TIDUBE1D January   2016  – August 2024

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Highlighted Products and Key Advantages
      1. 2.2.1 UCC28180 – PFC Controller
      2. 2.2.2 UCC27524 – Dual Low-Side Gate Driver
      3. 2.2.3 UCC28881 – 700-V Off-Line Converter
    3. 2.3 System Design Theory
      1. 2.3.1 Selecting Switching Frequency
      2. 2.3.2 Calculating Output Capacitance
      3. 2.3.3 Calculating PFC Choke Inductor
      4. 2.3.4 Selecting Switching Element
      5. 2.3.5 Boost Follower Control Circuit
      6. 2.3.6 Bias Power
      7. 2.3.7 On-Off Switch
      8. 2.3.8 Thermal Design
  9. 3Hardware, Testing Requirements, and Test Results
    1. 3.1 Required Hardware
      1. 3.1.1 Test Conditions
      2. 3.1.2 Recommended Equipment
      3. 3.1.3 Procedure
    2. 3.2 Test Results
      1. 3.2.1 Performance Data
        1. 3.2.1.1 Efficiency and iTHD
        2. 3.2.1.2 Standby Power and Output Voltage
      2. 3.2.2 Performance Curves
        1. 3.2.2.1 Efficiency Curve
        2. 3.2.2.2 Voltage Follower Performance
      3. 3.2.3 Functional Waveforms
        1. 3.2.3.1 Power On Sequence
        2. 3.2.3.2 Inrush Current Protection
        3. 3.2.3.3 Switching Node
        4. 3.2.3.4 Waveform Under 3.5kW, 230VAC
      4. 3.2.4 Thermal Measurements
  10. 4Design Files
    1. 4.1 Schematics
    2. 4.2 Bill of Materials
  11. 5Documentation Support
  12. 6Trademarks
  13. 7About the Author
  14. 8Revision History

1.1 Key System Specifications

Table 1-1 Key System Specifications
PARAMETERSYMBOLTEST CONDITIONSMINNOMMAXUNIT
INPUT CHARACTERISTICS
Input voltageVIN—150230270V AC
FrequencyFAC—47—64Hz
Power factorPFVIN = nom, IOUT = max—0.99——
Input currentIINVIN = nom, IOUT = max—20—A
OUTPUT CHARACTERISTICS
Output voltageVOUTVIN = nom, IOUT = min to max—380—V
Output currentIOUTVIN = 190-V AC to max0—9A
Output powerPOUTVIN = 190-V AC to max——3.5kW
Line regulationVIN = min to max, IOUT = nom——2%
Load regulationVIN = nom, IOUT = min to max——3%
Output voltage rippleVOUT_RIPPLEVIN = nom, IOUT = max——17.5V
Output overvoltageVOVPIOUT = min to max——430V
Output overcurrentIOCPVIN = min to max12——A
SYSTEM CHARACTERISTICS
Switching frequencyfSW——45—kHz
Peak efficiencyηPEAK

Vin=230VAC, Vout=382.54VDC, Pout=1386 W

——98.128%
Operation temperatureTNOMWith air flow–25—65°C