Datasheet

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Test Set Up

4.6 Test Points

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 TRK1 Soft Start

TP4 SW1 Channel 1 switch node

TP5 COMP Error amplifier output

TP6 PGOOD Power Good

TP7 CHA Loop injection point CHA

TP8 CHB Loop injection point CHB

TP9 VOUT Output positive sense point

TP10 PGND Output negative sense point

TP11 SW2 Channel 2 switch node

TP12 AGND Analog Ground

TP13 AGND Analog Ground

4.7 Equipment Shutdown

1. Shut down LOAD

2. Shut down V

3. Shut down FAN

SLVU219A–August 2007–Revised November 2010 Using the TPS40140EVM-003 A 32-A Single Output Two-Phase Stackable

Synchronous Buck Converter

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