Texas Instruments TPS54233, Руководство пользователя

Страница: 5 / 19

0 20 40 60 80 100 120 140 160 180 200
V = 18 V
IN
V = 12 V
IN
V = 15 V
IN
V = 18 V
IN
50
55
60
65
70
75
80
85
90
95
100
Efficiency-%
I - Output Current - mA
O
Figure 2-2. TPS54233EVM-373 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.
2.3 Output Voltage Load Regulation
The load regulation for the TPS54233EVM-373 is shown in Figure 2-3 .
-0.04
-0.03
-0.02
-0.01
0
0.01
0.02
0.03
0.04
0.05
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
V = 15 V
IN
V = 18 V
IN
V = 8 V
IN
OutputRegulation-%
I - Output Current - A
O
V = 12 V
IN
Figure 2-3. TPS54233EVM-373 Load Regulation
Measurements are given for an ambient temperature of 25°C.
www.ti.com Test Setup and Results
SLVU264A – NOVEMBER 2008 – REVISED OCTOBER 2021
Submit Document Feedback
TPS54233 Step-Down Converter Evaluation Module User's Guide 5
Copyright © 2021 Texas Instruments Incorporated