UCC3808APWTR-2G4

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UCC3808APWTR-2G4 application field and working principle

UCC3808APWTR-2G4 is an integrated switching controller from Texas Instrument. It is a primary switching controller with reinforced isolation voltage up to 2.75kV. It is part of the UCC3808 series of switching regulators that includes fixed frequency, adjustable frequency, and synchronous rectification controllers.

UCC3808APWTR-2G4 is often used in applications such as isolated flyback, forward, and half-bridge DC-DC converters.

Application Field

UCC3808APWTR-2G4 is typically used in isolated flyback, forward, and half-bridge DC-DC converters with its reinforced isolation voltage up to 2.75kV. It can be used in applications such as gate drivers, LED drivers, and telecom converters.

UCC3808APWTR-2G4 has built-in undervoltage lockout (UVLO), frequency foldback, and thermal shutdown circuits to protect itself and the other components of the circuit. It also has peak current mode control with automatic slope compensation that allows for precise power regulation even under varying load and line conditions.

Working Principle

UCC3808APWTR-2G4 implements peak current mode control for precise regulation. In peak current mode control, an internal comparator monitors the output current through a sense resistor. The peak current mode control allows the device to accurately control and adjust the output current.

The device has an oscillator and a reference voltage with an adjustable voltage slope compensation. This combination permits precise control of the output voltage over varying load and line conditions.

In addition to peak current mode control and voltage slope compensation, UCC3808APWTR-2G4 also has built-in protections such as undervoltage lockout, frequency foldback, and thermal shutdown circuits. These protections ensure the device won\'t get damaged by excessive load or line conditions.

Conclusion

UCC3808APWTR-2G4 is a primary switching controller with reinforced isolation voltage up to 2.75kV from Texas Instruments. It is often used in applications such as isolated flyback, forward, and half-bridge DC-DC converters. It has an oscillator and reference voltage with adjustable voltage slope compensation, along with built-in protections such as undervoltage lockout, frequency foldback, and thermal shutdown circuits.

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