Photovoltaic MOSFET Driver With Integrated Fast Turn-Off, Solid-State Relay

Applications

• The VOM1271 is a stand-alone optically isolated MOSFET driver. Unlike conventional MOSFET drivers, which require an external power supply to provide VCC and or VDD rails to the driver itself, the VOM1271 obtains all the required current to drive its internal circuitry from the LED current on the low voltage primary side of the isolation barrier. This saves the designer the space and cost associated with providing one or more external power supplies. The VOM1271 also integrates a turn-off circuit internal to the component itself, thus doing away with the need for additional components in order to increase the overall switching speed by decreasing the turn-off time. These features, combined with a small SOP4 package, provide designers with a small footprint, highly integrated isolated gate driver solution for a large variety of MOSFET driver applications.
• Open circuit voltage at IF = 10 mA, 8.4 V typical
• Short circuit current at IF = 10 mA, 15 µA typical
• Isolation test voltage 3750 VRMS
• Logic compatible input
• High reliability
• Integrated rapid turn-off circuitry