Texas Instruments TPS54231, Руководство пользователя

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Table 2-1. EVM Connectors and Test Points
Reference Designator Function
J1 V
IN
(see Table 1-1 for V
IN
range)
J2 2-pin header for enable. Connect EN to ground to disable, open to enable.
J3 2-pin header for slow start monitor and GND.
J4 V
OUT
, 3.3 V at 2 A maximum
TP1 V
IN
test point at V
IN
connector
TP2 GND test point at V
IN
TP3 PH test point
TP4 Test point between voltage divider network and output. Used for loop response measurements.
TP5 Output voltage test point at OUT connector
TP6 GND test point at OUT connector
2.2 Efficiency
The efficiency of this EVM peaks at a load current of about 0.5 A - 1 A and then decreases as the load
current increases towards full load.
Figure 2-1 shows the efficiency for the TPS54231EVM-372 at an ambient
temperature of 25°C.
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
Output Current(A) - I
O
Ef
ficiency-%
V = 15 V
IN
V = 24 V
IN
V = 28 V
IN
V = 7 V
IN
Figure 2-1. TPS54231EVM-372 Efficiency
Figure 2-2 shows the efficiency for the TPS54231EVM-372 at lower output currents between 0.02 A and 0.20 A
at an ambient temperature of 25°C.
Test Setup and Results www.ti.com
4 TPS54231 Step-Down Converter Evaluation Module User's Guide SLVU263A – AUGUST 2008 – REVISED OCTOBER 2021
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