BQ78350DBTR

The BQ78350DBTR is a highly integrated battery management system (BMS) IC designed for monitoring and protection of multi-cell lithium-ion battery packs. This IC features advanced functions such as cell voltage monitoring, temperature sensing, and communication interfaces for smart battery management.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• VCAP: Voltage for Analog Block
• VDIFFP: Positive Differential Sensing Terminal
• VDIFFN: Negative Differential Sensing Terminal
• VIO: Digital Supply Voltage
• VSS: Ground
• SMBCLK: SMBus Clock Input/Output
• SMBDATA: SMBus Data Input/Output
• IRQ: Interrupt Request Output
• CBC: Cell Balancing Control
• TSD#: Temperature Sense Inputs
• AIN#: Analog Inputs
• DRP: Discharge Request Output Positive
• DRN: Discharge Request Output Negative
• CHG: Charge Request Output

Circuit Diagram

Include a detailed circuit diagram illustrating the connections and operation of the BQ78350DBTR IC for a comprehensive understanding of its functionality.

Key Features

• Advanced Battery Management: The BQ78350DBTR offers comprehensive battery monitoring and protection features for safe operation.
• Cell Balancing Capability: This IC supports cell balancing functionality to ensure uniform cell voltages and extend battery life.
• SMBus Communication: Integrated SMBus interface facilitates communication with host systems for data exchange and configuration.
• Temperature Monitoring: Temperature sensing inputs enable accurate thermal management of the battery pack.
• Integrated Protection: Built-in safeguards such as overvoltage, undervoltage, and overcurrent protection enhance battery pack safety.

Note: For detailed technical specifications, please refer to the BQ78350DBTR datasheet.

Application

• Electric Vehicles: Ideal for use in electric vehicle battery management systems to monitor and protect lithium-ion battery packs.
• Energy Storage Systems: Suitable for integration into energy storage systems for residential or commercial applications requiring robust battery management.
• Portable Electronics: Can be implemented in portable electronic devices to manage and optimize the performance of lithium-ion battery packs.

Functionality

The BQ78350DBTR functions as a sophisticated battery management system, providing essential monitoring, protection, and communication capabilities for multi-cell lithium-ion battery packs. It ensures the safe and efficient operation of battery-powered systems.

Usage Guide

• Power Supply: Connect VIO (Pin 4) to the digital supply voltage and VSS (Pin 5) to ground.
• Battery Connections: Connect the cell voltage inputs, temperature sense inputs, and other relevant signals as per the application requirements.
• Communication Setup: Interface the SMBus clock and data lines (SMBCLK and SMBDATA) for communication with external systems.

Frequently Asked Questions

Q: What is the maximum number of cells supported by the BQ78350DBTR?
A: The BQ78350DBTR can monitor and manage battery packs with up to 15 series-connected cells.

Q: Does the BQ78350DBTR support passive or active cell balancing?
A: The BQ78350DBTR supports active cell balancing to equalize cell voltages during charge and discharge cycles.