Vishay Intertechnology, has introduced the VODA1275, an Automotive Grade photovoltaic MOSFET driver in a compact SMD-4 package. The device is the first in this package type to feature a creepage distance of 8 mm and a mold compound with a comparative tracking index (CTI) of 600. It is classified as providing reinforced isolation. The VODA1275 delivers an open circuit voltage of 20 V typical, a short circuit current of 20 μA, and a turn-on time of 80 μs. This turn-on time is three times faster than that of competing devices. The driver also has a working isolation voltage of 1260 Vpeak and an isolation test voltage of 5300 VRMS.
These specifications position the component for use in high voltage automotive systems, specifically 800 V+ battery systems. It is designed for pre-charge circuits, wall chargers, and battery management systems (BMS) in electric vehicles (EV) and hybrid electric vehicles (HEV).
The high open circuit output voltage allows designers to use a single MOSFET driver instead of two in series for applications requiring higher voltages, which reduces space requirements and component count. The device also supports the creation of custom solid-state relays as replacements for legacy electromechanical relays.
The optically isolated VODA1275 sources all current for its internal circuitry from an infrared emitter on the low voltage side of the isolation barrier, eliminating the need for an external power supply. It is AEC-Q102 qualified, RoHS-compliant, halogen-free, and Vishay Green.
Samples and production quantities of the VODA1275 are available now, with lead times of eight weeks.
