SLVUB56A July   2017  – September 2021 TPS54424

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Specification Summary
    3. 1.3 Modifications
      1. 1.3.1 Output Voltage Setpoint
      2. 1.3.2 Adjustable UVLO
  3. 2Test Setup and Results
    1. 2.1  Input/Output Connections
    2. 2.2  Efficiency
    3. 2.3  Output Voltage Regulation
    4. 2.4  Load Transient and Loop Response
    5. 2.5  Output Voltage Ripple
    6. 2.6  Input Voltage Ripple
    7. 2.7  Powering Up
    8. 2.8  Powering Down
    9. 2.9  Start-Up Into Pre-Bias
    10. 2.10 Hiccup Mode Current Limit
  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

A summary of the TPS54424EVM-779 performance specifications is provided in Table 1-2. Specifications are given for an input voltage of VIN = 12 V and an output voltage of 1.8 V, unless otherwise specified. The TPS54424EVM-779 is designed and tested for VIN = 4.5 V to 17 V. The ambient temperature is 25°C for all measurements, unless otherwise noted.

Table 1-2 TPS54424EVM-779 Performance Specification Summary
SpecificationTest ConditionsMINTYPMAXUnit
VIN voltage range4.51217V
VIN start voltage4.5V
VIN stop voltage4V
Output voltage setpoint1.8V
Output current rangeVIN = 4.5 V to 17 V04A
Load regulationVIN = 4.5 V to 17 V, IO = 4 A–0.05%
Load transient responseIO = 1 A to 3 A–70mV
IO = 3 A to 1 A70mV
Loop bandwidthVIN = 12 V, IO = 4 A80kHz
Phase marginVIN = 12 V , IO = 4 A50degree
Input ripple voltageIO = 4 A200mVPP
Output ripple voltageIO = 4 A10mVPP
Output rise time1.1ms
Operating frequency700kHz
Peak efficiencyTPS54424EVM-779, VIN = 5 V, IO = 1.6 A to 1.8 A94.0%
TPS54424EVM-779, VIN = 12 V, IO = 3 A89.4%