UCC28510DWG4

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Power factor correction (PFC) systems are widely used in various applications, and the Texas Instruments UCC28510DWG4 is one of the most popular PFC controllers available. This article will discuss the application field and working principle of this device.

The UCC28510DWG4 is a switch-mode PFC controller that provides both active and passive PFC in an integrated solution. It is suitable for both hard-switched topologies and resonant topologies, including active-clamp forward, valley switching, and LLC resonant converters. The device has an input voltage range of 3.6 V to 38 V and a power rating of up to 10 kVA. It also features integrated protection strategies such as internal temperature monitoring, open-loop detection, and over-current protection.

The primary application fields for the UCC28510DWG4 include industrial power conversion, computing, consumer electronics, and LED lighting. In industrial applications, it can be used to provide voltage regulation, surge protection, and noise reduction for critical loads. In computing applications, the device can provide power factor correction and EMI filtering for power supplies. In consumer electronics, the device is commonly used for switching power adapters and chargers. Lastly, in LED lighting applications, the device can provide current control and dimming accuracy.

The working principle of the UCC28510DWG4 is based on switch-mode power factor correction. With this topology, the switching frequency is set by an internal oscillator and the duty cycle is determined by an internal current error amplifier. The output current is sensed through an internal current sense resistor, and the voltage is sensed through an external voltage sense resistor. The power factor is controlled by the current error amplifier and is typically set to greater than 0.95. The device also implements a protection strategy, which shuts down the system when it detects high temperatures, an open loop, or an over-current situation.

In conclusion, the UCC28510DWG4 is a popular PFC controller designed for a wide range of applications. It provides active and passive PFC in an integrated solution, and is suitable for both hard-switched topologies and resonant topologies. Its primary application fields include industrial power conversion, computing, consumer electronics, and LED lighting. The device’s working principle is based on switch-mode power factor correction, and it implements a protection strategy to shut down the system in the event of an emergency.

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