• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 64 subscribers
  • Views 239 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.

TIDA-010240: Parallel and sequential charging capabilities

Caleb Weaver
Prodigy 35 points
Part Number: TIDA-010240
Other Parts Discussed in Thread: MSP430FR2475, BQ25731

Reading through the datasheet for this reference design, I notice it specifies that the batteries are discharged in parallel (drawing from the one with higher voltage), but I can't find anything about how it charges the batteries from the DC power. Does this design support both parallel and sequential charging of the smart batteries? If so, is this programmed in the MCU (MSP430FR2475) using the "CHG_interface" signals through the I2C communication? 

  • +1
    TI__Prodigy 660 points

    Hi Caleb,

    This design charges the batteries by using two BQ25731 I2C buck boost battery chargers. Over I2C, the MSP430FR2475 programs the registers in the battery chargers to configure them (as well as the battery gauges).

    In this architecture the batteries can be charged simultaneously or sequentially. 

    Best Regards,

    -Christian