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参数资料
| 型号： | PKJ4216NPIT |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 250 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT |
| 文件页数： | 4/15页 |
| 文件大小： | 392K |
| 代理商： | PKJ4216NPIT |
12
EN/LZT 146 094 R1B Ericsson Power Modules, May 2005
PKJ 4216N PIT Datasheet
Operating Information
Over Temperature Protection (OTP)
The PKJ 4216N PIT DC/DC converters are protected from
thermal overload by an internal over temperature shutdown
circuit. When the baseplate temperature (center of base-
plate ) exceeds 125 C the converter will shut down
immediately (latching). The converter can be restarted
by cycling the input voltage or using the remote control
function.
Input And Output Impedance
The impedance of both the power source and the load will
interact with the impedance of the DC/DC converter. It is
most important to have a low characteristic impedance, both
at the input and output, as the converters have a low energy
storage capability. The PKJ 4216N PIT DC/DC converters
have been designed to be completely stable without the
need for external capacitors on the input or the output
circuits. The performance in some applications can be
enhanced by addition of external capacitance as described
under maximum capacitive load. If the distribution of the
input voltage source to the converter contains signicant
inductance, the addition of a
100 F capacitor across the input of the converter will help
insure stability. This capacitor is not required when powering
the DC/DC converter from a low impedance source with
short, low inductance, input power leads.
Parallel Operation
The PKJ 4216N PIT DC/DC converters can be paralleled
safely without any external components, however good
matching between the initial voltage setting and the layout
impedence/resistance can change the performance. Please
consult with your Ericsson representative should parallelling
the PKJ 4216N PIT for increased power be desired.
Maximum Capacitive Load
When powering loads with signicant dynamic current
requirements, the voltage regulation at the load can be
improved by addition of decoupling capacitance at the
load. The most affective technique is to locate low ESR
ceramic capacitors as close to the load as possible, using
several capacitors to lower the effective ESR. These
ceramic capacitors will handle short duration high-frequency
components of dynamic load changes. In addition, higher
values of electrolytic capacitors should be used to handle
the mid-frequency components. It is equally important
to use good design practise when conguring the DC
distribution system. Low resistance and low inductance
PCB layouts and cabling should be used. Remember that
when using remote sensing, all resistance, inductance and
capacitance of the distribution system is within the feedback
loop of the converter. This can affect on the converters
compensation and the resulting stability and dynamic
response performance. As a “rule of thumb”, 100F/A of
output current can be used without any additional analysis.
For example with a 25A converter, values of decoupling
capacitance up to 2500 F can be used without regard to
stability. With larger values of capacitance, the load transient
recovery time can exceed the specied value. As much of
the capacitance as possible should be outside the remote
sensing loop and close to the load. The absolute maximum
value of output capacitance is 10 000 F. For values larger
than this, please contact your local Ericsson Power Modules
representative.
Current Limit Protection
The PKJ 4216N PIT DC/DC converters include current
limiting circuitry that allows them to withstand continuous
overloads or short circuit conditions on the output. The out-
put voltage will decrease towards zero for output currents in
excess of max output current (Iomax).
The converter will resume normal operation after removal
of the overload. The load distribution system should be
designed to carry the maximum output short circuit current
specied.
Over Voltage Protection (OVP)
The PKJ 4216N PIT DC/DC converters have latching output
overvoltage protection. In the event of an overvoltage condi-
tion, the converter will shut down immediately. The converter
can be restarted by cycling the input voltage or using the
remote control function.
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| PKJ4216PI | 功能描述:DC/DC转换器 234W 28.2V 8.3A 36-75Vin RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PKJ4216PIM | 制造商:Ericsson 功能描述: |
| PKJ4316API | 功能描述:DC/DC转换器 28Vdc 12.4A Isolated Input 36 -75V 350W RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PKJ4316APIM | 制造商:Ericsson 功能描述:DC-DC CONVERTER - Bulk |
| PKJ4316PI | 功能描述:DC/DC转换器 28 Vdc 11A Iso Input 36-75V 310W RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
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