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UCC38503 - BiCMOS PFC/PWM Combination Controller

This page provides the datasheet information for the UCC38503, a member of the UCC38500 BiCMOS PFC/PWM Combination Controller family.

Datasheet Summary

Description

The UCC2850x family provides all of the control functions necessary for an active power-factorcorrected preregulator and a second-stage dc-to- dc converter.

Features

  • D Combines PFC and Downstream Converter Controls D Controls Boost Preregulator to Near-Unity Power Factor D Accurate Power Limiting D Improved Feedforward Line Regulation D Peak Current-Mode Control in Second Stage D Programmable Oscillator D Leading-Edge/Trailing-Edge Modulation for Reduced Output Ripple D Low Start-up Supply Current D Synchronized Second Stage Start-Up, with Programmable Soft-start D Programmable Second Stage Shutdown.

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Datasheet preview – UCC38503

Datasheet Details

Part number UCC38503
Manufacturer Texas Instruments
File Size 1.36 MB
Description BiCMOS PFC/PWM Combination Controller
Datasheet download datasheet UCC38503 Datasheet
Additional preview pages of the UCC38503 datasheet.

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Full PDF Text Transcription

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UCC28500, UCC28501, UCC28502, UCC28503 UCC38500, UCC38501, UCC38502, UCC38503 SLUS419C − AUGUST 1999 − REVISED NOVEMBER 2001 BiCMOS PFC/PWM COMBINATION CONTROLLER FEATURES D Combines PFC and Downstream Converter Controls D Controls Boost Preregulator to Near-Unity Power Factor D Accurate Power Limiting D Improved Feedforward Line Regulation D Peak Current-Mode Control in Second Stage D Programmable Oscillator D Leading-Edge/Trailing-Edge Modulation for Reduced Output Ripple D Low Start-up Supply Current D Synchronized Second Stage Start-Up, with Programmable Soft-start D Programmable Second Stage Shutdown DESCRIPTION The UCC2850x family provides all of the control functions necessary for an active power-factorcorrected preregulator and a second-stage dc-to- dc converter.
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