BQ78PL116RGZR - English Editing Encyclopedia Entry

Product Overview

Category

The BQ78PL116RGZR belongs to the category of integrated circuits (ICs) specifically designed for battery management systems.

Use

This product is primarily used for monitoring and controlling rechargeable batteries in various applications, such as electric vehicles, portable electronics, and renewable energy systems.

Characteristics

• High precision: The BQ78PL116RGZR offers accurate measurement and control of battery parameters.
• Advanced protection features: It provides overvoltage, undervoltage, and overcurrent protection to ensure safe battery operation.
• Communication capabilities: The IC supports communication protocols like I2C and SMBus, enabling seamless integration with other devices.
• Low power consumption: The BQ78PL116RGZR is designed to minimize power consumption, making it suitable for energy-efficient applications.
• Compact package: This IC is available in a small form factor package, allowing for space-saving designs.

Package and Quantity

The BQ78PL116RGZR is typically packaged in a surface-mount package, such as a QFN (Quad Flat No-leads) package. The exact package type and quantity may vary depending on the manufacturer and supplier.

Specifications

• Input voltage range: 2.7V to 4.8V
• Operating temperature range: -40°C to +85°C
• Number of battery cells supported: 1 to 16 cells
• Communication interface: I2C, SMBus
• Dimensions: Varies based on package type

Detailed Pin Configuration

The BQ78PL116RGZR has a specific pin configuration that facilitates its functionality. The following table outlines the pin assignments:

| Pin Number | Pin Name | Description | |------------|----------|-------------| | 1 | VSS | Ground | | 2 | VDD | Power supply (2.7V to 4.8V) | | 3 | SDA | I2C Data line | | 4 | SCL | I2C Clock line | | 5 | ALERT | Interrupt output | | 6 | BAT | Battery voltage sense input | | 7 | TS | Temperature sense input | | 8 | VSS | Ground |

Functional Features

The BQ78PL116RGZR offers several functional features that enhance battery management capabilities:

1. Accurate battery monitoring: The IC provides precise measurements of battery voltage, current, and temperature, enabling accurate state-of-charge estimation.
2. Overvoltage/undervoltage protection: It incorporates built-in protection circuits to prevent battery damage due to overcharging or deep discharging.
3. Overcurrent protection: The IC can detect and limit excessive current flow, safeguarding the battery and connected devices.
4. Temperature monitoring: It allows real-time monitoring of battery temperature, ensuring safe operation under varying conditions.
5. Communication interface: The I2C and SMBus compatibility enables seamless integration with microcontrollers and other peripheral devices.

Advantages and Disadvantages

Advantages

• High precision battery monitoring
• Advanced protection features
• Compact package size
• Low power consumption
• Wide operating temperature range

Disadvantages

• Limited support for a maximum of 16 battery cells
• Requires additional external components for complete battery management system implementation

Working Principles

The BQ78PL116RGZR operates based on the principles of battery voltage and current sensing, temperature measurement, and communication protocols. It continuously monitors the battery parameters, calculates the state-of-charge, and communicates this information to the host system. The IC also ensures the battery's safety by implementing various protection mechanisms.

Detailed Application Field Plans

The BQ78PL116RGZR finds applications in various fields, including:

1. Electric Vehicles (EVs): It is used in EV battery management systems to monitor and control the battery's performance, ensuring optimal efficiency and safety.
2. Portable Electronics: The IC is employed in smartphones, tablets, and laptops to accurately estimate battery life and provide protection against overcharging or overheating.
3. Renewable Energy Systems: It plays a crucial role in solar power storage systems, enabling efficient utilization of stored energy and preventing damage to batteries.

Detailed and Complete Alternative Models

1. BQ76930: This IC offers similar battery management features with support for up to 15 cells.
2. LTC6804: A versatile battery monitoring IC suitable for high voltage applications, supporting up to 12 cells.
3. MAX14920: This IC provides comprehensive battery management capabilities for up to 16 cells, along with additional fault detection features.

Please note that the above list represents only a few alternative models, and there are several other options available in the market.

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