UCC2819A Datasheet Power Factor Preregulator

Manufacturer: Texas Instruments

Datasheet Details

The UCC2819A/UCC3819A provides all the functions necessary for active power factor corrected preregulators.

The controller achieves near unity power factor by shaping the ac-input line current waveform to correspond to that of the ac-input line voltage.

Average current mode control maintains stable, low distortion sinusoidal line current.

UCC2819A UCC3819A ą SLUS579 − OCTOBER, 2003 PROGRAMMABLE OUTPUT POWER FACTOR.

D Controls Boost Preregulator to Near-Unity Power Factor D World Wide Line Operation D Over-Voltage Protection D Accurate Power Limiting D Average Current Mode Control D Improved Noise Immunity D Improved Feed-Forward Line Regulation D Leading Edge Modulation D 150-µA Typical Start-Up Current D Low-Power BiCMOS Operation D 10.8-V to 17-V Operation D Programmable Output Voltage (Tracking Boost Topology) BLOCK.