Input Supply
(+)
(-)
(+)
(-)
DMM
(+)
(-)
DMM
(+)
(-)
Load
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Setup
3
SNVU693 – February 2020
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Copyright © 2020, Texas Instruments Incorporated
LM60440AQEVM User's Guide
1
Setup
This section describes the test points and connectors on the EVM and how to properly connect, set up,
and use the LM60440AQEVM.
1.1
Test Points
The test points on the top of the board can be used for connecting to the input and output of the EVM.
See Figure 2 for typical test setup. The functions of the test points connections are:
•
VIN -- Input supply to EVM including an EMI filter. Connect to a suitable input supply. Connect at this
point for conducted EMI test.
•
VINS -- Input voltage sense to the IC. Connect to a DMM to measure input voltage after EMI filter.
•
VOUT -- Output voltage of EVM. Connect to a desired load.
•
VOUTS -- Output voltage sense test point. This test point is a direct short to VOUT. Connecte to a
DMM to measure the output voltage.
•
GND -- Ground connections for the input supply, desired load, or test points.
•
VCC -- This test point is connected to the VCC pin. Connect to a DMM to monitor VCC regulation.
•
EN --This test point is connected to the EN pin. By default, a resistor divider (REN1 and REN2) from
VIN is used to enable the IC.
•
PGOOD -- This test point is connected to the PGOOD pin from the IC. It is an open-drain output of the
PGOOD pin. Can be tied to external supply through a pullup resistor or left open.
Figure 2. EVM Board Connections
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