PTEA404120 Datasheet, PDF (5/14 Pages) Texas Instruments – 50-W, 48-V INPUT, 12-V OUTPUT, ISOLATED DC/DC CONVERTER

PTEA404120
www.ti.com
SLTS274A – DECEMBER 2006 – REVISED JANUARY 2007
TYPICAL CHARACTERISTICS
PTEA404120, V_O = 12 V
All data listed in the graphs below have been developed from actual products tested at 25°C. This data is considered typical
data for the DC-DC Converter. SOA curves represent operating conditions at which internal components are at or below
manufacturer's maximum rated operating temperature. For Figure 4 Safe Operating Area, V_I = 48 V. For surface mount
versions (AS and AZ suffix), multiple plated through-holes must be utilized to achieve comparable thermal performance.
Please reference the mechanical specification for more information.
EFFICIENCY
vs
LOAD CURRENT
95
90 ^{VO = 35 V}
85
80
75
V_O = 48 V
V_O = 75 V
70
65
60
VO
75 V
55
48 V
35 V
50
0 0.6 1.2 1.8 2.4 3.0 3.6 4.2
I_O − Output Current − A
Figure 1.
OUTPUT RIPPLE
vs
LOAD CURRENT
60
V_O = 75 V
50
V_O = 48 V
40
V_O = 35 V
30
20
VO
10
75 V
48 V
35 V
0
0 0.6 1.2 1.8 2.4 3.0 3.6 4.2
I_O − Output Current − A
Figure 2.
AMBIENT TEMPERATURE
vs
LOAD CURRENT
90
300/400
80
200
70
100
60
Natural Convection
50
40
LFM
300/400
200
30
100
Natural Convection
20
0 0.6 1.2 1.8 2.4 3.0 3.6 4.2
I_O − Output Current − A
Figure 4.
POWER DISSIPATION
vs
LOAD CURRENT
7
6
5
V_O = 48 V
4
V_O = 75 V
3
2
VO
75 V
1
48 V
V_O = 35 V
35 V
0
0 0.6 1.2 1.8 2.4 3.0 3.6 4.2
I_O − Output Current − A
Figure 3.
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