SLUU224A May   2005  – March 2022 TPS40100

 

  1.   Trademarks
  2. 1Introduction
  3. 2Description
    1. 2.1 Applications
    2. 2.2 Features
      1. 2.2.1 Using Remote Sense (J3)
      2. 2.2.2 Simultaneous Tracking (J3)
      3. 2.2.3 Enable (SW2)
      4. 2.2.4 Margin Up/Down (J4)
      5. 2.2.5 Power Good (J1)
      6. 2.2.6 Synchronization (J1)
  4. 3Electrical Performance Specifications
  5. 4Schematic
  6. 5Test Setup
    1. 5.1 Equipment
      1. 5.1.1 Voltage Source (VIN)
      2. 5.1.2 Meters
      3. 5.1.3 Loads (LOAD1)
      4. 5.1.4 Recommended Wire Gauge
      5. 5.1.5 Other
    2. 5.2 Equipment Setup
      1. 5.2.1 Initial EVM Jumper and Switch Settings
      2. 5.2.2 Procedure
      3. 5.2.3 Start-Up and Shutdown Procedure
      4. 5.2.4 Equipment Shutdown
    3. 5.3 Other Tests
      1. 5.3.1 Adjusting Output Voltage (R1 and R3)
      2. 5.3.2 Remote Sense Test Setup
      3. 5.3.3 Voltage Tracking Test Setup
        1. 5.3.3.1 Single Unit Tracking (Charge)
        2. 5.3.3.2 Single Unit Tracking (Discharge)
      4. 5.3.4 Enable and Disable Test Setup
        1. 5.3.4.1 Power-On Enable
      5. 5.3.5 Margin Test Setup
        1. 5.3.5.1 Margin Up 5%
      6. 5.3.6 Power Good and Synchronization Test Setup
        1. 5.3.6.1 Synchronization
  7. 6TPS40100EVM Typical Performance Data and Characteristics Curves
    1. 6.1 Efficiency
    2. 6.2 Line and Load Regulation
    3. 6.3 Loop Stability
  8. 7EVM Assembly Drawings and Layout
  9. 8List of Materials
  10. 9Revision History

5.2.2 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, VIN, it is advisable to limit the source current to 5.0 A maximum. Make sure VIN is initially set to 0 V and connected as shown in Figure 5-2.
  3. Connect an ammeter between the positive output of the input supply and the positive input of the EVM (J2, Pin 1).
  4. Connect voltmeter #1 to TP3 and TP4. These are the EVM input supply monitoring points.
  5. Connect LOAD1 to J5. Set LOAD1 to constant current mode to sink 0 ADC before input voltage is applied.
  6. Connect voltmeter #2 across TP13 and TP14. This is the EVM output supply monitoring point. This configuration is local sensing.
  7. Remove the oscilloscope probe jacket and position the probe as shown in Figure 5-1. TP17 and TP18 are implemented to provide the user with the means to achieve good noise immune measurements of ripple voltage and transient response.
    GUID-20220228-SS0I-0JQT-VKWF-DTRN8ZF741SX-low.gif Figure 5-1 Probe Position for Ripple Measurement
  8. Place a fan as shown in Figure 5-2 and turn it on, making sure air is flowing across the EVM.
GUID-20220228-SS0I-JJ1F-C79Q-BNXL4KDS35CQ-low.gif Figure 5-2 TPS40100EVM-001 Recommended Test Setup