Power Integrations has introduced the Qspeed family of advanced diodes based on a unique silicon-based process to combine very low reverse recovery charge (QRR) with a very soft recovery waveform. The components are best suited for continuous conduction mode (CCM) boost power factor correction (PFC) circuits, and as output diodes for hard-switching applications.
Qspeed 600 V diodes are available in three families. The X series is optimised for cost-effective high efficiency at switching frequencies below 80 kHz, while the Q and H series are designed for use above 80 kHz. The Q series has the highest softness, giving the best EMI performance. The H series has the lowest forward drop and QRR, providing the highest efficiency. In addition to the 600 V products, Qspeed 300 V diodes provide efficient switching for output rectification and audio applications.
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