MSD7342-184ML COILCRAFT [Coilcraft lnc.], MSD7342-184ML Datasheet - Page 2

• Manufacturer Part Number: MSD7342-184ML
• Description: Coupled Inductors for SEPIC Applications
• Manufacturer: COILCRAFT [Coilcraft lnc.]

Coupled Inductors for SEPIC Applications – MSD7342 Series
MSD7342-252ML_
MSD7342-332ML_
MSD7342-472ML_
MSD7342-562ML_
MSD7342-682ML_
MSD7342-822ML_
MSD7342-103ML_
MSD7342-123ML_
MSD7342-153ML_
MSD7342-183ML_
MSD7342-223ML_
MSD7342-273ML_
MSD7342-333ML_
MSD7342-393ML_
MSD7342-473ML_
MSD7342-563ML_
MSD7342-683ML_
MSD7342-823ML_
MSD7342-104ML_
MSD7342-124ML_
MSD7342-154ML_
MSD7342-184ML_
MSD7342-224ML_
MSD7342-274ML_
MSD7342-334ML_
MSD7342-394ML_
MSD7342-474ML_
MSD7342-564ML_
MSD7342-684ML_
MSD7342-824ML_
MSD7342-105ML_
1. Please specify termination and packaging codes:
2. Inductance shown for each winding, measured at 100 kHz, 0.1 Vrms, 0
3. DCR is for each winding. When leads are connected in parallel, DCR is
4. SRF measured using an Agilent/HP 4191A or equivalent. When leads
5. DC current, at which the inductance drops the specified amount from its
6. Equal current when applied to each winding simultaneously that causes
7. Maximum current when applied to one winding that causes a 40°C
8. Electrical specifications at 25°C.
Refer to Doc 639 “Selecting Coupled Inductors for SEPIC Applications.”
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
© Coilcraft, Inc. 2010
Part number
Termination: L = RoHS compliant matte tin over nickel over phos bronze.
Packaging: C = 7 machine-ready reel. EIA-481 embossed plastic
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.
half the value. When leads are connected in series, DCR is twice the
value.
are connected in parallel, SRF is the same value.
value without current. It is the sum of the current flowing in both windings.
a 40°C temperature rise from 25°C ambient. See temperature rise
calculation.
temperature rise from 25°C ambient. See temperature rise calculation.
MSD7342-105MLC
1
B = Less than full reel. In tape, but not machine ready. To
D = 13 machine-ready reel. EIA-481 embossed plastic
Special order: T = RoHS tin-silver-copper (95.5/4/0.5)
or S = non-RoHS tin-lead (63/37).
tape (250 parts per full reel).
have a leader and trailer added ($25 charge), use
code letter C instead.
tape. Factory order only, not stocked (1000 parts per
full reel).
Inductance
±20% (µH)
1000
100
120
150
180
220
270
330
390
470
560
680
820
10
12
15
18
22
27
33
39
47
56
68
82
2.5
3.3
4.7
5.6
6.8
8.2
2
DCR max
(Ohms)
0.100
0.120
0.130
0.170
0.220
0.250
0.270
0.380
0.420
0.460
0.600
0.680
0.770
1.03
1.35
1.52
1.72
2.41
2.70
3.05
4.00
4.43
5.00
6.80
0.033
0.037
0.051
0.063
0.070
0.075
7.80
Specifications subject to change without notice.
Please check our website for latest information.
3
SRF typ
(MHz)
55
43
35
32
30
27
22
20
18
15
13.5
12.0
11.0
10.0
9.5
8.7
7.3
6.2
5.5
4.5
4.0
3.8
3.5
3.3
3.0
2.8
2.6
2.5
2.3
2.2
2.0
4
Temperature rise calculation based on specified Irms
Coupled Inductor Core and Winding Loss Calculator
This web-based utility allows you to enter frequency, peak-to-peak (ripple)
current, and Irms current to predict temperature rise and overall losses,
including core loss. Visit www.coilcraft.com/coupledloss.
Winding power loss = (
Temperature rise ( t) = Winding power loss ×
Example 1. MSD7342-123ML (Equal current in each winding)
Winding power loss = (1.14 + 1.14 ) × 0.120 = 0.312 W
Example 2.
Winding p
t =
t = 0.312 W ×
t = 0.278 W ×
10% drop 20% drop 30% drop
(
I
L1
6.0
5.2
4.1
3.9
3.7
3.3
2.8
2.5
2.2
2.0
1.9
1.7
1.5
1.3
1.2
1.1
1.0
0.90
0.80
0.70
0.65
0.62
0.59
0.55
0.49
0.45
0.41
0.38
0.36
0.30
0.27
2
+
ower loss = (1.4 + 0.6 ) × 0.120 = 0.278 W
I
MSD7342-123ML
L2
2
) × DCR
129°C
129°C
W
W
Isat (A)
6.2
5.3
4.3
4.1
3.8
3.4
2.9
2.6
2.3
2.2
2.0
1.8
1.6
1.4
1.3
1.2
1.1
1.00
0.92
0.80
0.76
0.66
0.62
0.57
0.52
0.47
0.43
0.40
0.37
0.32
0.29
I
= 36°C
= 40°C
L1
×
2
129°C
2
5
+
2
W
I
L2
(
I
2
6.3
5.4
4.6
4.2
3.9
3.5
3.0
2.7
2.4
2.3
2.1
1.9
1.7
1.5
1.4
1.3
1.2
1.1
0.98
0.90
0.80
0.73
0.66
0.60
0.54
0.50
0.46
0.42
0.38
0.35
0.31
L1
) × DCR in Watts (W)
2
Document 621-2 Revised 11/10/09
= 1.4 A,
2
I
L2
129°C
windings
= 0.6 A)
W
2.17
2.05
1.74
1.57
1.49
1.44
1.24
1.14
1.09
0.95
0.84
0.79
0.76
0.64
0.61
0.58
0.51
0.48
0.45
0.39
0.34
0.32
0.30
0.25
0.24
0.23
0.20
0.19
0.18
0.15
0.14
Document 621-2
both
Irms (A)
6
winding
3.06
2.89
2.46
2.22
2.10
2.03
1.76
1.61
1.54
1.35
1.19
1.11
1.07
0.90
0.86
0.82
0.72
0.67
0.63
0.55
0.48
0.45
0.42
0.36
0.34
0.32
0.28
0.26
0.25
0.21
0.20
one
7