SLVU433A February   2011  – January 2022 TPS53125 , TPS53126 , TPS53127 , TPS53128 , TPS53129

 

  1.   Trademarks
  2. 1 Introduction
    1. 1.1 Description
    2. 1.2 Application
    3. 1.3 Features
  3. 2 Electrical Performance Specifications
  4. 3 Schematics
  5. 4 Connector and Test Point Descriptions
    1. 4.1 Enable Switches (SW1 and SW2)
    2. 4.2 Switching Frequency Select Switch (SW3)
    3. 4.3 Test Point Descriptions
      1. 4.3.1 Input Voltage Monitoring (TP3 and TP9)
      2. 4.3.2 Channel 1 Output Voltage Monitoring (TP4 and TP8)
      3. 4.3.3 Channel 2 Output Voltage Monitoring (TP6 and TP7)
      4. 4.3.4 Soft-Start Voltage Monitoring (TP1, TP2, and TP3)
      5. 4.3.5 Switching Node Monitoring (TP3, TP5, and TP11)
      6. 4.3.6 5-V Regulator Output Monitoring (TP3 and TP10)
  6. 5 Test Setup
    1. 5.1 Equipment
      1. 5.1.1 Voltage Source
      2. 5.1.2 Meters
      3. 5.1.3 Loads
      4. 5.1.4 Oscilloscope and Probe
      5. 5.1.5 Recommended Wire Gauge
      6. 5.1.6 Other Test Equipment
    2. 5.2 Recommended Setup
  7. 6 Test Procedure
    1. 6.1 Start-Up Procedure
    2. 6.2 Line/Load Regulation and Efficiency Measurement Procedure
    3. 6.3 Output Ripple Voltage Measurement Procedure
    4. 6.4 Shutdown Procedure
  8. 7 Performance Data and Typical Characteristic Curves
    1. 7.1 Efficiency
    2. 7.2 Line and Load Regulation
    3. 7.3 Output Voltage Ripple
    4. 7.4 Switch Node Waveforms
  9. 8 EVM Assembly Drawings and Layout
  10. 9 Bill of Materials
  11. 10Revision History

2 Electrical Performance Specifications

Table 2-1 TPS53128EVM-620 Electrical and Performance Specifications
ParameterNotes and ConditionsMINTYPMAXUNIT
INPUT CHARACTERISTICS
VINInput voltage81222V
IINInput currentVIN = 12 V, IOUT1 = 4 A, IOUT2 = 4 A—1.21.5A
No load input currentVIN = 12 V, IOUT = 0 A—20—mA
VIN_UVLOInput UVLOIOUT = 4 A4.04.24.5V
OUTPUT CHARACTERISTICS
VOUT1Output voltage 1VIN = 12 V, IOUT1 = 2 A—1.05—V
Line regulationVIN = 8 V to 22 V——1%
Load regulationIOUT1 = 0 A to 4 A——1%
VOUT1_ripOutput voltage rippleVIN = 12 V, IOUT2 = 4 A—-30mVpp
IOUT1Output current 1VIN = 8 V to 22 V04A
VOUT2Output voltage 2VIN = 12 V, IOUT2 = 2 A—1.80—V
Line regulationVIN = 8 V to 22 V——1%
Load regulationIOUT2 = 0 A to 4 A——1%
VOUT2_ripOutput voltage rippleVIN = 12 V, IOUT2 = 4 A——30mVpp
IOUT2Output current 2VIN = 8 V to 22 V04A
SYSTEMS CHARACTERISTICS
FSWSwitching frequency200350400kHz
ηpk1Peak efficiency of output 1VIN = 12 V—87%—
η1Full load efficiency of output 1VIN = 12 V, IOUT1 = 4 A—85%—
ηpk2Peak efficiency of output 2VIN = 12 V—91%—
η2Full load efficiency of output 2VIN = 12 V, IOUT2 = 4 A—90%—