Texas Instruments TPS40195, User Manual, Page: 7 / 23

5.2 Equipment Setup
Shown in Figure 5-1 is the basic test setup recommended to evaluate the TPS40195EVM. Please note that
although the return for J1 and J4 are the same, the connections should remain separate as shown in Figure 5-1 .
1. Working at an ESD workstation, make sure that any wrist straps, bootstraps, or mats are connected
referencing the user to earth ground before power is applied to the EVM. Electrostatic smock and safety
glasses should also be worn.
2. Prior to connecting the DC input source, V
IN
, it is advisable to limit the source current from V
IN
to 20-A
maximum. Make sure V
IN
is initially set to 0 V and connected as shown in Figure 5-1 .
3. Connect the ammeter A1 (0-A to 20-A range) between V
IN
and J1 as shown in Figure 5-1 .
4. Connect voltmeter V1 to TP1 and TP2 as shown in Figure 5-1 .
5. Connect LOAD1 to J3 and J4 as shown in Figure 5-1 . Set LOAD1 to constant current mode to sink 0 A
DC
before V
IN
is applied.
6. Connect voltmeter, V2 across TP5 and TP6 as shown in Figure 5-1 .
7. Place Fan as shown in Figure 5-1 and turn on, making sure air is flowing across the EVM.
.
Oscilloscop
e
1M W , AC
20MHz
See figure 3 for tip
and barrel
measurement
3.3V
0 to 20A
LOAD1
+ -
V2
+
-
V1
+
-
0 to 20V
V
IN
- +
A1
FAN
Figure 5-1. TPS40195EVM Recommended Test Setup
www.ti.com Test Setup
SLUU297B – DECEMBER 2007 – REVISED JANUARY 2022
Submit Document Feedback
TPS40195 Buck Controller Evaluation Module User's Guide 7
Copyright © 2022 Texas Instruments Incorporated