BQ76952: the error range of temperature sampling for BQ76952

liu billy

Part Number: BQ76952

Tool/software:

Dear

I have a few questions about BQ76952 that I would like to ask.
What is the error range of temperature sampling for BQ76952?
2. The SPI communication method of BQ76952 is rather unique, requiring a lot of read and write operations. May I ask if other companies mostly use analog SPI to communicate with the front end or use hardware SPI+DMA to communicate with the front end?
3. Is there a demo program for communication between IIC and the front end?

2 months ago

0 Arelis Guerrero 2 months ago

TI__Expert 5645 points

Hi,

The thermal accuracy are on the datasheet 7.22 Internal Temperature Sensor and 7.23 Thermistor Measurement on the E/C table. Please refer to the same (https://www.ti.com/lit/ds/symlink/bq76952.pdf).
Most companies are using the I2C protocol. The device was designed to work mostly with I2C, and SPI was a secondary addition, that's the reason behind its uniqueness. We recommend using I2C, but we do some companies that use SPI and manage the particularity of the protocol on their FW.
There's an MCU sample code (using I2C) on the product page. (https://www.ti.com/tool/download/SLUC701). In addition, you can refer to the software development guide app note for some examples. (https://www.ti.com/lit/an/sluaa11b/sluaa11b.pdf)

Regards,

Arelis G. Guerrero

Power management

Power management forum

BQ76952: the error range of temperature sampling for BQ76952