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Coupled Power Inductors for SEPIC – MSD1260 Series - Coilcraft


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Document 528-1
Coupled Inductors -MSD1260 Series
For SEPIC Applications
käs
The excellent coupling coefficient (k > 0.98) makes the MSD1260 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, allowing selection of a part with lower DCR and higher current handling.
These parts provide high inductance, high efficiency and excellent current handling in a rugged, low cost part. They are also 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 con­nected in series or parallel, or as a 1 : 1 transformer. See page 4 for details.
I 0.484 I
p-12jmax-^
D1
+ —T^ooo^T-\\-1 ! M t-1— +
0.484 l23max
1
t
0.24 ±0.01 6,0 ±0,2
■ Dot indicates pini
■ Dash number
Internal code
Parts manufactured prior to Sept. 2007 were marked with only the dash number.
Loam V0UT
--1-1-i-1-;--
Typical SEPIC schematic
Refer to Application Note, Document 639, "Selecting Coupled Inductors for SEPIC Applications"
Recommended Land Pattern
5,5 ]*■
0.157 ■ ■ 4,0 _j_
~T~ 2 1 0.177
3 4 4,5 ■ ■ '
Core material Ferrite
Terminations RoHS compliant matte tin over nickel over phos bronze. Other terminations available at additional cost.
Weight: 2.8 - 3.2 g
Ambient temperature -40°C to +85°C with I rms current, +85°C to +125°C with derated current
Storage temperature Component: -40°C to +125°C. Packaging: -40°C to +80°C
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
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C / 85% relative humidity)
Mean Time Between Failures (MTBF) 26,315,789 hours
Packaging 500/13" reel; Plastic tape: 24 mm wide, 0.35 mm thick, 16 mm pocket spacing, 6.6 mm pocket depth
PCB washing Only pure water or alcohol recommended
0.197
5,0
±
0.138
3,5
4
i c
0.197
5,0
inches
2
l2
4
Dimensions are in
mm
3
Specifications subject to change without notice.
Please check our website for latest information. Document 528-1 Revised 10/08/08
1102 Silver Lake Road Cary, Illinois 60013 Phone 847/639-6400 Fax 847/639-1469 © Coilcraft, Inc. 2008 E-mail info@coilcraft.com Web http://www.coilcraft.com

pageCatalog pdf di En 2012-05-21-27