PTB48560A Datasheet, PDF (10/28 Pages) Texas Instruments – 30-W, 48-V INPUT DC/DC CONVERTERS WITH AUTO-TRACK TM SEQUENCING

PTB48560A, PTB48560B
PTB48560C
SLTS236A – MARCH 2005 – REVISED OCTOBER 2005
TYPICAL CHARACTERISTICS (continued)
PTB48560C Characteristic Data (V_O = 12 V) ⁽⁵⁾⁽⁶⁾
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EFFICIENCY
vs
OUTPUT CURRENT
100
V_I = 36 V
90
V_I = 48 V
80
V_I = 60 V
70
V_I = 75 V
60
50
0
0.5
1
1.5
2
2.5
I_O - Output Current - A
Figure 9.
OUTPUT VOLTAGE RIPPLE
vs
OUTPUT CURRENT
100
80
V_I = 75 V
V_I = 60 V
60
V_I = 48 V
40
20
0
0
V_I = 36 V
0.5
1
1.5
2
2.5
I_O - Output Current - A
Figure 10.
POWER DISSIPATION
vs
OUTPUT CURRENT
6
TEMPERATURE DERATING
vs
OUTPUT CURRENT
90
5
V_I = 75 V
4
V_I = 60 V
3
V_I = 48 V
2
1
V_I = 36 V
80
100 LFM
70
200 LFM
60
50
40
30
400 LFM
Nat conv
0
0
0.5
1
1.5
2
2.5
I_O - Output Current - A
Figure 11.
20
0
0.5
1
1.5
2
2.5
I_O - Output Current - A
Figure 12.
(5) All data listed in Figure 9, Figure 10, and Figure 11 have been developed from actual products tested at 25°C. This data is considered
typical data for the dc-dc converter.
(6) 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 12.
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