Vishay Introduces New Resonant Transformer/Inductor

Vishay Intertechnology, Inc. introduces the MRTI5R5EZ, a new resonant transformer in a monobloc package for inductor-inductor-capacitor applications, transformers, and integrated inductors.5.5 kW Vishay Custom Magnetics MRTI5R5EZ saves PCB space while simplifying layouts and reducing the number of required mounting devices, fully adjustable magnetization and leakage inductance, and low parasitic parameters.

The device released today is the first transformer to utilize an auxiliary intermediate transformer branch to form the resonant inductive portion of the circuit. Other devices require additional cores to achieve the same function. This unique structure saves space and simplifies design by requiring no interconnects or jumpers between the resonant inductor and the transformer windings.

The MRTI5R5EZ is suitable for on-board chargers and half-bridge/full-bridge resonant power transformers for industrial controls, solar inverters, defense, avionics, and construction equipment. In addition to tailoring the turns ratio for these applications, transformer losses can be shifted from core to coil as needed for superior performance and heat dissipation, while excellent parasitic parameters optimize capacitor selection.

The devices operate at frequencies from 100 kHz to 350 kHz, with power ratings from 4 kW to 6 kW, input voltages from 400 V to 800 V, and rated currents up to 28 A. The MRTI5R5EZ has a rated insulation voltage of 2500 V. The transformer includes a bracket for cold plate mounting, with options for raised or flush mounting. The standard connector of the transformer is M4 ring connector, the lead length and connector type can be customized, and the thermal pad for the fixed surface of the device is provided.

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