Würth Elektronik SiC MOSFET gate drivers transformers

27th October 2023
Harry Fowle

Würth Elektronik has presented new additions to the WE-AGDT series, with interwinding capacitance lower than 1 picofarad, more topologies and higher output voltage options.

All transformers use the same compact SMT EP7 package with 11.3 x 10.95 x 11.94mm dimensions.

The WE-AGDT series is an Auxiliary Gate Drive Transformer series for up to 6 W isolated auxiliary supplies targeting gate driver systems for SiC-MOSFETs and IGBTs. In these designs, the most crucial aspect is the transformer interwinding capacitance due to the high dV/dt, which is common in designs utilizing Wide-Bandgap Devices. The new additions to this series feature interwinding capacitance is as low as 0.68 pF and output voltages as high as 30 V. Options now include LLC, Half-Bridge, or Flyback topologies and one or two outputs which can be used in either unipolar or bipolar applications.

WE-AGDT complies with the IEC62368-1/IEC61558-2-16 safety standard and is AEC-Q200 qualified. The transformers are suitable for use in industrial drives, AC motor inverters, HEV/EV charging stations, solar inverters, uninterruptible power supply devices and active power factor correction.

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