Infineon unveils iSSI for faster switching with 70% less power dissipation

0
112

At the Applied  Power Electronics Conference (APEC), Infineon Technologies introduced a new product family of Solid-State Isolators (iSSI) to achieve faster and  more reliable circuit switching with protection features not available in optical-based solid  state relays (SSR). iSSI use coreless transformer technology and support 20 times greater  energy transfer with both current and temperature protection contributing to a higher reliability and lower cost of ownership. The new iSSI allow driving the gates of Infineon’s  MOS-controlled power transistors OptiMOS and CoolMOS to reduce power dissipation of up to 70 percent of todays’ solid-state relays using SCR (silicon-controlled rectifier) and  Triac switches.  

Infineon’s solid-state isolators enable custom solid-state relays capable of controlling loads  more than 1000 V and 100 A. Improved performance and reliability make coreless  transformer technology ideal for applications in advanced battery management, energy  storage, renewable energy systems, as well as industrial and building automation system  applications. With iSSI drivers, engineers can further improve the efficiency of electronic  and electromechanical systems.  

“Implementing coreless transformers in solid-state isolators and relays is truly a game changer for power engineers; it provides 50 times lower RDS(on) than existing optically  controlled solutions. This enables their use in higher-voltage and higher power  applications,” said Davide Giacomini, Marketing Director for the Green Industrial Power  Division at Infineon Technologies. 

When matched with Infineon’s CoolMOS S7 switch, the iSSI drivers enable switching  designs with a much lower resistance compared to optically driven solid-state solutions.  This translates to longer lifespans and lower cost of ownership in system designs. As with  all solid-state isolators, the devices also offer superior performance compared to  electromagnetic relays, including 40 percent lower turn-on power and increased reliability  due to elimination of moving parts.  

The family of devices is designed to be compatible with Infineon’s broad switching portfolio  including Infineon’s CoolMOS S7, OptiMOS and linear FET portfolios.