The DSR8F600 600V 8A hyper-fast rectifier introduced by Diodes Incorporated has been designed specifically for use as a boost diode for power-factor correction (PFC) and continuous conduction mode (CCM) applications. The target market is in switched-mode power supplies that need to deliver an output greater than 75W in end-equipment such as flat-panel TVs, servers and telecoms systems, where new regulatory standards in Europe, the USA, Japan and China require improved energy efficiency.
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A hyper-fast 20ns reverse-recovery time reduces PFC MOSFET switching losses, increases switching speed and improves energy efficiency, while a very fast soft recovery capability ensures ringing and EMI interference are reduced. Boost diode recovery losses are minimized by a low 3.9A reverse-recovery current, which also reduces power dissipation in the MOSFET and lowers the risk of system failure. A low 1.95V forward voltage drop also minimizes boost diode conduction losses.
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