SLUS646K November   2005  – August 2015 UCC28600

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
      1. 7.2.1 Terminal Components
    3. 7.3 Feature Description
      1. 7.3.1 Oscillator
      2. 7.3.2 Status
      3. 7.3.3 Fault Logic
      4. 7.3.4 Protection Features
      5. 7.3.5 Overtemperature
      6. 7.3.6 Cycle-by-Cycle Power Limit
      7. 7.3.7 Primary Current Protection
      8. 7.3.8 Over-Voltage Protection
      9. 7.3.9 Undervoltage Lockout
    4. 7.4 Device Functional Modes
      1. 7.4.1 Quasi-Resonant and DCM Control
      2. 7.4.2 Frequency Foldback Mode Control
      3. 7.4.3 Green-Mode Control
      4. 7.4.4 Operating Mode Programming
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input Bulk Capacitor and Minimum Bulk Voltage
        2. 8.2.2.2 Transformer Turns Ratio and Primary Inductance
        3. 8.2.2.3 Non-Ideal Current Sense Value
        4. 8.2.2.4 Snubber Damping
        5. 8.2.2.5 Open Loop Test Circuit
      3. 8.2.3 Application Curves
    3. 8.3 Do's and Don'ts
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
      2. 11.2.2 Related Products
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Green-Mode Controller With Advanced Energy Saving Features
  • Quasi-Resonant Mode Operation for Reduced EMI and Low Switching Losses (Low-Voltage Valley Switching)
  • Low Standby Current for Minimum System No-Load Power Consumption
  • Low Start-up Current: 25-μA Maximum
  • Programmable Line and Load Over-Voltage Protection
  • Internal Over-Temperature Protection
  • Current Limit Protection
    • Cycle-by-Cycle Power Limit
    • Primary-Side Over-Current Hiccup Restart Mode
  • 1-A Sink, –0.75-A Source TrueDrive™ Gate Drive Output
  • Programmable Soft-Start
  • Green-Mode Status Pin (PFC Disable Function)

2 Applications

  • Bias Supplies for LCD-Monitors, LCD-TV, PDP-TV, and Set Top Boxes
  • AC-to-DC Adapters and Off-Line Battery Chargers
  • Energy Efficient Power Supplies up to 200 W

3 Description

The UCC28600 is a PWM controller with advanced energy features to meet stringent world-wide energy efficiency requirements.

UCC28600 integrates built-in advanced energy saving features with high-level protection features to provide cost-effective solutions for energy-efficient power supplies. UCC28600 incorporates frequency fold-back and green-mode operation to reduce the switching losses at light-load and no-load conditions.

UCC28600 is available in the 8-pin SOIC package. Operating junction temperature range is –40°C to +105°C.

The UCC28600 Design Calculator, (SLVC104), located in the Tools and Software section of the UCC28600 product folder, provides a user-interactive iterative process for selecting recommended component values for an optimal design.

Device Information (1)

PART NUMBER PACKAGE BODY SIZE (NOM)
UCC28600 SOIC (8) 4.90 mm × 3.91 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Diagram

UCC28600 v05008des_lus646.gif