BQ27425YZFT-G2A

Series:	Impedance Track™
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Function:	Battery Monitor
Battery Chemistry:	Lithium-Ion
Number of Cells:	1
Fault Protection:	--
Interface:	I²C
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	15-UFBGA, DSBGA
Supplier Device Package:	15-DSBGA
Base Part Number:	BQ27425

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Introduction

The BQ27425YZFT-G2A is a highly integrated microcontroller based device which integrates several battery management functions in a single IC. It is used both in automotive and non-automotive applications as a battery monitoring and protection system. It is also capable of providing powertrain safety interlocks, providing state of charge monitoring and power control policies to assist in monitoring and protecting battery life.The BQ27425YZFT-G2A is an integrated power management IC (PMIC) developed by Texas Instruments (TI), designed for use in applications requiring efficient tracking and monitoring of battery status. It is part of the Battery Management product family from TI, and is based on the industry-standard BQ27425 device.

Application Areas of BQ27425YZFT-G2A

The BQ27425YZFT-G2A can be used in a variety of automotive and non-automotive applications such as:

• Automotive:
  • Automotive Powertrain Controllers
  • Automotive Body Control Modules
  • Automotive Battery Management System
  • Automotive Battery Chargers
  • Electric and Hybrid Vehicles
• Non-automotive:
  • Power Bank and Wearable Devices
  • Portable Battery Packs
  • Home Energy Storage Applications
  • UAV (Unmanned Aerial Vehicle) Battery Management System

The BQ27425YZFT-G2A is capable of monitoring up to two battery cell packs, and has a wide input voltage range from 3V to 16V. It also offers a wide range of application layer features, such as comprehensive cell balancing, cell protection and fault indication, cell temperature monitoring and protection, as well as system-level power control policies and state-of-charge (SOC) estimation.

Working Principle of BQ27425YZFT-G2A

The BQ27425YZFT-G2A works in conjunction with a battery management system (BMS) comprised of passive components, such as sense resistors, connectors, and power switches. The BQ27425YZFT-G2A measures the temperature of the battery cells and performs a range of safety checks including over-temperature, over-current, under-voltage, and over-voltage checks, while the BMS controls the power flow, balancing the charge/discharge currents of all cells in the pack, and managing the state-of-charge.The BQ27425YZFT-G2A also integrates an analog-to-digital converter (ADC) for measuring the sense resistors, as well as a digital-to-analog converter (DAC) for controlling the operation of the BMS power switches. Additionally, the BQ27425YZFT-G2A contains a highly accurate charge controller which uses an algorithm to ensure a precise and fast charging process without damaging the battery cells.Additionally, the BQ27425YZFT-G2A can be used as a standalone monitoring and protection system to continually monitor the state-of-charge of the battery and protect the battery from damaging over-charge or over-discharge conditions. The integrated internal logic allows the system to constantly monitor the state-of-charge of the battery and provide feedback for the operation of the external BMS.

Conclusion

The BQ27425YZFT-G2A from TI is a highly integrated and powerful microcontroller based device designed for applications requiring efficient tracking and monitoring of battery status. It is suitable for a wide range of automotive and non-automotive applications and offers a range of features including voltage and current measurement, cell protection and fault indication, and a power management system which regulates the operation of the BMS and ensures a precise and safe charging process. The BQ27425YZFT-G2A provides reliable and precise monitoring and protection of the battery system, allowing for a safe and efficient operation in a wide range of automotive and non-automotive applications.

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