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参数资料
| 型号： | PME5218TS |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 21.6 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, SMD-6 |
| 文件页数： | 18/32页 |
| 文件大小： | 742K |
| 代理商： | PME5218TS |
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Ericsson Internal
PRODUCT SPEC.
3 (5)
Prepared (also subject responsible if other)
No.
SEC/D KEVIN YAN
3/1301-BMR 642 5 Uen
Approved
Checked
Date
Rev
Reference
SEC/D Wei Zhang A
2007-1-26
B
Auto-Track Function
Auto-Track was designed to simplify the amount of circuitry
required to make the output vltage from each module power
up and power down in sequence. The sequencing of two or
more supply voltages during power up is a common
requirement for complex mixed-signal applications, that use
dual-voltage VLSI ICs such as DSPs, micro-processors and
ASICs.
Pre-Bias Startup Capability
This often occurs in complex digital systems when current
from another power source is backfed through a dual-supply
logic component, such as FPGA or ASIC.
The PME(3.3/5.0V Vin) incorporate synchronous rectifiers, but
will not sink current during startup, or whenever the Inhibit pin
is held low. However, to ensure satisfactory operation of this
function, certain conditions must be maintained.
Thermal Consideration
General
The regulators 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 regulator. Increased airflow enhances the
cooling of the regulator.
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 = 5.0 V.
The DC/DC regulator 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 DC/DC regulator 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 +85°C.
See Design Note 019 for further information.
Position
Device
Designation
max value
P1
Pcb
130 C
P2
Mosfet
Tref
130 C
P3
Inductor
130 C
E
PME 5000 series
POL regulator, Input 4.5-5.5 V, Output 6 A/21.6 W
EN/LZT 146 314 R1B Aug 2007
Ericsson Power Modules AB
Technical Specication
25
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| PME8118TS | 功能描述:DC/DC转换器 .8-1.8 Vdc 6A Iso Input 5V 10.8W 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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