Document 528-1
For Flyback, SEPIC, Zeta
and other Applications
Coupled Inductors MSD1260
• Tight coupling (k ≥ 0.98)
• 500 V isolation
• Idealforuseinavarietyofcircuitsincludingflyback,multi-output
buck, SEPIC and Zeta.
• Highinductance, highefficiencyandexcellentcurrenthandling
• Can also be used as two single inductors connected in series
or parallel, as a common mode choke or as a 1:1 transformer.
+
+
D
C
V
L1
L2
OUT
C
V
IN
–
SW
–
Typical Flyback Converter
+
OUT
D
V
C
AUX
L2
–
0.484
12,3
+
+
max
L1
V
OUT
V
C
D
IN
SW
Dot indicates pin1
Dash number
Parts manufactured
prior to Sept. 2007
were marked with
–
–
1 2 3
0.484
12,3
max
Typical Buck Converter with auxiliary output
only the dash number.
X
Internal code
D
+
+
L1
C1
V
C
Q
L2
C
OUT
V
0.236 0.008*
6,0 0,2
IN
Recommended
Land Pattern
–
+
–
Typical SEPIC schematic
0.217
5,5
0.197
5,0
0.157
4,0
0.138
3,5
+
2
3
1
4
3
4
1
L2
C1
0.197
5,0
0.177
4,5
Q
V
D
C
C
OUT
V
L1
2
IN
–
–
0.059
1,5
0.079
2,0
Typical Zeta schematic
For optional tin-lead and tin-silver-copper
terminations, dimensions are for the mounted
part. Dimensions before mounting can be
an additional 0.012 inch (0,3 mm).
*
1
2
L1
L2
inches
mm
Dimensions are in
4
3
Document 528-1 Revised 01/13/12
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© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.