SLUU274A May   2007  – January 2022 TPS40193

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Description
    2. 1.2 Applications
    3. 1.3 Features
  3. 2TPS40193EVM-001 Electrical Performance Specifications
  4. 3Schematic
  5. 4General Configuration and Description
    1. 4.1 Adjusting Output Voltage (R7)
    2. 4.2 Adjusting Short-Circuit Protection (R9)
    3. 4.3 Disable Jumper (JP1)
    4. 4.4 Test Point Descriptions
      1. 4.4.1 Input Voltage Monitoring (TP1, TP2)
      2. 4.4.2 Power-Good (TP3, TP4, TP5)
      3. 4.4.3 Compensation and Initialization (TP6)
      4. 4.4.4 Switching Waveforms (TP7, TP8, TP9, TP10)
      5. 4.4.5 Loop Analysis (TP11, TP12, TP13, TP14)
      6. 4.4.6 Output Voltage and Monitoring (TP15, TP16)
      7. 4.4.7 Pre-Bias Input (TP17)
  6. 5Test Setup
    1. 5.1 Equipment
      1. 5.1.1 Voltage Source
      2. 5.1.2 Meters
      3. 5.1.3 Loads
      4. 5.1.4 Oscilloscope
      5. 5.1.5 Recommended Wire Gauge
      6. 5.1.6 Other
    2. 5.2 Equipment Setup
    3. 5.3 Start-Up/Shutdown Procedure
    4. 5.4 Output Ripple Voltage Measurement Procedure
    5. 5.5 Control Loop Gain and Phase Measurement Procedure
    6. 5.6 Equipment Shutdown
  7. 6TPS40193EVM-001 Typical Performance Data and Characteristic Curves
    1. 6.1 Efficiency
    2. 6.2 Line and Load Regulation
    3. 6.3 Output Voltage Ripple
    4. 6.4 Switch Node
    5. 6.5 Control Loop Bode Plot
      1. 6.5.1 Low Line (VIN = 8 V)
      2. 6.5.2 High Line (VIN = 14 V)
  8. 7EVM Assembly Drawings and Layout
  9. 8Bill of Materials
  10. 9Revision History

5.4 Output Ripple Voltage Measurement Procedure

Follow these steps to measure the output ripple voltage on the TPS40193EVM-001.

  1. Increase VIN from 0 VDC to 12 VDC.
  2. Adjust LOAD1 to desired load between 0 ADC and 10 ADC.
  3. Adjust VIN to desired load between 8.0 VDC and 14 VDC.
  4. Connect oscilloscope probe to TP15 and TP16 as shown in Figure 5-2.
  5. Measure output ripple.
  6. Decrease VIN to 0 VDC.
  7. Decrease LOAD1 to 0 A.