UC1854 preregulator equivalent, high-power factor preregulator.
*1 Control Boost PWM to 0.99 Power Factor
* Limit Line-Current Distortion to < 5%
* World-Wide Operation Without Switches
* Feedforward Line Regulation
* Offline AC-to-DC Converters
* Medical, Industrial, Telecom, and IT Power
Supplies
* Uninterruptible Power .
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 .
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