BQ76952: Sampling accuracy of current at the following frequencies

zehu chi

Part Number: BQ76952

Tool/software:

Dear TI engineers:

I have some questions about using BQ76952 to sample the current shown below

If BQ76952 samples the current in the figure above, will it be inaccurate? If inaccurate, is there any way to make it sampling accurately?

I found this description in the user manual: "with one output every 3 ms when the device is operating in NORMAL mode", Does this mean that it is possible to sample the current every 3ms?

Best Regards,

zehu

5 months ago

0 Kian Lin 5 months ago

TI__Expert 4220 points

Hi Zehu,

Thanks for reaching out.

BQ76952 should be able to sense this kind of current accurately.
It is possible to measure current every 1.5ms with FASTADC bit set.
You can also do the V/I synchronized measurement, see 10.4 Synchronized Voltage and Current Measurement in BQ76952 3-Series to 16-Series High Accuracy Battery Monitor and Protector for Li-Ion, Li-Polymer, and LiFePO4 Battery Packs datasheet (Rev. B)

BRs

Kian

Power management

Power management forum

BQ76952: Sampling accuracy of current at the following frequencies