Power Electronics / Power Management


Ultrafast recovery diodes for 600 to 1800 V

20 February 2008 Power Electronics / Power Management

Ixys has expanded its new generation of ultrafast recovery diodes called the Sonic-FRD family. These new products utilise proprietary and advanced processing technology to provide fast switching speeds, with low forward voltage drop for 600, 1200 and 1800 V ratings.

The Sonic-FRD family is suited to power applications with high switching frequencies - in the 20 to 200 kHz range - and especially in boost and free-wheeling configurations, such as in power factor correction circuits and switch-mode power supplies. All of these will benefit from the optimised characteristics of small reverse recovery current and small stored charge, as well as a soft recovery. The results are reduced energy losses for the diode as well as for the switching transistor in the power circuit. An added benefit of the soft recovery of these diodes in turn-off is the minimised EMI noise they generate in switching and the elimination of the need to add costly snubber circuitry for the switching transistors.

The diodes have a reverse recovery rating from 600 to 1800 V with current values from 5 up to 60 A.



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