Datasheet

0
10
20
30
40
50
60
70
80
90
100
0 0.025 0.05 0.075 0.1 0.125 0.15 0.175 0.2
Efficiency (%)
Load Current (A)
V = 3.3 V,
F = 400 kHz
OUT
SW
V = 8 V
IN
V = 12 V
IN
V = 24 V
IN
V = 36 V
IN
V = 60 V
IN
0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1
1
Efficiency (%)
Load Current (A)
V = 8 V
IN
V = 12 V
IN
V = 24 V
IN
V = 36 V
IN
V = 60 V
IN
V = 3.3 V,
F = 400 kHz
OUT
SW
Test Setup and Results www.ti.com
2.2 Efficiency
The efficiency of this EVM peaks at a load current of about 0.07A with V
IN
= 8V, and then decreases as
the load current increases towards full load. Figure 1 shows the efficiency for the TPS54061EVM-142 at
an ambient temperature of 25°C.
Figure 1. TPS54061EVM-142 Efficiency
Figure 2 shows the efficiency for the TPS54061EVM-142 at lower output currents between 0.001A and
0.2A at an ambient temperature of 25°C.
Figure 2. TPS54061EVM-142 Low Current Efficiency
The efficiency may be lower at higher ambient temperatures, due to temperature variation in the drain-to-
source resistance of the internal MOSFET.
4
Evaluation Module for TPS54061 Synchronous Step-Down SWIFT SLVU721–May 2012
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