Fast Semiconductor's high-side and low-side synchronous rectifier controllers provide flexibility and efficiency

Given the tightening of global energy regulations, achieving higher efficiency in the design of more complex AC-DC applications (such as desktop computers, servers, and workstations) is challenging. Generally, the use of synchronous rectification (SR) controllers can achieve higher efficiency, but this method will cause high standby power consumption and design complexity. To assist designers in meeting stringent energy regulations, Fairchild Semiconductor has developed FAN6224 secondary-side synchronous rectification (SR) controllers that can provide design flexibility and improve overall system efficiency.

FAN6224 is the first high-side and low-side SR controller of the fast semiconductor mWSaver technology series. The device is equipped with an internally adjusted load-level energy-saving mode (Green Mode), which can stop all SR switching operations at no-load and reduce no-load power consumption.

In addition, the linear-predict TIming-control technology is used, and the simple noise control method without current sensing circuit is used to achieve noise immunity, so it is very suitable for continuous or discontinuous conduction mode (CCM and DCM) , And high-side and low-side flyback converters for quasi-resonant (QR) systems. In order to achieve maximum design flexibility, FAN6224 provides PWM frequency tracking function and secondary side winding voltage, and can operate in fixed and variable frequency systems up to 140kHz.

Features and advantages:

• 300µA ultra-low energy-saving mode operating current

• 12V gate driver clamp

• Integrate multiple protection functions: OVP, OTP, SCP

• Open / short protection of LPC pin and RES pin

• FAN6224 is available in SO 8L NB package and the price is USD 0.71.

FAN6224, coupled with the fast semiconductor company's mWSaver technology PWM controller, can provide the best standby power consumption and excellent system efficiency at the same level. All components belonging to the mWSaver technology series are the most efficient process and circuit technology designed by the company for power converters.

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