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參數(shù)資料
| 型號(hào)： | 48IMP3-1212-7S |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 3 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 179K |
| 代理商： | 48IMP3-1212-7S |
Board Mountable
DC-DC Converters
IMP 3 Series
Edition 5/5.2000
4/6
Table 3c: Output data for double output types
Output
.. IMP/IXP 3-05-05
.. IMP/IXP 3-12-12
.. IMP/IXP 3-15-15
Characteristics
Conditions
min
typ
max
min
typ
max
min
typ
max
Unit
U
o nom
Output voltage
U
i nom
, I
o nom
2
×
5
2
×
12
2
×
15
V
U
o
2
×
4.90
2
×
5.10
2
×
11.76
2
×
12.24 2
×
14.70
2
×
125
2
×
100
2
×
100
2
×
15.30
I
o nom
Nominal output current:
24 IMP 3
48 IMP 3
2
×
250
2
×
200
2
×
200
2
×
100
2
×
80
2
×
80
mA
U
i
= 9...11 V DC
U
i
= 18...21 V DC
u
o
Output voltage noise
(BW = 20 MHz)
U
i min
...U
i max
(0.2...1) I
o nom
150
150
150
mV
pp
D
U
o U
D
U
o I
a
Uo
Static line regulation
U
i min
...U
i max
, I
o nom
±
1
±
1
±
1
%
Static load regulation
U
i nom
, (0.2...1) I
o nom
±
3
±
3
±
3
Temperature coefficient
U
i nom
, I
o nom
±
0.02
±
0.02
±
0.02
%/K
f
s
Switching frequency
50
50
50
kHz
Connection in Parallel
The outputs of several units can be connected in parallel.
However, the use of a single unit with a higher power rating
is a better choice because of uneven power distribution
among the outputs connected in parallel. It is recom-
mended to select converters to be connected in parallel
with very small output voltage differences at full load (i.e.
<
±
0.5%). A decoupling diode is not required but recom-
mended.
Protection Scheme
The IMP 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 IMP 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.
Auxiliary Function
SD-input
The output voltage is turned on if the pin 20 is open or a
voltage of 8...10 V DC is applied. If the voltage at pin 20 is
between
–
0.3 and 2 V DC, the output voltage is turned off.
The maximum voltage without damage is limited to 20 V
and the maximum allowed current is limited to 3 mA.
Thermal Considerations
If a converter is operated, the relationship between the am-
bient temperature T
A
and the case temperature T
C
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
T
A max
is therefore only an indicative value and under practi-
cal operating conditions, the ambient temperature T
A
may
be higher or lower than this value.
Caution:
The case temperature T
C
measured at the
Measuring point of case temperature T
C
(see: Mechani-
cal Data) may under no circumstances exceed the speci-
fied maximum value. The installer must ensure that un-
der all operating conditions T
C
remains within the limits
stated in the table: Temperature specifications.
Connection in Series
The outputs of one or more units can be connected in se-
ries. No suppressor diodes are required. Power-One how-
ever recommends to protect each individual output with a
Zener diode or preferably a suppressor diode, to avoid re-
verse polarity that may occur if the output voltages do not
rise simultaneously.
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