B
Signal
Injection
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network analyzer
A
GND
Setup
5
SNVU617 – January 2020
Copyright © 2020, Texas Instruments Incorporated
LM63635EVM EVM User’s Guide
1.2
Test Points
•
VIN_EMI -
Input supply to EVM. Connect to a suitable input supply. See the
V, 1.5-A, and 2.5-A Automotive Step-down Voltage Converter Data Sheet
for input supply
requirements.
•
GND -
System power ground
•
VOUT -
Power output of EVM. Connect to desired load.
•
VOUTS -
Output voltage sense connection. Connect to DMM. It is also used for frequency response
analyzer connection (do not use for current; sense only).
•
VINS -
Input voltage sense connection. Connect to DMM (do not use for current; sense only).
•
GNDS -
Ground sense point for analog measurements. Connect to DMM (do not use for current; sense
only).
•
EN -
Connection for external EN logic input. Connect controlling logic to EN test point for external
enable control.
•
RESET -
Connected to the RESET pin of the IC. It is used as a flag output. The reset function can be
monitored at this test point. Pullup resistor, R
PULLUP
, must be populated. A typical value for pullup
resistor is 100 k
Ω
.
•
SYNC -
Connected to the SYNC pin of the IC. Connection to an external clock or synchronization
signal enables the IC switching frequency to follow the synchronization signal.
•
TPGND1, TPGND2 -
System power ground
Figure 4. FRA Setup
