Power Electronics

SSRs Drive MOSFETs and SCRs

Vishay Intertechnology’s VO1263AB solid state relay (SSR), dual photovoltaic MOSFET driver offers a combination of high open-circuit voltage and short-circuit current. When coupled with external MOSFETs, the driver provides longer product life, higher reliability, and faster switching compared to equivalent electromechanical relay designs.



The VO1263AB is optimized for MOSFET and SCR gate-drive applications in end products, including isolated medical equipment. Applications for the new device will include high-side switches, solid-state relays, floating power supplies, and isolation amplifiers.



The driver features an open circuit voltage up to 14.6 V typical, and a short-circuit current up to 42 µA typical. This allows designers to choose from a wider range of low-voltage MOSFETs and decreases the time required to charge the MOSFET’s gate.



Housed in an 8-pin DIP with lead-free terminations, the VO1263AB consists of two LEDs optically coupled to two photodiode arrays that provide a floating source with adequate voltage and current to drive a variety of low-voltage MOSFETs. Optical coupling provides an isolation voltage of 5300 V.



Samples of the new VO1263AB are available now, with production quantities scheduled for February. SMD versions of the same device are also available. Pricing for 10000-piece quantities starts at $1.51 each.


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