Fairchild Semiconductor’s High- and Low-Side SR Controller Provides Design Flexibility and Better Efficiency in AC-DC

  Fairchild Semiconductor’s High- and Low-Side SR Controller Provides Design
  Flexibility and Better Efficiency in AC-DC Applications

Integrated Green Mode Operation Reduces Power Consumption in Multiple Flyback
         Converter Systems to Help Designers Meet Energy Regulations

Business Wire

SAN JOSE, Calif. -- November 28, 2012

As global energy regulations become more stringent, achieving higher
efficiency in complex AC-DC designs – such as desktop PCs, servers and
workstations – can be challenging. Typically, synchronous rectifier (SR)
controllers are used to gain higher efficiency, but this method can result in
high standby power consumption and design complexity.

To help designers meet strict energy regulations, Fairchild Semiconductor
(NYSE: FCS) has developed the FAN6224 secondary-side synchronous rectifier
(SR) controller to provide design flexibility and improve overall system

The FAN6224 is the first SR high- and low-side controller device in
Fairchild’s mWSaver™ technology series. Equipped with an internal, adjustable
load-level Green Mode operation, the device stops all SR switching operation
and provides lower no-load power consumption.

Utilizing a linear-predict timing-control technique, the device employs a
simple control method without current-sense circuitry for noise immunity,
making it ideally suited for high- and low-side flyback converters in
continuous or discontinuous conduction mode (CCM and DCM) and quasi-resonant
(QR) systems. For maximum design flexibility, the FAN6224 provides PWM
frequency tracking and secondary-side winding voltage and is able to operate
in both fixed- and variable-frequency systems up to 140kHz.

Features and Benefits:

  *300µA ultra-low Green Mode operating current
  *12V gate driver clamp
  *Integration of rich protections: OVP, OTP, SCP
  *Open/short protection of LPC-pin and RES-pin

Packaging and Pricing Information (in US 1,000 quantity pieces)
Samples available upon request - Delivery 8-12 weeks ARO

  *Available in a SO 8L NB package the FAN6224 is priced at $.71

Paired with Fairchild’s mWSaver technology PWM controllers, the FAN6224 can
provide best-in-class standby power consumption and excellent system
efficiency. All devices are part of the mWSaver technology portfolio that
combines the company’s most efficient process and circuit technologies for
power adapter designs.

Fairchild Semiconductor: Solutions for Your Success™

Contact Information:

To contact Fairchild Semiconductor about this product, please go to:

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, please go to:


About Fairchild Semiconductor:

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Fairchild Semiconductor
Paul R. Hughes, +1 800-341-0392 X 3110
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