Recently, Vishay Intertechnology, Inc. announced that it has introduced a new series of small gate drive transformers, MGDT, which can save significant space in high-power defense and aerospace, industrial and medical applications. Vishay Custom Magnetics' MGDT series devices are available in a small 20.57mm x 18.42mm planar package with a height of 11.43mm, low loss, minimum creepage and clearance of 8mm.
The device is released with surface mount or via termination and multiple turns ratios to drive high-side MOSFETs and IGBTs on the 1200V bus. Compared to conventional bobbin and ring winding technologies, this transformer's planar package has a 40% footprint and 30% lower height and meets or exceeds most safety regulations. In addition, the surface mount MGDT series devices are the smallest in the industry with a creepage and clearance of 8mm.
The transformer operates from 100kHz to 500kHz and is suitable for isolated half-bridge, full-bridge and dual-tube active forward power converters. The MGDT series transformers have a drive-to-gate insulation strength of 3,750 VAC and a leakage inductance of 0.5 μH, which can operate continuously over the -40 ° C to +85 ° C temperature range. The device features tight cell-to-cell consistency and excellent rise time characteristics.
Samples are available for the new transformers and are in volume production. The lead time for major orders is eight to ten weeks.
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