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4.1 Input/Output Connections
The TPS55340EVM-148 is provided with input/output connectors and test points as shown in Table 3.
Connect a power supply capable of supplying 5A to J6 through a pair of 20 AWG wires. The jumper
across JP1 in the ON position (1-2) must be in place. Connect the load to J7 through a pair of 20 AWG
wires. The maximum load current capability must be at least 2.5A. Wire lengths must be minimized to
reduce losses in the wires. Test point TP1 provides a place to monitor the V
IN
input voltage with TP3
providing a convenient ground reference. Use TP2 to monitor the output voltage with TP4 as the ground
reference.
Table 3. EVM Connectors and Test Points
Reference Designator Function
J1 V
IN
input voltage connector. (See Table 1 for V
IN
range.)
J2 V
OUT
output voltage connector
J3 2-pin header for primary side GND connections
J4 2-pin header for secondary side GND connections
J5 2-pin header for SYNC signal and GND connections
JP1 3-pin header for enable. Install jumper from pins 1-2 to enable or from pins 2-3 to disable.
TP1 V
IN
test point
TP2 V
OUT
test point
TP3 GND test point at V
IN
connector
TP4 GND test point at V
OUT
connector
TP5 SW test point
Test point between optocoupler, voltage divider network and output. Used for inner loop response
TP6
measurements.
TP7 Test point between voltage divider network and output. Used for outer loop response measurements.
TP8 COMP test point
4
TPS55340EVM-148, 8V to 24V Input, 5V Output Flyback Evaluation Module SLVU751A–July 2012–Revised June 2013
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