Specifications subject to change without notice.
Please check our website for latest information.
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© 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.
Document 613-1 Revised 07/05/13
Hexa-Path Magnetics
Document 613-1
HP1, HPH1 HP2, HPH2 HP3, HPH3 HP4, HPH4 HP5, HPH5 HP6, HPH6
• Six 1 : 1 isolated windings that can be
connected in series or parallel
• Tightly coupled windings
• 500 Vrms, one minute isolation
between each winding
• Power range: 5 – 50 Watts as inductor
and flyback transformer; up to
150 Watts as forward transformer
• Frequency range up to 1 MHz
These off-the shelf parts can be used
to create thousands of configurations,
providing a convenient method for
designers to create custom magnetics.
By connecting the windings in series
or parallel, the Hexa-Path compo-
nents can be configured as inductors,
coupled inductors and transformers for
use in virtually any application: flyback,
buck/boost, push-pull, forward, full and
half bridge, Cuk, and SEPIC.
There are six different sizes available
with five HP parts and five HPH parts
in each size. The HP offers lower DCR
and higher Irms ratings. The HPH
offers higher inductance and greater
energy storage capabilities.
49
310
58
67
112
211
Outer
Inner
HP3, HP4, HP5, HP6
Two trifilar windings
49
31
0
58
67
11
2
21
1
Outer
Middle
Inner
HPH3, HPH4, HPH5, HPH6
Three bifilar windings
Winding Layouts
10 7
63
11 8
12 9
41
52
One 6-filar winding
HP1, HP2, HPH2HPH1,
-40 -20 020406080100 140120
Ambient temperature (°C)
Percent of rated current
120
110
100
90
80
70
60
50
40
30
20
10
0
25°C
Current Derating
Winding Layouts
Specifications subject to change without notice.
Please check our website for latest information.
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© 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.
Hexa-Path Magnetics
Document 613-2
Document 613-2 Revised 07/05/13
DCR Volt-time Peak energy
Part Inductance2 max3 product4 storage5
Isat6 Irms7
number1 (µH) (Ohms) (V-µsec) (µJ) (A) (A)
HP1-1400L_ 89.6 ±25% 0.130 23.4 Note 8 Note 8 0.74
HP1-0190L_ 12.2 ±20% 0.130 23.4 29.8 0.440 0.74
HP1-0102L_ 6.5 ±15% 0.130 23.4 55.1 0.820 0.74
HP1-0076L_ 4.9 ±10% 0.130 23.4 74.7 1.10 0.74
HP1-0059L_ 3.8 ±5% 0.130 23.4 93.8 1.40 0.74
HP2-1600L_ 78.4 ±25% 0.085 30.8 Note 8 Note 8 1.13
HP2-0216L_ 10.6 ±20% 0.085 30.8 79.2 0.770 1.13
HP2-0116L_ 5.7 ±15% 0.085 30.8 184 1.60 1.13
HP2-0083L_ 4.1 ±10% 0.085 30.8 228 2.10 1.13
HP2-0066L_ 3.2 ±5% 0.085 30.8 252 2.50 1.13
HP3-0950L_ 77.0 ±25% 0.055 30.4 Note 8 Note 8 1.73
HP3-0138L_ 11.2 ±20% 0.055 30.4 59.6 0.650 1.73
HP3-0084L_ 6.8 ±15% 0.055 30.4 111 1.14 1.73
HP3-0055L_ 4.5 ±10% 0.055 30.4 156 1.66 1.73
HP3-0047L_ 3.8 ±5% 0.055 30.4 173 1.90 1.73
HP4-1150L_ 93.2 ±25% 0.055 47.3 Note 8 Note 8 1.88
HP4-0140L_ 11.3 ±20% 0.055 47.3 142 1.00 1.88
HP4-0075L_ 6.1 ±15% 0.055 47.3 307 2.00 1.88
HP4-0060L_ 4.9 ±10% 0.055 47.3 386 2.50 1.88
HP4-0047L_ 3.8 ±5% 0.055 47.3 490 3.20 1.88
HP5-1200L_ 76.8 ±25% 0.045 62.8 Note 8 Note 8 2.25
HP5-0155L_ 9.9 ±20% 0.045 62.8 281 1.50 2.25
HP5-0083L_ 5.3 ±15% 0.045 62.8 562 2.90 2.25
HP5-0067L_ 4.3 ±10% 0.045 62.8 626 3.40 2.25
HP5-0053L_ 3.4 ±5% 0.045 62.8 946 4.70 2.25
HP6-2400L 86.4 ±25% 0.020 87.9 Note 8 Note 8 3.50
HP6-0325L 11.7 ±20% 0.020 87.9 332 1.50 3.50
HP6-0158L 5.69 ±15% 0.020 87.9 981 3.70 3.50
HP6-0121L 4.36 ±10% 0.020 87.9 1485 5.20 3.50
HP6-0090L 3.24 ±5% 0.020 87.9 1833 6.70 3.50
HPH1-1400L_ 202 ±25% 0.340 35.1 Note 8 Note 8 0.62
HPH1-0190L_ 27.4 ±20% 0.340 35.1 31.1 0.300 0.62
HPH1-0102L_ 14.7 ±15% 0.340 35.1 60.2 0.570 0.62
HPH1-0076L_ 10.9 ±10% 0.340 35.1 99.2 0.850 0.62
HPH1-0059L_ 8.5 ±5% 0.340 35.1 107 1.00 0.62
HPH2-1600L_ 160 ±25% 0.155 44.0 Note 8 Note 8 0.83
HPH2-0216L_ 21.6 ±20% 0.155 44.0 82.3 0.550 0.83
HPH2-0116L_ 11.6 ±15% 0.155 44.0 177 1.10 0.83
HPH2-0083L_ 8.3 ±10% 0.155 44.0 302 1.70 0.83
HPH2-0066L_ 6.6 ±5% 0.155 44.0 333 2.00 0.83
HPH3-0950L_ 160 ±25% 0.125 43.9 Note 8 Note 8 1.13
HPH3-0138L_ 23.6 ±20% 0.125 43.9 52.5 0.420 1.13
HPH3-0084L_ 14.2 ±15% 0.125 43.9 98.0 0.740 1.13
HPH3-0055L_ 9.3 ±10% 0.125 43.9 169 1.20 1.13
HPH3-0047L_ 7.94 ±5% 0.125 43.9 196 1.40 1.13
HPH4-1150L_ 194 ±25% 0.078 68.3 Note 8 Note 8 1.65
HPH4-0140L_ 23.7 ±20% 0.078 68.3 138 0.680 1.65
HPH4-0075L_ 12.7 ±15% 0.078 68.3 314 1.40 1.65
HPH4-0060L_ 10.1 ±10% 0.078 68.3 368 1.70 1.65
HPH4-0047L_ 7.94 ±5% 0.078 68.3 529 2.30 1.65
HPH5-1200L_ 173 ±25% 0.070 94.2 Note 8 Note 8 1.95
HPH5-0155L_ 22.3 ±20% 0.070 94.2 248 0.940 1.95
HPH5-0083L_ 12.0 ±15% 0.070 94.2 546 1.90 1.95
HPH5-0067L_ 9.65 ±10% 0.070 94.2 700 2.40 1.95
HPH5-0053L_ 7.63 ±5% 0.070 94.2 809 2.90 1.95
HPH6-2400L 194 ±25% 0.030 131.9 Note 8 Note 8 2.90
HPH6-0325L 26.3 ±20% 0.030 131.9 477 1.20 2.90
HPH6-0158L 12.8 ±15% 0.030 131.9 1176 2.70 2.90
HPH6-0121L 9.8 ±10% 0.030 131.9 1783 3.80 2.90
HPH6-0090L 7.29 ±5% 0.030 131.9 1944 4.60 2.90
Document 613-2
1. Please specify termination and packaging codes:
HPH1-1400LD
Termination: L = RoHS compliant tin-silver over
tin over nickel over phos bronze.
Special order:
T = RoHS tin-silver-copper
(95.5/4/0.5) or
S = non-RoHS tin-lead (63/37).
Packaging: All but HP6 and HPH6:
D = 13″ machine-ready reel.
EIA-481 embossed plastic tape
B = Less than full reel. In tape, but
not machine ready. To have
a leader and trailer added
($25 charge), use code letter D
instead.
HP6 and HPH6: 24 per tray (no code)
2. Inductance is per winding, measured at 100 kHz,
0.1 Vrms, 0 Adc.
3. DCR is per winding, measured on Cambridge
Technology micro-ohmmeter or equivalent.
4. Volt-time product is for a single winding or multiple
windings connected in parallel. To calculate volt-
time product for windings connected in series, mul-
tiply the value specified in the table by the number
of windings connected in series.
5. Peak energy storage is for any combination of wind-
ings, assuming saturation current applied. See note
6 for definition of saturation current.
6. DC current at which the inductance drops 30% typ
from its value without current, based on current
applied to all six windings connected in series. For
applications where all windings are not connected
in series, use the following equation to calculate
Isat:
Isat = Isattable × 6 ÷ number of windings in series.
7. Current that causes a 40°C rise from 25°C ambient
due to self heating, tested with continuous current
flow through all windings connected in series.
Application temperature rise will depend on the op-
erating current, duty cycle, and winding connection.
8. Part is designed exclusively for use as a forward
converter transformer and was not tested for en-
ergy storage and saturation current.
9. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components”
before soldering
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel
over phos bronze. Other terminations available at
additional cost.
Ambient temperature –55°C to +85°C with Irms
current, +85°C to +125°C with derated current
Storage temperature Component: –55°C to +125°C.
Packaging: –55°C to +80°C
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)
Failures in Time (FIT) 38 per billion hours
Mean Time Between Failures (MTBF)
26,315,789 hours, calculated per Telcordia SR-332
PCB washing Tested with pure water or alcohol only.
For other solvents, see Doc787_PCB_Washing.pdf
Specifications subject to change without notice.
Please check our website for latest information.
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© 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.
Hexa-Path Magnetics
Document 613-3
Document 613-3 Revised 07/05/13
12
12
1
1
1
1
Recommended
Land Pattern
Recommended
Land Pattern
0.244
6,20
0.291
7,40
0.512
13,0
0.642
16,30
0.512
13,0
0.661
16,80
0.512
13,00
0.362
9,20
0.508
12,90
0.433
11,00
0.575
14,60
0.098
2,50
0.079
2,00
0.098
2,50
0.079
2,00
0.098
2,50
0.055
1,40
0.069
1,75
0.028
0,70
0.028
0,70
Dot indicates pin 1
max
max
max
max
max
max
0.004 / 0,10
0.004 / 0,10
12
12
HP1-1234L
XXXXY
HP2-1234L
XXXXY
0.394
10,00
0.063
1,60
Dot indicates pin 1
HP1, HPH1
HP2, HPH2
Weight: 1.4 g
Packaging 500 per 13″ reel Plastic tape: 24 mm wide,
0.5 mm thick, 20 mm pocket spacing, 6.6 mm pocket depth
Weight: 2.7 – 2.8 g
Packaging 400 per 13″ reel Plastic tape: 32 mm wide,
0.4 mm thick, 20 mm pocket spacing, 7.6 mm pocket depth
Dimensions are in inches
mm
Dimensions are in inches
mm
Specifications subject to change without notice.
Please check our website for latest information.
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© 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.
Hexa-Path Magnetics
Document 613-4
Document 613-4 Revised 07/05/13
Recommended
Land Pattern
0.382
9,70
0.685
17,40
0.950
24,13
0.699
17,00
0.799
20.30
0.100
2,54
0.100
2,54
0.069
1,75
0.028
0,70
max
max
max
0.004 / 0,10
HP4-1234L
CCIXXXX
121
1
0.748
19,0
0.130
3,30
Dot indicates pin 1
12
121
1
Recommended
Land Pattern
0.291
7,40
0.677
17,20
0.865
22,00
0.665
16,88
0.591
15,00
0.693
17,60
0.135
3,43
0.098
2,50
0.098
2,50
0.069
1,75
0.028
0,70
Dot indicates pin 1
max
max
max
0.004 / 0,10
12
HP3-1234L
CCIXXXX
HP3, HPH3
HP4, HPH4
Weight: 4.2 – 4.6 g
Packaging 200 per 13″ reel Plastic tape: 44 mm wide,
0.4 mm thick, 28 mm pocket spacing, 9.6 mm pocket depth
Weight: 6.8 – 7.5 g
Packaging 200 per 13″ reel Plastic tape: 44 mm wide,
0.4 mm thick, 24 mm pocket spacing, 10.56 mm pocket depth
Dimensions are in inches
mm
Dimensions are in inches
mm
Specifications subject to change without notice.
Please check our website for latest information.
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© 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.
Hexa-Path Magnetics
Document 613-5
Document 613-5 Revised 07/05/13
0.535
13,6
1.285
32,65
1.173
29,80
max
0.004 / 0,10
max
Recommended
Land Pattern
1.053
26,75
1.024
26,0
0.148
3,75
0.148
3,75 0.079
2,00
0.039
1,00
max
121
1
1.10
28,2
0.108
2,75
Dot indicates pin 1
12
HP6-1234L
CCIXXXX
0.425
10,80
1.148
29,15
0.969
24,6
max
0.004 / 0,10
max
Recommended
Land Pattern
0.810
20,57
0.827
21,0
0.118
3,00
0.118
3,00
0.069
1,75
0.028
0,70
max
121
1
0.930
23,62
0.130
3,3
Dot indicates pin 1
12
HP5-1234L
CCIXXXX
HP5, HPH5
HP6, HPH6
Weight: 10.6 – 11.5 g
Packaging 175 per 13″ reel Plastic tape: 44 mm wide,
0.4 mm thick, 28 mm pocket spacing, 12.0 mm pocket depth
Weight: 22.4 – 24.3 g
Packaging 24 per tray
Dimensions are in inches
mm
Dimensions are in inches
mm
Specifications subject to change without notice.
Please check our website for latest information.
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© 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.
Hexa-Path Magnetics
Document 613-6
Document 613-6 Revised 07/05/13
Inductors – using multiple windings
DCR Volt-time Peak energy
Part Inductance max product storage Isat Irms
number (µH) (Ohms) (V-µsec) (µJ) (A) (A)
HP3-0138L_ 11.2 ±20% 0.055 30.4 1.656 0.650 1.73
Connecting windings in series
For higher inductance, the windings can be connected in series. As inductance
increases, energy storage and Irms remain the same, but DCR increases and
Isat decreases.
Example: Calculate new electricals for HP3-0138L with four windings (Wn)
connected in series:
Inductance = Inductancetable × Wn2
= 11.2 × 42 = 179.2 µH
DCR = DCRtable × Wn
= 0.055 × 4 = 0.22 Ohms
Isat = (Isattable) × 6 ÷ Wn
= (0.65 × 6) ÷ 4 = 0.975 A
Irms = Irmstable = 1.73 A
Connecting windings in parallel
To increase current ratings, the windings (Wn) can be connected in parallel. DCR
decreases, current ratings increase, and inductance remains the same.
Example: Calculate new electricals for HP5-0083L, with three (Wn) windings
connected in parallel (equivalent to one winding in series):
Inductance = Inductancetable
= 11.2 µH
DCR = 1 ÷ [Wn × (1 ÷ DCRtable)]
= 1 ÷ [3 × (1 ÷ 0.045)] = 0.015 Ohms
Isat = (Isattable × 6) ÷ Wn
= (0.65 × 6) ÷ 1 = 3.9 A
Irms = Irmstable × Wn
= 1.73 × 3 = 5.19 A
Formulas used to calculate electrical characteristics
Connecting windings in series
Inductance = Inductancetable × (number of windings)2
DCR = DCRtable × number of windings
Isat = (Isattable × 6) ÷ number of windings connected in series
Irms = Irmstable
Connecting windings in parallel
Inductance = Inductancetable
DCR = 1 ÷ [number of windings × (1 ÷ DCRtable)]
Isat = (Isattable × 6) ÷ number of windings connected in series
Irms = Irmstable × number of windings
1
2
3
9
4
12
11
10
8
7
5
6
L=179.2 µH
DCR=0.22
sat=0.975 A
rms=1.73 A
I
I
1
2
3
9
4
12
11
10 8
7
5
6
L=11.2 µH
DCR=0.015
sat=3.9 A
rms=5.19 A
I
I
Specifications subject to change without notice.
Please check our website for latest information.
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© 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.
Hexa-Path Magnetics
Document 613-7
Document 613-7 Revised 07/05/13
Connecting primary windings in series
When primary windings (Wpri) are connected in series, inductance
increases, energy storage and Irms remain the same, but DCR increases
and Isat decreases.
Example: For HPH3-0138L, connect two primary windings in series:
Inductance = Inductancetable × Wpri2
= 23.6 × 22 = 94.4 µH
DCR = DCRtable × Wpri
= 0.125 × 2 = 0.25 Ohms
Isat = (Isattable × 6) ÷ Wpri
= (0.42 × 6) ÷ 2 = 1.26 A
Irms = Irmstable = 1.13 A
Connecting secondary windings in parallel
When secondary windings (Wsec) are connected in parallel, DCR decreases
and Irms increases.
Example: For HPH3-0083L, connect two secondary windings in parallel:
DCR = 1 ÷ [Wsec × (1 ÷ DCRtable)]
= 1 ÷ [(2 × (1 ÷ 0.125)] = 0.0625 Ohms
Irms = Irmstable × Wsec = 1.13 × 2 = 2.26 A
Create a 13 Watt 2 : 1 : 1 flyback transformer with a bias winding
Choose HPH3-0138L
Vin = 36 – 57 Vdc; Vout = 12 V, 1.1 A
DCR Volt-time Peak energy
Part Inductance max product storage Isat Irms
number (µH) (Ohms) (V-µsec) (µJ) (A) (A)
HPH3-0138L 23.6 ±20% 0.125 43.9 1.457 0.420 1.13
Formulas used to calculate electrical characteristics
Connecting windings in series
Inductance = Inductancetable × (number of windings)2
DCR = DCRtable × number of windings
Isat = (Isattable × 6) ÷ number of windings connected in series
Irms = Irmstable
Connecting windings in parallel
Inductance = Inductancetable
DCR = 1 ÷ [number of windings × (1 ÷ DCRtable)]
Isat = (Isattable × 6) ÷ number of windings connected in series
Irms = Irmstable × number of windings
1
Pri
Bias
2
3
12
11
10
9
4
Sec
5
6
7
8
Primary:
L=94.4 µH
DCR=0.25
sat=1.26 A
rms=1.13 A
I
I
Secondary:
DCR=0.0625
rms=2.26 A
I
Specifications subject to change without notice.
Please check our website for latest information.
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© 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.
Hexa-Path Magnetics
Document 613-8
Document 613-8 Revised 07/05/13
Connecting primary windings in parallel
When primary windings (Wpri) are connected in parallel, DCR decreases,
Irms increases, and inductance and volt-time product remain the same.
Example: For HPH6-2400L, connect three primary windings in parallel:
Inductance = Inductancetable
= 194 µH
DCR = 1 ÷ [Wpri × (1 ÷ DCRtable)]
= 1 ÷ [(3 × (1 ÷ 0.030]) = 0.010 Ohms
VT = VTtable
= 131.9 V-µsec
Irms = Irmstable × Wpri
= 2.90 × 3 = 8.70 A
Connecting secondary windings in parallel
When secondary windings (Wsec) are connected in parallel, DCR de-
creases and Irms increases.
Example: For HPH6-2400L, connect three secondary windings in paral-
lel:
DCR = 1 ÷ [Wsec × (1 ÷ DCRtable)]
= 1 ÷ [(3 × (1 ÷ 0.030)] = 0.010 Ohms
Irms = Irmstable × Wsec
= 2.90 × 3 = 8.70 A
Create a 130 Watt, 1 : 1, two switch forward converter transformer
Choose HPH6-2400L
Vin = 36 – 57 Vdc; Vout = 12 V, 10.8 A
DCR Volt-time Peak energy
Part Inductance max product storage Isat Irms
number (µH) (Ohms) (V-µsec) (µJ) (A) (A)
HPH6-2400L 194 ±25% 0.030 131.9 N/A N/A 2.90
Formulas used to calculate electrical characteristics
Connecting windings in series
Inductance = Inductancetable × (number of windings)2
DCR = DCRtable × number of windings
Isat = (Isattable × 6) ÷ number of windings connected in series
Irms = Irmstable
Connecting windings in parallel
Inductance = Inductancetable
DCR = 1 ÷ [number of windings × (1 ÷ DCRtable)]
Isat = (Isattable × 6) ÷ number of windings connected in series
Irms = Irmstable × number of windings
14
25
36
12 9
11 8
10 7
Pri Sec
Primary:
L=194 µH
DCR=0.01
rms=8.7 A
VT = 131.9 V-µsec
I
Secondary:
DCR=0.01
rms=8.7 A
I
Specifications subject to change without notice.
Please check our website for latest information.
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© 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.
Hexa-Path Magnetics
Document 613-9
Document 613-9 Revised 07/05/13
Connecting primary windings in parallel
When primary windings (Wpri) are connected in parallel, DCR decreases,
current ratings increase, and inductance and volt-time product remain the
same.
Example: For HPH-2400L, connect two primary windings in parallel:
Inductance = Inductancetable
= 194 µH
DCR = 1 ÷ [Wpri × (1 ÷ DCRtable)]
= 1 ÷ [(2 × (1 ÷ 0.030)] = 0.015 Ohms
VT = VTtable
= 131.9 V-µsec
Irms = Irmstable × Wpri
= 2.90 × 2 = 5.8 A
Connecting secondary windings in series
When secondary windings (Wsec) are connected in series, Irms remains
the same, but DCR increases.
Example: For HP6-2400L, connect four secondary windings in series,
creating a center tap at pins 9 and 5. For each half of the secondary:
DCR = DCRtable × Wsec
= 0.030 × 2 = 0.060 Ohms
Irms = Irmstable
= 2.9 A
Create a 100 Watt, 1 : 2, half bridge forward converter transformer with center tapped secondary
Choose HP6-2400L
Vin = 36 – 57 Vdc; Vout = 24 V, 4.2 A
DCR Volt-time Peak energy
Part Inductance max product storage Isat Irms
number (µH) (Ohms) (V-µsec) (µJ) (A) (A)
HPH6-2400L 194 ±25% 0.030 131.9 N/A N/A 2.90
Formulas used to calculate electrical characteristics
Connecting windings in series
Inductance = Inductancetable × (number of windings)2
DCR = DCRtable × number of windings
Isat = (Isattable × 6) ÷ number of windings connected in series
Irms = Irmstable
Connecting windings in parallel
Inductance = Inductancetable
DCR = 1 ÷ [number of windings × (1 ÷ DCRtable)]
Isat = (Isattable × 6) ÷ number of windings connected in series
Irms = Irmstable × number of windings
1
Pri
2
3
12
11
10 Sec A
Sec B
5
4
6
7
8
9
Primary:
L=194 µH
DCR =0.015
rms=5.8 A
VT =131.9V-µsec
I
Each half secondary;
SecA(3-9), SecB(5-7)
:
DCR =0.06
rms=2.9 A
I
Specifications subject to change without notice.
Please check our website for latest information.
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© 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.
Hexa-Path Magnetics
Document 613-10
Document 613-10 Revised 07/05/13
Connecting primary windings in series
When primary windings (Wpri) are connected in series, inductance and
volt-time product increase, energy storage and Irms remain the same,
but DCR increases.
Example: For HPH1-1400L, connect three primary windings in series:
Inductance = Inductancetable × Wpri2
= 89.6 × 32 = 806.4 µH
DCR = DCRtable × Wpri
= 0.130 × 3 = 0.39 Ohms
VT = VTtable × Wpri
= 70.2 V-µsec
Irms = Irmstable
= 0.74
Connecting secondary windings in series
When secondary windings (Wsec) are connected in series, Irms remains
the same, but DCR increases.
Example: For HP1-1400L, connect three secondary windings in series:
DCR = DCRtable × Wsec
= 0.130 × 3 = 0.39 Ohms
Irms = Irmstable
= 0.74
Create a 1 : 1 gate drive transformer
Choose HP1-1400L
DCR Volt-time Peak energy
Part Inductance max product storage Isat Irms
number (µH) (Ohms) (V-µsec) (µJ) (A) (A)
HP1-1400L 89.6 ±25% 0.130 23.4 N/A N/A 0.74
Formulas used to calculate electrical characteristics
Connecting windings in series
Inductance = Inductancetable × (number of windings)2
DCR = DCRtable × number of windings
Isat = (Isattable × 6) ÷ number of windings connected in series
Irms = Irmstable
Connecting windings in parallel
Inductance = Inductancetable
DCR = 1 ÷ [number of windings × (1 ÷ DCRtable)]
Isat = (Isattable × 6) ÷ number of windings connected in series
Irms = Irmstable × number of windings
1
4
Pri Sec
5
6
3
2
11
10
12
9
8
7
Primary:
L=806.4 µH
DCR=0.39
rms=0.74 A
VT = 70.2 V-µsec
I
Secondary:
DCR=0.39
rms=0.74 A
I
