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參數(shù)資料
| 型號： | EK2540-7RD0B2 |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 150 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | METAL, CASE K02, MODULE |
| 文件頁數(shù)： | 28/31頁 |
| 文件大小： | 637K |
| 代理商： | EK2540-7RD0B2 |
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Cassette Style
150 Watt DC-DC Converters
K Series
Edition 01/01.2000
6/31
Input Fuse
A fuse mounted inside the converter protects the module
against severe defects. This fuse may not fully protect the
module when the input voltage exceeds 200 V DC! In appli-
cations where the converters operate at source voltages
above 200 V DC an external fuse or a circuit breaker at sys-
tem level should be installed!
Table 3: Fuse Specification
Module
Fuse type
Fuse rating
AK 1
fast-blow
Little fuse 314
30.0 A, 125 V
BK 1
fast-blow
Little fuse 314
25.0 A, 125 V
CK 2
slow-blow
SPT
12.5 A, 250 V
DK 2
slow-blow
SPT
8 A, 250 V
EK 2
slow-blow
SPT
4 A, 250 V
FK 2
slow-blow
SPT
16 A, 250 V
1 Fuse size 6.3
× 32 mm
2 Fuse size 5
× 20 mm
Input Under-/Overvoltage Lock-out
If the input voltage remains below approx. 0.8
Ui min or ex-
ceeds approx. 1.1
Ui max, an internally generated inhibit sig-
nal disables the output(s). When checking this function the
absolute maximum input voltage rating
Ui abs should be
considered! Between
Ui min and the undervoltage lock-out
level the output voltage may be below the value defined in
table:
Output data (see: Technical Information: Measuring
and Testing).
Hold-up Time versus relative Input Voltage
Inrush Current Peak Value
The inrush current peak value (initial switch-on cycle) can
be determined by following calculation: (See also:
Input In-
rush Current Characteristic)
Ui source
Iinr p = ––––––––––––––––
(
Rs ext + Ri + RNTC)
Rs ext
Ri
RNTC
Iinr p
Ui source
+
Ci int
05109
Fig. 4
Equivalent circuit for input impedance
Reverse Polarity
The units are not protected against reverse polarity at the
input to avoid unwanted power losses and may be dam-
aged.
Input Inrush Current Characteristic
1
23
t [ms]
0
50
100
Ii inr [A]
150
CK
EK
DK
05108
Fig. 5
Typical inrush current versus time at Ui max, Rext = 0.
For AK, BK and FK as well as for application related val-
ues use the formula given in Inrush Current Peak Value to
get realistic results.
2
345
6
1
0.10
1.00
Ui
____
Ui min
t h (ms)
10.00
100.00
DK
CK/FK
EK
AK
BK
04045
Fig. 6
Typical hold-up time th versus relative input voltage
Ui/Uimin. The DC-DC converters require an external series
diode in the input path if other loads are connected to the
same input supply lines.
Static Input Current Characteristic
Fig. 3
Typical input current versus relative input voltage
23
4
5
1
0.40
1.00
10.00
U
i
____
U
i min
I
i (A)
20.00
04044
FK
CK
EK
DK
BK
AK
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