SLUSBW3D March   2014  – December 2017 UCC28630 , UCC28631 , UCC28632 , UCC28633 , UCC28634

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Schematic
      2.      Typical Application Measured Regulation
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     PIN 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 (UCC28630, UCC28631)
    5. 7.5 Thermal Information (UCC28632, UCC28633, (UCC28630, UCC28634)
    6. 7.6 Electrical Characteristics
    7. 7.7 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  High-Voltage Current Source Start-Up Operation
      2. 8.3.2  AC Input UVLO / Brownout Protection
      3. 8.3.3  Active X-Capacitor Discharge (UCC28630 and UCC28633 only)
        1. 8.3.3.1 Improved Performance with UCC28630 and UCC28633
      4. 8.3.4  Magnetic Input and Output Voltage Sensing
      5. 8.3.5  Fixed-Point Magnetic Sense Sampling Error Sources
      6. 8.3.6  Magnetic Sense Resistor Network Calculations
        1. 8.3.6.1 Step 1
        2. 8.3.6.2 Step 2
        3. 8.3.6.3 Step 3
        4. 8.3.6.4 Step 4
      7. 8.3.7  Magnetic Sensing: Power Stage Design Constraints
      8. 8.3.8  Magnetic Sense Voltage Control Loop
      9. 8.3.9  Peak Current Mode Control
      10. 8.3.10 IPEAK Adjust vs. Line
      11. 8.3.11 Primary-Side Constant-Current Limit (CC Mode)
      12. 8.3.12 Primary-Side Overload Timer (UCC28630 only)
      13. 8.3.13 Overload Timer Adjustment (UCC28630 only)
      14. 8.3.14 CC-Mode IOUT(lim) Adjustment
      15. 8.3.15 Fault Protections
      16. 8.3.16 Pin-Fault Detection and Protection
      17. 8.3.17 Over-Temperature Protection
      18. 8.3.18 External Fault Input
      19. 8.3.19 External SD Pin Wake Input (except UCC28633)
      20. 8.3.20 External Wake Input at VSENSE Pin (UCC28633 Only)
      21. 8.3.21 Mode Control and Switching Frequency Modulation
      22. 8.3.22 Frequency Dither For EMI (except UCC28632)
    4. 8.4 Device Functional Modes
      1. 8.4.1 Device Internal Key Parameters
  9. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Notebook Adapter, 19.5 V, 65 W
      2. 9.2.2 UCC28630 Application Schematic
      3. 9.2.3 Design Requirements
      4. 9.2.4 Detailed Design Procedure
        1. 9.2.4.1  Custom Design With WEBENCH® Tools
        2. 9.2.4.2  Input Bulk Capacitance and Minimum Bulk Voltage
        3. 9.2.4.3  Transformer Turn Ratio
        4. 9.2.4.4  Transformer Magnetizing Inductance
        5. 9.2.4.5  Current Sense Resistor RCS
        6. 9.2.4.6  Transformer Constraint Verification
        7. 9.2.4.7  Transformer Selection and Design
        8. 9.2.4.8  Slope Compensation Verification
        9. 9.2.4.9  Power MOSFET and Output Rectifier Selection
        10. 9.2.4.10 Output Capacitor Selection
        11. 9.2.4.11 Calculation of CC Mode Limit Point
        12. 9.2.4.12 VDD Capacitor Selection
        13. 9.2.4.13 Magnetic Sense Resistor Network Selection
        14. 9.2.4.14 Output LED Pre-Load Resistor Calculation
      5. 9.2.5 External Wake Pulse Calculation at VSENSE Pin (UCC28633 Only)
      6. 9.2.6 Energy Star Average Efficiency and Standby Power
      7. 9.2.7 Application Performance Plots
    3. 9.3 Dos and Don'ts
      1. 9.3.1 Test and Debug Recommendations
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 HV Pin
      2. 11.1.2 VDD Pin
      3. 11.1.3 VSENSE Pin
      4. 11.1.4 CS Pin
      5. 11.1.5 SD Pin
      6. 11.1.6 DRV Pin
      7. 11.1.7 GND Pin
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
        1. 12.1.1.1 Custom Design With WEBENCH® Tools
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
        1. 12.2.1.1 Related Links
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Community Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

4 Revision History

Changes from C Revision (March 2015) to D Revision

  • Added UCC28634 initial release. Go
  • Deleted text "for 65-W Nominal Power Design"Go
  • Added text "PSR design with no opto-coupler - can meet high CM isolation & surge requirements"Go
  • Added text "VDD OVP for independent indirect output OV under open-feedback fault conditions" Go
  • Added Webench links.Go
  • Added Device Comparison Table details.Go
  • Added UCC28634 to the Device Information Table. Go
  • Added UCC28634 to the Device Comparison Table.Go
  • Added UCC28634 to Thermal Information Go
  • Added UCC28634 to Electrical CharacteristicsGo
  • Added UCC28634 to Electrical CharacteristicsGo
  • Changed picture to represent added UCC28634 Go
  • Added UCC28634 Go
  • Added UCC28634 Go
  • Added UCC28634 Go
  • Changed to correct picture link Go
  • Changed to fix equation typo Go
  • Added UCC28634 Go
  • Changed to correct typo Go
  • Changed to correct typo, changed from 4.7 to 47 Go
  • Added paragraph to clarify the fault protection. Go
  • Added UCC28634 Go
  • Added text "For UCC28634, all pin-faults are non-latching." Go
  • Added UCC28634 to the table Go
  • Changed equation to fix typo Go

Changes from B Revision (March 2014) to C Revision

  • Changed "No" to "Yes" in Device Comparison Table for Part# UCC28633D, "ACTIVE-X CAPACITOR DISCHARGE" columnGo
  • Changed "Handling Ratings" table to "ESD Ratings" table. Moved Storage Temperature and Lead Temperature to Abs Max Ratings table. Go
  • Revised Figure 40Go

Changes from A Revision (January 2014) to B Revision

  • Added parts UCC28631, UCC28632 and UCC28633 to the datasheet. Go
  • Added Active X-Capacitor Discharge Function reference to the UCC28630 and UCC28633. Go
  • Added Adjustable Constant-Current (CC) Mode Limiting bullet.Go
  • Added Overload Timer reference to the UCC28630 only.Go
  • Added Frequency Dither to Ease EMI Compliance exception for the UCC28632.Go
  • Added UCC28631D, UCC28632D and UCC28633D to the Device Information Section.Go
  • Added Device Comparison Table.Go
  • Added UCC28632 Frequency dither range exception. Go
  • Added UCC28632 Dither repetition period exception.Go
  • Added UCC28633 Wake-up level (rising) exception.Go
  • Added UCC28633 SD VWAKE(rise) vs. Temperature exception.Go
  • Added text to the, "The controller operates in either DCM and CCM..." paragraph. Go
  • Changed the "Supply the device bias power during latched fault mode" bullet.Go
  • Added UCC28630 and UCC28633 only exception to the "AC sense input for X-capacitor discharge detect" bullet.Go
  • Changed HV Pin Connection diagram. Go
  • Added sentence, "In the UCC28631 and the UCC28632, the HV pin can connect to either the AC or DC side of the bridge."Go
  • Added VIN(avg) definition. Go
  • Added (UCC28630 and UCC28633 only) to the Active X-Capacitor Discharge section.Go
  • Added UCC28633 to the Improved Performance with UCC28630 section.Go
  • Added UCC28631, UCC28632 and the UCC28633 IOUT(lim) adjustment note. Go
  • Added UCC28630 only note to the Primary-Side Overload Timer section.Go
  • Added UCC28630 only note added to the Overload Timer Adjustment section. Go
  • Added CC-Mode IOUT(lim) Adjustment section. Go
  • Added UCC28631, UCC28632 and the UCC28633 to the Fault Sources and Associated Responses table.Go
  • Added The fault response (latching or auto recovery) depends on the device variant, per Table 3. Go
  • Added The fault response (latching or recovery) depends on the device variant, per Table 3. Go
  • Added UCC28633 exception to the External SD Pin Wake Input section.Go
  • Added External Wake Input at VSENSE Pin (UCC28633 Only) sectionGo
  • Added UCC28632 exception to the Frequency Dither For EMI section.Go
  • Added External Wake Pulse Calculation at VSENSE Pin (UCC28633 Only) section.Go

Changes from * Revision (January 2014) to A Revision

  • Changed marketing status from Product Preview to Production Data.Go