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UC1853 Datasheet High Power Factor Preregulator

Manufacturer: Unitrode

Overview: High Power Factor Preregulator UC1853 UC2853 UC3853.

Datasheet Details

Part number UC1853
Manufacturer Unitrode
File Size 395.35 KB
Description High Power Factor Preregulator
Download UC1853 Download (PDF)

General Description

The UC3853 provides simple, yet high performance active power factor correction.

Using the same control technique as the UC1854, this 8-pin device exploits a simplified architecture and an internal oscillator to minimize external component count.

The UC3853 incorporates a precision multiplier/squarer/divider circuit, voltage and current loop error amplifiers, and a precision voltage reference to implement average current mode control with RMS line voltage compensation.

Key Features

  • Complete 8-pin Power Factor Solution.
  • Reduced External Components.
  • RMS Line Voltage Compensation.
  • Precision Multiplier/Squarer/Divider.
  • Internal 75kHz Synchronizable Oscillator.
  • Average Current Mode PWM Control.
  • Overvoltage Protection Comparator.
  • High Current, Clamped Gate Driver.

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