• State TI Thinks Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 2 answers
  • Subscribers 63 subscribers
  • Views 129 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.

Original question:

BQ24610EVM: Powering up the BQ24610EVM

BQ24610EVM: BQ24610EVM

Tee David
Prodigy 60 points
Part Number: BQ24610EVM

Tool/software:

Hello,

I just received the Evaluation board for BQ24610EVM, and I am about to test it. I am planning to connect a DC supply up to 24V DC to Power supply #1 but I realized the port is labelled ACPWR. I wanted to ask if it is ok to connect a DC input to this port. Also, I am not planning to connect Load #2 and Power supply #2, Can i just connect a single cell 4.2V li-ion cell to Load #2?

P.S I am planning to design a single cell 4.2V lithium-ion cell charger with the chip. My charging current will be 10A and charging voltage 4.2V, input voltage to the circuit will be 24VDC. I am not going utilize the system feature so BATDRV will be floated.

Looking forward to hearing from you.

Regards,

Tee

  • 0
    TI__Mastermind 31976 points

    Hello Tee,

    Tee David said:
    I just received the Evaluation board for BQ24610EVM, and I am about to test it. I am planning to connect a DC supply up to 24V DC to Power supply #1 but I realized the port is labelled ACPWR. I wanted to ask if it is ok to connect a DC input to this port.

    Yes, This needs to be DC power supply. The labeling is a little confusing, but this should be DC not AC. I'm sorry for the confusion.

    Tee David said:
    Also, I am not planning to connect Load #2 and Power supply #2, Can i just connect a single cell 4.2V li-ion cell to Load #2?

    You will need to change the VFB voltage divder to support 4.2V battery. If your battery does not have a thermistor, you will need to connect a 10kohm resistor between TS and PGND.

    Tee David said:
    P.S I am planning to design a single cell 4.2V lithium-ion cell charger with the chip. My charging current will be 10A and charging voltage 4.2V, input voltage to the circuit will be 24VDC. I am not going utilize the system feature so BATDRV will be floated.

    Yes, if SYS load is not needed, BATDRV can be left floating.

    Best Regards,

    Christian.

  • 0 in reply to Christian Moyer
    Prodigy 60 points

    Hi Christian,

    Thanks for your swift response. For the purpose of testing the evaluation board, is there a flexibility in the suggested equipment or not? can some parts of the circuit be left not connected? I noticed there is a suggestion to set power supply #1 to 0V ± 100mVDC, 5.0 ± 0.1A and power supply #2 to 0V ± 100mVDC, 1.0 ± 0.1A, why are we doing this?

    Regards,

    Tee

  • 0 in reply to Tee David
    TI__Mastermind 31976 points

    Hello Tee,

    Tee David said:
    I noticed there is a suggestion to set power supply #1 to 0V ± 100mVDC, 5.0 ± 0.1A and power supply #2 to 0V ± 100mVDC, 1.0 ± 0.1A, why are we doing this?

    This is just a functionality check. it's explained in AC Adapter detection treshold section.

    Tee David said:
    Thanks for your swift response. For the purpose of testing the evaluation board, is there a flexibility in the suggested equipment or not? can some parts of the circuit be left not connected

    Yes, all you need is input supply, battery, and 10kohm resistor for TS to gnd connection. Make sure to change resistor divder, to support 4.2V battery regulation.