BQ25892EVM-664

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Evaluation and Demonstration Boards and Kits

BQ25892EVM-664 is a 3-channel synchronous buck-boost converter designed to fill the space between battery management and system power management in a wide range of applications, such as automotive, industrial, personal electronics, and consumer applications. The BQ25892EVM-664 evaluation board is designed to evaluate the Flexible Power Path Management and System Power Management features of the BQ25892/288/384/884EVM-664 3A buck-boost converters.

Application Field

Application areas for the BQ25892EVM-664 evaluation board include battery and in-system charging, powering of low-dropout regulators and enabling fast transient response. It also features low quiescent current and reduces the number of external components.

This evaluation board is designed for an input voltage range of 3.3V/2V to 20V and provides a 4V to 28V adjustable output voltage. It can deliver up to a 3A output current with high efficiency throughout the entire load range. The provided protection features include, but are not limited to, over current protection (OCP), over voltage protection (OVP) and short-circuit protection (SCP).

Working Principle

The BQ25892EVM-664 has three main operating modes - buck, boost and buck-boost modes. In buck mode, the input voltage is higher than the output voltage. In boost mode, the input voltage is lower than the output voltage. In buck-boost mode, the converter switches between buck and boost modes depending on input and output voltages.

The BQ25892EVM-664 converter can run in low-ripple low-noise DCM (Discontinuous Conduction Mode) for a steady output voltage. It also offers light load efficiency and low quiescent current through a selectable power save mode. The evaluation board is pre-programmed to allow various settings, making it easy to test different operating conditions without changing external components.

The optional features of the BQ25892EVM-664 evaluation board include analog controllers and PWM controllers, allowing different system power management topologies such as bypass and power save mode. It also allows for fault-detection and feedback functions, providing a fast and accurate response to changing input and output voltages.

Conclusion

The BQ25892EVM-664 evaluation board is an ideal solution for testing the features of the BQ25892/288/384/884EVM-664 3A buck-boost converters. It is highly suitable for powering low-dropout regulators and enabling fast transient response. It is capable of providing protection features such as OCP, OVP and SCP. With the optional analog controllers and PWM controllers, it allows users to quickly and easily test the different system power management topologies.

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