• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 62 subscribers
  • Views 214 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.

BQ24195: BQ24195RGER

Navy Gupta
Prodigy 30 points
Part Number: BQ24195


Tool/software:

We are using MPN# BQ24195RGER in one of our project and we performed the thermal simulation. We have a requirement of operating temperature range up to 65°C.

  • As per thermal simulation results the IC temperature will be rising to 127°C at ambient 45°C and as per datasheet, the thermal regulation reduces charge current when the junction temperature exceeds 120°C (programmable).
  • We have performed the thermal testing on EVM of BQ24195RGER, and the IC temperature rises to 65.8°C at 45 °C ambient.

 

Hence the temperature of EVM has a delta of ~62°C with the board having BQ24195RGER IC.

  • 0
    TI__Guru* 76736 points

    Hello

    Can you describe the operating condition of BQ24195 used for EVM test and thermal simulation?

  • 0 in reply to Bill Johns
    Prodigy 30 points

    Hi Bill, 

    We are using BQ24195RGER IC in our design and we have performed the thermal simulation. According to thermal simulation results the IC temperature is rising to 127°C at 45°C ambient. Which seems to be on higher side. 
    To evaluate we have performed the thermal testing on EVM board by keeping it in thermal chamber at 45°C ambient temperature. 

    We are observing the temperature by thermocouple on top of Charger IC in evm and the max temperature was 65.8°C at 45°C ambient. 

    Operating temperature requirement for the device is 0°C to 45°C when the battery is charging. 
    As per datasheet, the thermal regulation reduces charge current when the junction temperature exceeds 120°C (programmable), if the temperature will be 127°C then the charge current will be reduced. 

  • 0 in reply to Navy Gupta
    TI__Guru* 76736 points

    Hi Navy

    For your calculations and test:

    1.) Input voltage?

    2.) System Load?

    3.) Battery charge voltage and current?