Datasheet

-0.1
-0.08
-0.06
-0.04
-0.02
0
0.02
0.04
0.06
0.08
0.1
0 0.5 1 1.5 2 2.5
Output Voltage Deviation - %
Output Current - A
C002
V
OUT
= 5 V, fsw = 600kHz
V
IN
= 3.6 V
70
75
80
85
90
95
100
0 0.5 1 1.5 2 2.5
Efficiency - %
Output Current - A
Vin = 2.9V
Vin = 3.6V
Vin = 4.2V
C001
V
OUT
= 5 V, fsw = 600 kHz
Test Setup and Results www.ti.com
4.2 Efficiency
The efficiency of this EVM peaks at a load current of about 400 mA at 2.9-V input and 700 mA at 4.2-V
input, then decreases as the load current increases toward full load. Figure 1 shows the efficiency for the
EVM at an ambient temperature of 25°C.
Figure 1. TPS55330EVM-017 Efficiency
The efficiency may be lower at higher ambient temperatures, due to temperature variation in the drain-to-
source resistance of the internal MOSFET.
4.3 Output Voltage Load Regulation
Figure 2 shows the load regulation for the EVM.
Figure 2. TPS55330EVM-017 Output Voltage Load Regulation
Measurements are for an ambient temperature of 25°C.
4
TPS55330EVM-017 2.9-V to 4.2-V Input, 5.0-V Output Boost Evaluation SLVU930–July 2013
Module
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