ISL91107IRN-EVZ

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The ISL91107IRN-EVZ is a low cost evaluation board designed to function as an off-line SMPS (switched-mode power supply) rated for DC/DC and AC/DC operation. It offers a comprehensive solution for testing and evaluating high performance power materials and circuits. The ISL91107IRN-EVZ evaluation board is a compact, stand-alone plug-in product with all the required components assembled and ready for use. It combines efficiency, size and cost, allowing power system developers to quickly and easily evaluate the performance and robustness of their power supply design.

The ISL91107IRN-EVZ uses a low-cost power supply topology called a “cascaded boost-flyback”. This topology uses a high voltage DC bus, typically around 315V, which is generated from an input voltage of 110V – 277V AC. It then regulates the voltage on the bus by producing either one or two low voltage DC outputs. This topology combines the ability to provide a higher voltage output from a lower input voltage, with the added benefit of only requiring a single transformer and few other components. This allows the ISL91107IRN-EVZ to be one of the smallest off-line SMPS of its kind.

The ISL91107IRN-EVZ uses a variety of components to achieve its efficiency, size, and cost. This includes two switching transistors—a low and a high side transistor—an opto-coupler, a primary side flyback controller IC, a diode, and a feedback sensing circuit. The combination of these components allows the board to regulate the two outputs, providing a precise output voltage and current that can be monitored in real time. The board can provide two separate outputs to isolated circuits, allowing the two output voltages to be powered independently. The board also includes a shielding layer and other integrated components that protect the circuitry from EMI noise, allowing it to operate at very high frequency with low levels of EMI.

The ISL91107IRN-EVZ is an excellent choice for a variety of applications, including LED driver applications such as light strips and drivers, and DC/DC converters for battery-operated electronics. It is ideal for designers of power systems looking for a cost-effective, energy-efficient solution. The board can handle a wide range of input voltages, making it a great choice for a variety of projects. It can also be used to evaluate the performance and robustness of power systems, as it combines efficiency, size, and cost.

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