SNVU588A December   2017  – January 2022 TPS40345

 

  1.   Trademarks
  2. 1Description
    1. 1.1 Applications
    2. 1.2 Features
  3. 2TPS40345EVM-353 Electrical Performance Specifications
  4. 3TPS40345EVM-353 Schematic
  5. 4Connector and Test Point Descriptions
    1. 4.1 Enable Jumper (JP2)
    2. 4.2 Frequency Spread Spectrum – FSS Jumper (JP1)
    3. 4.3 Test Point Descriptions
      1. 4.3.1 Input Voltage Monitoring (TP1 and TP2)
      2. 4.3.2 Output Voltage Monitoring (TP3 and TP4)
      3. 4.3.3 Loop Response Testing (TP5, TP6, TP7, TP8, and R3)
      4. 4.3.4 Error Amplifier Voltage Monitoring (TP9, TP10, and TP11)
      5. 4.3.5 Switching Waveform Monitoring (TP12, TP13, TP14, and TP15)
      6. 4.3.6 Power-Good Voltage Monitoring (TP16 and TP18)
      7. 4.3.7 Enable and Soft-Start Voltage Monitoring (TP17 and TP18)
  6. 5Test Setup
    1. 5.1 Equipment
      1. 5.1.1 Voltage Source
      2. 5.1.2 Meters
      3. 5.1.3 Load
      4. 5.1.4 Oscilloscope
      5. 5.1.5 Recommended Wire Gauge
      6. 5.1.6 Other
    2. 5.2 Equipment Setup
      1. 5.2.1 Procedure
      2. 5.2.2 Diagram
    3. 5.3 Start-Up/Shutdown Procedure
    4. 5.4 Output Ripple Voltage Measurement Procedure
    5. 5.5 Control Loop Gain and Phase Measurement Procedure
    6. 5.6 Equipment Shutdown
  7. 6TPS40345EVM-353 Test Data
    1. 6.1 Efficiency
    2. 6.2 Line and Load Regulation
    3. 6.3 Output Voltage Ripple
    4. 6.4 Switch Node
    5. 6.5 Control Loop Bode Diagram
    6. 6.6 Additional Waveforms
      1. 6.6.1 Output Ripple With Frequency Spread Spectrum (FSS) Enabled
  8. 7TPS40345EVM-353 Assembly Drawings and Layout
  9. 8TPS40345EVM-353 Bill of Materials
  10. 9Revision History

2 TPS40345EVM-353 Electrical Performance Specifications

Table 2-1 TPS40345EVM-353 Electrical and Performance Specifications
PARAMETER NOTES AND CONDITIONS MIN TYP MAX UNIT
INPUTS CHARACTERISTICS
VIN Input voltage 8 12 14 V
IIN Input current VIN = Nom, IOUT = Max 2.3 2.5 A
No load input current VIN = Nom, IOUT = 0A 40 50 mA
VIN_UVLO Input UVLO IOUT = 10 A 3.0 V
OUTPUTS CHARACTERISTICS
VOUT1 Output voltage 1 VIN = 12 V, IOUT = 20 A 1.17 1.2 1.23 V
Line regulation VIN = 8 V to 14 V 0.5%
Load regulation IOUT = 0 A to 20 A 0.5%
VOUT_ripple Output voltage ripple VIN = 12 V, IOUT = 20 A 24 mVpp
IOUT1 Output current 1 VIN = 8 V to 14 V 0 20 A
SYSTEMS CHARACTERISTICS
fSW Switching frequency 540 600 660 kHz
ηpk Peak efficiency VIN = 12 V 88%
η Full load efficiency VIN = 12 V, IOUT = 20 A 86%