ISL9105EVAL1Z

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The ISL9105EVAL1Z is a self-contained evaluation board designed for use with the ISL9105, a high-performance, high-efficiency monolithic synchronous-rectified PWM step-down integrated circuit (IC). It is part of a family of dc/dc and ac/dc Off-Line SMPS evaluation boards produced by Intersil, and is designed to provide users with a fast, efficient, and simple solution for testing and evaluating the capabilities of the ISL9105 IC.

The ISL9105 is a 5A, 28V, 1.5MHz PWM buck controller designed to operate in both continuous and discontinuous conduction modes. It utilizes 90% efficient synchronous rectification and is tolerant of high input voltages up to 36V. The device features integrated over-current protection, thermal shutdown, and short-circuit protection, as well as programmable soft-start, current limit, and output voltage slew rate control.

The ISL9105EVAL1Z evaluation board uses a combination of inexpensive, easily available components to provide a fully functional power supply. The board features a 1.5MHz PWM controller, a synchronous MOSFET, and a 4A Schottky diode. The complete design eliminates the need for additional MOSFET drivers and also includes an external current sense resistor and bootstrap diode. The board layout is highly optimized to minimize the number of components used, with generous copper layout for improved thermal performance.

The board layout is designed for use with the ISL9105. The board is pre-configured with the necessary components, including capacitors, resistors, diodes, and the MOSFET, to provide a complete, fully functional power supply. The design of the board allows for easy adjustments in output voltage, output current, and operating frequency. The user can easily customize the output voltage and current by adjusting the external components.

The board is designed to produce regulated output voltages up to 28V at 5A from an input voltage range from 7V to 36V. The power supply has a programmable overload protection, allowing the user to program the auto-recovery or latched mode of operation. The board also has a thermal protection circuit, which is activated when the operating temperature exceeds a certain threshold. An additional feature of the board is the adjustable frequency for the internal PWM controller.

The ISL9105EVAL1Z evaluation board is designed for easy testing and evaluation of the ISL9105 synchronous-rectified PWM buck controller IC. It features an innovative layout for reduced component count, along with integrated protection features including over-current, thermal shutdown, and short-circuit protection. Additionally, the adjustable frequency for the internal PWM controller allows users to customize the output characteristics. Companies taking advantage of the boards capabilities can use it as a fast and efficient solution to identify issues and verify functionality for end applications.

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