WE-CFWI Coupled Flatwire Inductor

Size	L (mm)	W (mm)	H (mm)
1310	15.5	13.2	10.5
1312	15.5	13.2	12.5
1813	21	18.5	13.5

LTSpice files

LT
LTSpice_WE-CFWI (rev22a).zip
|
2.4 KB

Characteristics

Very low RDC
Saturation current higher than 50 A
Low inductance drift over temperature
Coupled inductor with two identical windings
More variants due to parallel and series connection possible

Applications

High power switching regulators
1:1 flyback converter
Buck, Boost, Sepic and Cuk Converter
Switching regulators with second unregulated output voltage
Battery Cell Charging Balancer

Application Notes

An Excellent Duet!

The WE-MCRI is an innovative molded coupled inductor with fully automated bifilar winding process. It offers an almost ideal coupling coefficient up to 0.995.

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Order Code	Datasheet	Simulation	Downloads	Status	L₁(µH)	L₂(µH)	n	I_R(A)	I_{R 2}(A)	I_SAT1(A)	I_SAT2(A)	R_{DC 1}(mΩ)	R_{DC 2}(mΩ)
74485540080	0.8 µH, 0.8 µH, 1:1	Simulation	Downloads8 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 8 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 10.8 µH	Inductance 20.8 µH	Turns Ratio1:1	Rated Current28 A	Rated Current 228 A	Saturation Current 162 A	Saturation Current 262 A	DC Resistance 11.6 mΩ	DC Resistance 21.6 mΩ
74485540120	1.2 µH, 1.2 µH, 1:1	Simulation	Downloads8 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 8 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 11.2 µH	Inductance 21.2 µH	Turns Ratio1:1	Rated Current23 A	Rated Current 223 A	Saturation Current 147 A	Saturation Current 247 A	DC Resistance 12.4 mΩ	DC Resistance 22.4 mΩ
74485540170	1.7 µH, 1.7 µH, 1:1	Simulation	Downloads8 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 8 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 11.7 µH	Inductance 21.7 µH	Turns Ratio1:1	Rated Current21 A	Rated Current 221 A	Saturation Current 139 A	Saturation Current 239 A	DC Resistance 13.3 mΩ	DC Resistance 23.3 mΩ
74485540220	2.2 µH, 2.2 µH, 1:1	Simulation	Downloads8 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 8 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 12.2 µH	Inductance 22.2 µH	Turns Ratio1:1	Rated Current18 A	Rated Current 218 A	Saturation Current 135 A	Saturation Current 235 A	DC Resistance 14.2 mΩ	DC Resistance 24.2 mΩ
74485540290	2.9 µH, 2.9 µH, 1:1	Simulation	Downloads8 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 8 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 12.9 µH	Inductance 22.9 µH	Turns Ratio1:1	Rated Current17 A	Rated Current 217 A	Saturation Current 129 A	Saturation Current 229 A	DC Resistance 15.6 mΩ	DC Resistance 25.6 mΩ
74485540350	3.5 µH, 3.5 µH, 1:1	Simulation	Downloads8 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 8 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 13.5 µH	Inductance 23.5 µH	Turns Ratio1:1	Rated Current14 A	Rated Current 214 A	Saturation Current 127 A	Saturation Current 227 A	DC Resistance 17.5 mΩ	DC Resistance 27.5 mΩ
74485540440	4.4 µH, 4.4 µH, 1:1	Simulation	Downloads7 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS WE-CFWI_1310 (rev1).igs \| 2.3 MB STP WE-CFWI_1310 (rev1).stp \| 930.1 KB Download all 7 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 14.4 µH	Inductance 24.4 µH	Turns Ratio1:1	Rated Current12 A	Rated Current 212 A	Saturation Current 124 A	Saturation Current 224 A	DC Resistance 19.6 mΩ	DC Resistance 29.6 mΩ
74485540680	6.8 µH, 6.8 µH, 1:1	Simulation	Downloads8 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS Download_IGS_WE-CFWI-1312 (rev1).igs \| 3 MB STP Download_STP_WE-CFWI-1312 (rev1).stp \| 1 MB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 8 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 16.8 µH	Inductance 26.8 µH	Turns Ratio1:1	Rated Current14 A	Rated Current 214 A	Saturation Current 116 A	Saturation Current 216 A	DC Resistance 111.3 mΩ	DC Resistance 211.3 mΩ
74485542680	6.8 µH, 6.8 µH, 1:1	Simulation	Downloads8 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS Download_IGS_WE-CFWI-1813 (rev1).igs \| 3.4 MB STP Download_STP_WE-CFWI-1813 (rev1).stp \| 1.1 MB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 8 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 16.8 µH	Inductance 26.8 µH	Turns Ratio1:1	Rated Current13.5 A	Rated Current 213.5 A	Saturation Current 126 A	Saturation Current 226 A	DC Resistance 16.1 mΩ	DC Resistance 26.1 mΩ
74485540820	8.2 µH, 8.2 µH, 1:1	Simulation	Downloads8 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS Download_IGS_WE-CFWI-1312 (rev1).igs \| 3 MB STP Download_STP_WE-CFWI-1312 (rev1).stp \| 1 MB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 8 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 18.2 µH	Inductance 28.2 µH	Turns Ratio1:1	Rated Current13.5 A	Rated Current 213.5 A	Saturation Current 114 A	Saturation Current 214 A	DC Resistance 113 mΩ	DC Resistance 213 mΩ
74485542820	8.2 µH, 8.2 µH, 1:1	Simulation	Downloads8 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS Download_IGS_WE-CFWI-1813 (rev1).igs \| 3.4 MB STP Download_STP_WE-CFWI-1813 (rev1).stp \| 1.1 MB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 8 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 18.2 µH	Inductance 28.2 µH	Turns Ratio1:1	Rated Current13 A	Rated Current 213 A	Saturation Current 124 A	Saturation Current 224 A	DC Resistance 18.4 mΩ	DC Resistance 28.4 mΩ
74485540101	10 µH, 10 µH, 1:1	Simulation	Downloads8 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS Download_IGS_WE-CFWI-1312 (rev1).igs \| 3 MB STP Download_STP_WE-CFWI-1312 (rev1).stp \| 1 MB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 8 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 110 µH	Inductance 210 µH	Turns Ratio1:1	Rated Current13 A	Rated Current 213 A	Saturation Current 113.5 A	Saturation Current 213.5 A	DC Resistance 113.9 mΩ	DC Resistance 213.9 mΩ
74485542101	10 µH, 10 µH, 1:1	Simulation	Downloads8 files EDA models: Components ZIP ALT WE-CFWI (rev22b).IntLib \| 1 MB CDS Cadence_WE-CFWI (rev22a).zip \| 5.6 MB EAG Eagle_WE-CFWI (rev19a).lbr \| 36.2 KB KIC KiCad_WE-CFWI (rev25b).zip \| 587.2 KB ZUK Download_Cadstar_WE-CFWI (rev19a).zip \| 9.8 KB CAD files ZIP IGS Download_IGS_WE-CFWI-1813 (rev1).igs \| 3.4 MB STP Download_STP_WE-CFWI-1813 (rev1).stp \| 1.1 MB Electric models ZIP PSP PSpice_WE-CFWI (rev22a).zip \| 5.5 KB Download all 8 files as zip archive ZIP	Status Activei\| Production is active. Expected lifetime: >10 years.	Inductance 110 µH	Inductance 210 µH	Turns Ratio1:1	Rated Current11.5 A	Rated Current 211.5 A	Saturation Current 122 A	Saturation Current 222 A	DC Resistance 111 mΩ	DC Resistance 211 mΩ

REDEXPERT loss simulation

Find the best inductor!

REDEXPERT loss simulation

Find the best inductor!

REDEXPERT has the world’s most accurate AC loss model, which even includes the DC-bias current. With dedicated DC-DC topologies or the generic loss simulator, you can accurately determine the AC and DC losses for your converter. The model includes the core material, shape and winding structure of the inductor. REDEXPERT recommends suitable inductors and allows you to add more filters to find the best inductor for your application.

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Schematic representations of the REDEXPERT loss simulator

Videos

WE-MCRI – Innovative Molded Coupled Inductor by Würth Elektronik eiSos

LTSpice files

Characteristics

Applications

Application Notes

An Excellent Duet!

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REDEXPERT loss simulation

REDEXPERT loss simulation

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