SNVU770 June   2021 LM5157 , LM5157-Q1 , LM51571-Q1

 

  1.   Trademarks
  2. 1Introduction
  3. 2Electrical Parameters
  4. 3Application Schematic
  5. 4EVM Picture
  6. 5Test Setup and Procedure
    1. 5.1 EVM Test Setup Schematic
    2. 5.2 Test Equipment
  7. 6Test Data and Performance Curves
    1. 6.1 Efficiency
    2. 6.2 Output Regulation and Cross-Regulations
    3. 6.3 Steady-State Waveforms
    4. 6.4 Start-Up Waveforms
    5. 6.5 Dynamic Responses
    6. 6.6 Short-Circuit Protection
    7. 6.7 Bode Plots
    8. 6.8 Thermal Image
  8. 7Schematic
  9. 8Bill of Materials
  10. 9EVM Layout

6.3 Steady-State Waveforms

GUID-20210317-CA0I-3HVC-XLW3-4XV5ZCW7QDM2-low.pngFigure 6-8 SW Waveform at 100% Load, Under 16-V Maximum VIN
GUID-20210317-CA0I-T5PR-T8K8-LZGS5BFV3DKT-low.pngFigure 6-10 SW Waveform at 10% Load, Under 16-V Maximum VIN
GUID-20210317-CA0I-JZKB-4KXX-ZLNLTTPKFDFN-low.pngFigure 6-12 PIV of D1 (Vo2 Rectifier) Under 100% Load and 16-V Maximum VIN
GUID-20210317-CA0I-8KJG-MW8L-8KDSZTCPSHB7-low.pngFigure 6-14 PIV of D5 (Vo3 Rectifier) Under 100% Load and 16-V Maximum VIN
GUID-20210317-CA0I-BNFX-7P3K-6NSP1KGH1S9R-low.pngFigure 6-16 Isolated Output Vo4 Ripple Voltage Under 150-mA Load
GUID-20210317-CA0I-X3XR-54NS-ND360JSPHQMB-low.pngFigure 6-9 Zoomed SW Waveform at 100% Load, Under 16-V Maximum VIN
GUID-20210317-CA0I-JX3G-3VP0-QF5NBLK303Q3-low.pngFigure 6-11 PIV of D7 (main Output Rectifier) Under 100% Load and 16-V Maximum VIN
GUID-20210317-CA0I-CK9G-9QXP-DLHL13QG4PMF-low.pngFigure 6-13 PIV of D4 (Vo3 Rectifier) Under 100% Load and 16-V Maximum VIN
GUID-20210317-CA0I-BVWH-VK14-M2XRN7PRGWGD-low.pngFigure 6-15 Main Output Vo1 Ripple Voltage Under 250-mA Load