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Power Electronics Europe News
DC/DC converters provide output for SiC gate drivers

SiC MOSFETs are increasingly used to boost efficiency and reliability as the inverters of wind turbine or solar power conditioning systems, as well as variable-speed motor drives in appliances and machine tools.


The Recom RxxP21503D DC/DC converters are now in stock at Dengrove. They provide the asymmetric output voltages needed by gate drivers to generate the correct turn-on/turn-off signals for robust and energy-efficient SiC power switches. They also have high isolation of 6.4kV DC, with low isolation capacitance, to maintain performance and safety when exposed to the fast switching transients and elevated operating temperatures encountered in systems designed with SiC devices.


Available in a compact SIP7 package, the converters complement SiC’s ability to shrink circuit footprint by producing small-size transistors with high breakdown voltage and low on-resistance. There are three models, R12P21503D, R15P21503D and R24P21503D, available, to operate from a 12, 15 or 24V supply, and output 15 and -3.0V for powering gate drivers. Automatic power sharing allows use with equal-power (1.0 1.0W) or equal-current (1.6 0.4W) driver types.


Built to withstand the high stresses experienced in SiC-based circuits, the converters can be ordered with optional continuous short-circuit protection. They feature a pot-core transformer that enhances electromagnetic shielding of the windings. All units are covered by Recom’s three-year manufacturer warranty.



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