ISL6420BEVAL1Z

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The ISL6420BEVAL1Z is a two-stage AC/DC off-line switch mode power supply (SMPS) designed to evaluate the ISL6420C synchronous rectifier controller. The part is part of Analog Integrated Circuit (IC) Solutions’ wide range of evaluation boards that provide a platform for evaluation of the specific functions and features of many of their available ICs. It is a versatile, compactly designed board, allowing AC input voltages ranging from 110V to 230V.

The ISL6420BEVAL1Z is designed to deliver up to 3 kW power rating. It consists of a full bridge rectifier stage, followed by a two-stage buck converter. The first stage converts the voltage from the rectifier stage to a lower voltage suitable for a switching converter, while the second stage converts the lower voltage to the desired output. The synchronous rectifier controller helps to reduce the power losses associated with diode forward voltage drops, increasing the efficiency of the converter.

The control loop of the ISL6420BEVAL1Z relies on a Proportional-Integral (PI) controller running at fixed frequency. The feedback voltage from the output voltage sense is used to adjust the voltage level of the current reference, thereby controlling the output voltage and current. Synchronous rectifier control is active at the second stage, where the part automatically determines the best operation mode (continuous or discontinuous). Control loop performance also includes protection against short-circuit, open loop, and out of regulation conditions.

The evaluation board also features a graphical user interface (GUI) for easy setup and configuration, as well as additional options for device programming. Additionally, there is an on-board data acquisition system which offers real-time data monitoring for the voltage and current at each stage, further aiding in troubleshooting.

The ISL6420BEVAL1Z is useful in designs that require efficient generation of 3 kW of rated power output and come with many features that make it a powerful tool for evaluation and development of power conversion. Its features make the evaluation board an ideal choice for automotive applications, smart grid systems, point of load (POL) voltage regulation, industrial and consumer converters, and more.

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