SNVU588A
December 2017 – January 2022
TPS40345
Trademarks
1
Description
1.1
Applications
1.2
Features
2
TPS40345EVM-353 Electrical Performance Specifications
3
TPS40345EVM-353 Schematic
4
Connector and Test Point Descriptions
4.1
Enable Jumper (JP2)
4.2
Frequency Spread Spectrum – FSS Jumper (JP1)
4.3
Test Point Descriptions
4.3.1
Input Voltage Monitoring (TP1 and TP2)
4.3.2
Output Voltage Monitoring (TP3 and TP4)
4.3.3
Loop Response Testing (TP5, TP6, TP7, TP8, and R3)
4.3.4
Error Amplifier Voltage Monitoring (TP9, TP10, and TP11)
4.3.5
Switching Waveform Monitoring (TP12, TP13, TP14, and TP15)
4.3.6
Power-Good Voltage Monitoring (TP16 and TP18)
4.3.7
Enable and Soft-Start Voltage Monitoring (TP17 and TP18)
5
Test Setup
5.1
Equipment
5.1.1
Voltage Source
5.1.2
Meters
5.1.3
Load
5.1.4
Oscilloscope
5.1.5
Recommended Wire Gauge
5.1.6
Other
5.2
Equipment Setup
5.2.1
Procedure
5.2.2
Diagram
5.3
Start-Up/Shutdown Procedure
5.4
Output Ripple Voltage Measurement Procedure
5.5
Control Loop Gain and Phase Measurement Procedure
5.6
Equipment Shutdown
6
TPS40345EVM-353 Test Data
6.1
Efficiency
6.2
Line and Load Regulation
6.3
Output Voltage Ripple
6.4
Switch Node
6.5
Control Loop Bode Diagram
6.6
Additional Waveforms
6.6.1
Output Ripple With Frequency Spread Spectrum (FSS) Enabled
7
TPS40345EVM-353 Assembly Drawings and Layout
8
TPS40345EVM-353 Bill of Materials
9
Revision History
3
TPS40345EVM-353 Schematic
For reference only, See
Table 8-1
for specific values
Figure 3-1
TPS40345EVM-353 Schematic