Datasheet

UEI25 Series
Single Output Isolated 25-Watt DC/DC Converters
MDC_UEI25W.B09 Page 9 of 24
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UEI25-033-D48 PERFORMANCE DATA
On/Off ENABLE DELAY (Vin=48, Vout=nom, Iout=7.5A, Cload=0uF, Ta=+25°C.,
ScopeBW=20Mhz) Trace 1= Enable. Trace 4=Vout
On/Off ENABLE DELAY (Vin=48, Vout=nom, Iout=.7575mA, Cload=0uF, Ta=+25°C.,
ScopeBW=20Mhz) Trace 1= Enable. Trace 4=Vout
Maximum Current Temperature Derating @sea level
(airfl ow is from input to output)
Thermal image with "hot spot" at full load current with 63°C ambient, air fl owing at
minimal rate of 65 LFM. Air is fl owing across the converter from +Vo to -Vo at 48V input.
Identifi able and recommended maximum value to be verifi ed in application.
5
6
7
8
30
35
40
45
50
55
60
65
70
7
5
80
85
A
m
A
A
b
i
e
n
t
T
e
m
p
e
r
a
t
u
r
e
(°C
)
0.33 m/s (65
L
F
M)
0.5 m/s (100
0.
L
F
M)
(200 to 400
1.0 to 2.0 m/s
(
2
00 to 40
0
L
F
M)
=
75
V
Vi
n
=
O
u
t
p
u
t
C
urrent
(
A
(
(
mps
)
0.33 to 2.0 m
/
s
(
65 to 400
L
F
M)
V
in = 36V
,
48V
,
and 60
V
Effi ciency vs. Line Voltage and Load Current @ 25°C
7
12
17
22
27
32
37
42
47
52
57
62
67
72
77
82
87
92
0.2 0.7 1.2 1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7 6.2 6.7 7.2 7.7
Vin = 36V
Vin = 48V
Vin = 60V
Vin = 75V
Load Current (Amps)
Efficiency (%)