Texas Instruments TPS53126EVM-600, User Manual

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TP4 TP8
Metal Ground Barrel
Probe Tip
Figure 4-1. Tip and Barrel Measurement for Output Voltage Ripple
4.3.3 Channel-2 Output Voltage Monitoring – TP6 and TP7
TPS53126EVM-600 provides two test points for measuring the voltage generated at the V
OUT2
output by the
module. This allows the user to measure the actual output voltage without losses from output cables and
connectors. Measure all dc output voltage between TP7 and TP6. To use TP7 and TP6, connect a voltmeter
positive terminal to TP7 and negative terminal to TP6.
For output ripple measurements, TP7 and TP6 allow a user to limit the ground loop area by using the tip and
barrel measurement technique shown in
Figure 4-1 .
4.3.4 Switching Node Monitoring – TP3, TP5, and TP11
TPS53126EVM-600 provides two test points for measuring the switching node waveform voltages. TP5 monitors
the switching node of Channel 1. TP2 monitors the switching node of Channel 2. To use TP5 or TP11, connect
an oscilloscope probe between TP5 or TP11 and TP3.
4.3.5 5-V Regulator Output Monitoring – TP3 and TP10
TPS53126EVM-600 provides a test point for measuring the output of the internal 5-V regulator. TP10 monitors
the output voltage of the internal 5-V regulator. To use TP10, connect a voltmeter positive terminal to TP10 and
negative terminal to TP3.
www.ti.com Connector and Test Point Descriptions
SLVU435A – FEBRUARY 2011 – REVISED JANUARY 2022
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