PTB78560A_16 Datasheet, PDF (10/27 Pages) Texas Instruments – AUTO-TRACK™ SEQUENCING

PTB78560A, PTB78560B
PTB78560C
SLTS249 – JUNE 2005
TYPICAL CHARACTERISTICS (continued)
PTB78560A Characteristic Data (V_O = 5 V) ⁽⁵⁾⁽⁶⁾
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EFFICIENCY
vs
OUTPUT CURRENT
100
95
90
85
V_I=24 V
80
V_I=18 V
75
70
V_I=36 V
65
V_I=48 V
60
55
V_I=60 V
50
45
40
0
1
2
3
4
5
6
I_O − Output Current − A
Figure 11.
POWER DISSIPATION
vs
OUTPUT CURRENT
8
7
6
V_I=60 V
5
V_I=48 V
4
3
2
1
V_I=36 V
V_I=24 V
V_I=18 V
0
0
1
2
3
4
5
6
I_O − Output Current − A
Figure 12.
OUTPUT VOLTAGE RIPPLE
vs
OUTPUT CURRENT
60
V_I=48 V
50
V_I=60 V
40
30
V_I=36 V
20
V_I=24 V
V_I=18 V
10
0
0
1
2
3
4
5
6
I_O − Output Current − A
Figure 13.
TEMPERATURE DERATING
vs
OUTPUT CURRENT (V_I = 24 V)
90
TEMPERATURE DERATING
vs
OUTPUT CURRENT (V_I = 48 V)
90
80
80
70
400 LFM
60
200 LFM
70
400 LFM
60
200 LFM
50
100 LFM
40
0 LFM
(Natural Convection)
30
50
100 LFM
40
0 LFM
(Natural Convection)
30
20
0
1
2
3
4
5
6
I_O − Output Current − A
Figure 14.
20
0
1
2
3
4
5
6
I_O − Output Current − A
Figure 15.
(5) All data listed in Figure 11, , and Figure 12 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. Applies to Figure 14, and Figure 15.
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