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UCC28521 - Advanced PFC/PWM Combination Controller

General 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.

Key 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.

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Other Datasheets by Texas Instruments

Part Number Description
UCC28528 Advanced PFC/PWM Combination Controller
UCC28500 BiCMOS PFC/PWM Combination Controller
UCC28501 BiCMOS PFC/PWM Combination Controller
UCC28502 BiCMOS PFC/PWM Combination Controller
UCC28503 BiCMOS PFC/PWM Combination Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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