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

5.3.3 Voltage Tracking Test Setup

The following procedure is for a single EVM demonstration of the track function. Please see Figure 5-4.

  1. Shunt pins 2 and 3 of J8 (tracking enable jumper).
  2. The tracking engage switch (S2) should be in the closed position.
  3. Connect an oscilloscope probe to the TRACKING IN pin (J3 pin 1) and VOUT (TP 17 and 18).
  4. Connect the load to the output of the EVM and set from 1 A–10 A (User selectable).
  5. Power on the EVM with an input voltage of 10.8 V–13.2 V (Allow for SS voltage to reach 3.5 V to ensure proper tracking performance or wait one to two seconds).
  6. Open the Tracking Engage Switch (S2) (Shorting pins 1 and 2 open) and observe how VOUT tracks the TRACKING IN pins rising voltage. Waveforms should be simultaneous.
  7. Close the Tracking Engage (S2) (Shorting pins 2 and 3 open) and observe how VOUT tracks the TRACKING IN pins falling voltage. Waveforms should be simultaneous.
GUID-20220228-SS0I-GGXF-BJ39-BH5GMX9KHBNJ-low.gif Figure 5-4 TPS40100EVM-001 Single EVM Tracking Test Setup