Datasheet

2.2 Efficiency
35
41
47
53
59
65
71
77
83
89
95
Efficiency − %
I
O
− OutputCurrent − A
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5
V =6V
I
V =5V
I
V =3V
I
V =3.3V
I
f =1600kHz
s
V =1.8V
O
Test Setup and Results www.ti.com
Table 4. EVM Connectors and Test Points
Reference Designator Function
J1 Sync input.
J2 V
OUT
, 3.3 V at 2 A maximum
J3 V
IN
(see Table 1 for V
IN
range)
J4 2-pin header for enable. Connect SS/ENA to ground to disable, open to enable.
TP1 Output voltage test point at OUT connector
TP2 V
IN
test point at V
IN
connector
TP3 Test point between voltage divider network and output. Used for loop response measurements.
TP4 PH test point
TP5 GND test point at V
IN
TP6 GND test point at OUT connector
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 1 shows the efficiency for the TPs54617EVM-414 at an
ambient temperature of 25 ° C.
Figure 1. TPS54617EVM-414 Efficiency
The efficiency may be lower at higher ambient temperatures, due to temperature variation in the
drain-to-source resistance of the internal MOSFET.
TPS54617EVM-414 6-A, SWIFT™ Regulator Evaluation Module4 SLVU279 – December 2008
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