Document 889-1
Shielded Coupled Inductors MSD1583
Excellent coupling coefficient (k 0.98) and 500 Vrms
isolation makes the MSD1583 series of coupled inductors
ideal for use in a variety of circuits including flyback, multi-
output buck, SEPIC and Zeta. These parts provide high
inductance, high efficiency and excellent current handling.
In SEPIC topologies, the required inductance for each
winding is half the value needed for two separate induc-
tors, allowing selection of a part with lower DCR and higher
current handling.
+ +
D
C
V
L1 L2
OUT
C
V
IN
SW
Typical Flyback Converter
+
D V
OUT
C AUX
L2
0.590 0.020
15,0 0,5
++
Dot indicates pin1
L1
123E
V
V C OUT
0.590 0.020 D
IN
Dash number
SW
15,0 0,5
X
Internal code
Typical Buck Converter with auxiliary output
D
0.339 ++
max
8,60
L1 C1
V
C Q L2 C OUT
V
IN
0.220
5,6
Typical SEPIC schematic
1 2
3 4
0.331
0.126
L1
L2
8,4
3,2
2 1
++
3 4
L2
C1
Q
V
0.075 D
V CC OUT
L1
IN
1,9
0.165
0.146
4,2
3,7
Typical Zeta schematic
2 1
0.311
Recommended
If board traces
7,9
Land Pattern
are runin these
3 4
areas, consider
masking them to
prevent shorting.
0.091
2,3
inches
Dimensions are in
mm
Document 889-1 Revised 1/5/16
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com Coilcraft Inc. 2017
This product may not be used in medical or high
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
risk applications without prior Coilcraft approval.
China +86-21-6218 8074 sales@coilcraft.com.cn
Specification subject to change without notice.
Singapore + 65-6484 8412 sales@coilcraft.com.sg Please check web site for latest information.Document 889-2
MSD1583 Shielded Coupled Inductors for SEPIC applications
5
Isat (A) Irms (A)
SRF Coupling Leakage
3
2 DCR (Ohms) 4
Inductance typ coefficient inductance 10% 20% 30% both one
1 6 7
Part number (H) typ max (MHz) typ typ (H) drop drop drop windings winding
MSD1583-103ME_ 10 20% 0.026 0.031 16.0 0.98 0.33 11.7 13.3 14.5 3.68 5.20
MSD1583-123ME_ 12 20% 0.029 0.037 14.5 0.98 0.36 10.6 12.1 13.2 3.54 5.00
MSD1583-153ME_ 15 20% 0.039 0.045 12.0 0.99 0.38 9.50 10.8 11.8 3.18 4.50
MSD1583-183ME_ 18 20% 0.042 0.048 11.5 0.99 0.40 8.70 9.90 10.8 3.04 4.30
MSD1583-223ME_ 22 20% 0.054 0.065 10.5 0.99 0.40 7.90 8.95 9.80 2.44 3.45
MSD1583-333ME_ 33 20% 0.083 0.095 8.0 0.99 0.54 6.40 7.30 8.00 2.16 3.05
MSD1583-473ME_ 47 20% 0.100 0.115 7.1 0.99 0.46 5.40 6.10 6.70 1.98 2.80
MSD1583-683ME_ 68 20% 0.145 0.165 5.7 0.99 0.79 4.50 5.10 5.50 1.56 2.20
MSD1583-104KE_ 100 10% 0.230 0.260 5.1 >0.99 0.59 3.70 4.20 4.60 1.24 1.75
MSD1583-154KE_ 150 10% 0.340 0.380 3.7 >0.99 0.70 3.00 3.42 3.75 1.06 1.50
MSD1583-224KE_ 220 10% 0.420 0.460 3.2 >0.99 0.89 2.50 2.83 3.10 0.92 1.30
MSD1583-474KE_ 470 10% 0.950 1.04 2.2 >0.99 1.16 1.70 1.93 2.12 0.65 0.92
MSD1583-105KE_ 1000 10% 2.20 2.40 1.6 >0.99 2.02 1.17 1.32 1.45 0.42 0.60
1. When ordering, please specify termination and packaging codes: 5. DC current at which the inductance drops the specified amount from its
value without current. It is the sum of the current flowing in both windings.
MSD1583-105KED
6. Equal current when applied to each winding simultaneously that
causes a 40C temperature rise from 25C ambient. This information is
Termination: E = RoHS compliant matte tin over nickel over phos bronze.
for reference only and does not represent absolute maximum ratings.
Special order: Q = RoHS tin-silver-copper (95.5/4/0.5)
To predict temperature rise go to online calculator.
or P = non-RoHS tin-lead (63/37).
7. Maximum current when applied to one winding that causes a 40C
Packaging: D = 13 machine-ready reel. EIA-481 embossed plastic
temperature rise from 25C ambient. This information is for reference
tape (300 parts per full reel).
only and does not represent absolute maximum ratings. o predict
B = Less than full reel. In tape, but not machine ready.
temperature rise go to online calculator.
To have a leader and trailer added ($25 charge),
8. Electrical specifications at 25C.
use code letter D instead.
Refer to Doc 639 Selecting Coupled Inductors for SEPIC Applications.
2. Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms,
Refer to Doc 362 Soldering Surface Mount Components before soldering.
0 Adc on an Agilent/HP 4284A LCR meter or equivalent. When leads
are connected in parallel, inductance is the same value. When leads
are connected in series, inductance is four times the value.
3. DCR is for each winding. When leads are connected in parallel, DCR is Coupled Inductor Core and Winding Loss Calculator
half the value. When leads are connected in series, DCR is twice the value.
This web-based utility allows you to enter frequency, peak-to-peak
4. SRF measured using an Agilent/HP 4191A or equivalent. When leads
(ripple) current, and Irms current to predict temperature rise and overall
are connected in parallel, SRF is the same value.
losses, including core loss. Go to online calculator.
Typical L vs Current Typical L vs Frequency
10000 10000
1000 H
470 H
220 H
1000 1000 H 1000
150 H
470 H
100 H
220 H
47 H
150 H
100 100 22 H
100 H
15 H
47 H
10 H
22 H
15 H
10 10
10 H
1 1
0.1 1 10 100 0.1 1 10 100
Current (A) Frequency (MHz)
Document 889-2 Revised 1/5/16
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com Coilcraft Inc. 2017
This product may not be used in medical or high
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
risk applications without prior Coilcraft approval.
China +86-21-6218 8074 sales@coilcraft.com.cn
Specification subject to change without notice.
Singapore + 65-6484 8412 sales@coilcraft.com.sg Please check web site for latest information.
Inductance (H)
Inductance (H)