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BQ76925RGET
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BQ76925RGET

Product Overview

Category

BQ76925RGET belongs to the category of integrated circuits (ICs) used in battery management systems.

Use

This IC is specifically designed for monitoring and protecting lithium-ion and lithium-polymer battery packs.

Characteristics

  • High accuracy voltage and temperature monitoring
  • Overvoltage, undervoltage, and overtemperature protection
  • Balancing control for individual cells
  • Communication interface for system integration
  • Low power consumption

Package

BQ76925RGET is available in a small 24-pin QFN package, which ensures efficient heat dissipation and compact design.

Essence

The essence of BQ76925RGET lies in its ability to accurately monitor and protect battery packs, ensuring their safe and efficient operation.

Packaging/Quantity

This IC is typically sold in reels containing a quantity of 250 units per reel.

Specifications

  • Operating Voltage Range: 2.7V to 28V
  • Cell Voltage Measurement Range: 0V to 5V
  • Temperature Measurement Range: -40°C to +125°C
  • Communication Interface: I2C
  • Balancing Current: Up to 100mA per cell
  • Power Consumption: Less than 10µA in sleep mode

Detailed Pin Configuration

  1. VDD: Power supply input
  2. GND: Ground reference
  3. SDA: I2C data line
  4. SCL: I2C clock line
  5. ALERT: Interrupt output
  6. BAT: Battery pack positive terminal
  7. VCxP: Positive terminal of cell x
  8. VCxN: Negative terminal of cell x
  9. CBAT: Capacitor connection for external balancing
  10. VSS: Negative terminal of external balancing resistor
  11. VREF: Reference voltage output
  12. VSS: Negative terminal of external balancing resistor
  13. VCxP: Positive terminal of cell x
  14. VCxN: Negative terminal of cell x
  15. CBAT: Capacitor connection for external balancing
  16. VSS: Negative terminal of external balancing resistor
  17. VREF: Reference voltage output
  18. VSS: Negative terminal of external balancing resistor
  19. VCxP: Positive terminal of cell x
  20. VCxN: Negative terminal of cell x
  21. CBAT: Capacitor connection for external balancing
  22. VSS: Negative terminal of external balancing resistor
  23. VREF: Reference voltage output
  24. VSS: Negative terminal of external balancing resistor

Functional Features

  1. Voltage Monitoring: BQ76925RGET accurately measures the voltage of each cell in a battery pack, ensuring optimal performance and preventing overvoltage or undervoltage conditions.
  2. Temperature Monitoring: The IC monitors the temperature of the battery pack, enabling thermal protection and preventing overheating.
  3. Balancing Control: It provides balancing control to equalize the charge levels of individual cells, maximizing the overall capacity and lifespan of the battery pack.
  4. Communication Interface: BQ76925RGET features an I2C interface, allowing seamless integration with other system components for data exchange and control.
  5. Low Power Consumption: With its low power consumption, the IC minimizes energy loss and extends the battery life.

Advantages and Disadvantages

Advantages

  • High accuracy monitoring ensures safe battery operation
  • Balancing control enhances battery pack performance and longevity
  • Compact package enables space-efficient designs
  • Low power consumption optimizes energy efficiency

Disadvantages

  • Limited to lithium-ion and lithium-polymer battery packs
  • Requires additional external balancing components for full functionality

Working Principles

BQ76925RGET operates by continuously monitoring the voltage and temperature of each cell in a battery pack. It compares these values to predefined thresholds and triggers appropriate actions, such as balancing or protection mechanisms, when necessary. The IC communicates with the system controller through the I2C interface, providing real-time data and enabling control over various functions.

Detailed Application Field Plans

BQ76925RGET finds applications in various fields, including: 1. Electric Vehicles (EVs) and Hybrid Electric Vehicles (HEVs) 2. Portable Electronics 3. Energy Storage Systems 4. Uninterruptible Power Supplies (UPS) 5. Solar Power Systems

Detailed and Complete Alternative Models

  1. BQ76930RGET
  2. BQ76940RGET
  3. BQ76950RGET
  4. BQ76960RGET
  5. BQ76970RGET

These alternative models offer similar functionality but may have different specifications or additional features tailored for specific applications.

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Wymień 10 typowych pytań i odpowiedzi związanych z zastosowaniem BQ76925RGET w rozwiązaniach technicznych

Sure! Here are 10 common questions and answers related to the application of BQ76925RGET in technical solutions:

  1. Q: What is the BQ76925RGET? A: The BQ76925RGET is a battery management system (BMS) IC designed for multi-cell lithium-ion or lithium-polymer battery packs.

  2. Q: What are the key features of the BQ76925RGET? A: The key features include cell voltage monitoring, overvoltage/undervoltage protection, short circuit detection, temperature sensing, and communication interfaces.

  3. Q: How many cells can the BQ76925RGET monitor? A: The BQ76925RGET can monitor up to 6 series-connected cells in a battery pack.

  4. Q: Can the BQ76925RGET balance the individual cell voltages? A: Yes, the BQ76925RGET has built-in balancing functionality to equalize the charge levels of each cell in the battery pack.

  5. Q: What communication interfaces does the BQ76925RGET support? A: The BQ76925RGET supports I2C and HDQ communication interfaces for easy integration with microcontrollers or host systems.

  6. Q: Is the BQ76925RGET suitable for automotive applications? A: Yes, the BQ76925RGET is designed to meet the stringent requirements of automotive applications, including high reliability and safety standards.

  7. Q: Can the BQ76925RGET measure battery temperature? A: Yes, the BQ76925RGET has an integrated temperature sensor to monitor the battery temperature accurately.

  8. Q: Does the BQ76925RGET provide overcurrent protection? A: Yes, the BQ76925RGET can detect and protect against overcurrent conditions in the battery pack.

  9. Q: Can the BQ76925RGET be used in portable electronic devices? A: Yes, the BQ76925RGET is suitable for a wide range of applications, including portable electronic devices, power tools, electric vehicles, and energy storage systems.

  10. Q: Are there any evaluation boards or reference designs available for the BQ76925RGET? A: Yes, Texas Instruments provides evaluation modules and reference designs to help developers quickly prototype and implement the BQ76925RGET in their applications.

Please note that these answers are general and may vary depending on specific application requirements. It's always recommended to refer to the datasheet and application notes provided by the manufacturer for detailed information.