SLUUC72A September   2020  – October 2021 TPS542A50

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Before You Begin
  3. 2Description
    1. 2.1 Typical End-User Applications
    2. 2.2 EVM Features
    3. 2.3 TPS542A50EVM-059 PCB
  4. 3TPS542A50EVM-059 Bottom Circuit
    1. 3.1 Modifications
      1. 3.1.1 Output Voltage Setpoint
      2. 3.1.2 Enable and Undervoltage Lockout
      3. 3.1.3 Programming and External Clock Synchronization
      4. 3.1.4 Load Step with Function Generator
    2. 3.2 TPS542A50EVM-059 Bottom Circuit Schematic
    3. 3.3 Test Setup and Results
      1. 3.3.1  Input/Output Connections
      2. 3.3.2  Start Up Procedure
      3. 3.3.3  Electrical Performance Specifications and Results
      4. 3.3.4  Efficiency
      5. 3.3.5  Power Loss
      6. 3.3.6  Load Regulation
      7. 3.3.7  Transient Response
      8. 3.3.8  Loop Response
      9. 3.3.9  Output Voltage Ripple
      10. 3.3.10 Thermal Data
  5. 4TPS542A50EVM-059 Top Circuit (Small layout area design)
    1. 4.1 Modifications
      1. 4.1.1 Output Voltage Setpoint
      2. 4.1.2 Enable and Undervoltage Lockout
      3. 4.1.3 Programming and External Clock Synchronization
      4. 4.1.4 Load Step with Function Generator
    2. 4.2 TPS542A50EVM-059 Top Circuit (Small Layout Area) Schematic
    3. 4.3 Test Setup and Results
      1. 4.3.1  Input/Output Connections
      2. 4.3.2  Start Up Procedure
      3. 4.3.3  Electrical Performance Specifications and Results
      4. 4.3.4  Efficiency
      5. 4.3.5  Power Loss
      6. 4.3.6  Load Regulation
      7. 4.3.7  Line Regulation
      8. 4.3.8  Transient Response
      9. 4.3.9  Loop Response
      10. 4.3.10 Output Voltage Ripple
      11. 4.3.11 Start Up
  6. 5TPS542A50EVM-059 PCB Layout
  7. 6List of Materials
  8. 7Revision History

3.3.2 Start Up Procedure

  1. Make sure the EN jumper (J4) is open to float the EN pin, enabling the TPS542A50. Alternatively, the device can be enabled as described in Section 3.1.2.
  2. If using an external load, connect the load to VOUT and PGND of J2 using copper wire capable of handling at least 15 A (18-AWG or greater). If using the built-in load with a function generator, connect the positive and negative connections of the function generator to FGEN+ (TP19) and FGEN- (TP20), respectively.
  3. Apply appropriate VIN voltage to the VIN and PGND terminals of J1.
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