Texas Instruments TPS562231EVM, User Manual, Page: 4 / 18

Test Setup and Results
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4 SLUUBZ4 – February 2019
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Copyright © 2019, Texas Instruments Incorporated
TPS562231EVM 2-A, Synchronous step-down converter evaluation module
4 Test Setup and Results
This section describes how to properly connect, set up, and use the TPS562231EVM. The section also
includes test results typical for the evaluation modules and efficiency, output load regulation, output line
regulation, load transient response, output voltage ripple, input voltage ripple, start-up, and switching
frequency.
4.1 Input/Output Connections
The TPS562231EVM is provided with input/output connectors and test points as shown in Table 4 . A
power supply capable of supplying 2 A must be connected to J1 through a pair of 20-AWG wires. The load
must be connected to J2 through a pair of 20-AWG wires. The maximum load current capability is 2 A.
Wire lengths must be minimized to reduce losses in the wires. Test point TP3 provides a place to monitor
the V
IN
input voltages with TP4 providing a convenient ground reference. TP9 is used to monitor the output
voltage with TP5 as the ground reference.
Table 4. Connection and Test Points
REFERENCE DESIGNATOR FUNCTION
J1 V
IN
(see Table 1 for V
IN
range)
J2 V
OUT
, 3.3 V at 2-A maximum
JP1 EN control. Shunt EN to GND to disable
TP1 V
IN
positive power point
TP2,TP11 GND power point
TP3 V
IN
positive monitor point
TP4,TP5,TP12,TP13 GND monitor test point
TP6 EN test point
TP7 Switch node test point
TP8 Test point for loop response measurements
TP9 V
OUT
positive monitor point
TP10 V
OUT
positive power point
4.2 Start-Up Procedure
1. Ensure that the jumper at JP1 (Enable control) pins 1 and 2 are covered to shunt EN to GND, disabling
the output.
2. Apply appropriate V
IN
voltage to VI (J1-2) and GND (J1-1).
3. Move the jumper at JP1 (Enable control) pins 1 and 2 (EN and GND) to enable the output.