SLUSBQ5D November   2013  – July 2016 UCC28180

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (Continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1  Soft Start
      2. 8.3.2  System Protection
      3. 8.3.3  VCC Undervoltage LockOut (UVLO)
      4. 8.3.4  Output Overvoltage Protection (OVP)
      5. 8.3.5  Open Loop Protection/Standby (OLP/Standby)
      6. 8.3.6  ISENSE Open-Pin Protection (ISOP)
      7. 8.3.7  ICOMP Open-Pin Protection (ICOMPP)
      8. 8.3.8  FAULT Protection
      9. 8.3.9  Output Overvoltage Detection (OVD), Undervoltage Detection (UVD) and Enhanced Dynamic Response (EDR)
      10. 8.3.10 Overcurrent Protection
      11. 8.3.11 Soft Overcurrent (SOC)
      12. 8.3.12 Peak Current Limit (PCL)
      13. 8.3.13 Current Sense Resistor, RISENSE
      14. 8.3.14 ISENSE Pin
      15. 8.3.15 Gate Driver
      16. 8.3.16 Current Loop
      17. 8.3.17 ISENSE and ICOMP Functions
      18. 8.3.18 Pulse Width Modulator
      19. 8.3.19 Control Logic
      20. 8.3.20 Voltage Loop
      21. 8.3.21 Output Sensing
      22. 8.3.22 Voltage Error Amplifier
      23. 8.3.23 Non-Linear Gain Generation
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1  Current Calculations
        2. 9.2.2.2  Switching Frequency
        3. 9.2.2.3  Bridge Rectifier
        4. 9.2.2.4  Inductor Ripple Current
        5. 9.2.2.5  Input Capacitor
        6. 9.2.2.6  Boost Inductor
        7. 9.2.2.7  Boost Diode
        8. 9.2.2.8  Switching Element
        9. 9.2.2.9  Sense Resistor
        10. 9.2.2.10 Output Capacitor
        11. 9.2.2.11 Output Voltage Set Point
        12. 9.2.2.12 Loop Compensation
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
    1. 10.1 Bias Supply
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support . .
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • 8-Pin Solution (No AC Line Sensing Needed)
  • Wide Range Programmable Switching Frequency (18 kHz to 250 kHz for MOSFET and IGBT-based PFC Converters)
  • Trimmed Current Loop Circuits for Low iTHD
  • Reduced Current Sense Threshold (Minimizes Power Dissipation in Shunt)
  • Average Current-Mode Control
  • Soft Over Current and Cycle-by-Cycle Peak Current Limit Protection
  • Output Overvoltage Protection With Hysteresis Recovery
  • Audible Noise Minimization Circuitry
  • Open Loop Detection
  • Enhance Dynamic Response During Output Overvoltage and Undervoltage Conditions
  • Maximum Duty Cycle of 96% (Typical)
  • Burst Mode for No Load Regulation
  • VCC UVLO, Low ICC Start-Up (< 75 µA)

2 Applications

  • Universal AC Input, CCM Boost PFC Converters in 100-W to Few-kW Range
  • Server and Desktop Power Supplies
  • White Good Appliances (Air Conditioners, Refrigerators)
  • Industrial Power Supplies (DIN Rail)
  • Flat Panel (PDP, LCD, and LED) TVs

3 Description

The UCC28180 is a flexible and easy-to-use, 8-pin, active Power-Factor Correction (PFC) controller that operates under Continuous Conduction Mode (CCM) to achieve high Power Factor, low current distortion and excellent voltage regulation of boost pre-regulators in AC - DC front-ends. The controller is suitable for universal AC input systems operating in 100-W to few-kW range with the switching frequency programmable between 18 kHz to 250 kHz, to conveniently support both power MOSFET and IGBT switches. An integrated 1.5-A and 2-A (SRC-SNK) peak gate drive output, clamped internally at 15.2 V (typical), enables fast turn-on, turn-off, and easy management of the external power switch without the need for buffer circuits.

Low-distortion wave shaping of the input current using average current mode control is achieved without input line sensing, reducing the external component count. In addition, the controller features reduced current sense thresholds to facilitate the use of small-value shunt resistors for reduced power dissipation, especially important in high-power systems. To enable low current distortion, the controller also features trimmed internal current loop regulation circuits for eliminating associated inaccuracies.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
UCC28180 SOIC (8) 4.90 mm × 3.91 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

space

space

space

Typical Application Schematic

UCC28180 alt_slusbq5.gif