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參數(shù)資料
| 型號(hào)： | PKF4918BI |
| 廠商： | ERICSSON POWER MODULES AB |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 9 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | SMT-18 |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大小： | 708K |
| 代理商： | PKF4918BI |
3
EN/LZT 146 63 R1A Ericsson Microelectronics AB, March 2001
Fundamental circuit diagram
Single output
Electrical Data
Safety
The PKF 4918 BI 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 applica-
ble 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 require-
ments 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 re-
quirements 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 re-
quirement for SELV. One pole of the input and one pole of the output
is to be grounded or both are to be kept floating.
The terminal pins are only intended for connection to mating connec-
tors 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 verified 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 flammability
rating meets UL 94V-0. The oxygen index is 34%.
Transient input voltage
Single voltage pulse at +25°C ambient temperature.
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