• State Resolved
  • Locked Locked
  • Replies 6 replies
  • Answers 2 answers
  • Subscribers 65 subscribers
  • Views 238 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.

Battery Charger IC

MUHAMMED RAFI
Intellectual 265 points
Other Parts Discussed in Thread: TPS561201, BQ25792, GPCCEDV, BQ4050, BQ34110

Hi TI Expert,

I am trying to find an Battery  charger IC with two outputs design specifications.

Input: 15volt,2A rated DC output from SMPS.

Output 1:An uninterrupted power supply system with System output of 5V,500milliAmp.

Output 2:12.6Volt, 20AH 3-Cell Li-ion battery backup for system load with a charging current 2Amperes.

Battery charging IC also provides,

  1.  I2c communication with Host.
  2. Also battery charger IC can Support Integration With  Battery Fuel gauge IC and Protection IC(protection for over discharge of battery).

Thank you

  • +1
    TI__Guru*** 143910 points

    HI Muhammed,

    TI does not have a dual output charger at that power level.  For output 2, I recommend BQ25792.  For output 1, I recommend adding a dc/dc converter like TPS561201 connected to the SYS output of BQ25792. I will forward to TI gauge team for a gauge recommendation.

    Regards,

    Jeff

  • 0
    TI__Guru* 77303 points

    Hi Muhammed,

    Can you specify what your requirements are for gauging and protection? It might be better to create a separate thread to avoid confusion since this would be answered by a different team of experts.

    Best regards,

    Matt

  • 0 in reply to Matt Sunna
    Intellectual 265 points

    Hi Matt,

    We are using battery as a backup power supply for a  load if the main grid supply fails. so,battery is rarely discharged in nature.

    our requirements in gauging are to monitor state of charge(SOC),Number of cycles of battery completed,Time to empty,and state of Health.

    Our requirements in protection of battery are under voltage(over discharge voltage protection), over charging voltage of battery protection, battery over charging current protection and battery over discharging current protection.

    please suggest a suitable gauging IC and protection IC with satisfying above specification and those IC's is it  possible to configure with a battery charging IC BQ25792.

    Thank you

    Regards, 

    Muhammed Rafi C K 

  • 0 in reply to MUHAMMED RAFI
    TI__Guru** 102395 points

    Hello,

    Sorry for the late response.

    The bq4050 would probably be the best choice for your application of being rarely discharged. The CEDV as protection features and gauging. It is a CEDV based gauge so you will need to complete the GPCCEDV process, and you may need to cycle the batteries periodically so the gauge can learn the FCC again.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Intellectual 265 points

    Dear wyatt keller,

    I have two questions,

    1)I selected bq34110 as my battery gauage for the rarely discharged nature of battery due to back up power supply application and the battery is a pack with seies and parallel combination. Is it as there any issue will be there if selecting bq34110  instead of bq4050.

    2)We need a protection IC for over discharge current protection which IC is configurable with BQ34110 ic.

    Thank you 

    Regards, 

    Muhammed Rafi C K  

  • 0 in reply to MUHAMMED RAFI
    TI__Guru** 102395 points

    Hello,

    The bq4050 incorporates protections as well, bq34110 is only a gauge. The bq4050 can be configured for 1-4S with as many parallel cells as within the design capacity flash range.

    You could use a monitor to implement some protections as well,

    Sincerely,

    Wyatt Keller