SLVU703A August   2012  – September 2021 TPS54395

 

  1.   Trademarks
  2. 1Introduction
  3. 2Performance Specification Summary
  4. 3Modifications
    1. 3.1 Output Voltage Setpoint
    2. 3.2 Output Filter and Closed-Loop Response
  5. 4Test Setup and Results
    1. 4.1 Input/Output Connections
    2. 4.2 Start-Up Procedure
    3. 4.3 Efficiency
      1. 4.3.1 Efficiency of Converter 1
      2. 4.3.2 Efficiency of Converter 2
    4. 4.4 Load Regulation
      1. 4.4.1 Load Regulation of Converter 1
      2. 4.4.2 Load Regulation of Converter 2
    5. 4.5 Line Regulation
      1. 4.5.1 Line Regulation Converter 1
      2. 4.5.2 Line Regulation Converter 2
    6. 4.6 Load Transient Response
      1. 4.6.1 Load Transient Response Converter 1
      2. 4.6.2 Load Transient Response Converter 2
    7. 4.7 Output Voltage Ripple
      1. 4.7.1 Output Voltage Ripple Converter 1
      2. 4.7.2 Output Voltage Ripple Converter 2
    8. 4.8 Input Voltage Ripple
    9. 4.9 Start-Up
      1. 4.9.1 Converter 1 Start-Up
      2. 4.9.2 Converter 2 Start-Up
  6. 5Board Layout
    1. 5.1 Layout
  7. 6Schematic, Bill of Materials, and Reference
    1. 6.1 Schematic
    2. 6.2 Bill of Materials
    3. 6.3 Reference
  8. 7Revision History

4.1 Input/Output Connections

The TPS54395EVM is provided with input/output connectors and test points as shown in Table 4-1. A power supply capable of supplying 4 A must be connected to J1 through a pair of 20 AWG wires. The loads must be connected to J3 and/or J2 through a pair of 20 AWG wires. The maximum load current capability is two times 2 A. Wire lengths must be minimized to reduce losses in the wires. Test point TP1 provides a place to monitor the input voltage (VIN) with TP7 providing a convenient ground reference. TP4 and TP3 are used to monitor the output voltages with TP5 and TP6 as the ground references.

Table 4-1 Connection and Test Points
REFERENCE DESIGNATORFUNCTION
J1VIN (see Table 1-1 for VIN range)
J2VOUT2, 1.5 V at 3-A maximum
J3VOUT1, 3.3 V at 3-A maximum
J4EN1 control. Connect EN1 to off to disable converter 1; connect EN1 onto enable converter 1.
J5EN2 control. Connect EN2 to off to disable converter 2; connect EN2 onto enable converter 2.
JP1Jumper to give the possibility to use another input voltage for converter 2
TP1VIN test point at VIN connector
TP2VIN2 test point after JP1
TP3Output voltage test point for converter 2
TP4Output voltage test point for converter 1
TP5, TP6, TP7Ground test points at input and output connectors
TP8EN2 test point
TP9EN1 test point
TP10Switch node test point of converter 1
TP11Switch node test point of converter 2
TP12VREG5 test point
TP13PG1 test point
TP14PG2 test point
TP15Analog ground test point