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参数资料
| 型号： | PKR4117ASI |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 15 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, SMD-18 |
| 文件页数： | 15/30页 |
| 文件大小： | 1444K |
| 代理商： | PKR4117ASI |
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EYINGJI
3/1301-BMR 640 1411+ Uen
Approved
Checked
Date
Rev
Reference
SEC/D (Julia You)
EJANLLI
2009-4-10
F
Operating information continued
Parallel Operation
Paralleling of several converters is easily accomplished by
direct connection of the output voltage terminal pins. The
load regulation characteristic is specifically designed for
optimum paralleling performance. Load sharing between
converters will be within ±10% It is recommended not to
exceed
P
o = n × 0.9 × Pomax , where Pomax is the maximum converter
output power and n the number of paralleled converters, to
prevent overloading any of the converters and thereby
decreasing the reliability performance.
Over Temperature Protection (OTP)
The PKR 4000A Series DC/DC converters include an internal
over temperature shutdown circuit.
When the temperature exceeds 130°C - 150°C on the control
circuit the converter will shut down. The DC/DC converter will
make continuous attempts to start up (non-latching mode)
and resume normal operation automatically when the
temperature has dropped >15°C below the temperature
threshold.
Over Current Protection (OCP)
The converters include current limiting circuitry for protection
at continuous overload.
The output voltage will decrease towards zero for output
currents in excess of max output current (max IO). The
converter will resume normal operation after removal of the
overload. The load distribution should be designed for the
maximum output short circuit current specified.
Synchronization
It is possible to synchronize the switching frequency to an
external symmetrical clock signal. The input can be driven by
a TTL-compatible output and reference to the -input pin 17.
Characteristic
Min
Typ
Max
Unit
High level
2.2
6.5
V
Threshold level*)
1.2
1.7
2.2
V
Low level
0
0.4
V
Sink current
1.5
mA
Sync. Frequency
520
668
kHz
*) Rise time < 10ns
Thermal Consideration
General
The converters are designed to operate in different thermal
environments and sufficient cooling must be provided to
ensure reliable operation.
Cooling is achieved mainly by conduction, from the pins to
the PCB board, and convection, which is dependant on the
airflow across the converter. Increased airflow enhances the
cooling of the converter.
The Output Current Derating graph found in the Output
section for each model provides the available output current
vs. ambient air temperature and air velocity at Vin = 53 V.
The converter is tested on a 254 x 254 mm,
35 μm (1 oz), 8-layer test board mounted vertically in a wind
tunnel with a cross-section of 305 x 305 mm.
Proper cooling of the converter can be verified by measuring
the temperature at position P1. The temperature at these
positions should not exceed the max values provided in the
table below.
Note that the max value is the absolute maximum rating
(non destruction) and that the electrical Output data is
guaranteed up to Tref +95°C.
See Design Note 019 for further information.
Position
Device
Designation
max value
P1
Transformer
Tref
110 C
P2
Mosfet
P3
PCB
P
1
Air Flow
E
PKR 4000A PI
DC/DC Converters, Input 36-75 V, 3 A / 15 W
EN/LZT 146 300 R5F April 2009
Ericsson AB
Technical Specication
22
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PKR4117ASIA | 制造商:Ericsson 功能描述: |
| PKR4128BPIA | 制造商:Ericsson 功能描述: |
| PKR4128BPIC | 制造商:Ericsson 功能描述: |
| PKR4128BSI | 功能描述:DC/DC转换器 3.3 5Vdc Isolated Input 36-75V 13W 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: |
| PKR4128BSIA | 制造商:Ericsson 功能描述: |
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