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UCC2897 - Active Clamp PWM Controller

General Description

The UCC2897 PWM controller simplifies implementation of the various active clamp/reset and synchronous rectifier switching power topologies.

Based on the UCC2891 active-clamp controller the UCC2897 is a peak current-mode, fixedfrequency, high-performance pulse width modulator.

Key Features

  • D Ideal for Active Clamp/Reset Forward, Flyback and Synchronous Rectifier Apps D Provides Complementary Auxiliary Driver with Programmable Deadtime (Turn-On Delay) between AUX and MAIN Switches D Peak Current-Mode Control with 0.5-V Cycle-by-Cycle Current Limiting D Hiccup Mode 0.75-V Current Limit D TrueDrivet 2-A Sink, 2-A Source Outputs D 110-V Input Startup Device D Trimmed Internal Bandgap Reference for Accurate Line UV and Line OV Threshold D Programmable Slope Compensation D High-Performa.

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Other Datasheets by Texas Instruments

Part Number Description
UCC2897A Active Clamp PWM Controller
UCC2891 Active Clamp PWM Controller
UCC28910 High-Voltage Flyback Switcher
UCC28911 High-Voltage Flyback Switcher
UCC2892 Active Clamp PWM 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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UCC2897 ą SLUS591G − NOVEMBER 2003 − REVISED DECEMBER 2008 ADVANCED CURRENTĆMODE ACTIVE CLAMP PWM CONTROLLER FEATURES D Ideal for Active Clamp/Reset Forward, Flyback and Synchronous Rectifier Apps D Provides Complementary Auxiliary Driver with Programmable Deadtime (Turn-On Delay) between AUX and MAIN Switches D Peak Current-Mode Control with 0.5-V Cycle-by-Cycle Current Limiting D Hiccup Mode 0.75-V Current Limit D TrueDrivet 2-A Sink, 2-A Source Outputs D 110-V Input Startup Device D Trimmed Internal Bandgap Reference for Accurate Line UV and Line OV Threshold D Programmable Slope Compensation D High-Performance 1.