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WE-MCRI SMT Molded Coupled Inductor

Size Dimen­sionsL
(mm)
W
(mm)
H
(mm)
1090 11 10 9
1040 11 10 4

Characteristics

  • Composite core material allows high saturation current and compact design
  • Better Leakage Inductance (Lk) and Rated Current (Ir) than comparable components
  • Magnetically shielded
  • 1:1 Transformer
  • Operation temperature: -40°C to +125°C

Applications

  • Isolated converter application (e.g. Flyback converter)
  • Buck, Boost, Sepic, Zeta, CUK Converter
  • Switching regulator with second, unregulated output voltage

Products

All
1090
1040
Order Code Data­sheet Simu­lation DownloadsL1
(µH)
L2
(µH)
nIR
(A)
IR 2
(A)
ISAT1
(A)
ISAT2
(A)
RDC1 typ
(mΩ)
RDC2 typ
(mΩ)
RDC1 max
(mΩ)
RDC2 max
(mΩ)
fres
(MHz)
LS
(µH)
Samples
7448990010SPEC
7 files 1 1 1:1 17 17 43.5 43.5 4.5 4.5 5.6 5.6 35 0.17
7448990015SPEC
7 files 1.5 1.5 1:1 12.5 12.5 34 34 8.8 8.8 9.4 9.4 29 0.18
7448990022SPEC
7 files 2.2 2.2 1:1 11.5 11.5 29.5 29.5 10.5 10.5 12.5 12.5 20 0.19
7448990033SPEC
7 files 3.3 3.3 1:1 7.5 7.5 28.2 28.2 23.5 23.5 26 26 19 0.22
7448990047SPEC
7 files 4.7 4.7 1:1 5.9 5.9 24.2 24.2 36 36 40 40 17.5 0.235
7448990068SPEC
7 files 6.8 6.8 1:1 5 5 21.2 21.2 46 46 51.5 51.5 13 0.245
7448990082SPEC
7 files 8.2 8.2 1:1 4.8 4.8 18.5 18.5 56 56 63 63 9.5 0.26
7448990100SPEC
7 files 10 10 1:1 4.5 4.5 17 17 62 62 69 69 9 0.27
7448990150SPEC
7 files 15 15 1:1 3.9 3.9 9.5 9.5 78 78 87 87 8.5 0.3
7448990220SPEC
7 files 22 22 1:1 3.4 3.4 8.1 8.1 95 95 106 106 6.5 0.335
7448990330SPEC
7 files 33 33 1:1 2.9 2.9 6.8 6.8 130 130 145 145 5.5 0.35
7448990470SPEC
7 files 47 47 1:1 2.3 2.3 6 6 216 216 240 240 4.5 0.37
7448991010SPEC
6 files 1 1 1:1 12 12 30.2 30.2 6.3 6.3 7.5 7.5 32 0.16
7448991015SPEC
6 files 1.5 1.5 1:1 11.1 11.1 28.1 28.1 8.6 8.6 10 10 24.5 0.17
7448991022SPEC
6 files 2.2 2.2 1:1 8.2 8.2 20.6 20.6 14 14 16.5 16.5 21.5 0.18
7448991027SPEC
6 files 2.7 2.7 1:1 7.4 7.4 16.5 16.5 16.3 16.3 16.8 16.8 19 0.2
7448991033SPEC
6 files 3.3 3.3 1:1 6.8 6.8 14.3 14.3 20.7 20.7 23.5 23.5 17 0.21
7448991047SPEC
6 files 4.7 4.7 1:1 6.2 6.2 13.8 13.8 24.4 24.4 29 29 14 0.225
7448991068SPEC
6 files 6.8 6.8 1:1 5 5 12 12 38 38 44 44 11.5 0.24
7448991082SPEC
6 files 8.2 8.2 1:1 4.7 4.7 11.3 11.3 41.2 41.2 46 46 10 0.25
7448991100SPEC
6 files 10 10 1:1 3.7 3.7 9.8 9.8 55 55 62 62 9.4 0.3
7448991150SPEC
6 files 15 15 1:1 3.25 3.25 7.8 7.8 83 83 95 95 7.7 0.32
7448991220SPEC
6 files 22 22 1:1 2.2 2.2 6.1 6.1 144 144 160 160 5.8 0.33
7448991330SPEC
6 files 33 33 1:1 2.05 2.05 5 5 207 207 230 230 4.7 0.34
7448991470SPEC
6 files 47 47 1:1 1.5 1.5 4.4 4.4 312 312 340 340 3.9 0.35
Order Code Data­sheet Simu­lation
7448990010SPEC
7448990015SPEC
7448990022SPEC
7448990033SPEC
7448990047SPEC
7448990068SPEC
7448990082SPEC
7448990100SPEC
7448990150SPEC
7448990220SPEC
7448990330SPEC
7448990470SPEC
7448991010SPEC
7448991015SPEC
7448991022SPEC
7448991027SPEC
7448991033SPEC
7448991047SPEC
7448991068SPEC
7448991082SPEC
7448991100SPEC
7448991150SPEC
7448991220SPEC
7448991330SPEC
7448991470SPEC
Samples
Order Code Data­sheet Simu­lation DownloadsL1
(µH)
L2
(µH)
nIR
(A)
IR 2
(A)
ISAT1
(A)
ISAT2
(A)
RDC1 typ
(mΩ)
RDC2 typ
(mΩ)
RDC1 max
(mΩ)
RDC2 max
(mΩ)
fres
(MHz)
LS
(µH)
Samples

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

An Excellent Duet!

Coupled Inductors

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. The WE-MCRI features a soft saturation behavior with its crystalline core structure and distributed air gap.

The coupled inductor range includes high voltage isolation versions up to 2 kV, low profile types and versions with various turns ratios.

The innovative design in detail

The distributed air gap within the crystalline structure
The distributed air gap within the crystalline structure
High coupling coefficient
High coupling coefficient
Soft saturation
Soft saturation

Overview of typical applications

Multi Output Buck | Flyback | SEPIC
ZETA | Cuk | High Step-up Boost

Overview of typical applications

Multi Output Buck

  • Isolation: Isolated/Non-isolated
  • Multiple Output: Yes
  • Output: Non-inverted
  • Complexity: Low
  • Cost: Low
  • Product Series Recommendation: WE-DPC HV, WE-TDC HV, WE-MTCI

Flyback

  • Isolation: Isolated/Non-isolated
  • Multiple Output: Yes
  • Output: Non-inverted
  • Complexity: Low
  • Cost: Low
  • Product Series Recommendation: WE-TDC HV, WE-MTCI

SEPIC

  • Isolation: Isolated/Non-isolated
  • Multiple Output: Yes
  • Output: Non-inverted
  • Complexity: Low
  • Cost: Low
  • Product Series Recommendation: WE-DD, WE-CFWI, WE-MTCI, WE-MCRI

ZETA

  • Isolation: Isolated/Non-isolated
  • Multiple Output: Yes
  • Output: Non-inverted
  • Complexity: Low
  • Cost: Low
  • Product Series Recommendation: WE-DPC, WE-CFWI, WE-DCT

Cuk

  • Isolation: Isolated/Non-isolated
  • Multiple Output: Yes
  • Output: Non-inverted
  • Complexity: Low
  • Cost: Low
  • Product Series Recommendation: WE-CFWI, WE-DD, WE-MCRI

High Step-up Boost

  • Isolation: Isolated/Non-isolated
  • Multiple Output: Yes
  • Output: Non-inverted
  • Complexity: Low
  • Cost: Low
  • Product Series Recommendation: WE-EHPI, WE-MTCI

Simulate now in REDEXPERT

The online platform for easier component selection

Important features:

  • The world’s most accurate AC loss model Inductor simulation and selection for DC/DC converters
  • Ability to compare inductance/current and temperature rise/DC current using interactive measurement curves
  • Filter settings for over 20 electrical and mechanical parameters
  • Online platform based on measured values
  • Order free samples directly
  • Direct access to product datasheets

Demo Board

Dual-Output Isolated Buck Converter

With the High Voltage Coupled Inductor WE-CPIB HV, an additional isolated output in a buck converter can be achieved, with minimal solution size and design effort.

Demo Module Features:

  • USB powered
  • Single and Dual-output buck operation
  • Output LED indicator