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參數(shù)資料
| 型號： | 12IMR40-15-2 |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 45 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數(shù)： | 6/9頁 |
| 文件大?。?/td> | 207K |
| 代理商： | 12IMR40-15-2 |
Board Mountable
DC-DC Converters
IMR 40 Series
Edition 5/5.2000
6/9
Thermal Considerations
If a converter is operated, the relationship between the am-
bient temperature
TA and the case temperature TC depends
heavily on the conditions of operation and integration into a
system. The thermal conditions are influenced by input volt-
age, output current, airflow, temperature of surrounding
components and surfaces and the properties of the printed
circuit board. The specified maximum ambient temperature
TA max is therefore only an indicative value and under practi-
cal operating conditions, the ambient temperature
TA may
be higher or lower than this value.
Caution: The case temperature
TC measured at the
Measuring point of case temperature TC (see: Mechani-
cal Data) may under no circumstances exceed the speci-
fied maximum value. The installer must ensure that un-
der all operating conditions
TC remains within the limits
stated in the table:
Temperature specifications.
Connection in Parallel
The current limitation characteristics is fold-back. There-
fore, parallel connection is not possible.
Connection in Series
The outputs of one or more units can be connected in se-
ries. No suppressor diodes are required. Melcher, however
recommends to protect each individual output with a Zener
diode or preferably a suppressor diode, to avoid reverse
polarity that may occur if the output voltages do not rise si-
multaneously.
Protection Scheme
The IMR series is continuously short circuit protected by
means of input power limitation. The unit will not be dam-
aged if started up into a short circuit. After removal of the
short circuit, it will resume normal operation.
The IMR series is also no-load proof, meaning that the
regulation is still effective with no load and the output volt-
age does not rise. However, due to component tolerances,
oscillation could occur and ripple and noise can be outside
of specified values. If the converter is used in senitive elec-
tronic circuits with no-load conditions, it is recommended to
pre-load the outputs with at least 20% of the specified nomi-
nal load.
Electromagnetic Compatibility (EMC)
Filter recommendations for compliance with
CISPR 22/EN 55022, class B
Electromagnetic emission requirements according to EN
55022, class B can be easely achieved by adding an exter-
nal input filter consisting of three additional capacitors and
one common mode ring core choke.
The filter components should be placed as close as possi-
ble to the input of the converter.
Fig. 4
Input filter arrangement for 48 V DC types
Table 4: Input filter components
Input voltage
C1
C2
C3
Type
L1
Type
12, 24, 48 V DC
4.7
F
2.2
F
2.2
F
Al-Chip
3.9 mH
Siemens
100 V
(low ERS)
4 A
B 82724-
z.B. Siemens
B2402-N1
B 32522, B 32523
1 Only valid for input voltages up to 60 V DC.
C2
C3
L1
Vi+
Vi–
C1
07069
Table 3g: Output data for triple output types
Output
.. IMR 40-051515
Characteristics
Conditions
Output 1
Output 2
Output 3
min
typ
max
min
typ
max
min
typ
max
Unit
Uo
Output voltage
Ui nom, Io nom
4.9
5
5.1
14.7
15
15.3
-14.7
-15
-15.3
V
Uo max
Maximum output voltage
Ui min...Ui max
5.1
18
-18
Io
Output current
1200
6000
100
500
700 1
100
500
700 1
mA
uo
Output voltage noise
Ui nom
50
100
200
300
200
300
mVpp
(BW = 20 MHz)
Io nom
DUo U
Static line regulation
Ui min...Ui max
±1
±1%
Io nom
DUo I
Static load regulation
Ui nom
4.9
5
5.1
14.25
15
15.75
-14.25
-15
-15.75
V
(0.2...1)
Io nom
tr
Transient recovery time
500
s
aUo
Temperature coefficient
Ui nom, Io nom
±0.02
%/K
fs
Switching frequency
80
kHz
1 Total power may not exceed maximum power as stated in table Type Survey and Key Data.
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