New 800V SuperFET II MOSFETs deliver lowest on-resistance range

Fairchild has introduced the new 800V SuperFET II MOSFET family, featuring broad package offerings and the industry's lowest on-resistance (Rdson) and output capacitance (Coss). The new family enables designers to improve the efficiency, cost-effectiveness and reliability of high-performance solutions requiring breakdown voltage higher than 600V / 650V, and also reduces the board space of these designs by enabling the elimination of components. The best-in-class reliability of the 800V SuperFET II MOSFET family, coupled with its exceptional efficiency and thermal characteristics, makes it ideal for a variety of applications. Meanwhile, its broad range of package options gives designers tremendous flexibility, particularly with size constrained designs. Key applications for the family include LED lighting, power supplies for LED televisions and home theatre audio equipment, power adapters, servers, industrial power supplies and micro solar inverters, says the company. "Manufacturers can improve the efficiency and reliability of their products with Fairchild's new 800V SuperFET II MOSFET family, which is significantly more efficient than its closest competitor thanks to excellent switching performance and low specific resistance," said Wonhwa Lee, principal technical marketing engineer at Fairchild. "The new family uses the latest super-junction technology to enable a small form factor with higher efficiency than ever before and its robust built-in diode at high dv/dt conditions can improve the reliability of industrial bridge circuits." Fairchild's newest 800V SuperFET II MOSFET family is comprised of 26 devices covering a Rdson range of 4.3ohm to an industry low of 60mohm, offered in a wide range of standard package options, giving designers greater choice and flexibility in employing the best device for their specific application. For example, the FCD850N80Z, a key member of the family, combines an exceptionally low 850mohm Rdson(max) in DPAK with 6 - 11 percent lower Rdson (max) and 8 - 13 percent lower Coss (@400V) than its primary competitors, making it ideal for LED lighting applications which require low resistance and are size constrained, says the company.