參數(shù)資料
型號(hào)： PKB4113CPILIT
廠(chǎng)商： ERICSSON POWER MODULES AB
元件分類(lèi)： 電源模塊
英文描述： 1-OUTPUT 144 W DC-DC REG PWR SUPPLY MODULE
封裝： ROHS COMPLIANT, EIGHTH BRICK PACKAGE-8
文件頁(yè)數(shù)： 26/39頁(yè)
文件大?。?/td> 1773K
代理商： PKB4113CPILIT
Ericsson Internal
PRODUCT SPECIFICATION
4 (6)
Prepared (also subject responsible if other)
No.
MICJMAL
3/1301-BMR 655 Uen
Approved
Checked
Date
Rev
Reference
MPM/BK/P (Natalie Johansson)
(EANDKUL)
2007-11-07
B
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 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 converter can be verified by
measuring the temperature at positions P1 or P2 ( see note 1).
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
Mosfet
Tref
125 C
P2
Ind. core
Tref
125 C
P2
P1
Thermal Consideration continued
The PKB4000C series DC/DC converters can be ordered with
a heatsink (HS) option. The HS option is intended to be
mounted on a cold wall or heatsink to transfer heat away from
the converter and further improve the cooling of the converter.
Definition of reference temperature (Tref)
The reference temperature is used to monitor the temperature
limits of the product. Temperatures above maximum Tref are
not allowed and may cause degradation or permanent
damage to the product. Tref is also used to define the
temperature range for normal operating conditions.
Tref is defined by the design and used to guarantee safety
margins, proper operation and high reliability of the module.
Ambient Temperature Calculation
By using the thermal resistance the maximum allowed
ambient temperature can be calculated.
1. The power loss is calculated by using the formula
((1/η) - 1) × output power = power losses (Pd).
η = efficiency of converter. E.g. 89.5 % = 0.895
2. Find the thermal resistance (Rth) in the Thermal Resistance
graph found in the Output section for each model.
Calculate the temperature increase (ΔT).
ΔT = Rth x Pd
3. Max allowed ambient temperature is:
Max Tref - ΔT.
E.g. PKB 4110C PI at 1m/s:
1. ((
) -
1) × 132 W = 14.7 W
2. 14.7 W × 4.6°C/W = 68°C
3. 125 °C — 68°C = max ambient temperature is 57°C
The actual temperature will be dependent on several factors
such as the PCB size, number of layers and direction of
airflow.
Note 1
P2 is the limiting component (Tref) used for thermal derating for
PKB4113C. P1 is used for the rest of the modules in the PKB-C
family.
1
0.90
E
PKB4000C PI
DC/DC converters, Input 36-75 V, Output 60A/144W
EN/LZT 146 377 R3G
Oct 2008
Ericsson Power Modules AB
Technical Specification
32
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PKB4113CPILTHSLA 制造商:Ericsson 功能描述:1/8-BRICK, 36-75VIN, 12VOUT, 12.5AMPS - Trays
PKB4118GCPI 功能描述:DC/DC轉(zhuǎn)換器 1.8Vdc 60A Isolated Input 36-75V 108W RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱(chēng)）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PKB4118HCPI 功能描述:DC/DC轉(zhuǎn)換器 1.5Vdc 50A Isolated Input 36-75V 75W RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱(chēng)）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PKB4201BPI 功能描述:DC/DC轉(zhuǎn)換器 200W 36-75Vin, 40A RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱(chēng)）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PKB4204BPI 功能描述:DC/DC轉(zhuǎn)換器 240W 36-75Vin/12Vout 1/8-BRICK RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱(chēng)）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
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