UCC2808DTR-1G4

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The UCC2808DTR-1G4 is a high-performance, small size, monolithic integrated power switch controller with a wide range of applications. It was designed specifically for high efficient and low noise applications such as ac/dc converters, offline switchers, induction heating and SMPS. The UCC2808DTR-1G4 offers excellent temperature performance and delivers high reliability with an operating temperature range of -40 to 150 °C, making it suitable for industrial grade applications.

The UCC2808DTR-1G4 is a dual-channel power switch controller that provides a high voltage MOSFET driver, a high current low on-resistance MOSFET, and a steady frequency oscillator that regulates the switching frequency. In addition, the device features adjustable deadtime, reduced junction to ambient thermal resistance, and protection features like brown-in, over-temperature, over-current and over-voltage protection.

The power switch includes features such as overload, undervoltage lockout and overvoltage, which monitor and protect the external power MOSFETs and integrated power switches, ensuring the safety of the system. The UCC2808DTR-1G4 also offers fast, efficient and safe AC/DC conversion, allowing for high efficiency even at light load. The working principle of the converter is based on Pulse Width Modulation (PWM) principles. This PWM technique is also used to regulate the output voltage by comparing the feedback signal with a reference voltage. When the feedback signal is below the reference voltage, the duty cycle increases, resulting in higher power output, and when it is above, the duty cycle is reduced to reduce the output power.

The main function of the UCC2808DTR-1G4 is to control the gate voltage of a power MOSFET. The device senses when the MOSFET is on and off and plays a role, along with the current sensing circuit and the MOSFET gate drive, in providing an efficient power conversion. The device can also be used to control the switching frequency of the converter and a load. Also, the device improves the energy efficiency by providing improved frequency response at light loads and improved output regulation at high loads.

The UCC2808DTR-1G4 is suitable for applications such as AC/DC converters, offline switchers, induction heating, SMPS and more. It is also suitable for low-noise and cost-effective power supplies and high efficiency applications. The device provides high reliability and efficient, safe and fast AC/DC conversion and can help reduce the power consumption of the power converter.

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