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Texas Instruments BQ79600-Q1 Automotive SPI/UART Comm Interface

Texas Instruments BQ79600-Q1 Automotive SPI/UART Communication Interface is designed to interface between a microcontroller (MCU) and TI battery monitoring ICs. The device’s MCU data is translated to signals recognized by TI’s battery management daisy chain protocol and then transmitted. Furthermore, signals from the daisy chain are decoded to the bitstream and then sent back to MCU.

The TI BQ79600-Q1 Automotive SPI/UART Communication Interface wakes the MCU and PMIC in SHUTDOWN/SLEEP mode if any unmasked fault is detected using ring architecture.

Features

Qualified for automotive applications
AEC-Q100 Qualified with the following results:
- Device temperature grade 1 of –40°C to +125°C ambient operating temperature range
- Device HBM ESD classification level 2
- Device CDM ESD classification level C4B
Functional Safety-Compliant
- Developed for functional safety applications
- Documentation available to aid the ISO 26262 system design
  - Safety Manual
  - Functional Safety Analysis Report
- Systematic capability up to ASIL-D
- Hardware capability up to ASIL-D

Automatic wake up of BMS/BMU system when a fault is detected in a ring architecture
Support supply from 4.75V to 40V
UART/SPI Host interface
Compatible with 3.3V/5V logic
Isolated differential daisy chain
- Support ring architecture with one device
- Support transformer/ capacitor isolation
Designed for BCI/EMI/EMC robustness
Supports BQ7961X-Q1 family, BQ7965X, BQ7963X, and future products

Applications

Battery management system (BMS)
Other HEV/EV

Fuel cell
Energy storage

Texas Instruments BQ79600-Q1 Automotive SPI/UART Comm Interface

Features

Applications

Simplified System Diagram

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