SLVU263A August   2008  – October 2021 TPS54231

 

  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 / 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
    10. 2.10 Eco-mode Operation
    11. 2.11 Thermal Characteristics
  4. 3Board Layout
    1. 3.1 Layout
    2. 3.2 Estimated Circuit Area
  5. 4Schematic and Bill of Materials
    1. 4.1 Schematic
    2. 4.2 Bill of Materials
  6. 5Revision History

1.2 Performance Specification Summary

A summary of the TPS54231EVM-372 performance specifications is provided in Table 1-2. Specifications are given for an input voltage of VIN = 15 V and an output voltage of 3.3 V, unless otherwise specified. The TPS54231EVM-372 is designed and tested for VIN = 7 V to 28 V. The ambient temperature is 25°C for all measurements, unless otherwise noted.

Table 1-2 TPS54231EVM-372 Performance Specification Summary
SPECIFICATIONTEST CONDITIONSMINTYPMAXUNIT
VIN voltage range71528V
Output voltage set point3.3V
Output current rangeVIN = 7 V to 28 V02A
Line regulationIO = 1 A, VIN = 7 V to 28 V±0.15%
Load regulationVIN = 15 V, IO = 0 A to 2 A±0.15%
Load transient responseIO = 0.5 A to 1.5 AVoltage change–100mV
Recovery time150μs
IO = 1.5 A to 0.5 AVoltage change100mV
Recovery time150μs
Loop bandwidthVIN = 15 V, IO = 1 A27kHz
Phase marginVIN = 15 V , IO = 1 A55°
Input ripple voltageIO = 2 A125mVpp
Output ripple voltageIO = 2 A5mVpp
Output rise time6ms
Operating frequency570kHz
Maximum efficiencyTPS54231EVM-372, VIN = 7 V, IO = 0.5 A92.7%