參數(shù)資料
型號(hào)： PKB4810PINBLB
廠商： ERICSSON POWER MODULES AB
元件分類： 電源模塊
英文描述： 1-OUTPUT 82.5 W DC-DC REG PWR SUPPLY MODULE
封裝： ROHS COMPLIANT, PACKAGE-8
文件頁數(shù)： 32/43頁
文件大小： 1656K
代理商： PKB4810PINBLB
Ericsson Internal
PRODUCT SPECIFICATION
4 (5)
Prepared (also subject responsible if other)
No.
EJUNGYA
3/1301-BMR 636 Uen
Approved
Checked
Date
Rev
Reference
SEC/D (Julia You)
ESHUHAN
2008-1-11
A
Thermal Consideration continued
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 89.0 % = 0.89
2. Find the thermal resistance (Rth) in the Thermal Resistance
graph found in the Output section for each model.
Calculate the temperature increase (T).
T = Rth x Pd
3. Max allowed ambient temperature is:
Max Tref - T.
E.g PKB 4711 SINB at 1m/s:
1. ((
) -
1) × 75 W = 9.26 W
2. 9.26 W × 6.3°C/W = 58.3°C
3. 120 °C — 58.3°C = max ambient temperature is 61.6°C
The actual temperature will be dependent on several factors
such as the PCB size, number of layers and direction of
airflow.
Connections
Pin
Designation
Function
1
+In
Positive input
2
RC
Remote control
3
-In
Negative input
4
-Out
Negative output
5
-Sen
Negative remote sense
6
Vadj
Output voltage adjust
7
+Sen
Positive remote sense
8
+Out
Positive output
1
0.89
E
PKB 4000 series
DC/DC converters, Input 36-75 V, Output 30 A/90 W
EN/LZT 146 394 R4A Sep 2008
Ericsson Power Modules AB
Technical Specication
38
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PKB4810PINBMLA 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 3.3V 25A 82.5W - Bulk
PKB4810SINB 功能描述:DC/DC轉(zhuǎn)換器 82.5W 3.3V 25A 36-75Vin SMT 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）: 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:
PKB4910API 制造商:Ericsson 功能描述:- Trays 制造商:Ericsson 功能描述:3.3VDC 30A Isolated Input 36-72V 99W
PKB4910ASI 制造商:Ericsson 功能描述:
PKB4913 PINB 制造商:Ericsson 功能描述:
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