MP028F036M12AL
Electrical Specifications (continued)
Efficiency Charts
98
94
90
86
82
78
74
Efficiency & Power Dissipation -55° Case
P D
17.5
15.0
12.5
10.0
7.5
5.0
2.5
98
94
90
86
82
78
74
Efficiency & Power Dissipation 25° Case
P D
17.5
15.0
12.5
10.0
7.5
5.0
2.5
70
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.0
3.5
70
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.0
3.5
Load Current (A)
Load Current (A)
V IN :
17 V
28 V
50 V
17 V
28 V
50 V
V IN :
17 V
28 V
50 V
17 V
28 V
50 V
Figure 6 — Efficiency and power dissapation vs. output current at 36 V OUT, ,
-40 °C T CASE
Figure 7 — Efficiency and power dissapation vs. output current at 36 V OUT ,
25 °C T CASE
98
94
90
86
82
Efficiency & Power Dissipation -100° Case
P D
17.5
15.0
12.5
10.0
7.5
4.0
3.5
3.0
2.5
No Load Power Dissipation vs. Line
78
5.0
74
2.5
2.0
70
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0.0
1.5
17
20
23
26
29
32
35
38
41
44
47
50
Load Current (A)
Input Voltage (V)
V IN :
17 V
28 V
50 V
17 V
28 V
50 V
T CASE :
-55 °C
25 °C
100 °C
Figure 8 — Efficiency and power dissapation vs. output current at 36 V OUT ,
100 °C T CASE
Figure 9 — No load power, unit enabled vs. line
98.0
97.5
97.0
96.5
96.0
95.5
95.0
94.5
94.0
Full Load Efficiency vs. T CASE
-55
-40
-25
-10
5
20
35
50
65
80
95
Case Temperature (C)
V IN
:
17 V
28 V
50 V
Figure 10 — Full load efficiency vs T CASE
PRM ? Regulator 28 Vdc Input
Page 5 of 14
Rev 3.5
1/2013
vicorpower.com
800 735.6200
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