SLVU356A
January 2010 – October 2021
TPS54290
,
TPS54291
Trademarks
1
Introduction
1.1
Description
1.2
Applications
1.3
Features
2
TPS54291EVM-431 Electrical Performance Specifications
3
Schematic
3.1
Enable Jumpers (JP1 and JP2)
3.2
Error Amplifier Outputs
3.3
Test Point Descriptions
3.3.1
Input Voltage Monitoring (TP1 and TP2)
3.3.2
Channel 1 Output Voltage Monitoring (TP3 and TP4)
3.3.3
Channel 1 Loop Analysis (TP5, TP6, TP7, and TP8)
3.3.4
Channel 1 Switching Waveforms (TP9 and TP10)
3.3.5
TPS54291 IC Ground (TP11)
3.3.6
Channel 2 Switching Waveforms (TP12 and TP13)
3.3.7
Channel 2 Loop Analysis (TP14, TP15, TP16, and TP17)
3.3.8
Output Voltage Monitoring (TP18 and TP19)
4
Test Setup
4.1
Equipment
4.1.1
Voltage Source (VIN)
4.1.2
Meters
4.1.3
Loads
4.1.4
Oscilloscope
4.1.5
Recommended Wire Gauge
4.1.6
Other
4.2
Equipment Setup
4.2.1
Procedure
4.2.2
Diagram
4.3
Start-Up/Shutdown Procedure
4.4
Output Ripple Voltage Measurement Procedure
4.5
Control Loop Gain and Phase Measurement Procedure
4.6
Equipment Shutdown
5
TPS54291EVM-431 Typical Performance Data and Characteristic Curves
5.1
Efficiency
5.2
Line and Load Regulation
5.3
Switch Node and Output Ripple Voltage
6
EVM Assembly Drawings and Layout
7
List of Materials
8
Revision History
5.1
Efficiency
V
IN
= 9.6-13.2V, V
OUT1
= 3.3V I
OUT1
= 0-1.5A, V
OUT2
= 1.2V I
OUT2
= 0-2.5A
Figure 5-1
TPS54291EVM-431 Efficiency vs Load Current