DC/DC converter powers gate drives for optimal efficiency

Suited for driving high and low-side gate circuits such as those using IGBTs and SiC MOSFETs for optimal efficiency, a series of 1W DC/DC converter series has been announced by Murata Power Solutions. The compact MGJ1 series features high isolation characteristics, up to 5.2kVDC, popular nominal output voltage combinations of +15 / -5, +15 / -9 or +19 / -5VDC. The series also offers a choice of +5, +12 or +24VDC input.

The MGJ1 series is characterised for high dV/dt immunity, which aids reliable and continued operation in fast switching circuits and partial discharge performance that contributes to a long service life. Also, the converter’s low input-to-output coupling capacitance, typically 5pF, assists in reducing the affects of EMI.

The series suits a broad range of medical applications for which certification to ANSI/AAMI ES60601-1 to 2xMOOP is pending. The converter also conforms to the UL 60950 (pending) for reinforced insulation and by incorporating a 9.3mm creepage and clearance space helps safety agency approvals for high working voltage applications.

Ann-Marie Bayliss, product manager, Murata Power Solutions commented: “The MGJ1 provides optimised voltages for powering gate drives for best system performance and efficiency. It also has high isolation and a characterised partial discharge performance and dV/dt immunity.”

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