Fairchild Semiconductor FOD3780 and FOD3181: Gate drivers switch MOSFET on and off to limit power dissipation

Driving 30A at 1200V in industrial applications, the high-frequency FOD3780 and FOD3181 MOSFET gate drivers provide 200-nsec maximum rise/fall times. The optically isolated devices quickly turn power MOSFET on and off to limit power dissipation. The FOD3180 has a 2A peak-output current, allowing you to drive MOSFETs without additional amplification. The devices target solar inverters, high-performance UPS (uninterruptible power supplies), dc/dc converters, and plasma-display panels. Additional features include a 5000V isolation rating that meets many safety-certification standards and an undervoltage lockout that protects the MOSFET by keeping it off until the voltage reaches the enabled state. Available in a DIP-8 package, the 2A FOD3180 and 0.5A FOD3181 cost $1.91 and $1.40, respectively.

Fairchild Semiconductor, www.fairchildsemi.com