BQ24165EVM-741

Evaluation and demonstration boards and kits are a valuable tool to help engineers develop and test new designs, particularly when working with integrated circuits in new and complex applications. The BQ24165EVM-741 is a board and evaluation module (EVM) that proves out the many features and characteristics of Texas Instruments’ (TI) BQ2416x line of integrated circuits (ICs) intended for use in power banks. This article will provide an overview of the BQ24165EVM-741’s evaluation and demonstration capabilities, followed by a look at its working principles.

The BQ24165EVM-741’s primary intended field of application is rechargeable batteries used in electronic equipment such as laptops, tablets, and phones. The evaluation module is a comprehensive demonstration platform allowing engineers to demonstrate the capabilities of the BQ2416x IC family by providing a wide range of useful power-bank-related features and connectors necessary to evaluate the multiple performance parameters of the family.

The EVM accommodates a range of form factor sizes and utilizes a database of non-rechargeable battery types to allow engineers to pick the exact battery type they are looking for, making it possible to evaluate different battery types for compatibility. This wide array of features make the EVM an invaluable tool for power bank developers.

In addition, the evaluation module supports the evaluation of various charging parameters of the ICs to validate the device\'s energy-efficiency and charging accuracy for a variety of battery types, chemistries and capacities, enabling engineers to make an informed decision about the power bank design.

The BQ24165EVM-741 offers two major features which help to evaluate the charging performance of the BQ2416x IC family: 1) output current in Constant Voltage mode, and 2) voltage folding in Constant Voltage/Constant Current mode. In Constant Voltage mode, the output voltage (Vout) is kept at a constant while the output current (Iout) is adjusted, providing information about the EVM\'s load regulation and current limit behavior. In Constant Voltage/Constant Current mode, the EVM\'s voltage folding behavior is evaluated.

The board also supports evaluation of various charging parameters such as charge current, charge state and other safety features. A current sense resistor (Rsense) is provided to measure the charge current, enabling engineers to view the temperature rise associated with each IC as it charges. Other safety features such as over temperature protection (OTP) and overcharge protection (OCP) are also available and can be tested with the board.

The BQ24165EVM-741 can also be configured to monitor additional parameters such as the adapter current limit, output voltage, charge current, and charge state directly from the EVM. This information can be useful in the evaluation of the ICs performance and power management characteristics.

Finally, the BQ24165EVM-741 can be used to evaluate the ICs\'s output performance, which is highly dependent on insulated gate bipolar transistors (IGBTs) used in its circuit design. By measuring the output current and voltage, engineers are able to analyze the ICs\'s output switching characteristics such as rise and fall times, power dissipation, and EMI performance.

In conclusion, the BQ24165EVM-741 is an invaluable evaluation and demonstration board that allow engineers to easily evaluate various parameters of Texas Instruments\'s BQ2416x IC family. It offers a comprehensive range of features and connectors which allow engineers to test the devices’ performance and characteristics in various power bank applications.