Overview
The Texas Instruments BQ28Z610-R1 is a highly integrated, accurate, 1-series to 2-series cell gas gauge and protection solution. This device provides autonomous battery charging control and cell balancing, making it an ideal component for managing Li-ion and Li-polymer battery packs. It features a flash programmable custom reduced instruction-set CPU (RISC), safety protection, and authentication, ensuring a comprehensive battery management solution. The BQ28Z610-R1 communicates via an I2C compatible interface and includes an ultra-low-power, high-speed TI BQBMP processor, high-accuracy analog measurement capabilities, integrated flash memory, and various peripheral and communication ports.
Key Specifications
| Specification | Details |
|---|---|
| Package Type | VSON-12 |
| Pins | 12 |
| Operating Temperature Range | -40°C to 85°C |
| Current Sense Resistor | Down to 1-mΩ |
| Current Measurement Capability | Up to 1-mA |
| I2C Bus Frequency | 400 kHz |
| Analog-to-Digital Converters (ADCs) | Two independent ADCs |
| Coulomb Counter Accuracy | Input offset error < 1 µV (typical) |
| Authentication | SHA-1 authentication responder |
Key Features
- Autonomous battery charging control using a dedicated MASTER mode I2C interface
- Cell balancing with an internal bypass to optimize battery health
- High-side protection N-CH FET drive enabling serial bus communication during fault conditions
- Programmable protection levels for voltage, current, and temperature
- Analog front-end with two independent ADCs supporting simultaneous current and voltage sampling
- High-accuracy coulomb counter with input offset error < 1 µV (typical)
- Support for battery trip point (BTP) function for Windows integration
- SHA-1 authentication responder for increased battery pack security
- 400-kHz I2C bus communications interface for high-speed programming and data access
Applications
- Tablet computing
- Portable and wearable health devices
- Portable audio devices, including wireless (Bluetooth) speakers
Q & A
- What is the part number of the highly integrated gas gauge and protection solution for 1-series to 2-series cell Li-ion battery packs?
The part number is BQ28Z610-R1.
- What is the package type of the BQ28Z610-R1?
The package type is VSON-12.
- What is the operating temperature range of the BQ28Z610-R1?
The operating temperature range is -40°C to 85°C.
- What communication interface does the BQ28Z610-R1 use?
The BQ28Z610-R1 uses an I2C compatible interface with a 400-kHz bus frequency.
- What safety features does the BQ28Z610-R1 include?
The BQ28Z610-R1 includes programmable protection levels for voltage, current, and temperature, as well as a high-side protection N-CH FET drive.
- How does the BQ28Z610-R1 optimize battery health?
The BQ28Z610-R1 optimizes battery health through cell balancing with an internal bypass.
- What authentication method does the BQ28Z610-R1 use?
The BQ28Z610-R1 uses a SHA-1 authentication responder for increased battery pack security).
- What is the minimum current sense resistor supported by the BQ28Z610-R1?
The BQ28Z610-R1 supports down to 1-mΩ current sense resistor).
- Does the BQ28Z610-R1 support simultaneous current and voltage sampling?
Yes, the BQ28Z610-R1 supports simultaneous current and voltage sampling through its analog front-end with two independent ADCs).
- What is the accuracy of the coulomb counter in the BQ28Z610-R1?
The coulomb counter has an input offset error of less than 1 µV (typical)).
