Texas Instruments TPS40190EVM-001, User Manual

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4.2.1 Procedure
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, V12V_IN, it is advisable to limit the source current from V12V_IN to
5.0-A maximum. Make sure V12V_IN is initially set to 0 V and connected as shown in Figure 4-1 .
3. Connect the ammeter A1 (0-A to 5-A range) between V12V_IN and J1 as shown in Figure 4-1 .
4. Connect voltmeter V1 to TP6 and TP7 as shown in Figure 4-1 .
5. Connect LOAD1 to J2 as shown in Figure 4-1 . Set LOAD1 to constant current mode to sink 0 A
DC
before
V12V_IN is applied.
6. Connect voltmeter V2 across TP8 and TP11 as shown in Figure 4-1 .
7. Connect an oscilloscope probe to TP9 and TP10 as shown in Figure 4-1 Figure 3.
8. Place a fan as shown in Figure 4-1 and turn on, making sure air is flowing across the EVM.
4.2.2 Diagram
Figure 4-1. TPS40190EVM-001 Recommended Test Setup
Test Setup www.ti.com
6 TPS40190 Buck Controller Evaluation Module User's Guide SLUU232A – SEPTEMBER 2005 – REVISED JANUARY 2022
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