TIDT174A april   2020  – june 2023

 

  1.   1
  2.   Description
  3. 1System Specification
    1. 1.1 Board Dimension:
    2. 1.2 Input Characteristics
    3. 1.3 Output Characteristics
  4. 2Testing and Results
    1. 2.1  Board Photos
      1. 2.1.1 Top Side
      2. 2.1.2 Bottom Side
    2. 2.2  Efficiency Data
      1. 2.2.1 115VAC/60Hz Efficiency Measurement Data (without Bias)
      2. 2.2.2 230VAC/50Hz Efficiency Measurement Data (without Bias)
    3. 2.3  THD and PF
    4. 2.4  Thermal Images
      1. 2.4.1 115VAC/60Hz, 1000W, Top
      2. 2.4.2 115VAC/60Hz, 1000W, Side
      3. 2.4.3 115VAC/60Hz, 1000W, Mosfet
      4. 2.4.4 230VAC/50Hz, 1500W, Top
      5. 2.4.5 230VAC/50Hz, 1500W, Side
      6. 2.4.6 230VAC/50Hz, 1500W, MOSFET
    5. 2.5  Startup
      1. 2.5.1 115VAC/60Hz – No Load
      2. 2.5.2 115VAC/60Hz 200W
      3. 2.5.3 230VAC/50Hz – No Load
      4. 2.5.4 230VAC/50Hz 200W
    6. 2.6  Input Current Waveform
      1. 2.6.1 115VAC/60Hz 500W
      2. 2.6.2 115VAC/60Hz 1000W
      3. 2.6.3 230VAC/50Hz 750W
      4. 2.6.4 230VAC/50Hz 1500W
    7. 2.7  Load Transient
      1. 2.7.1 115VAC/60Hz 0W -> 1000W
      2. 2.7.2 115VAC/60Hz 1000W -> 0W
      3. 2.7.3 230VAC/50Hz 0W -> 1000W
      4. 2.7.4 230VAC/50Hz 1000W -> 0W
    8. 2.8  Line Transient
      1. 2.8.1 230VAC -> 115VAC 700W
      2. 2.8.2 115VAC -> 230VAC 700W
      3. 2.8.3 230VAC -> 115VAC 0W
      4. 2.8.4 115VAC -> 230VAC 0W
    9. 2.9  AC Frequency Transient
      1. 2.9.1 47Hz -> 63Hz 1000W
      2. 2.9.2 63Hz -> 47Hz 1000W
    10. 2.10 About the Authors

Description

This reference design is an AC switch bridgeless power factor correction (PFC) operates with continuous conduction mode (CCM). It takes universal AC-input voltage (90 VAC to 264 VAC), provides 390-V, 1000-W low-line output and 1500 W high-line output. This design uses the UCD3138 digital controller and UCC21220 isolated gate driver. This design achieves 97.1% peak efficiency at 115-VAC input and 98.3% peak efficiency at 230-VAC input. The total harmonic distortion (THD) is less than 1.2% at 115 VAC, 1000 W and less than 2% at 230 VAC, 1500 W. The power factor is greater than 0.997 for both 115 VAC and 230 VAC at full load.

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