UCC3818APWR

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Power Factor Correction (PFC) is an important factor to consider when designing a power supply or motor. With PFC, power supply designers are able to improve the power factor of a power supply, which can have an effect on system efficiency, power line contamination, cost, and more. The UCC3818APWR is an Integrated Pulse Width Modulator and PFC Control IC from Texas Instruments that is designed to provide high efficiency power factor correction for power conversion circuits. The UCC3818APWR is well-suited for multi-output power converters, specialized SMPS, AC/DC converters and other power supplies, as it is also capable of working as a secondary PFC controller.

This UCC3818APWR PFC is based on a unique topology in which the main control dims the mains voltage waveform to set the desired power factor. It uses a ‘power-based’ control technique to provide fast transient responses and dynamic operation. The IC is designed to deliver optimal performance at a given power level, with a unity power factor under a wide range of line and load conditions. It also provides a wide range of protection features and comprehensive diagnostic information.

In a typical application, the UCC3818APWR is used to control the power factor at the input of a power supply or motor. It is capable of driving an external PFC switch up to 600V and can be used as a primary or secondary controller. When used as one of several controllers in a system, the UCC3818APWR can monitor the input voltage and ensure that the output power factor remains at or close to unity. It is also capable of monitoring the output current of each controller, and will shut off the signal to its respective controller if the output current exceeds the programmed limit.

The UCC3818APWR also includes a range of protection features to protect power supply components from overvoltage, overcurrent, overtemperature, and other types of faults. These features can help to ensure the reliability and safety of the power supply and its user. The integrated diagnostics provide information on system temperate, input and output voltages, current and power, as well as a variety of other parameters.

The UCC3818APWR is a powerful and cost-effective way to improve the efficiency of a power supply or motor, while also providing protection and diagnostic information. Its ability to monitor input and output currents, as well as output voltages and power, makes it an ideal choice for multi-output power converters, specialized SMPS, AC/DC converters, and other power supplies. This IC offers high efficiency power factor correction, as well as a range of integrated protection features and diagnostic functions, making it an excellent choice for power conversion applications.

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