BQ25871EVM-813

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Evaluation and Demonstration Boards and Kits are one of the most powerful tools used to analyze, measure, and quickly test circuits. BQ25871EVM-813 is an evaluation module specifically designed for efficient testing and evaluation of the BQ25885 charge current capabilities. The kit is designed to evaluate and measure the transfer current limit, provide power source on the system load, and support multiple battery configurations.

BQ25871EVM-813 has various application fields in various areas, such as consumer electronics, automotive, and industrial. The battery charger evaluation and test system is used to evaluate many types of chargers including wireless, wired, flex, USB, and solar-powered. BQ25871EVM-813 is also applicable in the commercial segment with its charging station testing capabilities.

The module comes with LED indicators for continuous indication of system status.

The BQ25871EVM-813 works by using adaptive input float voltage. The maximum charge voltage can be adjusted by decreasing the output voltage of the BQ25885 to below the target voltage range. This works by adjusting the output voltage of the BQ25885 by digitally controlling two voltage selection pins, V3 and V5. V3 selects the first voltage below the desired voltage range. V5 selects either the first or second voltage range.

By enabling the voltage selection pins, the charger automatically determines when to reduce the output voltage of the BQ25885. The internal adaptive algorithm of the BQ25885 regulates the charger’s output voltage to a selected range through voltage selection pins. Additionally, the module incorporates advanced charge current and voltage protection mechanisms and float voltage control.

The BQ25871EVM-813 is designed with an internal temperature sensor, over-temperature protection (OTP) circuitry, overcharge protection (OCP) circuitry, reverse protection (RP) circuitry, and low voltage protection (LVP) circuitry.

The BQ25871EVM-813 has multiple terminals for connecting to the battery and peripheral components for accurate measurements of the charge current. The BQ25871EVM-813 also includes an output power port with two RJ-45 connectors and a power socket, allowing the user to power up the evaluation board with an AC adapter.

In conclusion, the BQ25871EVM-813 is designed as a highly integrated evaluation board for designing, testing, and measuring efficiency of various chargers. It has advanced protection mechanisms, voltage and current selection, and various capabilities to simulate different types of charges from various chargers. The evaluation and demonstration boards and kits will be essential tools in maintaining the accuracy of the charge current.

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