SLUU254A December   2006  – January 2022 TPS40075

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Description
    2. 1.2 Applications
    3. 1.3 Features
  3. 2TPS40075EVM-001 Electrical Performance Specifications
  4. 3Schematic
    1. 3.1 Adjusting Output Voltage (R5 and R6)
    2. 3.2 Using Remote Sense (J3)
    3. 3.3 5-V Input Operation (R10 and R15)
    4. 3.4 Enable
  5. 4Test Setup
    1. 4.1 Equipment
      1. 4.1.1 Voltage Source
      2. 4.1.2 Meters
      3. 4.1.3 Loads
        1. 4.1.3.1 LOAD1
      4. 4.1.4 Recommended Wire Gauge
        1. 4.1.4.1 V12V_IN to J1
        2. 4.1.4.2 J2 to LOAD1 (Power)
        3. 4.1.4.3 J3 to LOAD1 (Remote Sense)
      5. 4.1.5 Other
        1. 4.1.5.1 Fan
        2. 4.1.5.2 Oscilloscope
    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 Equipment Shutdown
  6. 5TPS40075EVM Typical Performance Data and Characteristic Curves
  7. 6EVM Assembly Drawings and Layout
  8. 7List of Materials
  9. 8Revision History

4.2.1 Procedure

  1. Working at an ESD workstation, make sure that any wrist straps, bootstraps, or mats are connected referencing the user to earth ground before power is applied to the EVM. An electrostatic smock and safety glasses should also be worn.
  2. Prior to connecting the DC input source, V12V_IN, it is advisable to limit the source current from V12V_IN to 5.0-A maximum. Make sure V12V_IN is initially set to 0 V and connected as shown in Figure 4-1.
  3. Connect the ammeter A1 (0-A to 5-A range) between V12V_IN and J1 as shown in Figure 4-1.
  4. Connect voltmeter V1 to TP1 and TP2 as shown in Figure 4-1.
  5. Connect LOAD1 to J2 as shown in Figure 3-1. Set LOAD1 to constant current mode to sink 0 ADC before V12V_IN is applied.
  6. Connect voltmeter, V2 across TP17 and TP18 as shown in Figure 4-1.
  7. Connect an oscilloscope probe to TP16 and TP15 as shown in Figure 4-2.
  8. Place a fan as shown in Figure 4-1. Turn it on, making sure air is flowing across the EVM.