BQ7790512PW - Product Overview
Basic Information Overview
- Category: Integrated Circuit (IC)
- Use: Battery Management System (BMS)
- Characteristics:
- High precision voltage and current monitoring
- Overvoltage and undervoltage protection
- Temperature sensing and thermal management
- Communication interface for data exchange
- Package: PowerPAD™ TSSOP-38
- Essence: BQ7790512PW is a highly integrated IC designed for battery management systems. It provides accurate monitoring, protection, and communication capabilities for batteries.
- Packaging/Quantity: Available in tape and reel packaging with 250 units per reel.
Specifications
- Input Voltage Range: 2.7V to 4.8V
- Operating Temperature Range: -40°C to +85°C
- Communication Interface: I2C
- Number of Cells Supported: Up to 12 series-connected cells
- Protection Features:
- Overvoltage Protection: Adjustable threshold with programmable delay
- Undervoltage Protection: Adjustable threshold with programmable delay
- Overcurrent Protection: Adjustable threshold with programmable delay
- Short Circuit Protection: Adjustable threshold with programmable delay
- Accuracy:
- Voltage Measurement: ±10mV
- Current Measurement: ±5%
- Temperature Measurement: ±1°C
Detailed Pin Configuration
The BQ7790512PW has a total of 38 pins. The pin configuration is as follows:
| Pin Number | Pin Name | Function | |------------|----------|----------| | 1 | VDD | Power Supply Voltage | | 2 | GND | Ground | | 3 | SDA | I2C Data Line | | 4 | SCL | I2C Clock Line | | 5 | ALERT | Alert Output | | ... | ... | ... | | 38 | VSS | Negative Supply Voltage |
Functional Features
- Accurate voltage and current monitoring for each battery cell
- Overvoltage and undervoltage protection to prevent damage to the batteries
- Temperature sensing and thermal management to ensure safe operation
- Communication interface (I2C) for data exchange with external devices
- Programmable protection thresholds and delays for customization
Advantages and Disadvantages
Advantages: - High precision monitoring ensures accurate battery management - Comprehensive protection features enhance battery safety - Integrated communication interface simplifies system integration - Customizable protection thresholds and delays provide flexibility
Disadvantages: - Limited to a maximum of 12 series-connected cells - Requires external microcontroller for full functionality
Working Principles
The BQ7790512PW operates by continuously monitoring the voltage, current, and temperature of each battery cell. It compares these values against programmable thresholds to detect abnormal conditions. In case of overvoltage, undervoltage, overcurrent, or short circuit events, the IC triggers appropriate protection mechanisms to safeguard the batteries.
Detailed Application Field Plans
The BQ7790512PW is primarily used in battery management systems for various applications, including: - Electric vehicles - Energy storage systems - Portable electronic devices - Uninterruptible power supplies (UPS) - Solar power systems
Detailed and Complete Alternative Models
- BQ7790500PW - Similar functionality with support for up to 10 series-connected cells.
- BQ7790520PW - Enhanced version with additional protection features and support for up to 16 series-connected cells.
- BQ7790530PW - Higher accuracy variant with improved measurement precision.
These alternative models offer similar functionality to the BQ7790512PW but may have different specifications and pin configurations.
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기술 솔루션에 BQ7790512PW 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.
Sure! Here are 10 common questions and answers related to the application of BQ7790512PW in technical solutions:
Q: What is BQ7790512PW? A: BQ7790512PW is a specific model of battery management system (BMS) integrated circuit developed by Texas Instruments.
Q: What is the purpose of BQ7790512PW? A: The purpose of BQ7790512PW is to monitor and protect lithium-ion battery packs used in various applications, ensuring safe and efficient operation.
Q: What are the key features of BQ7790512PW? A: Some key features include cell balancing, overvoltage/undervoltage protection, overcurrent protection, temperature monitoring, and communication interfaces.
Q: What is cell balancing, and why is it important? A: Cell balancing is the process of equalizing the charge levels of individual cells within a battery pack. It is important to prevent capacity imbalances, which can lead to reduced overall performance and premature aging of the battery.
Q: How does BQ7790512PW communicate with other components in a system? A: BQ7790512PW supports various communication interfaces such as I2C, SPI, and HDQ, allowing it to exchange data with microcontrollers or host systems.
Q: Can BQ7790512PW handle high-current applications? A: Yes, BQ7790512PW is designed to handle high-current applications, making it suitable for electric vehicles, power tools, and other demanding systems.
Q: Does BQ7790512PW have built-in safety features? A: Yes, BQ7790512PW incorporates multiple safety features like overvoltage protection, undervoltage protection, and overcurrent protection to ensure safe battery operation.
Q: Can BQ7790512PW operate in extreme temperature conditions? A: Yes, BQ7790512PW is designed to operate reliably in a wide range of temperature conditions, typically from -40°C to +85°C.
Q: Is BQ7790512PW suitable for single-cell or multi-cell battery packs? A: BQ7790512PW is specifically designed for multi-cell battery packs, typically ranging from 3 to 16 series-connected lithium-ion cells.
Q: Are there any evaluation modules or development tools available for BQ7790512PW? A: Yes, Texas Instruments provides evaluation modules and development tools that can help engineers prototype and test their designs using BQ7790512PW.
Please note that the specific details and answers may vary depending on the manufacturer's documentation and application requirements.