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参数资料
| 型号： | PKD4218LASI |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 24.2 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, SMD-24 |
| 文件页数： | 5/18页 |
| 文件大小： | 570K |
| 代理商： | PKD4218LASI |
Ericsson Internal
PRODUCT SPECIFICATION
3 (5)
Prepared (also subject responsible if other)
No.
HF/MPM/BY/P Anders Wgmark
3/1301-BMR 622 4510/81 Uen
Approved
Checked
Date
Rev
Reference
MPM/BY (Johan kerblad)
(MICMALE)
2006-04-11
A
Operating information continued
Parallel Operation
Two converters may be paralleled for redundancy if the total
power is equal or less than PO max. It is not recommended to
parallel the converters without using external current sharing
circuits.
{See Design Note 006 for detailed information.}
Remote Sense
The DC/DC converters have remote sense that can be used
to compensate for voltage drops between the output and the
point of load. The sense traces should be located close to the
PCB ground layer to reduce noise susceptibility. The remote
sense circuitry will compensate for up to 10% voltage drop
between output pins and the point of load.
If the remote sense is not needed +Sense should be
connected to +Out and -Sense should be connected to -Out.
Over Temperature Protection (OTP)
The converters are protected from thermal overload by an
internal over temperature shutdown circuit.
When Tref as defined in thermal consideration section
exceeds 160°C 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 >30°C below the
temperature threshold.
Over Voltage Protection (OVP)
In the event of an overvoltage condition due to malfunction in
the voltage monotoring circuits, the converter’s PWM
controller will automatically dictate minimum duty-cycle thus
reducing the output voltage to a minimum.
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.
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 host 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 DC/DC converter is tested on a 254 x 254 mm,
35 m (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 DC/DC converter can be verified by
measuring the temperature at positions P1, P2 and P3. 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 +90°C.
See Design Note 019 for further information.
Position
Device
Designation
max value
P1
Case (topside) Tref
110 C
P2
Transformer
Tcore
125 C
P3
Mosfet
Tsurface
125 C
E
PKD 4000 ASI series
DC/DC converters, Input 36-75 V, Output 20 A/50 W
EN/LZT 146 346 R1A April 2006
Ericsson Power Modules AB
Technical Specication
13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PKD4218LESI | 功能描述:DC/DC转换器 1.2 Vdc 20A Iso Input 36-75V 24W 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: |
| PKD4218SI | 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 1.8V 14A 25.2W - Bulk |
| PKD4218SIOA | 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 1.5V 14A 21W - Bulk |
| PKD4311SI | 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 5V 6A 30W - Bulk |
| PKD4319SI | 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 2.5V 12A 30W - Bulk |
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