Fairchild Announces Green FPS™ Power Switch For Half-bridge Resonant Converters Up To 450W

Fairchild Semiconductor introduced a highly integrated Green FPS power switch, the FSFR2100, which is claimed to increase power efficiency and system reliability, and reduce design time in resonant converter designs such as telecom power, high end audio amplifiers, large size laser printers and LCD and PDP TV power supplies.

Offering a "system-in-a-package" approach that the company claims integrates everything necessary to build reliable and efficient resonant converters, this power switch integrates a pulse-frequency-modulation (PFM) controller with a high voltage gate driver circuit and two fast recovery MOSFETs (FRFET®) along with soft-start, burst operation and important protection features into a thermally-efficient 9-SIP package.

The FSFR2100 features a zero voltage switching (ZVS) technique that dramatically reduces switching losses in MOSFETs and rectifiers. With this technique, this FPS switch can handle up to 200W without a heat sink and up to 450W with a heat sink. According to Fairchild, compared to conventional hard-switch converter topologies, efficiency is improved by 10% and for applications such as PDP-TVs, efficiency reaches 97%. An additional advantage of this ZVS technique is that switching noise is dramatically reduced – at least 5dB compared to hard switching techniques. Offering burst operation function, the FSFR2100 brings standby power consumption below 1W to easily achieve the industry’s 1W Initiative.

The FSFR2100 is RoHS compliant, utilizes lead-free (Pb-free) terminals and has been characterized for moisture sensitivity in accordance with the Pb-free reflow requirements of the joint IPC/JEDEC standard J-STD-020.

The product is priced (each, 1000 pcs): at US$ 4.16 with a delivery time of 12 weeks ARO.