BQ25756: Efficiency curve for 3s configuration

Please let me know exactly what input and output voltages and currents you are looking for and I will try to find the efficiency curves closest to that.

Hi Utsav,

VIN is either +24V or +15V, VOUT is 12.6V for a 3sXp Li-Ion battery.  Current is around 6A.

Thanks,

Michael

Thanks, I will let you know soon if we have any data close to that

Hi Utsav,

Were you able to find the efficiency data?

Thanks,

Michael

Hi Michael, I have been quite busy. I will get back to you very soon.

Hi Utsav,

Thank you for this. Do you have any data with VIN in the 15V to 24V range? Or is this the closest?

Thanks,

Michael

Utsav,

Would you be able to take those measurements?

Thanks,

Michael

Ethan,

This is fantastic, thanks so much! 

One final request: would it be possible to get efficiency measurements at 1mA system current (charging not occurring in this scenario)? The product would be in a low power state and we want to know the efficiency.

Thanks,

Michael

Hello Michael,

Your welcome!

Are you referring to reverse mode for the 1mA system current? What would be the system voltage?

Best Regards,
Ethan Galloway

Hi Ethan,

I mean a 1mA load from the system, so still in a forward mode. Same VIN/VOUT as the previous measurements (15V-24Vin, 12Vout). So same setup as the others essentially, just down to 1mA current.

Thanks,

Michael

Hello Michael,

In this scenario, I assume EN_TERM=0? We normally don't measure efficiency with the load this low. I'll get back to you on Tuesday and see what we have.

If EN_TERM=1, the charger will reach the battery charge voltage and terminate.

Best Regards,
Ethan Galloway

Hello Michael,

I've been very busy this week. I'll try to get back to you before Friday if that works for you.

Best Regards,
Ethan Galloway

Hi Ethan,

Any luck with this?

Thanks,

Michael