Overview
The BQ79600-Q1, produced by Texas Instruments, is a communication (bridge) IC designed to interface between a microcontroller (MCU) and TI battery monitoring ICs, such as the BQ7961X-Q1. This device translates information from the MCU into signals recognized by TI’s battery management daisy chain protocol and transmits them out, while also decoding signals from the daisy chain and sending them back to the MCU. It is particularly useful in automotive and other high-reliability applications, offering robustness against BCI/EMI/EMC and supporting various battery management systems (BMS).
Key Specifications
| Parameter | Description | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Temperature Range | Ambient operating temperature | -40 | - | 125 | °C |
| BAT Input Voltage | Battery supply input voltage | 4.75 | - | 40 | V |
| VIO Input Voltage | Power supply input for UART/SPI | 3.135 | - | 5.25 | V |
| CVDD Output Voltage | CVDD output voltage (no external load) | 4.9 | 5 | 5.1 | V |
| DVDD Output Voltage | DVDD output voltage (no external load) | 1.75 | 1.8 | 1.85 | V |
| Package Type | TSSOP (16-pin) | - | - | - | - |
| Package Size | 6.6 mm × 5.1 mm | - | - | - | - |
Key Features
- Designed for BCI/EMI/EMC robustness
- Supports BQ7961X-Q1 family, BQ7965X, BQ7963X, and future products
- AEC-Q100 Qualified with device temperature grade 1: –40°C to +125°C
- Functional Safety-Compliant with systematic capability up to ASIL-D and hardware capability up to ASIL-D
- Supports ring architecture with one device and transformer/capacitor isolation
- UART/SPI host interface compatible with 3.3-V/5-V logic
- Isolated differential daisy chain support
- Automatic wake-up of BMS/BMU system when fault is detected in ring architecture
Applications
- Battery Management Systems (BMS)
- Hybrid Electric Vehicles (HEV) and Electric Vehicles (EV)
- Fuel Cell Systems
- Energy Storage Systems
Q & A
- What is the primary function of the BQ79600-Q1?
The BQ79600-Q1 is a communication (bridge) IC designed to interface between a microcontroller (MCU) and TI battery monitoring ICs.
- What temperature range does the BQ79600-Q1 operate in?
The device operates in an ambient temperature range of –40°C to +125°C.
- What is the voltage range for the BAT input?
The BAT input voltage range is from 4.75 V to 40 V.
- Is the BQ79600-Q1 qualified for automotive applications?
- What communication interfaces does the BQ79600-Q1 support?
The device supports UART and SPI host interfaces.
- Can the BQ79600-Q1 wake up the MCU and PMIC from shutdown/sleep mode?
- What type of isolation does the BQ79600-Q1 support?
The device supports transformer/capacitor isolation.
- Is the BQ79600-Q1 compliant with functional safety standards?
- What package type and size does the BQ79600-Q1 come in?
The device comes in a 16-pin TSSOP package with dimensions of 6.6 mm × 5.1 mm.
- What are some common applications of the BQ79600-Q1?
