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UC1854A - ADVANCED HIGH-POWER FACTOR PREREGULATOR

Datasheet Summary

Description

The UC3854A/B products are pin compatible enhanced versions of the UC3854.

Like the UC3854, these products provide all of the functions necessary for active power factor corrected preregulators.

Features

  • 1.
  • Controls Boost PWM to Near-Unity Power Factor.
  • Limits Line Current Distortion To.

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Datasheet preview – UC1854A

Datasheet Details

Part number UC1854A
Manufacturer Texas Instruments
File Size 1.89 MB
Description ADVANCED HIGH-POWER FACTOR PREREGULATOR
Datasheet download datasheet UC1854A Datasheet
Additional preview pages of the UC1854A datasheet.

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Full PDF Text Transcription

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www.ti.com UC1854A UC2854A, UC2854B UC3854A, UC3854B SLUS329E – MONTH 2003 – REVISED JANUARY 2008 ADVANCED HIGH-POWER FACTOR PREREGULATOR FEATURES 1 • Controls Boost PWM to Near-Unity Power Factor • Limits Line Current Distortion To <3% • World-Wide Operation Without Switches • Accurate Power Limiting • Fixed-Frequency Average Current-Mode Control • High Bandwidth (5 MHz), Low-Offset Current Amplifier • Integrated Current- and Voltage-Amplifier Output Clamps • Multiplier Improvements: Linearity, 500 mV VAC Offset (Eliminates External Resistor), 0 V to 5 V Multout Common-Mode Range • VREF GOOD Comparator • Faster and Improved Accuracy ENABLE Comparator • UVLO Options (16 V/10 V or 10.5 V/10 V) • 300-µA Start-Up Supply Current BLOCK DIAGRAM VCC (A) 16 V / 10 V (B) 10.
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