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Noctua NE-FD1 PWM IC

Noctua’s custom-designed NE-FD1 is a next-generation PWM fan driver IC that integrates Smooth Commutation Drive (SCD) technology for quieter operation and allows for ultra-low power consumption. Its superb linearity and security features such as locked rotor or reverse voltage protection make it an ideal driver IC for premium-class PWM fans.

PWM Output Signals Compared


Most conventional PWM fan driver ICs put out square signals that cause sudden torque impulses. These impulses can cause minute deformations of the entire fan structure which lead to audible “clicking” noises that are especially noticeable with many common PWM fans running at slower speeds. Adopting Noctua’s Smooth Commutation Drive (SCD) technology, the custom designed NE-FD1 PWM IC slows down the slew rate of the output signal in order to give a smoother, less sudden torque impulse. This way, PWM switching noises can be effectively suppressed and the fan runs even quieter, especially at low speeds.

Noctua’s NE-FD1 IC was not only fine-tuned for superior quietness, it has also been carefully optimised to allow for ultra-low power consumption. For example, the NE-FD1 based PWM version of the award-winning NF-R8, NF-B9 and NF-P12 fans consume 25-40% less power than their non-PWM counterparts. The NF-F12 120mm fan featuring the NE-FD1 IC draws only 0.6W, which is more than 50% less than many fans in the same speed range. This doesn’t only make it eco-friendly but also cuts down the electricity bill: Compared to a typical 2W fan, this allows you to save about half the price of the NF-F12 after 5 years of continuous use.


Noctua
27.11.2014 - mod-your-case.de NH-U9S
Test verdict: "Mit dem NH-U9S hat Noctua wieder einmal gezeigt, dass man ein gutes Produkt mit viel Entwicklungsarbeit noch besser machen kann. Dies bezieht sich nicht nur auf die Kühlleistung des neuen NH-U9S, sondern auch auf die Kompatibilität." (Patrick Seus, mod-your-case.de)
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27.11.2014 - DVTests.com NF-P14s redux-1500 PWM
Test verdict: "After I spent some time having fun with the biggest fans included in the series I can say that I am really impressed to see the classic NF-P14 revived in the shape of two brand new, much cheaper versions with absolutely renewed appearance and much better performance." (Dobrin Krastev, DVTests.com)
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26.11.2014 - ZeDen.net NH-D15
Test verdict: "Au final, le bilan de ce ventirad est vraiment très bon. Les améliorations apportées par Noctua à son produit phare, le NH-D14, nous ont vraiment convaincues. Le NH-D15 est bel et bien le meilleur ventirad de la marque, notamment grâce à ses nouveaux ventilateurs et à son design de radiateur revu pour une meilleure comptabilité. Bien sûr, ce niveau de qualité a un prix, mais il ne faut pas oublier que si cette solution haut de gamme - modulaire et adaptables à presque tous les sockets - peut paraitre chère, elle peut rivaliser avec les watercooling AIO les plus récents !" (Pierre-Alexis Passelande, ZeDen.net)
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