UCC28521 Datasheet PDF - Texas Instruments Advanced PFC/PWM Combination Controller Specs

UCC28521 - Advanced PFC/PWM Combination Controller

Datasheet Summary

Description

The UCC28521 and UCC28528 combination PFC/PWM controllers provide complete control functionality for any off-line power system requiring compliance with the IEC1000 3

2 harmonic reduction requirements.

Features

D Provides Control of PFC and PWM Power Stages In One Device D Trailing-Edge PFC, Trailing-Edge PWM Modulation D Built-In Sequencing of PFC and PWM Turn-On D 2-A Source and 3-A Sink Gate Drive for Both PFC and PWM Stages D Typical 16-ns Rise Time and 7-ns Fall Time into 1-nF Loads PFC Features.
Average-Current-Mode Control for Continuous Conduction Mode Operation.
Highly-Linear Multiplier for Near-Unity Power Factor.
Input Voltage Feedforward Implementation.
I.

Datasheet Details

Part number	UCC28521
Manufacturer	Texas Instruments
File Size	814.01 KB
Description	Advanced PFC/PWM Combination Controller
Datasheet	UCC28521 Datasheet
Additional preview pages of the UCC28521 datasheet.

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Full PDF Text Transcription

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UCC28521, UCC28528 SLUS608D − JANUARY 2005 REVISED NOVEMBER 2005 ADVANCED PFC/PWM COMBINATION CONTROLLER WITH TRAILINGĆEDGE/TRAILINGĆEDGE MODULATION FEATURES D Provides Control of PFC and PWM Power Stages In One Device D Trailing-Edge PFC, Trailing-Edge PWM Modulation D Built-In Sequencing of PFC and PWM Turn-On D 2-A Source and 3-A Sink Gate Drive for Both PFC and PWM Stages D Typical 16-ns Rise Time and 7-ns Fall Time into 1-nF Loads PFC Features − Average-Current-Mode Control for Continuous Conduction Mode Operation − Highly-Linear Multiplier for Near-Unity Power Factor − Input Voltage Feedforward Implementation − Improved Load Transient Response − Accurate Power Limiting − Zero Power Detect PWM Features − Peak-Current-Mode Control Operation − 1:1 PFC:PWM Frequency Option − Programmab

Published: Apr 25, 2020 |