SLUSCA8A February   2016  – February 2016 UCC28704

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
   3. 7.3 Feature Description
      1. 7.3.1 Detailed Pin Description
         1. 7.3.1.1 VDD (Device Bias Voltage Supply)
         2. 7.3.1.2 GND (Ground)
         3. 7.3.1.3 VS (Voltage-Sense)
         4. 7.3.1.4 DRV (Gate Drive)
         5. 7.3.1.5 CS (Current Sense)
         6. 7.3.1.6 NTC/SU (NTC Thermistor Shutdown and External Start Up Control)
      2. 7.3.2 Primary-Side Regulation (PSR)
      3. 7.3.3 Primary-Side Constant Voltage (CV) Regulation
      4. 7.3.4 Primary-Side Constant Current (CC) Regulation
      5. 7.3.5 Valley-Switching and Valley-Skipping
      6. 7.3.6 Start-Up Operation
         1. 7.3.6.1 Initial Power-On with a Start-Up Resistor
         2. 7.3.6.2 Initial Power-On with A Depletion-Mode FET
      7. 7.3.7 Fault Protection
      8. 7.3.8 Constant Current Under-Voltage Protection
      9. 7.3.9 Load Transient Response
   4. 7.4 Device Functional Modes
8. 8 Applications 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 VDD Capacitance, CDD
         2. 8.2.2.2 VDD Start-Up Resistance, RSTR
         3. 8.2.2.3 Input Bulk Capacitance and Minimum Bulk Voltage
         4. 8.2.2.4 Transformer Turns Ratio, Inductance, Primary-Peak Current
         5. 8.2.2.5 Transformer Parameter Verification
         6. 8.2.2.6 VS Resistor Divider, Line Compensation, and NTC
         7. 8.2.2.7 Standby Power Estimate
         8. 8.2.2.8 Output Capacitance
         9. 8.2.2.9 Design Considerations in Using with Synchronous Rectifiers
      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 Device Nomenclature
          1. 11.1.1.1  Capacitance Terms in Farads
          2. 11.1.1.2  Duty Cycle Terms
          3. 11.1.1.3  Frequency Terms in Hertz
          4. 11.1.1.4  Current Terms in Amperes
          5. 11.1.1.5  Current and Voltage Scaling Terms
          6. 11.1.1.6  Transformer Terms
          7. 11.1.1.7  Power Terms in Watts
          8. 11.1.1.8  Resistance Terms in Ω
          9. 11.1.1.9  Timing Terms in Seconds
          10. 11.1.1.10 Voltage Terms in Volts
          11. 11.1.1.11 AC Voltage Terms in VRMS
          12. 11.1.1.12 Efficiency Terms
    2. 11.2 Documentation Support
       1. 11.2.1 Related Documentation
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
12. 12Mechanical, Packaging, and Orderable Information