Texas Instruments UCC27288EVM, Руководство пользователя

Страница: 5 / 19

+
Power
Supply #1
12V:
0.05A
CHA CHB
EVM
Function
Generator
Oscilloscope
+
DMM #1
DC Current
www.ti.com
Test Summary
5 SLUUCB3 – June 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
Using the UCC27288EVM
4.3.4 Oscilloscope Settings
Table 3 details the oscilloscope settings.
Table 3. Oscilloscope Settings
Bandwidth Coupling Termination Scale Settings Inverting
Channel A
500 MHz or above DC 1 M Ω or automatic 10 × or automatic OFF
Channel B
4.3.5 Bench Setup Diagram
The bench setup diagram includes the function generator and oscilloscope connections.
Use the following connection procedure, refer to Figure 1 .
• First, make sure the output of the function generator and power supplies are disabled before
connection.
• Apply function generator channel-A on HI_IN-GND.
• Apply function generator channel-B on LI_IN-GND.
• Power supply #1: apply positive lead to current input of DMM #1 and current output of DMM #1 to test
point VCC; apply negative lead to test point GND.
• Apply oscilloscope channel-1 probes on HO LD-HS, minimizing the loop area as much as possible.
Note the scope ground is connected to HS test point.
• Apply oscilloscope channel-2 probes on LO LD-GND, minimizing the loop area as much as possible.
Figure 1. Bench Setup Diagram and Configuration