參數(shù)資料
型號(hào): PKL4311PIPTLB
廠商: ERICSSON POWER MODULES AB
元件分類: 電源模塊
英文描述: 1-OUTPUT 300 W DC-DC REG PWR SUPPLY MODULE
封裝: ROHS COMPLIANT PACKAGE-11
文件頁數(shù): 29/38頁
文件大?。?/td> 803K
代理商: PKL4311PIPTLB
Ericsson Internal
PRODUCT SPECIFICATION
4 (5)
Prepared (also subject responsible if other)
No.
EQUENXU
3/1301-BMR 632 Uen
Approved
Checked
Date
Rev
Reference
SEC/D (Julia You)
EZYPING
2007-01-11
B
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 89.5 % = 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 PKL4118B PIT at 2m/s:
1. ((
) -
1) × 144 W = 25.0 W
2. 25.0 W × 1.3°C/W = 32.5°C
3. 110 °C — 32.5°C = max ambient temperature is 77.5°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
Case
Connected to baseplate
4
-In
Negative Input
5,10
-Out
Negative Output
6
-Sen
Negative Sense
7
Vadj
Output voltage adjust
8
+Sen
Positive Sense
9,11
+Out
Positive Output
1
0.852
E
PKL 4000 PI series
DC/DC converters, Input 36-75 V, Output 80 A/300 W
EN/LZT 146 311 R2D April 2007
Ericsson Power Modules AB
Technical Specication
35
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