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EA8896 Application Field and Working Principle

Evaluation Boards - DC/DC & AC/DC (Off-Line) SMPS are used to test and optimize the performance and reliability of DC/DC and AC/DC power supplies. The Electronic Assembly’s EA8896 is a low cost and compact evaluation board of a suitable size to fit on a breadboard. It is used to evaluate and design DC/DC and AC/DC power supplies that deliver a range of voltages, currents, and switching time constants.

EA8896 Application Field

The EA8896 is designed to help engineers and technicians create and evaluate efficient, flexible, and reliable DC/DC & AC/DC power supplies. It allows for the accurate measurement of a range of voltages, currents, and switching time constants. It is applicable in measuring DC/DC and AC/DC parameters as well as evaluating and optimizing the performance of power supplies. It is suitable for a variety of application fields, such as automotive, medical, and industrial. It is also suitable for power conversion in computer peripherals, communications, and entertainment systems.

Working Principle

The EA8896 can be used in both buck and boost mode. It uses a single-ended primary inductor converter (SEPIC) topology to provide flexible input to output voltages in both buck and boost configurations. The on-board voltage-controlled oscillator (VCO) ensures accurate voltage and current regulation during the switching process.

The EA8896 uses two MOSFETs for regulation. The main MOSFET is connected to the input voltage and the synchronous rectification MOSFET to the output voltage. The device operates with a constant frequency, controlled by the VCO, and is designed to minimize output noise and ripple. The on-board feedback controller ensures that the output voltage is kept constant and provides short circuit protection.

The EA8896 is supplied with on-board components, such as capacitors, resistors, and diodes, which make it easy to use in a wide range of applications. The design of the EA8896 allows for efficient and reliable operation while the evaluation board components provide accurate and repeatable measurements.

Conclusion

The EA8896 is a versatile evaluation board for DC/DC and AC/DC (Off-Line) SMPS. It features a compact and cost-effective design that makes it a suitable choice for a range of applications. The onboard components make it easy to use and measure a range of voltages, currents, and switching time constants accurately and reliably. The SEPIC topology ensures flexible input to output voltage and the feedback controller ensures precise voltage and current regulation.

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