參數(shù)資料
型號(hào)： PKA2000
廠商： ERICSSON
英文描述： 25-40 W DC/DC Power Modules 24 V Input Series
中文描述： 25-40中西區(qū)區(qū)議會(huì)/ DC電源模塊24 V輸入系列
文件頁(yè)數(shù)： 16/20頁(yè)
文件大?。?/td> 864K
代理商： PKA2000
EN/LZT 146 09 R1A Ericsson Microelectronics AB, June 2000
16
Input and Output Impedance
Both the source impedance of the power feeding and the load imped-
ance will interact with the impedance of the DC/DC power module.
It is most important to have the ratio between L and C as low as
possible, i.e. a low characteristic impedance, both at the input and
output, as the power modules have a low energy storage capability.
Use an electrolytic capacitor across the input or output if the source
or load inductance is larger than 10 H. Their equivalent series resist-
ance together with the capacitance acts as a lossless damping filter.
Suitable capacitor values are in the range 10–100 F.
Mounting information for PKZ 0001
The two holes on the ground pin are ovals for positioning of the pin
according to the PCB layout. The screws are delivered together with
the pin.
Warranty
Ericsson Microelectronics warrants to the original purchaser or end user
that the products conform to this Data Sheet and are free from
material and workmanship defects for a period of five (5) years from the
date of manufacture, if the product is used within specified conditions
and not opened. In case the product is discontinued, claims will be
accepted up to three (3) years from the date of the discontinuation.
For additional details on this limited warranty we refer to Ericsson
Microelectronics AB’s “General Terms and Conditions of Sales”, or
individual contract documents.
Limitation of Liability
Ericsson Microelectronics does not make any other warranties, ex-
pressed or implied including any warranty of merchantability or
fitness for a particular purpose (including, but not limited to, use in
life support applications, where malfunctions of product can cause
injury to a person’s health or life).
Reliability
Meantime between failure (MTBF) is calculated to >2.0 million hours
at full output power and a case temperature of +75°C (T
A
=+45°C),
using the Ericsson failure rate data system. The Ericsson failure rate
data system is based on field failure rates and is continuously updated.
The data corresponds to actual failure rates of component used in Infor-
mation Technology and Telecom equipment in temperature controlled
environments (T
A
=–5…+65°C). The data is considered to have a
confidence level of 90%. For more information see Design Note 002.
Quality Statement
The products are designed and manufactured in an industrial environ-
ment where quality systems and methods like ISO 9000, 6s and SPC,
are intensively in use to boost the continuous improvements strategy.
Infant mortality or early failures in the products are screened out by a
burn-in procedure and an ATE-based final test.
Conservative design rules, design reviews and product qualifications,
plus the high competence of an engaged work force, contribute to the
high quality of our products.
Quality
Mounting surface must be flat within 0.2 mm. All specifications are
valid if the mounting surface has R
th
<7°C/W.
Accessories
Mounting information for PKZ 0004
PKZ 0001
PKZ 0004
PI version of ground pin for case, in packages of
10 pcs incl. mounting screws.
Mounting bracket for Off-Card mounting in packages
of 2 pcs.
Information given in this data sheet is believed to be accurate and reliable. No respon-
sibility is assumed for the consequences of its use nor for any infringement
of patents or other rights of third parties which may result from its use.
No license is granted by implication or otherwise under any patent or patent rights of
Ericsson Microelectronics. These products are sold only according to Ericsson
Microelectronics
’
general conditions of sale, unless otherwise confirmed in writing.
Specifications subject to change without notice.
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