New photovoltaic MOSFET drivers provide industry-leading performance

Rutronik offers the new VOMDA1271 optocoupler from Vishay. The AEC-Q102-qualified driver incorporates high performance with greater design flexibility and lower costs and is the first device of its kind to be developed with an integrated cut-off for the automotive industry, among others. It delivers the industry's fastest switching times and the highest open-circuit voltage. The component is provided in a space-saving SOP-4 housing.

At 0.05ms, the switch-on time is approximately twice as fast as components from other manufacturers. At typically 80μs, the integrated turn-off circuit supplies the fastest turn-off time for a MOSFET driver in the compact SOP-4 format. The photovoltaic MOSFET driver is also the only one of its kind in this package size, with an isolation voltage of 3.75V and a typical open-circuit output voltage of 8.5V.

The optically isolated device is equipped with an AIGaAs IRLED whose light is absorbed by a photovoltaic gate array and thus generates the voltage to switch on a MOSFET. This design eradicates the necessity for an external power supply and lowers costs through the simplified design. For even more design flexibility, the driver can be controlled through the GPIO pin of a microcontroller. It is halogen-free, RoHS-compliant, and intended for use in pre-charging circuits, wall chargers, and BMS for EV and HEV.