SLVU432A 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 TPS53129EVM-621 Electrical and Performance Specifications
Parameter Notes and Conditions MIN TYP MAX UNIT
INPUT CHARACTERISTICS
VIN Input Voltage 8 12 22 V
IIN Input Current VIN = 12 V, IOUT1 = 4 A, IOUT2 = 4 A – 1.2 1.5 A
No-Load Input Current VIN = 12 V, IOUT = 0 A – 20 – mA
VIN_UVLO Input UVLO IOUT = 4 A 4.0 4.2 4.5 V
OUTPUT CHARACTERISTICS
VOUT1 Output Voltage 1 VIN = 12 V, IOUT1 = 2 A – 1.05 – V
Line Regulation VIN = 8 V to 22 V – – 1%
Load Regulation IOUT1 = 0 A to 4 A – – 1%
VOUT1_rip Output Voltage Ripple VIN = 12 V, IOUT2 = 4 A – – 30 mVpp
IOUT1 Output Current 1 VIN = 8 V to 22 V 0 4 A
VOUT2 Output Voltage 2 VIN = 12 V, IOUT2 = 2 A – 1.80 – V
Line Regulation VIN = 8 V to 22 V – – 1%
Load Regulation IOUT2 = 0 A to 4 A – – 1%
VOUT2_rip Output Voltage Ripple VIN = 12 V, IOUT2 = 4 A – – 30 mVpp
IOUT2 Output Current 2 VIN = 8 V to 22 V 0 4 A
SYSTEMS CHARACTERISTICS
FSW Switching Frequency 350 700 800 kHz
ηpk1 Peak Efficiency of Output 1 VIN = 12 V – 85% –
η1 Full-Load Efficiency of Output 1 VIN = 12 V, IOUT1 = 4 A – 84% –
ηpk2 Peak Efficiency of Output 2 VIN = 12 V – 89% –
η2 Full-Load Efficiency of Output 2 VIN = 12 V, IOUT2 = 4 A – 88% –