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参数资料
| 型号： | PKF4918CSI |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 9 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | 0.315 INCH HEIGHT, SMD-18 |
| 文件页数： | 3/8页 |
| 文件大小： | 222K |
| 代理商： | PKF4918CSI |
3
EN/LZT 146 024 R1A Ericsson Power Modules AB, March 2003
Fundamental circuit diagram
Single output
Electrical Data
Safety
The PKF 4918 CSI DC/DC power module is designed in accordance
with EN 60 950, Safety of information technology equipment
including electrical business equipment.
The PKF power modules are recognized by UL and meet the
applicable requirements in UL 1950 Safety of information technology
equipment, the applicable Canadian safety requirements and UL 1012
Standard for power supplies.
The DC/DC power module shall be installed in an end-use equipment
and considerations should be given to measuring the case temperature
to comply with TCmax when in operation. Abnormal component tests
are conducted with the input protected by an external
15 A fuse. The need for repeating these tests in the end-use
appliance shall be considered if installed in a circuit having higher
rated devices.
When the supply to the DC/DC power module meets all the
requirements for SELV (<60Vdc), the output is considered to remain
within SELV limits (level 3). The isolation is an operational insulation
in accordance with EN 60 950.
The DC/DC power module is intended to be supplied by isolated
secondary circuitry and shall be installed in compliance with the
requirements of the ultimate application. If they are connected to a
60 V DC system reinforced insulation must be provided in the power
supply that isolates the input from the mains. Single fault testing in
the power supply must be performed in combination with the
DC/DC power module to demonstrate that the output meets the
requirement for SELV. One pole of the input and one pole of the
output is to be grounded or both are to be kept oating.
The terminal pins are only intended for connection to mating
connectors of internal wiring inside the end-use equipment.
These DC/DC power modules may be used in telephone equipment
in accordance with paragraph 34 A.1 of UL 1459 (Standard for
Telephone Equipment, second edition).
The galvanic isolation is veried in an electric strength test. Test
voltage (VISO) between input and output is 1,500 Vdc for 60 s. In
production the test duration may be decreased to 1 s.
The capacitor between input and output has a value of 2,2 nF and the
leakage current is less than 1A @ 53 Vdc.
The case is designed in non-conductive epoxy. Its ammability
rating meets UL 94V-0. The oxygen index is 34%.
Transient input voltage
Single voltage pulse at +25°C ambient temperature.
01234567
8
70
80
90
100
110
120
130
Transient
voltage
Transient duration (s)
1x10-6
1x10-4
1x10-2
1
1x102
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