Input/Output Connections; Table 3-1. Connectors And Jumpers; Table 3-2. Test Points - Texas Instruments TPS54KC23EVM User Manual

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3.1 Input/Output Connections

The TPS54KC23EVM is provided with input connectors, output connectors, and test points as shown in
3-1 and Table 3-2.
To support the minimum input voltage with the full rated load on both outputs with the default EVM, a power
supply capable of supplying greater than 10 A must be connected to the VIN and PGND terminal blocks (J1 for
U1, and J3 for U2) through a pair of 18-AWG wires or better.
For U1, the load must be connected to J2 and for U2, the load must be connected to J4. A pair of 10-AWG wires
or better must be used for each connection. With the maximum current limit setting, the maximum load current
capability is near 33 A before the TPS54KC23 goes into current limit. Wire lengths must be minimized to reduce
losses in the wires.
REFERENCE
NAME
DESIGNATOR
J1 VIN1
J2 VOUT1
J3 VIN2
J4 VOUT2
J5 EN2
J8
REFERENCE
NAME
DESIGNATOR
TP1 VIN1
TP2 SW1
TP3 VOUT1
TP4 REG_GND1
TP5 VCC1
TP6 PG1
TP7 BODE1
TP8 REG_VOUT1
TP9 PGND1
TP10 AGND1
TP11 VOUT_U1
TP12 VIN2
TP13 VOUT2
TP14 SW2
TP15 EN2
TP16 VCC2
TP17 REG_GND2
TP18 PG2
TP19 BODE2
TP20 REG_VOUT2
SLVUCU8 – JANUARY 2024
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Table 3-1. Connectors and Jumpers

RELATED IC
U1 VIN screw terminal to connect input voltage (see
U1 VOUT screw terminal to connect load to output
U2 VIN screw terminal to connect input voltage (see
U2 VOUT screw terminal to connect load to output
EN pin selection header:
Open = (EN pin shorted to AGND)
U2
Short = (EN pin connected to VIN pin through resistor divider)
MSEL selection header. Use shunt to select MSEL resistor (see
- U2
MSEL pin selection)

Table 3-2. Test Points

RELATED IC
U1 VIN test point. Use this for efficiency measurements.
U1 SW node test point
U1 VOUT test point
U1 PGND test point. Use this for efficiency measurements.
U1 VCC test point
U1 PGOOD output test point (pulled up to VCC pin through a 10-kΩ resistor)
Test point between voltage divider network and output voltage. Used for Bode
U1
plot measurements.
VOUT test point. Use this for efficiency, output regulation, and bode plot
U1
measurements.
U1 PGND test point. Use this for efficiency measurements.
U1 AGND test point
SMB connector to measure output voltage. When using this test point, set the
U1 scope for 1-MΩ termination. When using 50-Ω termination, a 2:1 divider is
created.
U2 VIN test point
U2 VOUT test point
U2 SW test point
U2 EN test point
U2 VCC test point
U2 PGND test point. Use this for efficiency measurements.
U2 PGOOD output test point (pulled up to VCC pin through a 10-kΩ resistor)
Test point between voltage divider network and output voltage. Used for Bode
U2
plot measurements.
VOUT test point. Use this for efficiency, output regulation, and bode plot
U2
measurements.
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FUNCTION
Table 1-1
Table 1-1
FUNCTION
TPS54KC23EVM Step-Down Converter Evaluation Module
Test Setup and Results
Table
for VIN range)
for VIN range)
Table 2-1 for
7