SLVU579A December   2011  – September 2021 TPS54427

 

  1.   Trademarks
  2. 1Introduction
  3. 2Performance Specification Summary
  4. 3Modifications
    1. 3.1 Output Voltage Setpoint
    2. 3.2 Output Filter and Closed-Loop Response
  5. 4Test Setup and Results
    1. 4.1 Input/Output Connections
    2. 4.2 Start-Up Procedure
    3. 4.3 Efficiency
    4. 4.4 Load Regulation
    5. 4.5 Line Regulation
    6. 4.6 Load Transient Response
    7. 4.7 Output Voltage Ripple
    8. 4.8 Input Voltage Ripple
    9. 4.9 Start-Up and Shut-Down
  6. 5Board Layout
    1. 5.1 Layout
  7. 6Schematic, Bill of Materials, and Reference
    1. 6.1 Schematic
    2. 6.2 Bill of Materials
    3. 6.3 Reference
  8. 7Revision History

2 Performance Specification Summary

A summary of the TPS54427 performance specifications is provided in Table 2-1. Specifications are given for an input voltage of VIN = 12 V and an output voltage of 1.05 V, unless otherwise noted. The ambient temperature is 25°C for all measurements, unless otherwise noted.

Table 2-1 TPS54427 Performance Specifications Summary
SPECIFICATIONS TEST CONDITIONS MIN TYP MAX UNIT
Input voltage range, VIN 4.5 12 18 V
Output voltage, VOUT 1.05 V
Operating frequency VIN = 12 V, IO = 4 A 650 kHz
Output current range 0 4 A
Line regulation IO = 2.5 A ±0.33 %
Load regulation VIN = 12 V ±0.15 %
Overcurrent limit VIN = 12 V, LO = 1.5 µH 4.6 5.3 6.8 A
Output ripple voltage VIN = 12 V, IO = 4 A 15 mVPP
Maximum efficiency VIN = 5 V, IO= 0.7 A 88 %