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UCC28220D Dual Interleaved Switching Controller IC

৳ 250.00

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The UCC28220D and UCC28221D are a family of BiCMOS interleaved dual channel PWM controllers. Peak current mode control is used to ensure current sharing between the two channels.

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The UCC28220D and UCC28221D 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. The UCC28220 has an UVLO turn on threshold of 10V for use in 12V supplies while UCC28221 has a turn on threshold of 13V for systems needing wider UVLO hysteresis. Both have 8V turn off thresholds.

Additional features include a programmable internal slope compensation with a special circuit which is used to ensure exactly the same slope is added to each channel and a high-voltage 110-V internal JFET for easier start-up for the wider hysteresis UCC28221 version. The UCC28220 is available in both 16-pin SOIC and low-profile TSSOP packages.

The UCC28221 also comes in 16-pin SOIC package and a slightly larger 20-pin TSSOP package to allow for high-voltage pin spacing to meet UL1950 creepage clearance safety requirements.

 

Features:

  1. 2-MHz High-Frequency Oscillator With 1-MHz Operation Per Channel
  2. Matched Internal Slope Compensation Circuits
  3. Programmable Maximum Duty Cycle Clamp 60% to 90% Per Channel
  4. Peak Current Mode Control With Cycle-by-Cycle Current Limit
  5. Current Sense Discharge Transistor for Improved Noise Immunity
  6. Accurate Line Undervoltage and Overvoltage Sense With Programmable Hysteresis
  7. Opto-Coupler Interface
  8. 110-V Internal Start-Up JFET (UCC28221)
  9. Operates From 12-V Supply (UCC28220)
  10. Programmable Soft Start

Applications:

  1. High Output Current (50-A to 100-A) Converters
  2. Maximum Power Density Designs
  3. High-Efficiency 48-V Input With Low Output Ripple Converters
  4. High-Power Offline, Telecom, and Datacom Power Supplies

Packing List:

1Pc * UCC28220D Dual Interleaved Switching Controller IC

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