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參數(shù)資料
| 型號： | IMS30 |
| 英文描述： | Dual outputs 5V & 3.3V ; 3.3V & 1.8V |
| 中文描述： | 5V的雙輸出 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大?。?/td> | 1153K |
| 代理商： | IMS30 |
Electrical Input Data
General conditions:
– T
A
= 25
C, unless
T
C
is specified.
– Shut down pin left open circuit (not connected).
– Trim input not connected.
Table 2: Input Data
Input
48 IMS
Characteristics
Conditions
min
typ
max
Unit
U
i
Input voltage range
1
T
C min
...
T
C max
I
o
= 0...
I
o nom
75
V DC
U
i nom
Nominal input voltage
48
U
i sur
Repetitive input surge
voltage
max 3 s
100
t
start up
Converter
start-up time
Switch on
U
i min
,
I
o
=
I
o nom 2
0.25
0.5
s
SD high
0.1
t
rise
Rise time
5
ms
I
i NL
No load input current
I
o
= 0,
U
i min
...
U
i max
SD high
30
40
mA
C
i
Input capacitance
for surge calculation
1.5
uF
U
SD
Shut down voltage
Unit disabled
–10
0.7
V DC
Unit operating
1.5
5
I
SD
Input current of SD input
1
2
mA
I
inr p
Inrush peak current
4
U
i
=
U
i nom
1.5
A
f
s
Switching frequency
U
i min
,
I
o nom
approx. 250
kHz
I
i rr
Reflected
ripple current
I
o
= 0...
I
o nom
60
mA
pp
u
i RFI
Input RFI levelconducted
EN 55022
3
B
1
U
i min
will not be as stated if
U
o
is increased above
U
o nom
by use of the Trim input. If the output voltage is set to a higher value,
U
i min
will be proportionally increased.
2
Measured with a resistive and the max. admissible capacitive load.
3
Measured with a lead length of 0.1 m, leads twisted.
4
Source impedance according to prETS 300132-2, version 4.3.
U
o nom
U
o
t
start up
t
rise
t
04008
Fig. 3
Converter start-up and rise time (applying U
i nom
).
Inrush Current
The inrush current has been kept as low as possible by
choosing a very small input capacitance.
A series resistor may be installed in the input line to further
limit this current.
Fig. 2
Typical inrush current at U
i nom
, P
o nom
versus time
(48 IMS30-0503-9G). Source impedance according to
prETS 300132-2, version 4.3 at U
i nom
.
Input Undervoltage Lock-out
The IMS30 converters are fitted with a defined input under-
voltage lock-out:
48 IMS 30
turn off
turn on
31.5 V
32 V
(approx. values)
–1
0
1
2
3
4
5
6
7
8
t
[ms]
–2
0
0.2
0.4
0.6
0.8
1
1.2
1.4
I
[A]
04058
3/11
3
2
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