Diodes have ultrafast powers of recovery

A new family of ultrafast-recovery diodes is ideally suited for power applications from medium to high switching frequencies and high rates of change of current.

Ixys Corp has developed a new generation of ultrafast recovery diodes called Sonic-FRD (DH-series).

The diodes of the Sonic-FRD family have a VRRM rating from 600 to 1800V with different current values.

The first products with this new fast recovery design are available in TO-247 packages.

The Sonic-FRD diode is ideally suited for power applications from medium to high switching frequencies and high rates of change of current (di/dt), especially hard switching, free wheeling and boost configurations, such as in uninterruptible power supplies (UPS), AC inverters using IGBTs, switch mode power supplies (SMPS) and power factor correction (PFC) circuits.

All these applications will benefit from the optimised characteristics of reduced reverse recovery current (IRR) and charge (QRR) as well as a soft recovery with short tail currents that results in reducing the losses in switching transistors, minimising EMI noise and the need for additional snubber circuitry.

Sonic-FRD rectifiers provide high efficiency and high power density at lower cost.

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