PT5102A

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DC-DC converters, such as the PT5102A, are an important class of power electronic device used to convert one direct current (DC) into another, or sometimes between different voltages. They are highly efficient and are often used when a stable and variable power supply is required for different applications.

The PT5102A is a synchronous buck DC-DC converter which has been designed by Powertech for low power applications such as field-programmable gate array (FPGA) power supplies. It has an input voltage range of 4-25 V and an adjustable output voltage range from 0.8-18 V.

The PT5102A operates on a fixed frequency of 650KHz with a maximum output current of 1A. It features a peak current based loop compensation for input line transient response and good line impedance compensation for improved transient response. It also has an adjustable function which can be used to customize the output voltage, such as to provide a +4.2V supply for FPGA core logic power supply applications.

The PT5102A utilizes a synchronous rectification technique. A voltage regulating circuit is employed to ensure the accuracy of the output voltage by comparing the feedback voltage with the reference voltage. If the feedback voltage is lower than the target, the regulating circuit will force the switching regulators to remain on as long as necessary in order to drive the output voltage higher until it reaches the adjustable target value.

The PT5102A is a high efficiency DC-DC converter with a typical efficiency of over 95%. Its internal MOSFETs are designed for operating at high frequency to reduce EMI and can handle up to 1A of output current. It also features an adjustable output voltage range and a programmable current limit. The device is protected against overloading, over voltage and short-circuit.

The PT5102A is an ideal solution for low power applications such as powering field-programmable gate arrays and other similar devices. Its adjustable output voltage, low cost and high efficiency make it an attractive solution for many projects.

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