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

5.3.3.2 Single Unit Tracking (Discharge)

  • Channel 1 (+ 3.3 VOUT)
  • Channel 4 (Tracking In)
  • VIN = 12 V
  • IOUT = 10 A
GUID-20220228-SS0I-NG06-LFHV-HMGTSMS8CS4F-low.png Figure 5-6 Single EVM Tracking Discharging Ramp

To demonstrate multiple EVM (2 modules) tracking, the following procedure must be followed to ensure proper functionality. The second TPS40100 EVM should be configured to a different output voltage.

  1. Shunt pins 2 and 3 of the Tracking Enable Jumper (J8) for both modules.
  2. Connect J3 pin 1 of each EVM.
  3. Connect TP16 of each EVM. This is the module to module test point. This allows either module to be the control EVM through S2.
  4. The Tracking Engage Switch (S2) should be in the closed (shorting pins 2 and 3) position on the control EVMs.
  5. Connect an oscilloscope probe to the TP17 and 18 of both modules and pin 1 of J3 of one of the modules. Modules should have a common input voltage and return.
  6. Remote sense jumpers (J6 and 7) should have pins 2 and 3 shunted, activating local output sensing.
  7. Apply an input voltage of 10.8 V to 13.2 V.
  8. Allow the SS voltage to reach 3.5 V.
  9. Open the control EVM Tracking Engage Switch (S2) (Opening pins 2 and 3) and observe the monitored points (Both EVM outputs and the tracking in voltage. Output voltage should follow the tracking in voltage until reaching the regulation point).
  10. Close the Tracking Engage Switch (S2) (Shorting pins 2 and 3) of the control EVM and observe the monitored points (Both EVM outputs and the tracking in voltage). Falling waveforms should be coincidal.
GUID-20220228-SS0I-KQ8F-V64V-GSRJFBFJL3DP-low.gif Figure 5-7 TPS40100EVM-001 Dual EVM Tracking Test Setup