) signal??

   Should i connect this signal to ground??

Please clarify??

Regards,

Sachin Ghorse

  • 0
    TI__Expert 8690 points
    Hi Sachin,

    The CE active low (charge enable) function in the schematic is there to disable the charger whenever you provide a high voltage to this NFET gate. The datasheet states that if MPPSET is pulled below 75mV, the charge is disabled. See page 13 on the input voltage regulation section.

    You can use this NFET if you want to control whether the charge is enabled or not by a host or by an external circuit that meets a certain criteria. If you don't need this functionality, you don't have to add it.

    Regards,
    Steven
  • 0 in reply to Steven Bangdiwala
    Intellectual 285 points

    Dear Steven,

    Thank you for your kind and quick reply..

    Got it..!!!!

    We use this signal when use any external circuit like micro-controller or  interfacing with another circuit.

    Regards,

    Sachin Ghorse

  • 0 in reply to Sachin G
    Intellectual 285 points
    Dear Steven ,

    I went through datasheet of bq24650 and found this IC is use constant voltage algorithm for MPPT ( buck input voltage and boost current to mentioned maximum power ).

    Is it possible to configured bq24650 as a SEPIC charger?? If yes please share guidelines and application note .

    Regards,
    Sachin Ghorse
  • 0 in reply to Sachin G
    TI__Expert 8690 points

    Glad I could help Sachin.

  • 0 in reply to Steven Bangdiwala
    TI__Expert 8690 points
    Sachin,

    For the SEPIC charger, you can follow the app note www.ti.com/.../slyt466.pdf which explains how to make the changes.

    Regards,
    Steven