UC2852 preregulator equivalent, high power-factor preregulator.
* Low-Cost Power Factor
Correction
* Power Factor Greater Than 0.99
* Few External Parts Required
* Controlled On-Time Boost PWM
* Zero-Current Switch.
in the 50 to 500 watt power range. Protection features of these devices include under-voltage lockout, output clamping, .
The UC1852 provides a low-cost solution to active power-factor correction (PFC) for systems that would otherwise draw high peak current pulses from AC power lines. This circuit implements zero-current switched boost conversion, producing sinusoidal i.
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