SLVU247A July   2008  – October 2021 TPS54331 , TPS54331-Q1

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Specification Summary
    3. 1.3 Modifications
      1. 1.3.1 Output Voltage Set Point
  3. 2Test Setup and Results
    1. 2.1 Input and Output Connections
    2. 2.2 Efficiency
    3. 2.3 Output Voltage Load Regulation
    4. 2.4 Output Voltage Line Regulation
    5. 2.5 Load Transients
    6. 2.6 Loop Characteristics
    7. 2.7 Output Voltage Ripple
    8. 2.8 Input Voltage Ripple
    9. 2.9 Powering Up
  4. 3Board Layout
    1. 3.1 Layout
  5. 4Schematic and Bill of Materials
    1. 4.1 Schematic
    2. 4.2 Bill of Materials
  6. 5Revision History

1.2 Performance Specification Summary

Table 1-2 provides a summary of the TPS54331EVM-232 performance specifications. Specifications are given for an input voltage of VIN = 15 V and an output voltage of 3.3 V, unless otherwise specified. The TPS54331EVM-232 is designed and tested for VIN = 10 V to 35 V. The ambient temperature is 25°C for all measurements, unless otherwise noted.

Table 1-2 TPS54331EVM-232 and Performance Specification Summary
SpecificationTest ConditionsMINTYPMAXUnit
VIN voltage range71528V
Output voltage set point3.3V
Output current rangeVIN = 7 V to 28 V03A
Line regulationIO = 1.5 A, VIN = 7 V–28 V±0.2%
Load regulationVIN = 14 V, IO = 0 A to 3 A±0.15%
Load transient responseIO = 0.75 A to 2.25 AVoltage change–100mV
Recovery time160μs
IO = 2.25 A to 0.75 AVoltage change100mV
Recovery time160μs
Loop bandwidthVIN = 25 V, IO = 1 A25.0kHz
Phase marginVIN = 25 V , IO = 1 A58°
Input ripple voltageIO = 3 A200mVpp
Output ripple voltageIO = 3 A10mVpp
Output rise time3.5ms
Operating frequency570kHz
Maximum efficiencyVIN = 10 V, VO = 5 V, IO = 0.75 A91.6%