BQ24292IEVM-021

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Evaluation and Demonstration Boards and Kits provide a platform for product engineers, researchers, and developers to quickly initialize a given design. The BQ24292IEVM-021, a Texas Instruments (TI) product, is a reference board for evaluation of the BQ2429x Family of Li-Ion Battery Charger Integrated Circuits (ICs). It is a comprehensive development platform for fast design and evaluation of USB, adapter, and wireless charging solutions. This ready-to-use Evaluation Module (EVM) board includes components to optimize the user experience to evaluate the performance and features of the BQ2429x integrated circuit family.

Application Field

BQ24292IEVM-021 is designed for use in portable devices and USB charging applications. It offers a comprehensive development and evaluation platform for designing wireless, adapter, and USB solutions. This comprehensive package includes specialized components such as MOSFETs and resistors to permit design adjustments for a wide range of power delivery capabilities. The evaluation module can be used to evaluate the high-efficiency, low-power solution of BQ2429x ICs for charging of single-cell lithium-ion batteries.

Working Principle

The BQ24292IEVM-021 EVM Module is based on the IC BQ24292 from Texas Instruments. This common-mode switching battery charger IC is capable of charging a single-cell Li-Ion battery from USB, adapter, and higher power sources. It includes protection circuitry such as overvoltage protection, overcurrent, overdischarge, and short-circuit protection. A discharge MOSFET is integrated to permit battery precharge during the charging sequence.

The BQ2429x ICs operate as current-limited DC-DC converters to regulate the battery voltage. When using the EVM board with a single cell Li-Ion battery, a programmed battery-rate discharge current capability (DCR) is provided from 0.1A to 5A using resistor Rf2. The DC-DC switcher regulates battery voltage during operation and uses either constant voltage or constant current modes to charge the battery. The device features an auto power-adjustment mode (PA_LIMIT) and can switch automatically between two different power delivery configurations.

The BQ24292 EVM kit is used for fast evaluation of the BQ2429x ICs. The kit includes all necessary components such as USB lines, iPhone cables, charge adapters, and a safety certified power supply. The user is provided with the ability to evaluate the features of the device by monitoring voltage, current, temperature, and safety protections. The GUI interface offers asynchronous sampling of all device parameters. Additionally, the kit includes the necessary components to drive higher input power into the charger and evaluate wireless charging functions.

Conclusion

The BQ24292IEVM-021 EVM is designed to evaluate the features and performance of the BQ2429x family. It is suitable for a wide range of charging applications such as wireless, adapter, and USB solutions. The evaluation module can be used for fast prototyping and design verification of power delivery systems. The kit includes multiple components such as specially designed MOSFETs, resistors, and safety certified power supply to ensure a complete solution. Additionally, the kit offers users a GUI interface with asynchronous data sampling, permitting a fast evaluation.

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