PTB48560A Datasheet, PDF (8/28 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
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PTB48560B Characteristic Data (V_O = 3.3 V) ⁽¹⁾⁽²⁾
EFFICIENCY
vs
OUTPUT CURRENT
90
V_I = 36 V
80
70
V_I = 75 V
V_I = 60 V
60
V_I = 48 V
50
40
OUTPUT VOLTAGE RIPPLE
vs
OUTPUT CURRENT
60
50
V_I = 75 V
40
V_I = 60 V
30
20
V_I = 48 V
10
V_I = 36 V
30
01 2 3 4 5 6 7 8
IO - Output Current - A
Figure 1.
0
0 1 2 34 5 6 7 8
IO - Output Current - A
Figure 2.
POWER DISSIPATION
vs
OUTPUT CURRENT
7
6
V_I = 75 V
TEMPERATURE DERATING
vs
OUTPUT CURRENT
90
400 LFM
80
5
V_I = 60 V
4
V_I = 48 V
3
70
200 LFM
60
100 LFM
50
2
V_I = 36 V
1
40
Nat
conv
30
0
012 34 567 8
IO - Output Current - A
Figure 3.
20
0
2
4
6
8
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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