UCC28180D

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The concept of power factor correction is not a new one. It was first studied in the 1870s and has been explored ever since. Power factor correction (PFC) is the use of power electronics devices, such as capacitors and inductors, to mitigate the effects of voltage and current unbalances in AC power, resulting in improved efficiency, power quality and reduced losses.

UCC28180D Power Factor Correction devices are a mature product in this field. UCC28180D PFC devices are developed to deliver highest system-level efficiency with utmost protection and current monitoring capability. With power up to 6.3 kW, UCC28180D PFCs is suitable for basic universal input off-line applications, offering optimal device solutions.

UCC28180D PFC device offers a comprehensive set of features that allow designers to implement the right product solution with highest design flexibility. This device has excellent performance such as low coil utilization, low ripple conductive loss, internal soft-start & brown-out reset features, external valley switching and Auxiliary leads protection, as well as AC line voltage/current/active power compensation. The device also offers an internal isolated gate drive & internal optocoupler and provides variable frequency control to reduce stress of switching frequency on gate driver.

The operation of UCC28180D PFC device can be very easily explained through its fundamental structure. It consists of two main sections - the main section and the control section. The main section has active components, such as diodes, capacitors, transformers, inductors and switches. The control section consists of two parts – the voltage comparator, which compares the input voltage with a reference voltage, and the current amplifier, which amplifies the signal from the voltage comparator in order to control the operation of the power electronic switches.

In operation, UCC28180D PFC device functions by comparing the input voltage to an ideal sinusoidal reference. When the voltage level of the input signal exceeds that of the reference signal, the voltage comparator triggers an output, which enables the switches and activates the power factor correction circuitry. When the switch is closed, current is drawn from the input source and the resulting power factor is thereby corrected. The device also has a valley-switching feature, which allows its switches to remain off when the input voltage drops below its target voltage level, resulting in improved efficiency and reduced power consumption.

The UCC28180D PFC has a variety of applications, ranging from small switching power supplies, notebook adapters and game console adapters to large server and telecom power supplies. It is widely used in commercial enterprises and residential households, due to its cost effectiveness, power quality, and power conversion efficiency. It not only helps to reduce harmful line harmonics but also helps to reduce total harmonic distortion, which preserves the integrity of the power system.

In conclusion, UCC28180D Power Factor Correction device is a mature and well-established product designed to provide system-level efficiency, active power compensation and internal voltage/current sensing capability. Through the features provided, designers can now easily meet stringent design requirements with improved design flexibility, making this device a great choice for application in a wide range of industries.

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