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BQ79600-Q1

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Automotive SPI/UART communication interface functional-safety compliant with automatic host wakeup

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Data sheet

BQ79600-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Features Separate MCU requirement, Stackable (built-in interface) Communication interface Daisy chain, SPI, UART Device type Communication device Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Compliant Operating current (typ) (µA) 2500
Rating Automotive Features Separate MCU requirement, Stackable (built-in interface) Communication interface Daisy chain, SPI, UART Device type Communication device Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Compliant Operating current (typ) (µA) 2500
TSSOP (PW) 16 32 mm² 5 x 6.4
  • Qualified for automotive applications
  • AEC-Q100 Qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Compliant
  • Automatic wake up of BMS/BMU system when fault is detected in ring architecture
  • Support supply from 4.75-V to 40-V
  • UART/SPI Host interface
  • Compatible with 3.3-V/5-V 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
  • Qualified for automotive applications
  • AEC-Q100 Qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Compliant
  • Automatic wake up of BMS/BMU system when fault is detected in ring architecture
  • Support supply from 4.75-V to 40-V
  • UART/SPI Host interface
  • Compatible with 3.3-V/5-V 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

The BQ79600-Q1 is a communication (bridge) IC designed to interface between a microcontroller (MCU) and TI battery monitoring ICs, for example the BQ7961X-Q1. The information from the MCU is translated by the device to signals recognized by TI’s battery management daisy chain protocol, and transmitted out. And signals from daisy chain are decoded to bit stream and then sent back to MCU.

When the MCU and PMIC are in SHUTDOWN/ SLEEP, the BQ79600-Q1 can wake them up if any unmasked fault is detected when using ring architecture.

The BQ79600-Q1 is a communication (bridge) IC designed to interface between a microcontroller (MCU) and TI battery monitoring ICs, for example the BQ7961X-Q1. The information from the MCU is translated by the device to signals recognized by TI’s battery management daisy chain protocol, and transmitted out. And signals from daisy chain are decoded to bit stream and then sent back to MCU.

When the MCU and PMIC are in SHUTDOWN/ SLEEP, the BQ79600-Q1 can wake them up if any unmasked fault is detected when using ring architecture.
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Technical documentation

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Type Title Date
* Data sheet BQ79600-Q1 Automotive SPI/UART Communication Interface with Functional Safety datasheet (Rev. A) 01 Jun 2020
User guide BQ7961x-Q1 Design Recommendations for High Voltage Automotive BMS (Rev. B) PDF | HTML 18 Jun 2025
Application note BQ79600-Q1 Design Recommendations (Rev. A) PDF | HTML 31 Oct 2023
Application note BQ79616-Q1 Daisy Chain Communications PDF | HTML 26 Oct 2023
Application brief Scaling accurate battery management designs across energy storage systems PDF | HTML 20 Oct 2023
Application note BQ79600-Q1 Software Design Reference (Rev. A) PDF | HTML 17 Oct 2023
White paper 유선 통신과 무선 통신 비교 - EV 배터리 관리 (Rev. A) PDF | HTML 15 Jun 2023
White paper Wired vs. Wireless Communications In EV Battery Management (Rev. A) PDF | HTML 06 Jun 2023
User guide BQ79616-Q1 and BQ75614-Q1 Graphical User Interface (GUI) User's Guide 14 Dec 2020
Technical article Enhance thermal management in EVs with autonomous cell balancing PDF | HTML 09 Dec 2020
Technical article Conserve battery power in HEV/EVs with automatic host reverse wakeup PDF | HTML 04 Dec 2020
Functional safety information Functional Safety Considerations in Battery Management for Vehicles 17 Sep 2020
White paper 차량 전기화를 위한 배터리 관리시 기능적 안전성 고려 사항 17 Sep 2020
User guide BQ79600 Bring Up Procedure (Rev. C) PDF | HTML 26 Aug 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

BQ79600EVM — Functional Safety-Compliant SPI/UART to daisy chain bridge interface with automatic host wake-up

The BQ79600EVM is an evaluation module (EVM) for the BQ79600-Q1 device used as bridge IC to interface between a microcontroller (MCU) and the TI battery monitoring ICs (for example, BQ7961X-Q1 and BQ79606A-Q1). The information from the MCU is translated by the device to pulses recognized by TI's (...)
User guide: PDF | HTML
Not available on TI.com
Driver or library

BQ79600-FMEDA — BQ79600 FMEDA file

BQ79600 FMEDA file
Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
  • BQ79600-Q1 — Automotive SPI/UART communication interface functional-safety compliant with automatic host wakeup
Hardware development
Evaluation board
  • BQ79600EVM — Functional Safety-Compliant SPI/UART to daisy chain bridge interface with automatic host wake-up
Request
Driver or library

BQ79600-Q1-DEVELOPMENT — BQ79600-Q1 development files

BQ79600-Q1 development files
Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
  • BQ79600-Q1 — Automotive SPI/UART communication interface functional-safety compliant with automatic host wakeup
Hardware development
Evaluation board
  • BQ79600EVM — Functional Safety-Compliant SPI/UART to daisy chain bridge interface with automatic host wake-up
Request
Driver or library

BQ79600-Q1-EVALUATION — BQ79600-Q1 evaluation files

BQ79600-Q1 evaluation files
Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
  • BQ79600-Q1 — Automotive SPI/UART communication interface functional-safety compliant with automatic host wakeup
Hardware development
Evaluation board
  • BQ79600EVM — Functional Safety-Compliant SPI/UART to daisy chain bridge interface with automatic host wake-up
Request
Driver or library

BQ79600-Q1-FUNCTIONAL-SAFETY-DOCS — BQ79600-Q1 functional safety documents

BQ79600-Q1 functional safety documents
Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
  • BQ79600-Q1 — Automotive SPI/UART communication interface functional-safety compliant with automatic host wakeup
Hardware development
Evaluation board
  • BQ79600EVM — Functional Safety-Compliant SPI/UART to daisy chain bridge interface with automatic host wake-up
Request
Support software

SLVC810 — BQAutoEval GUI 1.0.4

Supported products & hardware

Supported products & hardware

Products
Battery monitors & balancers
  • BQ75614-Q1 — Automotive 16-S precision battery monitor, balancer and integrated protector with ASIL-D compliance
  • BQ79600-Q1 — Automotive SPI/UART communication interface functional-safety compliant with automatic host wakeup
  • BQ79616-Q1 — 16-S automotive precision battery monitor, balancer and integrated protector with ASIL-D compliance
Hardware development
Evaluation board
  • BQ75614EVM-021 — Precision monitor with integrated hardware protector and current sense evaluation module
  • BQ79616EVM-021 — BQ79616 evaluation module for 16-S precision battery monitor, balancer and integrated protector
  • BQ79656EVM-021 — BQ79656-Q1 automotive 16-S precision battery monitor balancer integrated protector evaluation module
Download
Reference designs

TIDA-010253 — Battery control unit reference design for energy storage systems

This reference design is a central controller for a high-voltage Lithium-ion (Li-ion), lithium iron phosphate (LiFePO4) battery rack. This design provides driving circuits for high-voltage relay, communication interfaces, (including RS-485, controller area network (CAN), daisy chain, and Ethernet), (...)
Design guide: PDF
Package Pins CAD symbols, footprints & 3D models
TSSOP (PW) 16 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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