Overview
The Texas Instruments BQ79616-Q1 is a 16-series automotive precision battery monitor, balancer, and integrated protector designed for high-voltage battery management systems in hybrid electric vehicles (HEVs) and electric vehicles (EVs). This device is AEC-Q100 qualified and complies with the highest safety standards, including ASIL-D for functional safety. It offers high-accuracy cell voltage measurements, internal cell balancing, and advanced communication interfaces, making it a robust solution for automotive battery management.
Key Specifications
| Parameter | Specification |
|---|---|
| Number of Cell Channels | 16 |
| ADC Accuracy | ±1.5 mV |
| Measurement Time | Less than 128 µs for all cell channels |
| Operating Temperature Range | -40°C to +125°C |
| ESD Classification | HBM Level 2, CDM Level C4B |
| Functional Safety Compliance | ASIL-D compliant |
| Balancing Current | 240 mA |
| Communication Interface | UART, SPI, Isolated Differential Daisy Chain |
| Package Type | HTQFP-64 (10x10) |
Key Features
- High-accuracy cell voltage measurements within 128 µs for all cell channels.
- Integrated post-ADC configurable digital low-pass filters for filtered, DC-like voltage measurements.
- Supports internal cell balancing with a balancing current of 240 mA and built-in thermal management.
- Isolated differential daisy chain communication with optional ring architecture.
- Embedded fault signal and heartbeat through communication line.
- UART/SPI host interface and communication bridge device BQ79600.
- Built-in SPI master and host-controlled hardware reset.
- Eight GPIOs or auxiliary inputs for external thermistor measurements.
- Supports bus bar connection and measurement.
Applications
The BQ79616-Q1 is specifically designed for high-voltage battery management systems in hybrid electric vehicles (HEVs) and electric vehicles (EVs). It is also suitable for energy storage systems (ESS) and other automotive applications requiring precise battery monitoring and balancing.
Q & A
- What is the primary function of the BQ79616-Q1?
The primary function of the BQ79616-Q1 is to serve as a 16-series automotive precision battery monitor, balancer, and integrated protector.
- What is the ADC accuracy of the BQ79616-Q1?
The ADC accuracy of the BQ79616-Q1 is ±1.5 mV.
- How quickly can the BQ79616-Q1 measure cell voltages?
The BQ79616-Q1 can measure cell voltages in less than 128 µs for all cell channels.
- What is the operating temperature range of the BQ79616-Q1?
The operating temperature range of the BQ79616-Q1 is -40°C to +125°C.
- Is the BQ79616-Q1 compliant with any specific safety standards?
Yes, the BQ79616-Q1 is ASIL-D compliant and AEC-Q100 qualified.
- What communication interfaces does the BQ79616-Q1 support?
The BQ79616-Q1 supports UART, SPI, and isolated differential daisy chain communication interfaces.
- Does the BQ79616-Q1 support internal cell balancing?
Yes, the BQ79616-Q1 supports internal cell balancing with a balancing current of 240 mA and built-in thermal management.
- Can the BQ79616-Q1 be used in ring architecture communication?
Yes, the BQ79616-Q1's daisy-chain communication interface is configurable to a ring architecture.
- What package type does the BQ79616-Q1 come in?
The BQ79616-Q1 comes in a HTQFP-64 (10x10) package.
- Are there any additional inputs available on the BQ79616-Q1?
Yes, the BQ79616-Q1 includes eight GPIOs or auxiliary inputs that can be used for external thermistor measurements.
