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UCC2884 - Frequency Foldback Current Mode PWM Controller

Datasheet Summary

Description

The UCC3884 is a high performance current mode PWM controller intended for single ended switch mode power supplies.

The chip implements a frequency foldback scheme that decreases the oscillator frequency as the output voltage falls below a programmed value.

Features

  • 1.
  • Frequency Foldback Reduces Operating Frequency Under Fault Conditions.
  • Accurate Programmable Volt-Second Clamp.
  • Programmable Maximum Duty Cycle Clamp.
  • Oscillator Synchronization.
  • Overcurrent Protection.
  • Shutdown With Full Soft Start.
  • Wide Gain Bandwidth Amplifier (GBW > 2.5 MHz).
  • Current Mode Operation.
  • Precision 5-V Reference.

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Datasheet preview – UCC2884

Datasheet Details

Part number UCC2884
Manufacturer Texas Instruments
File Size 318.89 KB
Description Frequency Foldback Current Mode PWM Controller
Datasheet download datasheet UCC2884 Datasheet
Additional preview pages of the UCC2884 datasheet.

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Full PDF Text Transcription

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UCC2884 UCC3884 www.ti.com............................................................................................................................................. SLUS160C – AUGUST 1999 – REVISED NOVEMBER 2008 Frequency Foldback Current Mode PWM Controller FEATURES 1 • Frequency Foldback Reduces Operating Frequency Under Fault Conditions • Accurate Programmable Volt-Second Clamp • Programmable Maximum Duty Cycle Clamp • Oscillator Synchronization • Overcurrent Protection • Shutdown With Full Soft Start • Wide Gain Bandwidth Amplifier (GBW > 2.5 MHz) • Current Mode Operation • Precision 5-V Reference DESCRIPTION The UCC3884 is a high performance current mode PWM controller intended for single ended switch mode power supplies.
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