Fairchild Semiconductor’s Resonant Controller Simplifies Power Design for Applications up to 600W
April 28 2009 - 12:30PM
Business Wire
Fairchild Semiconductor (NYSE: FCS) brings power designers of
LCD and PDP TVs, servers, game consoles and LED lighting
applications the FAN7621. This resonant controller simplifies
design, reduces bill of materials and provides advanced protection
functions. The FAN7621 integrates a high-side gate-drive circuit, a
current-controlled oscillator, frequency- limit circuit, soft start
and numerous protection functions in a 16-pin SOP/DIP package. This
highly integrated device eliminates the need for expensive external
circuitry such as pulse transformers to conserve not only board
space but to reduce the cost of the overall design. The FAN7621�s
internal high side gate-drive circuit offers an added benefit of
common-mode noise cancellation, ensuring excellent noise immunity,
enabling the application to meet stringent EMI specifications. For
further noise immunity, the FAN7621 offers designers a zero voltage
switching (ZVS) technique that reduces switching noise and allows
the use of a smaller and less expensive EMI filter.
The FAN7621 is designed with robust protection features such as
over voltage protection (OVP), over current protection (OCP),
abnormal over current protection (AOCP) and internal thermal
shutdown. Other solutions require additional components to achieve
the same level of protection, which adds to design time and overall
system costs.
The FAN7621�s ZVS technique dramatically reduces switching
losses in MOSFETs and rectifiers. Compared to conventional
hard-switching converter topologies, efficiency is improved by 10
percent and for applications such as PDP-TVs, efficiency reaches 97
percent. An added advantage of this ZVS technique is the dramatic
reduction in switching noise � at least 5dB � compared to
hard-switching techniques.
Price (each, 1000pcs): $0.50
Availability: Samples available now
Delivery: 12 weeks ARO
Contact Information:
To contact Fairchild Semiconductor about this product, please go
to: http://www.fairchildsemi.com/cf/sales_contacts/.
For information on other products, design tools and sales
contacts, please visit: http://www.fairchildsemi.com.
Note to Editor: For a datasheet in PDF format and other
useful information, please go to:
http://www.fairchildsemi.com/ds/FA/FAN7621.pdf
http://www.fairchildsemi.com/products/analog/fps.html
About Fairchild Semiconductor:
Fairchild Semiconductor (NYSE: FCS) is a global leader
delivering energy-efficient power analog and power discrete
solutions. Fairchild is The Power Franchise�, providing
leading-edge silicon and packaging technologies, manufacturing
strength and system expertise for consumer, communications,
industrial, mobile, computing and automotive systems. An
application-driven, solution-based semiconductor supplier,
Fairchild provides online design tools and design centers worldwide
as part of its comprehensive Global Power ResourceSM. Please
contact us on the web at www.fairchildsemi.com.
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