BQ24278EVM-759

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Evaluation and demonstration boards and kits have been around for many decades, and have been used in a wide variety of applications. The BQ24278EVM-759 is no exception, as it serves as an ideal evaluation and demonstration board for any product using a battery charger. The BQ24278EVM-759 is an application evaluation module (EVM) based on the BQ24272 KNX wide range input synchronous buck converter with current shunt monitoring. The BQ24272 is a single-input, single-cell Li-ion/Li-polymer battery charger. It includes a configurable current sense amplifier to measure battery current.

The BQ24278EVM-759 application is typically used for industrial applications, such as robots, wearable electronics, and other motion control products that require a reliable battery charging solution. The EVM includes a high current MOSFET configured for buck converter operation from 5V to 6V input voltage range. The high integration of the BQ24272 includes an input current limiting of 0.5A or 1A, an input voltage limiting of 4.4V to 6V, and an output voltage range of 4.1V to 5.5V.

The BQ24278EVM-759 EVM has several features that make it an ideal application board. It includes an CAN (Controller Area Network) interface that enables remote monitoring and control of charging process, and proprietary communication to reduce system cost and development time. In addition, it includes an LED for indication of battery voltage level, as well as over-temperature and over-voltage protection. The EVM also supports both floating and cell balancing modes.

The working principle of the BQ24278EVM-759 is fairly simple. The input voltage of the board is regulated by the CAN interface and controlled by the external microcontroller (MCU). The MCU then sets the necessary power levels and configures the board accordingly using the EVM software. The board then adjusts the buck converter to the input voltage and current profile set by the MCU, and begins charging the battery as specified. The current sense resistor helps to monitor and control the charging process, and provide the necessary data back to the MCU.

In conclusion, the BQ24278EVM-759 is an excellent application-specific evaluation module for industrial applications that require a reliable and powerful charging solution. The board’s features, such as the CAN interface, LED indication, and over-voltage and over-temperature protection, make it an ideal solution for such applications. The working principle is straightforward and easy to understand, and with the right software, it can become an excellent evaluation and demonstration board for any product utilizing a battery charger.

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