Datasheet

EFFICIENCY
0
10
20
30
40
50
60
70
80
90
100
0 0.5 1 1.5 2 2.5 3
Output Current - A
Efficiency - %
Vin = 3.3 V
Vi n = 5 V
Test Setup and Results www.ti.com
Table 4. EVM Connectors and Test Points
Reference Designator Function
J1 V
IN
(see Table 1 for V
IN
range).
J2 V
OUT
, 1.8 V at 3 A maximum.
JP1 Jumper for ENABLE function. Install jumper for disable. Open for enable.
JP2 Jumper for PWRGD pull up. Install jumper to pull PWRGD to V
IN
through 100 kΩ.
TP1 V
IN
test point at V
IN
connector.
TP2 GND test point at V
IN
.
TP3 PH test point EN test point. Connect EN to ground to disable, open to enable.
TP4 Slow start monitor test point.
TP5 Test point between R8 and R6. Used for loop response measurements.
TP6 Output voltage test point at OUT connector.
TP7 GND test point at OUT connector.
TP8 PWRGD test point.
2.2 Efficiency
The efficiency of this EVM peaks at a load current of about 0.5 A with V
IN
= 3.3 V, and then decreases as
the load current increases towards full load. Figure 1 shows the efficiency for the TPS54319EVM-626 at
an ambient temperature of 25°C.
Figure 1. TPS54319EVM-626 Efficiency
4
TPS54319EVM-626 3-A, SWIFT™ Regulator Evaluation Module SLVU377–May 2010
Copyright © 2010, Texas Instruments Incorporated