Test Setup and Results

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2

Test Setup and Results

This section describes how to properly connect, set up, and use the TPS54519EVM-037 evaluation

module. The section also includes test results typical for the evaluation module and covers efficiency,

output voltage regulation, load transients, loop response, output ripple, input ripple, and start-up.

2.1

Input/Output Connections

The TPS54519EVM-037 is provided with input/output connectors and test points as shown in Table 4. A

power supply capable of supplying 3 A must be connected to J1 through a pair of 20 AWG wires. The load

must be connected to J4 through a pair of 20 AWG wires. The maximum load current capability must be at

least 4 A to use the full capability of this EVM. Wire lengths must be minimized to reduce losses in the

wires. Test-point TP1 provides a place to monitor the V

ground reference. TP6 is used to monitor the output voltage with TP7 as the ground reference.

Table 4. EVM Connectors and Test Points

Reference Designator

Function

J1

V

2-pin header to allow connection of an external track in voltage to SS/TR. Use with optional resistor

J2

divider of R5 and R6

J3

V

JP1

2-pin header for enable. Connect EN to ground to disable, open to enable.

JP2

2-pin header for to allow pullup of PWRGD to V

IN

TP1

V

TP2

GND test point at V

IN

TP3

Slow-start monitor test point

TP4

PH test point

TP5

PWRGD test point

TP6

GND test point

TP7

Test point between voltage divider network and output. Used for loop response measurements.

TP8

Output voltage test point at OUT connector

TP9

GND test point at OUT connector

4

TPS54519EVM-037, 5-A, SWIFT

™ Regulator— Evaluation Module

SLVU523

– September 2011

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