Coreless solid state isolators cut power by 70 percent

Coreless solid state isolators cut power by 70 percent

Technology News |
By Nick Flaherty

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Infineon Technologies has developed a family of Solid-State Isolators with faster and more reliable circuit switching and 70% less power consumption.

The Infineon solid state isolator range uses 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. This allows driving the gates of Infineon’s MOS-controlled power transistors OptiMOS and CoolMOS to reduce power dissipation of up to 70 percent compared to solid-state relays using silicon-controlled rectifier (SCR) and Triac switches.

The solid state isolators also enable custom solid-state relays capable of controlling loads more than 1000 V and 100 A for battery management, energy storage, renewable energy systems, as well as industrial and building automation system applications.

“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 isolator 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.


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