SLVU356A January   2010  – October 2021 TPS54290 , TPS54291

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Description
    2. 1.2 Applications
    3. 1.3 Features
  3. 2TPS54291EVM-431 Electrical Performance Specifications
  4. 3Schematic
    1. 3.1 Enable Jumpers (JP1 and JP2)
    2. 3.2 Error Amplifier Outputs
    3. 3.3 Test Point Descriptions
      1. 3.3.1 Input Voltage Monitoring (TP1 and TP2)
      2. 3.3.2 Channel 1 Output Voltage Monitoring (TP3 and TP4)
      3. 3.3.3 Channel 1 Loop Analysis (TP5, TP6, TP7, and TP8)
      4. 3.3.4 Channel 1 Switching Waveforms (TP9 and TP10)
      5. 3.3.5 TPS54291 IC Ground (TP11)
      6. 3.3.6 Channel 2 Switching Waveforms (TP12 and TP13)
      7. 3.3.7 Channel 2 Loop Analysis (TP14, TP15, TP16, and TP17)
      8. 3.3.8 Output Voltage Monitoring (TP18 and TP19)
  5. 4Test Setup
    1. 4.1 Equipment
      1. 4.1.1 Voltage Source (VIN)
      2. 4.1.2 Meters
      3. 4.1.3 Loads
      4. 4.1.4 Oscilloscope
      5. 4.1.5 Recommended Wire Gauge
      6. 4.1.6 Other
    2. 4.2 Equipment Setup
      1. 4.2.1 Procedure
      2. 4.2.2 Diagram
    3. 4.3 Start-Up/Shutdown Procedure
    4. 4.4 Output Ripple Voltage Measurement Procedure
    5. 4.5 Control Loop Gain and Phase Measurement Procedure
    6. 4.6 Equipment Shutdown
  6. 5TPS54291EVM-431 Typical Performance Data and Characteristic Curves
    1. 5.1 Efficiency
    2. 5.2 Line and Load Regulation
    3. 5.3 Switch Node and Output Ripple Voltage
  7. 6EVM Assembly Drawings and Layout
  8. 7List of Materials
  9. 8Revision History

3.3 Test Point Descriptions

Table 3-1 Test Point Descriptions
TEST POINTLABELUSESECTION
TP1VINMonitor Input VoltageSection 3.3.1
TP2GNDGround for Input VoltageSection 3.3.1
TP3VOUT1Monitor VOUT1 VoltageSection 3.3.2
TP4GNDGround for VOUT1 VoltageSection 3.3.2
TP5GNDGround for VOUT1 Channel B Loop MonitoringSection 3.3.3
TP6CHBVOUT1 Channel B for Loop MonitoringSection 3.3.3
TP7GNDGround for VOUT1 Channel A Loop MonitoringSection 3.3.3
TP8CHAVOUT1 Channel B for Loop MonitoringSection 3.3.3
TP9SW1Monitor Switching Node of Channel 1Section 3.3.4
TP10GNDGround for Switch Node of Channel 1Section 3.3.4
TP11IC_GNDMonitor IC GroundSection 3.3.5
TP12SW2Monitor Switching Node of Channel 2Section 3.3.6
TP13GNDGround for Switch Node of Channel 2Section 3.3.6
TP14CHAVOUT2 Channel A for Loop MonitoringSection 3.3.7
TP15GNDGround for VOUT2 Channel A Loop MonitoringSection 3.3.7
TP16CHBVOUT2 Channel B for Loop MonitoringSection 3.3.7
TP17GNDGround for VOUT2 Channel B Loop MonitoringSection 3.3.7
TP18VOUT2Monitor VOUT2 VoltageSection 3.3.8
TP19GNDGround for VOUT2 VoltageSection 3.3.8