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参数资料
| 型号： | PMN5118USR |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 108 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, SMD-14 |
| 文件页数： | 24/37页 |
| 文件大小： | 1906K |
| 代理商： | PMN5118USR |
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Ericsson Internal
PRODUCT SPECIFICATION
5 (8)
Prepared (also subject responsible if other)
No.
EYIPYAN
3/1301-BMR656 5118 Uen
Approved
Checked
Date
Rev
Reference
SEC/D (Julia You)
EQUENXU
2007-7-9
B
RTT Resistor Selection
The Turbo TransTM resistor value, RTT can be determined from
the Turbo TransTM programming equation, see the equation
below.
)
(
1
)
2350
(
5
)
2350
(
1
40
×
×
=
k
C
R
o
TT
Where Co is the total output capacitance in F. Co values
greater than or equal to 2350 F require RTT to be a short,
0. (The above equation results in a negative value for RTT when Co
≥ 2350 F)
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 V.
The DC/DC regulator 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 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 ambient temperature +85°C.
See Design Note 019 for further information.
Position
Device
Designation
max value
P
1
Pcb
130 C
P
2
Mosfet
130 C
P
3
Inductor
Tref
130 C
E
PMN 5000 series
POL regulator, Input 4.5-5.5 V, Output up to 30 A/108 W
EN/LZT 146 386 R1A
July 2007
Ericsson Power Modules AB
Technical Specification
30
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