TPS54291EVM-431 provides two test points for measuring the voltage generated by the module. This allows the user to measure the actual module output voltage without losses from output cables and connectors. All output voltage measurements should be made between TP3 and TP4. To use TP3 and TP4, connect a voltmeter positive terminal to TP3 and negative terminal to TP4. For output ripple measurements, TP3 and TP4 allow a user to limit the ground loop area by using the tip and barrel measurement technique shown in Section 4.2.2. All output ripple measurements should be made using the tip and barrel measurement. Even this Tip and Barrel measurement technique increases the measured switch edge noise. For improved output ripple measurement, measure the output ripple at the output capacitor (C5).