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MSD1278-822ML PDF预览

MSD1278-822ML

更新时间: 2024-11-07 05:50:23
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线艺 - COILCRAFT /
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描述
Coupled Inductors for SEPIC

MSD1278-822ML 数据手册

 浏览型号MSD1278-822ML的Datasheet PDF文件第2页浏览型号MSD1278-822ML的Datasheet PDF文件第3页 
Document 499-1  
For SEPIC and other  
Applications  
Coupled InductorsMSD1278  
The excellent coupling coefficient (k 0.94) makes the  
MSD1278 series of coupled inductors ideal for use in  
SEPIC applications. In SEPIC topologies, the required  
inductance for each winding in a coupled inductor is  
half the value needed for two separate inductors, allow-  
ing selection of a part with lower DCR and higher  
current handling.  
These inductors provide high inductance, high effi-  
ciency and excellent current handling in a rugged, low  
cost part. They are well suited for use as a VRM  
inductors in high-current DC-DC converters and VRM/  
VRD controllers.  
They can also be used as two single inductors con-  
nected in series or parallel, as a common mode choke  
or as a 1 : 1 transformer.  
0.484  
max  
D1  
12,3  
+
+
L1  
Q1  
C1  
Dot indicates pin1  
+
Parts manufactured  
prior to Sept. 2007  
were marked with  
1 2 3  
V
V
OUT  
L2  
C2  
Load  
IN  
0.484  
12,3  
Dash number  
Internal code  
max  
X
only the dash number.  
Typical SEPIC schematic  
Refer to Application Note, Document 639,  
“Selecting Coupled Inductors for SEPIC Applications”  
0.317  
8,05  
max  
Recommended  
Land Pattern  
Designer’s Kit C400 contains 3 each of all values.  
Core material Ferrite  
0.217  
5,5  
0.197  
5,0  
Terminations RoHS compliant matte tin over nickel over phos  
bronze. Other terminations available at additional cost.  
0.157  
4,0  
0.138  
3,5  
2
3
1
4
Weight: 3.7 – 4.4 g  
3
4
1
0.197  
5,0  
0.177  
4,5  
Ambient temperature –40°C to +85°C with Irms current, +85°C to  
+125°C with derated current  
2
Storage temperature Component: –40°C to +125°C.  
Packaging: –40°C to +80°C  
0.059  
1,5  
0.079  
2,0  
Winding to winding isolation 500 Vrms  
Resistance to soldering heat Max three 40 second reflows at  
+260°C, parts cooled to room temperature between cycles  
inches  
mm  
Dimensions are in  
1
2
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /  
85% relative humidity)  
L1  
L2  
Failures in Time (FIT) / Mean Time Between Failures (MTBF)  
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332  
4
3
Packaging 500/13reel; Plastic tape: 24 mm wide, 0.4 mm thick,  
16 mm pocket spacing, 8.1 mm pocket depth  
PCB washing Only pure water or alcohol recommended  
Specifications subject to change without notice.  
Please check our website for latest information.  
Document499-1 Revised10/08/08  
© Coilcraft, Inc. 2010  

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