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Isolated Flyback Controller with PFC Controls Voltage or Current

Jesus Rosales - Applications Engineer Oct 27th 2011

Linear Technology’s LT®3798 isolated controller with active power factor correction (PFC) is specifically designed for regulating bus voltages or driving constant current applications over a wide input range of 10V to 480V. It is ideal for constant voltage/current applications requiring 4W to over 100W power. The LT3798’s unique current sensing scheme delivers a well regulated voltage or current to the secondary side with no optocoupler. It also offers low harmonic distortion while delivering efficiencies as high as 90%. Output short circuit protection ensures long term reliability and a simple, compact solution footprint addresses a wide range of applications.

Isolated Flyback Controller with PFC Controls Voltage or Current