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UCC28220 - Dual PWM Controller

General Description

The UCC28220 and UCC28221 are a family of BiCMOS interleaved dual channel PWM controllers.

Peak current mode control is used to ensure current sharing between the two channels.

A precise maximum duty cycle clamp can be set to any value between 60% and 90% duty cycle per channel.

Key Features

  • 1 2-MHz High-Frequency Oscillator With 1-MHz Operation Per Channel.
  • Matched Internal Slope Compensation Circuits.
  • Programmable Maximum Duty Cycle Clamp 60% to 90% Per Channel.
  • Peak Current Mode Control With Cycle-by-Cycle Current Limit.
  • Current Sense Discharge Transistor for Improved Noise Immunity.
  • Accurate Line Undervoltage and Overvoltage Sense With Programmable Hysteresis.
  • Opto-Coupler Interface.
  • 110-V Internal Start-Up.

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Other Datasheets by Texas Instruments

Part Number Description
UCC28220-Q1 Dual PWM Controller
UCC28221 Dual PWM Controller
UCC28230 PWM Controller
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UCC28250 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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Product Folder Order Now Technical Documents Tools & Software Support & Community UCC28220, UCC28221 SLUS544G – SEPTEMBER 2003 – REVISED APRIL 2017 UCC2822x Interleaved Dual PWM Controller With Programmable Max Duty Cycle 1 Features •1 2-MHz High-Frequency Oscillator With 1-MHz Operation Per Channel • Matched Internal Slope Compensation Circuits • Programmable Maximum Duty Cycle Clamp 60% to 90% Per Channel • Peak Current Mode Control With Cycle-by-Cycle Current Limit • Current Sense Discharge Transistor for Improved Noise Immunity • Accurate Line Undervoltage and Overvoltage Sense With Programmable Hysteresis • Opto-Coupler Interface • 110-V Internal Start-Up JFET (UCC28221) • Operates From 12-V Supply (UCC28220) • Programmable Soft Start 2 Applications • High Output Current (50-A t