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PCM50US24 Application Field and Working Principle

The PCM50US24 AC DC Desktop, Wall Adapters enables a wide range of applications. It is a reliable, efficient, and cost-effective solution for providing 24 Vdc output power for any device operating on a 24 Vdc input power. The PCM50US24 is a UL listed product, rated for 24Vdc input voltage and 2A continuous output current.

Output Voltage and Regulation

The PCM50US24 is designed to meet EMC standard EN55022 with class B immunity. The output voltage is adjustable within a range of 20% and regulated ± 5%. On-board protections include input over-voltage, short circuit, and over current. The PCM50US24 is capable of working with both 240Vac/115Vac input supply.

Working Principle of the PCM50US24

The PCM50US24 is based on a switched-mode power converter, which uses primary side and secondary side switching components. The primary side components, a fast-runner (FR) mosfet and a slow-runner (SR) rectifier, are the elements of the primary side circuit. The secondary side components, a transformer and two diodes, form the secondary side circuit. The FR and SR are connected to the input power supply through the rectifier circuit, and the FR and SR control the switching frequency and therefore also the output voltage. The output voltage is regulated through the control of the switching frequency and the amount of energy applied to the transformer.

The primary side of the PCM50US24 circuit consists of two mosfets, an inductor, and a rectifier. The mosfets regulate the amount of energy supplied to the secondary circuit, and the inductor stores energy during the switching cycles. The rectifier circuit controls the output voltage.

The secondary side of the PCM50US24 consists of a transformer, two diodes, and a capacitor. The transformer and the diodes convert the AC voltage from the primary side to DC voltage on the secondary side. The capacitor stores energy between the cycles to ensure the output voltage is constant. The transformer and the capacitor also help to lower the ripple on the output voltage and maintain a steady output current.

The PCM50US24 is designed with both safety features and power efficiency in mind. Safety features include output over-voltage and under-voltage protection, over-temperature protection, short circuit and over-current protection, and over-power protection. The PCM50US24 also offers power efficiency, with its high-efficiency mode enabling it to achieve up to 90% efficiency.

Conclusion

The PCM50US24 AC DC Desktop, Wall Adapters is a reliable, efficient, and cost-effective solution for providing 24 Vdc output power. Its fast-runner mosfet and slow-runner rectifier provide the necessary power conversion, while the transformer, two diodes, and capacitor convert the AC voltage into DC voltage and eliminate ripple on the output voltage. The wide range of features and power efficiency makes this adapter suitable for a variety of applications.

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