Fairchild Semiconductor Developed the FAN6756 PWM Controller

Published:2011/11/22 1:08:00 Author:Phyllis From:SeekIC

Fairchild Semiconductor, a leading global supplier of high-performance power and mobile products, developed the FAN6756 PWM controller featuring mWSaver™ technology that enables the reduction of standby power loss in the external circuit without using additional support ICs.

The single-chip FAN6756, a highly integrated green-mode PWM controller which is capable of significantly reducing standby losses in SMPS designs and eliminating up to 15 external components, is the next-generation Green Mode PWM controller. The device achieves greater power savings and can save the designer up to $.30 in bill of material (BOM) costs compared to the current competitive IC solutions.

Standby power requirements in devices like notebooks, printers, LCD TVs and monitors become less and less, in some applications even below 50mW. To meet these stringent regulations today, additional circuitry or control devices are needed to remove the power loss, resulting in a much higher BOM cost and a more complex circuit design. That the reason why Fairchild Semiconductor developed the FAN6756.

The FAN6756 is an Ideal for power supplies that demand extremely low standby power, including adapters for notebooks, printers and game consoles, as well as open-frame SMPS for LCD TVs, LCD monitors and printer power with its incorporated mWSaver technology, which including a proprietary Deep Burst Mode technology that reduces switching loss at no-load and light-load conditions. mWSaver technology allows the device to reduce power losses not only in the controller itself, but also in the external circuits and components.

The FAN6756 also includes an innovative AX-CAP™ discharge method that minimizes losses in the EMI filter stage by eliminating the X-cap discharge resistors and discharging X-cap energy through the HV pin when the power is unplugged from the AC outlet while still meeting the IEC61010-1 safety requirement. The device also incorporates robust protection features – including Fairchild’s proprietary Sense Resistor Short-Circuit Protection (SSCP), which shuts down the PWM output to prevent system damage when the sense resistor is shorted - providing for a safe and reliable solution.

The FAN6756, available in an 8-pin SOP package, is part of a comprehensive portfolio of power products designed to improve no-load power consumption as well as to meet stringent energy efficiency standards, reduce component count and simplify design in today’s electronics. Fairchild Semiconductor’s mWSaver technology offers best-in-class minimum no-load and light-load power consumption to meet current and proposed worldwide standards and regulations and enables designers to achieve reduced form factors, improved reliability and lower system costs.

Fairchild Semiconductor International, Inc. designs, develops, manufactures, and sells power analog, power discrete, and non-power semiconductor solutions worldwide. The company operates through three segments: Mobile, Computing, Consumer, and Communication (MCCC); Power Conversion, Industrial, and Automotive (PCIA); and Standard Discrete and Standard Linear (SDT). The company’ products are used in computers and Internet hardware; communications; networking and storage equipment; industrial power supply and instrumentation equipment; consumer electronics, such as digital cameras, displays, audio/video devices, and household appliances; and automotive applications.

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