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5.6 Test Points
5.7 Equipment Shutdown
6 TPS40131EVM Typical Performance Data and Characteristic Curves
TPS40131EVM 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 2 lists these test points and what they are used for.
Table 2. List of Test Points
NAME TEST POINT LABEL DESCRIPTION
TP1 VIN Input voltage positive sense point
TP2 PGND Input voltage negative sense point
TP3 SW1 Channel 1 switch node
TP4 COMP Error amplifier output
TP5 CHB Loop injection point CHB
TP6 CHA Loop injection point CHA
TP7 VOUT Output positive sense point
TP8 PGND Output negative sense point
TP9 PGOOD Power good
TP10 SW2 Channel 2 switch node
TP11 AGND Analog ground
TP12 AGND Analog ground
TP13 SS Soft start
A. Shut down LOAD
B. Shut down V
IN1
C. Shut down V
IN2
D. Shut down FAN
Figure 7 through Figure 9 present typical performance curves for the TPS40131EVM. 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.
Using the TPS40131EVM, A 40A Single Output10 SLVU198A – February 2007 – Revised May 2007
Two-Phase Synchronous Buck Converter
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