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5.6 Test Points
5.7 Equipment Shutdown
6 TPS40180EVM Typical Performance Data and Characteristic Curves
TPS40180EVM Typical Performance Data and Characteristic Curves
Several test points are located around the board. These can be used to sense what is occurring at
different points of the converter. Table 5 lists these test points and what they are used for.
Table 5. List of Test Points
Name Test Point Label Description
TP1 VOUT Output voltage positive sense point
TP2 VIN Input voltage positive sense point
TP3 PGND Output voltage negative sense point
TP4 PGND Input voltage negative sense point
TP5 SS Soft Start
TP6 COMP Error Amplifier Output
TP7 PGOOD Power Good
TP8 BP5 Internal Linear Regulator Output
TP9 CHA Loop Injection Point
TP10 CHB Loop Injection Point
TP11 SW Switch Node
TP12 UVLO IC Enable Voltage
TP13 AGND Signal Ground
A. Shut down LOAD
B. Shut down V
IN
C. Shut down FAN
Figure 6 through Figure 9 present typical performance curves for the TPS40180EVM. Since actual
performance data can be affected by measurement techniques and environmental variables, these curves
are presented for reference and may differ from actual field measurements.
10 Using the TPS40180EVM, A 20A Stackable Single Phase Synchronous Buck Converter SLVU213 – May 2007
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