UC1854 Datasheet (Texas Instruments) - High-Power Factor Preregulator

UC1854, High-Power Factor Preregulator

The UC1854 provides active-power factor correction for power systems that otherwise would draw nonsinusoidal current from sinusoidal power lines.

This device implements all the control functions necessary to build a power supply capable of optimally using available power-line current while minimizin

UC1854 Features

* 1 Control Boost PWM to 0.99 Power Factor

* Limit Line-Current Distortion to < 5%

* World-Wide Operation Without Switches

* Feedforward Line Regulation

* Average Current-Mode Control

* Low Noise Sensitivity

* Low Startup Supply Current