Extended temperature, mid-voltage MOSFETs operate at +175°C

17th March 2015

Nat Bowers

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Expanding the company's line of Extended Temperature (ET) mid-voltage MOSFETs, which can operate at +175°C, Fairchild has announced a family of 19 new devices. According to the manufacturer, the higher operating temperatures enable up to 85% greater power density and three times more reliability than MOSFETs rated to the +150°C industry standard.

This family of ET MOSFETs aligns with the IPC-9592 power conversion standard, which means that the maximum junction temperature can be up to 150°C, as opposed to +125°C for standard +150°C MOSFETs, to enable more design margin. The family includes 19 devices, available in both 5x6mm and 3x3mm standard packages, as well as the TO-Leadless (TO-LL) package. The devices are offered in a wide range of voltage ratings, including 30, 40, 60, 80, 100, 120 and 150V.

Their outstanding combination of superior heat tolerance, greater power density and improved reliability make Fairchild’s ET MOSFET family suited for for DC/DC power supplies, AC/DC power supplies and motor drives used in applications, including avionics, micro solar inverters, power tools and telecomms.

The ability to operate up to +175°C makes these ET MOSFETs particularly suited for products that must operate in high ambient temperatures, such as solar power and POE applications. Additionally, the substantially greater reliability of the devices is an advantage for products used in harsh environments, including avionics, railway and power tool applications.

Complementing the extended temperature range, the higher power density in very small packages is a key advantage as it gives manufacturers greater flexibility with their product designs. It allows designers to either decrease the form factors of their products, while maintaining the same power output, or to increase the power output without having to increase size.

Suman Narayan, Vice-President, iFET Product Line, Fairchild, commented: “As the latest additions to Fairchild’s comprehensive line of ET MOSFETs, this family gives designers greater ‘headroom’ for product designs that can, or must, cope with high temperatures without resorting to heat sinks or other approaches to dissipating heat that increase product cost and complexity. These devices continue the Fairchild tradition of offering designers solutions that provide significantly more design margin over competitive offerings.”

Fairchild is exhibiting in booth 905 at APEC 2015 (in Charlotte, North Carolina, 16th to 19th March), where technical experts are available to discuss and answer questions about the new ET mid-voltage MOSFETS and other energy efficient solutions.

Datasheets can be downloaded from here.