TP16
TP15
Metal Ground Barrel
Probe Tip
Tip and Barrel Vout ripple
measurement
Figure 4-2. Output Ripple Measurement – Tip and Barrel using TP15 and TP16
4.3 Start-Up/Shutdown Procedure
1. Increase V
12V_IN
(V1) from 0 V to 10 V
DC
.
2. Vary LOAD1 from 0 A–10 A
DC
.
3. Vary V
12V_IN
(V1) from 10 V
DC
to 14 V
DC
.
4. Decrease LOAD1 to 0 A.
5. Decrease V
12V_IN
to 0 V.
4.4 Equipment Shutdown
1. Shut down the oscilloscope.
2. Shut down LOAD1.
3. Shut down V
12V_IN
.
4. Shut down FAN.
Test Setup
8
TPS40074 Buck Controller Evaluation Module User's Guide
SLUU231A – JUNE 2006 – REVISED JANUARY 2022
Copyright © 2022 Texas Instruments Incorporated
