PTMA403033 Datasheet, PDF (7/33 Pages) Texas Instruments – 10-W, 36-V to 75-V INPUT, 1500-V ISOLATION, DC/DC CONVERTERS

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PTMA403033
PTMA402050
PTMA401120
SLTS259A – FEBRUARY 2006 – REVISED MARCH 2006
TYPICAL CHARACTERISTICS
PTMA403033 Characteristic Data (V_O = 3.3 V) ⁽¹⁾⁽²⁾
EFFICIENCY
vs OUTPUT CURRENT
85
V_IN = 48 V
V_IN = 36 V
80
POWER DISSIPATION
vs OUTPUT CURRENT
3.0
V_IN = 36 V
2.5
75
V_IN = 60 V
70
65
V_IN = 75 V
60
55
0
60
50
40
0.5 1.0
1.5
2.0 2.5
3.0
I_O − Output Current − A
Figure 1.
OUTPUT VOLTAGE RIPPLE
vs OUTPUT CURRENT
V_IN = 36 V
V_IN = 48 V
30
V_IN = 60 V
20
V_IN = 75 V
10
2.0
1.5
V_IN = 75 V
1.0
V_IN = 48 V
0.5
V_IN = 60 V
0
0
0.5 1.0
1.5
2.0 2.5
3.0
I_O − Output Current − A
Figure 2.
TEMPERATURE DERATING
vs OUTPUT CURRENT
90
80
200 LFM
Natural
70
Convection
60
50
40
30
0
0
0.5 1.0
1.5
2.0
2.5
I_O − Output Current − A
Figure 3.
20
0
0.5
1.0
1.5
2.0 2.5
3.0
I_O − Output Current − A
Figure 4.
(1) All data listed in Figure 1, Figure 2, and Figure 3 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 4.
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