BQ27421EVM-G1A

Evaluation and Demonstration Boards and Kits: BQ27421EVM-G1A

The BQ27421EVM-G1A is an evaluation and demonstration board that uses the integrated circuit (IC) BQ27421-G1A from Texas Instruments. The board is designed to be a study tool for the evaluation and demonstration of the features and operation of the IC. It is also a versatile tool for developing and prototyping applications that can benefit from the features of the IC.

Application Field

The BQ27421EVM-G1A is primarily used for portable battery management, as well as for evaluating the BQ27421-G1A IC. It has several applications, such as: portable medical equipment, notebook computer designs, cellular phones, or any other type of device that operates on a single-cell lithium-ion battery. Additionally, the board can also be used for evaluations of packetsensors, SoC power management, etc.

Working Principle

The board and the IC it incorporates works as a bidirectional fuel gauge. This means it can read out the battery\'s state of charge and discharge currents, and also write the desired charge and discharge currents to the IC. Additionally, it can measure the temperature of the battery and identify any fault that may affect the charging or discharging of the battery.

The BQ27421-G1A IC that comes with this board will deliver a highly accurate battery capacity information. This capacity data is derived from a series of voltage and current measurements taken by the IC as the state of charge changes. This information is then used to update a Coulomb Counter, which provides a highly accurate state of charge.

The board also allows users to set up the state of charge and discharge threshold, as well as to customize the state of charge, temperature, and voltage settings via ASCII commands. This makes it easy to set up the battery in any desired configuration.

Conclusion

The evaluation and demonstration board BQ27421EVM-G1A is an essential tool for studying and evaluating the features and operation of the BQ27421-G1A IC. It also enables users to develop and prototype applications that can benefit from the features of the IC, such as portable medical equipment, notebook computer designs, cellular phones, and more.