BQ75614-Q1: What coulomb counter accuracy can it achieve if using external MCU + BQ75614-Q1 ?

PYTsai

Genius 11535 points

Part Number: BQ75614-Q1

What coulomb counter accuracy can it achieve if using external MCU + BQ75614-Q1 ?

assume

1. we are doing continuouse conversion for the current sense and the conversion time is set at 1 ms

3. assume we can capture every interrupt from BQ75614 and can precisely doing time integration of the current data.

over 2 years ago

0 Nancy Hidalgo over 2 years ago

TI__Expert 3760 points

Hi,

Good question. Let us look into this and we'll get back to you promptly.

Best,

Nancy

0 Taylor Vogt over 2 years ago in reply to Nancy Hidalgo

TI__Genius 17370 points

Hi PY,

This device does not do typical coulomb counting, it just continuously provides measurements, so it would be up to your MCU side how to handle accumulation. The device also provides ability to see when the measurement is ready to read on a GPIO pin and also allows delaying ADC to synchronize the measurements.

Regards,

Taylor

Power management

Power management forum

BQ75614-Q1: What coulomb counter accuracy can it achieve if using external MCU + BQ75614-Q1 ?