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參數資料
| 型號： | 12IYR1-12-12-T |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 1 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁數： | 3/8頁 |
| 文件大小： | 183K |
| 代理商： | 12IYR1-12-12-T |
1 Watt-Family
DC-DC Converters <40 W
Rugged Environment
6 - 4
Edition 2/96 - Melcher AG
MELCHER
The Power Partners.
6.1
Safety Instructions
If the output circuit of a DC-DC converter is operator-acces-
sible according to the IEC 950 related safety standards, it
shall be an SELV circuit (Safety Extra Low Voltage circuit,
i.e. a circuit, separated from mains by at least basic insula-
tion, that is so designed and protected that under normal
and single fault conditions, the voltage between any two
conductors and between any conductor and earth does not
exceed DC 60 V).
In the following section an interpretation is provided of the
IEC 950 safety standard with respect to the safety status of
the output circuit. However, it is the sole responsibility of the
installer or user to assure the compliance with the relevant
and applicable safety standards.
If the following table is observed, the output of any DC-DC
converter is considered to be an SELV circuit up to a nomi-
nal output voltage of 30 V (2 x 15 V in series).
Table 2: Insulation concept for SELV circuits
Nominal
Minimum required grade
Maximum
Minimum required
Minimum required grade of
Resulting safety
mains
of isolation, to be
output
safety status of the
isolation between the input
status of the
supply
provided by the AC-DC
voltage
front end output circuit
and the output of the DC-DC
DC-DC converter
voltage
front end, including mains from the
converter, provided by
output circuit
(AC)
supplied battery charger
front end
the converter
≤250 V
Basic
≤60 V
Earthed SELV circuit 1
Operational
SELV circuit
Double or reinforced
≤60 V
SELV circuit
Operational
SELV circuit
1 The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC 950.
Immunity to Environmental Conditions
Thermal Considerations
Table 3: Temp. specification values given are valid for air pressures in the range 800...1200 hPa (800...1200 mbar)
Characteristics
Conditions
Standard -N
Option -T
Option -S
Unit
min
max
min
max
min
max
TA
Ambient temperature
Ui min...Ui max
0
71
–25
71
–40
85
°C
TC
Case temperature
Io = 0...Io nom
0
91
–25
91
–40
105
TS
Storage temperature
not operational
–55
105
The case temperature
TC must not exceed the maximum value. In applications with limited air circulation, additional meas-
ures must be taken (either larger spacing or a fan) to avoid case temperatures higher than
TC max!
Table 4: MTBF
Values at specified
Modules Types
Ground Benign
Ground Fixed
Ground Mobile
Unit
Case Temperature
40
°C40°C70°C40°C70°C
MTBF according to
Single output
7'400'000
3'200'000
260'000
880'000
60'000
h
MIL-HDBK-217F
Double and dual outputs
5'700'000
2'500'000
200'000
670'000
45'000
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