30 Jun '17, 11pm

New Extra Fast Soft Recovery Diodes #EEWeb

New Extra Fast Soft Recovery Diodes #EEWeb

With their outstanding reverse recovery characteristics, the new extra fast recovery diodes can be applied in many fields. One of their major applications is to function as freewheeling diodes in single- or three-phase press pack IGBT inverters. Figure 1 demonstrates the new extra fast soft recovery diodes used as anti-parallel freewheeling diodes with press-pack IGBT s in a three-phase inverter stack working for induction heater, adjustable speed motor driving and votlage supply on the primary side of a transformer. A higher reverse recovery di/dt and a low Irm on the free-wheeling diodes will help reduce the commutation energy losses both on the diodes and the press-pack IGBT s, and enable an inverter to work at high operating frequency. The advantage of the new diodes appears to be more appreciable when used in PWM inverter, in which the current commutation frequency be...

Full article: https://www.eeweb.com/company-blog/ixys/new-extra-fast-so...

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