SLVUCE3 april   2023 TPS54KB20

 

  1.    TPS54KB20EVM 25-A, Regulator Evaluation Module
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Background
    2. 1.2 Before You Begin
    3. 1.3 Performance Characteristics Summary
  4. 2Configurations and Modifications
    1. 2.1 Output Voltage
    2. 2.2 Frequency and Operation Mode Setting (MSEL Pin)
  5. 3Test Setup and Results
    1. 3.1 Input/Output Connections
    2. 3.2 Efficiency
    3. 3.3 Output Voltage Regulation
    4. 3.4 Load Transient and Loop Response
    5. 3.5 Output Voltage Ripple
    6. 3.6 Start-up and Shutdown with EN
    7. 3.7 Thermal Performance
  6. 4Board Layout
    1. 4.1 Layout
  7. 5Schematic and Bill of Materials
    1. 5.1 Schematic
    2. 5.2 Bill of Materials

3.5 Output Voltage Ripple

Figure 3-13 through Figure 3-16 show the TPS54KB20EVM output voltage ripple. The load currents are no load and 6 A. VIN = 12 V. The VOUT voltage is measured using TP10 for U1 and TP29 for U2.

GUID-20230405-SS0I-1KMM-Z4NX-0JRN1ZB1XHRN-low.svgFigure 3-13 U1 Output Ripple – 10-mA Load, Skip-Mode
GUID-20230405-SS0I-CF7V-B7GT-SWFDBRGKJN6S-low.svgFigure 3-15 U2 Output Ripple – 10-mA Load, Skip-Mode
GUID-20230404-SS0I-PKNN-GLG7-684LMNR7PRF3-low.svgFigure 3-14 U1 Output Ripple – 25-A Load
GUID-20230405-SS0I-94HK-8ZDJ-TTVGLM5DJFZM-low.svgFigure 3-16 U2 Output Ripple – 25-A Load