SLVU356A January   2010  – October 2021 TPS54290 , TPS54291

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Description
    2. 1.2 Applications
    3. 1.3 Features
  3. 2TPS54291EVM-431 Electrical Performance Specifications
  4. 3Schematic
    1. 3.1 Enable Jumpers (JP1 and JP2)
    2. 3.2 Error Amplifier Outputs
    3. 3.3 Test Point Descriptions
      1. 3.3.1 Input Voltage Monitoring (TP1 and TP2)
      2. 3.3.2 Channel 1 Output Voltage Monitoring (TP3 and TP4)
      3. 3.3.3 Channel 1 Loop Analysis (TP5, TP6, TP7, and TP8)
      4. 3.3.4 Channel 1 Switching Waveforms (TP9 and TP10)
      5. 3.3.5 TPS54291 IC Ground (TP11)
      6. 3.3.6 Channel 2 Switching Waveforms (TP12 and TP13)
      7. 3.3.7 Channel 2 Loop Analysis (TP14, TP15, TP16, and TP17)
      8. 3.3.8 Output Voltage Monitoring (TP18 and TP19)
  5. 4Test Setup
    1. 4.1 Equipment
      1. 4.1.1 Voltage Source (VIN)
      2. 4.1.2 Meters
      3. 4.1.3 Loads
      4. 4.1.4 Oscilloscope
      5. 4.1.5 Recommended Wire Gauge
      6. 4.1.6 Other
    2. 4.2 Equipment Setup
      1. 4.2.1 Procedure
      2. 4.2.2 Diagram
    3. 4.3 Start-Up/Shutdown Procedure
    4. 4.4 Output Ripple Voltage Measurement Procedure
    5. 4.5 Control Loop Gain and Phase Measurement Procedure
    6. 4.6 Equipment Shutdown
  6. 5TPS54291EVM-431 Typical Performance Data and Characteristic Curves
    1. 5.1 Efficiency
    2. 5.2 Line and Load Regulation
    3. 5.3 Switch Node and Output Ripple Voltage
  7. 6EVM Assembly Drawings and Layout
  8. 7List of Materials
  9. 8Revision History

2 TPS54291EVM-431 Electrical Performance Specifications

Table 2-1 TPS54291EVM-431 Electrical and Performance Specifications
PARAMETER NOTES AND CONDITIONS MIN NOM MAX UNITS
INPUT CHARACTERISTICS
VIN Input Voltage 9.6 12 13.2 V
IIN Input Current VIN = Nom, IOUT = Max – 2.4 2.6 A
No Load Input Current VIN = Nom, IOUT = 0 A – 12 20 mA
VIN_UVLO Input UVLO IOUT = Min to Max 4.0 4.2 4.4 V
OUTPUT CHARACTERISTICS
VOUT1 Output Voltage 1 VIN = Nom, IOUT = Nom 3.20 3.30 3.40 V
VOUT2 Output Voltage 2 VIN = Nom, IOUT = Nom 1.15 1.20 1.25 V
Line Regulation VIN = Min to Max – – 1%
Load Regulation IOUT = Min to Max – – 1%
VOUT_ripple Output Voltage Ripple VIN = Nom, IOUT = Max – – 50 mVpp
IOUT1 Output Current 1 VIN = Min to Max 0 2.5 A
IOUT2 Output Current 2 VIN = Min to Max 0 2.5 A
IOCP1 Output Over Current Channel 1 VIN = Nom, VOUT = VOUT1–5% 1.6 2.0 2.4 A
IOCP2 Output Over Current Channel 2 VIN = Nom, VOUT = VOUT2–5% 3.0 3.6 4.4 A
SYSTEMS CHARACTERISTICS
FSW Switching Frequency 520 600 720 kHz
ηpk Peak Efficiency VIN = Nom – 88% –
η Full Load Efficiency VIN = Nom, IOUT1 = IOUT1 = Max – 85% –
Top Operating Temperature Range VIN = Min to Max, IOUT = Min to Max 0 25 60 °C