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UC3855B Datasheet High Performance Power Factor Preregulator

Manufacturer: UNITRODE

Overview: High Performance Power Factor Preregulator application INFO available UC2855A/B.

This datasheet includes multiple variants, all published together in a single manufacturer document.

Datasheet Details

Part number UC3855B
Manufacturer UNITRODE
File Size 1.28 MB
Description High Performance Power Factor Preregulator
Datasheet UC3855B UC3855A Datasheet (PDF)

General Description

The UC3855A/B provides all the control

Key Features

  • Controls Boost PWM to Near Unity Power Factor.
  • Fixed Frequency Average Current Mode Control Minimizes Line Current Distortion.
  • Built-in Active Snubber (ZVT) allows Operation to 500kHz, improved EMI and Efficiency.
  • Inductor Current Synthesizer allows Single Current Transformer Current Sense for Improved Efficiency and Noise Margin.
  • Accurate Analog Multiplier with Line Compensator allows for Universal Input Voltage Operation.
  • High Bandwidth (5.

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UC3855B Distributor