Hyper-fast rectifier offers 600V 8A performance for PFC / CCM applications

Designed specifically for use as a boost diode for power-factor correction (PFC) and continuous conduction mode (CCM) applications, Diodes Incorporated has introduced the DSR8F600 600V 8A hyper-fast rectifier. The device's target market is in switched-mode power supplies (SMPS) that need to deliver a high 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. 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. Aimed at designers of PFC circuits who need to achieve the lowest possible energy losses, the TO220AC packaged DSR8F600 provides best-in-class performance, generating the least noise and achieving the highest power efficiency. The DSR8F600 is the first of a family of hyper-fast rectifiers; future introductions will provide even higher voltages and currents, says the company.