PI3325-00-EVAL1

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Evaluation boards are designed to evaluate specific types of switching power supplies (SMPS). One such evaluation board is the PI3325-00-EVAL1 evaluation board. This article will discuss the application field and working principle of the PI3325-00-EVAL1 evaluation board.

The PI3325-00-EVAL1 evaluation is typically used for off-line, DC/DC and/or AC/DC SMPS applications ranging from low power applications (7 to 24W) such as laptops, tablets, and phones to higher power applications (<250W) such as AC/DC adapters. This evaluation board is capable of taking an AC input voltage of 110V to 230V and providing a regulated DC output voltage of 12V or 5V. This flexibility makes it an attractive choice for various types of SMPS applications.

The PI3325-00-EVAL1 evaluation board utilizes a simple Buck-boost converter topology. This topology utilizes two main components: the power converter (PI3325-00) and the control board (PI3325-00-CTRL). The power converter is responsible for providing the regulated DC output voltage and is comprised of a high-performance switching power supply regulator, power MOSFETs, rectifying diodes, and filter capacitors. The control board is responsible for supplying the gate drive voltage to the power converter, and is comprised of a PWM controller, current-sense resistors, and other peripheral components.

The PI3325-00-EVAL1 evaluation board uses a constant frequency control scheme to maintain the regulation of the output voltage. This is accomplished by sensing the output voltage and adjusting the duty cycle of the PWM signal to regulate the output voltage. Additionally, protection features such as over current, short-circuit, and over-temperature are also implemented to ensure safe operation of the converter.

The PI3325-00-EVAL1 evaluation board also includes a variety of test points and other features to help make testing easier and more accurate. For example, the board includes several test points that allow monitoring of various parameters of the system such as the input voltage, output voltage, and switching current. Additionally, the board includes several LEDs for monitoring the output and protection states of the power supply.

In summary, the PI3325-00-EVAL1 evaluation board provides a convenient and effective way to evaluate off-line, DC/DC and/or AC/DC switching power supplies. This evaluation board is capable of taking an AC input voltage of 110V to 230V and providing a regulated DC output voltage of 12V or 5V. It utilizes a Buck-boost converter topology and a constant frequency control scheme to maintain the regulation of the output voltage. Additionally, the board also includes a variety of test points and other features to help make testing easier and more accurate.

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