Input/Output Connections
2-2
2.1
Input/Output Connections
The TPS54350EVM−235 has the following two input/output connectors: V
I
(J1), and V
O
(J3). A diagram showing the connection points is shown in
Figure 2−1. A power supply capable of supplying 5 A should be connected to
J1 through a pair of 20 AWG wires. The load should be connected to J2 through
a pair of 20 AWG wires. The maximum load current capability should be 3 A.
Wire lengths should be minimized to reduce losses in the wires. Test point TP9
provides a place to easily connect an oscilloscope voltage probe to monitor the
output voltage. The TPS54350 is intended to be used as a point of load
regulator. In typical applications it is usually located close to the input voltage
source. When using the TPS54350EVM−235 with an external power supply
as the source for V
I
, an additional bulk capacitor may be required, depending
upon the output impedance of the source and length of the hook-up wires. The
test results presented are obtained using a 47
µ
F, 25 V additional input
capacitor. Alternately, C1 may be populated with an input filter capacitor.
Figure 2−1. Connection Diagram
−
+
Optional Input
Capacitor
−
+
+
−
Voltmeter
Power Supply
3−4 V, 5 A
Voltmeter
Load
0 − 3A
Oscilloscope
CH1 CH2