UC3854 Datasheet - Texas Instruments

UC3854, High-Power Factor Preregulator

Product Folder Order Now Technical Documents Tools & Software Support & Community UC1854, UC2854, UC3854 SLUS336A * JUNE 1998 * R.
The UC1854 provides active-power factor correction for power systems that otherwise would draw nonsinusoidal current from sinusoidal power lines.

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

Applications

* Offline AC-to-DC Converters
* Medical, Industrial, Telecom, and IT Power Supplies
* Uninterruptible Power Supplies (UPS)

UC3854-etcTI.pdf