SLVUAX8B November   2016  – August 2021 TPS54824

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Specification Summary
    3. 1.3 Evaluating the TPS54824EVM-779 at –40°C
    4. 1.4 Modifications
      1. 1.4.1 Output Voltage Setpoint
      2. 1.4.2 Adjustable UVLO
      3. 1.4.3 Example Component Values For Common Output Voltages
  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 Powering Down
    11. 2.11 Start-Up Into Pre-Bias
    12. 2.12 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 TPS54824EVM-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 TPS54824EVM-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 TPS54824EVM-779 Performance Specification Summary
SPECIFICATIONTEST CONDITIONSMINTYPMAXUNIT
VIN voltage range4.51217V
VIN start voltage4.4V
VIN stop voltage4V
Output voltage setpoint1.8V
Output current rangeVIN = 4.5 V to 17 V08A
Load regulationVIN = 4.5 V to 17 V, IO = 8 A–0.1%
Load transient responseIO = 2 A to 6 AVoltage change–50mV
Recovery time75µs
IO = 6 A to 2 AVoltage change55mV
Recovery time75µs
Loop bandwidthVIN = 12 V, IO = 4 A116kHz
Phase marginVIN = 12 V , IO = 4 A58degree
Input ripple voltageIO = 8 A270mVPP
Output ripple voltageIO = 8 A11mVPP
Output rise time1.1ms
Operating frequency (fSW)700kHz
Maximum efficiencyTPS54824EVM-779, VIN = 5 V, IO = 2 A94.3%