Texas Instruments

BQ7694000DBTR

The BQ7694000DBTR is a highly integrated battery management system (BMS) microcontroller from Texas Instruments (TI) designed for multi-cell lithium-ion (Li-ion) and lithium-polymer (Li-Po) batteries. It is specifically designed to provide precise cell voltage monitoring, current measurement, and protection features for various applications, such as electric vehicles (EVs), energy storage systems (ESS), and portable power systems.

Description:

The BQ7694000DBTR is a system-on-chip (SoC) solution that integrates a high-performance microcontroller, precision analog circuits, and various protection features to manage and protect battery packs. It is available in a 40-pin, 5mm x 7mm, thermally enhanced QFN package.

Features:

1. Cell voltage monitoring: The BQ7694000DBTR can monitor up to 18 series-connected Li-ion or Li-Po cells with high precision (±0.5mV).
2. Current measurement: It features a bidirectional current measurement with a resolution of 1mA and an accuracy of ±5mA.
3. Microcontroller: The device includes a 16-bit RISC CPU with 256 kB of flash memory and 32 kB of SRAM for flexible control and data storage.
4. Communication interfaces: It supports multiple communication protocols, including I2C, SPI, and UART for easy integration with other system components.
5. Protection features: The BMS provides overcharge, over-discharge, overcurrent, short-circuit, and temperature protection for safe operation.
6. Active and passive balancing: The device supports both active and passive cell balancing to maintain cell voltage uniformity and extend battery life.
7. Power path control: It includes power switches for individual cell protection and power management.
8. Programmable alerts: The BMS can generate programmable alerts for various system parameters, such as voltage, current, temperature, and state of charge (SoC).
9. Sleep mode: The BQ7694000DBTR can enter a low-power sleep mode to reduce power consumption during periods of inactivity.
10. Safety features: It is designed to meet various safety standards, including ISO 26262 and IEC 61508.

Applications:

1. Electric vehicles (EVs): The BQ7694000DBTR can be used for managing and protecting the high-voltage battery packs in electric and hybrid vehicles.
2. Energy storage systems (ESS): It is suitable for monitoring and managing battery packs in residential, commercial, and industrial energy storage applications.
3. Portable power systems: The BMS can be used in portable power systems, such as laptops, drones, and power tools, to ensure safe and efficient operation.
4. Uninterruptible power supply (UPS) systems: The BQ7694000DBTR can be used to manage and protect battery packs in UPS systems for backup power applications.
5. Medical devices: It can be used in medical devices that require precise battery management and protection, such as portable defibrillators and patient monitoring systems.

The BQ7694000DBTR is a versatile and highly integrated BMS solution from Texas Instruments that offers a wide range of features and protection options for various battery-powered applications.