SLVUBM5A April   2019  – August 2021 TPS54A24

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Background
    2. 1.2 Performance Characteristics Summary
    3. 1.3 Modifications
      1. 1.3.1 Output Voltage Setpoint
      2. 1.3.2 Adjustable UVLO
      3. 1.3.3 Component Values to Evaluate 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  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
    11. 2.11 Thermal Performance
  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 Characteristics Summary

A summary of the TPS54A24EVM-058 performance characteristics is provided in Table 1-2. Characteristics are given for an input voltage of VIN = 12 V and an output voltage of 1.8 V, unless otherwise specified. The TPS54A24EVM-058 is designed and tested for VIN = 4.5 V to 17 V. The ambient temperature is room temperature (20 to 25°C) for all measurements, unless otherwise noted.

Table 1-2 TPS54A24EVM-058 Performance Characteristics Summary
SPECIFICATIONTEST CONDITIONSMINTYPMAXUNIT
VIN voltage range4.51217V
Input currentVIN = 12 V, IO = 0 A18.5mA
VIN = 4.5 V, IO = 10 A4.57A
VIN start voltage4.5V
VIN stop voltage4V
Output voltage setpoint1.8V
Output current rangeVIN = 4.5 V to 17 V010A
Load regulationVIN = 4.5 V to 17 V, IO = 10 A–0.1%
Load transient responseIO = 2.5 A to 7.5 AVoltage change–70mV
Recovery time80µs
IO = 7.5 A to 2.5 AVoltage change70mV
Recovery time80µs
Loop bandwidthVIN = 12 V, RO = 0.3 Ω76kHz
Phase margin56degrees
Input ripple voltageIO = 10 A240mVPP
Output ripple voltage7mVPP
Output rise time1.3ms
Operating frequency (fSW)500kHz
Peak efficiencyTPS54A24EVM-058, VIN = 5 V, IO = 2 A94.7%
TPS54A24EVM-058, VIN = 12 V, IO = 3.5 A91.6%
IC case temperatureTPS54A24EVM-058, VIN = 12 V, IO = 10 A, 15-minute soak62.7°C