BQ40Z50-R2: Some questions of valid charge termination

Statham Su

Genius 4990 points

Part Number: BQ40Z50-R2

Hello Sir:

We have some questions of valid charge termination.

After 80s detecting termination current upon terminate voltage, does Pack update SOC to 100% first, then FULLY_CHARGED bit get set and then turn CHG FET OFF?
What is the delay for SOC update to 100% after 80s termination?
What is the delay for FULLY_CHARGED bit set after SOC update to 100%?
What is the delay for CHG FET off after FULLY_CHARGED bit is set?

Please kindly provide your recommendations.

Thanks a lot.

over 1 year ago

0 Anthony over 1 year ago

TI__Mastermind 28450 points

Hi Shutham,

Can you please tell me how you have these parameters configured below?

Regarding the Actions after the conditions of Valid Charge Termination are met, I do not believe there is a specific delay or order that the actions take. These actions should all go into effect immediately after the conditions are met.

Below is more information on how Valid Charge Termination operates:

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1106891/faq-why-does-valid-charge-termination-vct-take-less-or-more-than-80-seconds-to-trigger

Regards,

Anthony Baldino

Power management

Power management forum

BQ40Z50-R2: Some questions of valid charge termination