SLVU767A August   2012  – October 2021 TPS542951

 

  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
      1. 4.3.1 Efficiency of Converter 1
      2. 4.3.2 Efficiency of Converter 2
    4. 4.4 Load Regulation
      1. 4.4.1 Load Regulation of Converter 1
      2. 4.4.2 Load Regulation of Converter 2
    5. 4.5 Line Regulation
      1. 4.5.1 Line Regulation Converter 1
      2. 4.5.2 Line Regulation Converter 2
    6. 4.6 Load Transient Response
      1. 4.6.1 Load Transient Response Converter 1
      2. 4.6.2 Load Transient Response Converter 2
    7. 4.7 Output Voltage Ripple
      1. 4.7.1 Output Voltage Ripple Converter 1
      2. 4.7.2 Output Voltage Ripple Converter 2
    8. 4.8 Input Voltage Ripple
    9. 4.9 Start-Up
      1. 4.9.1 Converter 1 Start-Up
      2. 4.9.2 Converter 2 Start-Up
  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 TPS542951EVM performance specifications is provided in Table 2-1. Specifications are given for an input voltage of VINx = 12 V and an output voltage of 3.3 V and 1.5 V, unless otherwise noted. The ambient temperature is 25°C for all measurement, unless otherwise noted.

Table 2-1 TPS542951EVM Performance Specifications Summary
SpecificationsTest ConditionsMinTypMaxUnit
Input voltage range (VINx)(1)1218V
Output voltagesVOUT13.3V
VOUT21.5
Operating frequencyVIN1, VIN2 = 12 V, IOUT1 = 1 A, IOUT2 = 1.5 A700kHz
Output current rangeCH104A
CH202
Line regulation, VOUT1IOUT1 = 1 A, IOUT2 = 0 A, VIN1, VIN2= 6 V to 18 V+0.25 , -0.55%
Line regulation, VOUT2IOUT2 = 1.5 A, IOUT1 = 0 A, VIN1, VIN2= 5 V to 18 V+0.15, -0.35%
Load regulation, VOUT1VIN1, VIN2 = 12 V, IOUT1 = 0 A to 2 A+0.4, -0.1%
Load regulation, VOUT2VIN1, VIN2 = 12 V, IOUT2 = 0 A to 3 A+0.5, -0.05%
Over current limit, VOUT1VIN1 = 12 V, L1 = 2.2 µH2.73.94.5A
Over current limit, VOUT2VIN2 = 12 V, L1 = 1.5 µH3.54.75.4A
Output ripple voltage, VOUT1VIN1 = 12 V, IOUT1 = 2 A20mVPP
Output ripple voltage, VOUT2VIN2 = 12 V, IOUT2 = 3 A20mVPP
Maximum efficiency, VOUT1VIN1 = 6 V, IOUT1= 0.6 A94.1%
Maximum efficiency, VOUT2VIN2 = 5 V, IOUT2= 0.5 A88.8%
(1) See Table 1-1