Build Resonant Converters Faster With Fully-Integrated System-in-Package

Efficient and reliable resonant converters are easier to design using the FSFR2100 Fairchild Power Switch (FPS™), which provides all the necessary components in a single 9-pin system-in-package.

The FSFR2100 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. TheMOSFET fast-recovery capability allows the FPS to withstand abnormal operating conditions, andminimises the effect of reverse recovery on converter performance.

By using Zero-Voltage Switching (ZVS) to minimise MOSFET switching losses, the FSFR2100 can operate up to 200W without a heatsink and up to 450W with a heatsink. Compared to conventional hard-switched converter topologies, ZVS with the FSFR2100 is 10% more efficient. For applications such as PDP-TVs, efficiency reaches 97%. An additional advantage of ZVS is that switching noise is dramatically reduced, by at least 5dB compared to hard-switching techniques.

Low standby power is a further advantage of the FSFR2100, using burst operation to keep consumption below 1W and so help to meet the International Energy Authority’s 1-Watt Initiative.

With the addition of the FSFR2100 to Fairchild’s wide portfolio of power switches, designers can now choose integrated power solutions from 1W to 450W to create energy and space-efficient SMPS designs for a wide variety of applications.

 

FEATURES Built-in high-side drive circuit Common-mode noise cancellation External Control pin for remote on/off Pre-optimised dead time Operating frequency selectable up to 300kHz

APPLICATIONS High-voltage power supplies Telecom systems Servers Audio power supplies

 

 

 

The FEB212 evaluation board is available to members of the Future Board Club. To apply for the development board, and membership of the Board Club, go to www.my-boardclub.com/manf-offers.htm This offer is free and subject to qualification.

 

Fairchild Semiconductor / FSFR2100