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參數(shù)資料
| 型號： | PKM4304BPIHSLB |
| 廠商： | ERICSSON POWER MODULES AB |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 380 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, QUARTER BRICK PACKAGE-6 |
| 文件頁數(shù)： | 6/21頁 |
| 文件大小： | 1591K |
| 代理商： | PKM4304BPIHSLB |
Ericsson Internal
PRODUCT SPECIFICATION
2 (6)
Prepared (also subject responsible if other)
No.
ECHWANG
3/1301-BMR 653 Uen
Approved
Checked
Date
Rev
Reference
EXUEFYA
2008-06-30
H
Operating information
Input Voltage
The input voltage range 36 to 75 Vdc meets the requirements
of the European Telecom Standard ETS 300 132-2 for normal
input voltage range in —48 and —60 Vdc systems,
-40.5 to -57.0 V and —50.0 to -72 V respectively.
At input voltages exceeding 75 V, the power loss will be
higher than at normal input voltage and Tref must be limited to
absolute max 115°C. The absolute maximum continuous input
voltage is 80 Vdc.
Turn-off Input Voltage
The DC/DC converters monitor the input
voltage and will turn on and turn off at predetermined levels.
The minimum hysteresis between turn on and turn off input
voltage is 1 V.
Remote Control (RC)
The products are fitted with a
remote control function referenced
to the primary negative input
connection (- In), and positive logic
options available. The RC function
allows the DC/DC converter to be
turned on/off by an external device
like a semiconductor or mechanical
switch. The RC pin has an internal
pull up resistor to + In.
The maximum required sink current is 0.2 mA. When the RC
pin is left open, the voltage generated on the RC pin is
max 10 V. The second option is “positive logic” remote
control, which can be ordered by adding the suffix “P” to the
end of the part number. The DC/DC converter will turn on
when the RC pin is left open. Turn off is achieved by
connecting the RC pin to the - In. To ensure safe turn off the
voltage difference between RC pin and the - In pin shall be
less than 1V. The DC/DC converter will restart automatically
when this connection is opened.
Input and Output Impedance
The impedance of both the input source and the load will
interact with the impedance of the DC/DC converter. It is
important that the input source has low characteristic
impedance. The performance in some applications can be
enhanced by addition of external capacitance as described
under External Decoupling Capacitors. If the input voltage
source contains significant inductance, the addition of a
330 F capacitor across the input of the DC/DC converter will
ensure stable operation.
External Decoupling Capacitors
When powering loads with significant dynamic current
requirements, the voltage regulation at the point of load can
be improved by addition of decoupling capacitors at the load.
The most effective technique is to locate low ESR ceramic
and electrolytic capacitors as close to the load as possible,
using several parallel capacitors to lower the effective ESR.
The ceramic capacitors will handle high-frequency dynamic
load changes while the electrolytic capacitors are used to
handle low frequency dynamic load changes. Ceramic
capacitors will also reduce any high frequency noise at the
load. It is equally important to use low resistance and low
inductance PCB layouts and cabling.For loosely regulated
DC/DC converters, such as PKM-B intermediate bus con-
verters, there is no limit on the value of output capacitance
that may be used. The user should be aware, however, that
large values of capacitance will affect the ramp-up time of the
DC/DC converter output voltage during start-up.
Parallel Operation
The PKM 4000B Series DC/DC converters can be connected
in parallel with a common input. Paralleling is accomplished
by connecting the output voltage pins and input pins directly.
No external components are necessary. Up to 90% of max
output current can be used from each module. Layout
considerations should be made to avoid unbalanced current
sharing. For more details on paralleling, please consult your
local Ericsson Power Modules representative.
Input Voltage 53V
11.2
11.4
11.6
11.8
12.0
0
1020
3040
50
60
Output Current (A)
Ou
tput
V
o
lt
age
(V)
module 1
module 2
module 1 + 2
E
PKM4000B PI
Intermediate Bus Converters, Input 36-75 V, 33A/380W
EN/LZT 146 305 R5A July 2008
Ericsson Power Modules AB
Technical Specification
14
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| PKM4304BPIHSLC | 制造商:Ericsson 功能描述:DC/DC BUS CONVERTER - Bulk |
| PKM4304BPILA | 制造商:ERICSSON 功能描述: |
| PKM4304BPILB | 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 12V 33A 380W - Bulk |
| PKM4304BPILC | 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 12V 33A 380W - Bulk |
| PKM4304BPIOAHSLA/B | 制造商:Ericsson 功能描述: |
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