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參數(shù)資料
| 型號： | PKM4304BPIHS |
| 廠商： | ERICSSON POWER MODULES AB |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 298.75 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT PACKAGE-6 |
| 文件頁數(shù)： | 6/21頁 |
| 文件大?。?/td> | 1790K |
| 代理商： | PKM4304BPIHS |
Ericsson Internal
PRODUCT SPECIFICATION
2 (6)
Prepared (also subject responsible if other)
No.
EXUEFYA
3/1301-BMR 653 Uen
Approved
Checked
Date
Rev
Reference
EQUENXU
2009-11-30
J
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 PWB
layouts and cabling.
For semi-regulated or fixed turns ratio IBC (intermediate bus
converters), there is no limit on the value of external output
capacitance, but there are practical performance
considerations that need to be made when using very large
capacitor values such as ramp-up time of the DC/DC converter
output voltage during start-up or turn-off discharge
considerations. If there are any questions associated with a
specific application configuration, please contact your local
Ericsson representative for support.
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
PKM 4000B PI series
Intermediate Bus Converters
Input 36-75 V, Output up to 33 A / 380 W
EN/LZT 146 305 R5C March 2010
Ericsson AB
Technical Specication
14
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| PKM4304BPIHSG | 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 12V 33A 380W - Trays |
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| PKM4304BPILA | 制造商:ERICSSON 功能描述: |
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