PTEA420025 Datasheet, PDF (7/16 Pages) Texas Instruments – 20-A, 48-V INPUT, ISOLATED, 1/8th BRICK DC-DC CONVERTER

PTEA420025, PTEA420033
www.ti.com
SLTS288C – JUNE 2007 – REVISED OCTOBER 2010
TYPICAL CHARACTERISTICS
PTEA420033, V_O = 3.3 V ^{(1) (2)}
EFFICIENCY
vs
LOAD CURRENT
95
36 V48 ^V
90
85
80
75 V
60 V
75
70
65
V_O = 3.3 V
V_I (V)
60
36
48
55
60
75
50
0
5
10
15
20
I_O - Output Current - A
Figure 5.
90
OUTPUT RIPPLE
vs
LOAD CURRENT
12
V_O = 3.3 V
10
75 V
60 V
8
6
48 V
4
36 V
2
V_I (V)
36
48
60
75
0
0
5
10
15
20
I_O - Output Current - A
Figure 6.
AMBIENT TEMPERATURE
vs
LOAD CURRENT
POWER DISSIPATION
vs
LOAD CURRENT
8 ^{VO = 3.3 V}
7
6
75 V
5
60 V
48 V
4
36 V
3
V_I (V)
2
36
48
1
60
75
0
0
5
10
15
20
I_O - Output Current - A
Figure 7.
80
70
400 LFM
60
200 LFM
50
V_O = 3.3 V
V_I = 48 V
100 LFM
40
Airflow
400 LFM
200 LFM
30
100 LFM
Natural
Convection
Nat conv
20
0
5
10
15
20
I_O - Output Current - A
Figure 8.
(1) All data listed in Figure 5, Figure 6, and Figure 7 have been developed from actual products tested at 25°C. This data is considered
typical data for the dc-dc converter.
(2) The temperature derating curves represent operating conditions at which internal components are at or below manufacturer's maximum
rated operating temperature. Derating limits apply to modules soldered directly to a 100–mm × 100–mm, double-sided PCB with 2 oz.
copper. For surface mount packages, multiple vias (plated through holes) are required to add thermal paths around the power pins.
Please refer to the mechanical specification for more information. Applies to Figure 8.
Copyright © 2007–2010, Texas Instruments Incorporated
Submit Documentation Feedback
7
Product Folder Link(s): PTEA420025 PTEA420033