Test Setup and Results
2
Test Setup and Results
This section describes how to properly connect, set up, and use the TPS54334EVM-722 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 TPS54334EVM-722 is provided with input/output connectors and test points as shown in
. 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 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
IN
input voltages with TP2 providing a convenient
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
VIN (see
for V
IN
range)
J2
VOUT, 3.3 V at 3 A maximum
JP1
2-pin header for enable. Connect EN to ground to disable, open to enable.
JP2
2-pin header for V
DD
. Connect VOUT to V
DD
as the power supply.
TP1
V
IN
test point at VIN connector
TP2
GND test point at VIN
TP3
PGOOD test point
TP4
PH test point
TP5
Test point between voltage divider network and output. Used for loop response measurements.
TP6
Output voltage test point at OUT connector
TP7
GND test point at VOUT connector
TP8
V
DD
test point at the VDD connector
TP9
GND test point at the VDD connector
TP10
EN test point
4
TPS54334EVM-722 3-A Regulator Evaluation Module
SLVUAH4 – August 2015
Copyright © 2015, Texas Instruments Incorporated