Texas Instruments LM7480-Q1, Руководство пользователя, Страница: 6 / 20

Figure 5-1. LM74800EVM-CS Test Setup
5.1 Initial Setup
Test setup used for evaluating LM74800EVM-CS is shown in Figure 5-1 . Steps to be followed before testing the
evaluation module are:
• Connect the power supply and load to LM74800EVM-CS.
• Set the power supply output to 12 V and current limit to 5 A.
• Set load to 200 mA or a load value less than 5 A.
• Set the jumpers to default jumper setting as shown in
Table 5-1 .
5.2 Power Up
To verify the startup behavior, connect the oscilloscope to the evaluation module:
• Channel 1 - Input Voltage (Test Point Label VIN)
• Channel 2 - A pin Voltage (Test Point Label VA)
• Channel 3 - DGATE Voltage (Test Point Label DGATE)
• Channel 4 - HGATE Voltage (Test Point Label HGATE)
Set the load to 200 mA, trigger to Channel 1 rising and turn ON the power supply. Start-up behavior of
LM74800EVM-CS is captured in
Figure 5-2 .
Test Setup and Results www.ti.com
6 LM7480-Q1 Evaluation Module for Unsuppressed Load Dump Protection:
LM74800EVM-CS SLVUBU4 – MARCH 2021
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