Product Highlights > Coupled Inductors

An Excellent Duet! Coupled Inductors

The Würth Elektronik 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.

Benefits

Up to 0.995 coupling coefficient
Up to 2.0 kV isolation
Soft saturation
Up to 120 A ISAT and 48 A IR
Large portfolio

High Coupling Version

The first fully magnetically shielded coupled inductor with molding technology for high current!

The distributed air gap within the crystalline structure

High Coupling Coefficient

Soft Saturation

High Voltage Version

High Voltage Isolation up to 2 kV!

Standard Isulation

High Voltage Insulation with multiple Layers

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 indicators

Typical Applications Overview

Multi Output Buck

Flyback

SEPIC

ZETA

Cuk

High Step-up Boost

Topology	Isolation	Multiple Output	Output	Complexity	Cost	Product Series Recommendation
Multi Output Buck	Isolated/Non-isolated	Yes	Non-inverted	Low	Low	WE-DPC HV, WE-TDC HV, WE-MTCI
Flyback	Isolated/Non-isolated	Yes	Non-inverted	Moderate	Moderate	WE-CPIB HV, WE-MTCI, WE-TDC HV
SEPIC	Non-isolated	No	Non-inverted	Moderate	Moderate	WE-DD, WE-MCRI, WE-CFWI
ZETA	Non-isolated	No	Non-inverted	Moderate	Moderate	WE-CFWI, WE-DCT
Cuk	Non-isolated	No	Inverted	Moderate	Moderate	WE-CFWI, WE-DD, WE-MCRI
High Step-up Boost	Non-isolated	No	Non-inverted	Moderate	Low	WE-EHPI, WE-MTCI

Product Overview

Part Series	Type	Description	View Details
WE-MCRI	High Coupling	Composite core material allows high saturation current and compact design	View Details
WE-CPIB HV	High Voltage	Smallest Coupled Inductor with 2 kV isolation between the windings	View Details
WE-TDC HV	High Voltage	Low profile coupled inductor with 2 kV isolation	View Details
WE-DPC HV	High Voltage	WE-DPC HV SMD dual power choke	View Details
WE-MTCI	Various Turn Ratio	Smallest Coupled Inductor with different Turn Ratio and 0.8 kV isolation	View Details
WE-EHPI	Various Turn Ratio	Low profile, small footprint. Separated welding/soldering pad for a high reliable component	View Details
WE-TDC	Low Profile	Well suited for Non-Isolated flyback converters, buck or boost with auxiliary winding	View Details
WE-CFWI	High Current	High current coupled flatwire inductor	View Details
WE-DCT	High Saturation Current	The WE-DCT series is well suited for High Power switching regulators, and solar inverters	View Details
WE-DD	General Purpose Coupled Inductors	The WE-DD series is well suited for SEPIC and CUK topologies and flyback applications	View Details