NCP4307FASNT1G

NCP4307 is a secondary side synchronous rectification driver for high efficiency SMPS topologies. This high performance driver tailored to control a synchronous rectification MOSFET in switch mode power supplies. It can be used in various topologies such as DCM or CCM flyback, quasi resonant flyback and forward. Internal minimum off−time and on−time blanking periods help to fight the ringing induced by the PCB layout and other parasitic elements. A reliable and noise less operation of the SR system is ensured due to the self synchronization feature. This also utilizes Kelvin connection of the driver to the MOSFET to achieve high efficiency operation at full load and utilizes a light load detection architecture to achieve high efficiency at light load. Typical applications are notebook adapters, high power density AC/DC power supplies (cell phone chargers), LCD TVs, All SMPS with high efficiency requirements.

• Self−contained control of synchronous rectifier in CCM, DCM and QR for flyback applications
• Precise true secondary zero current detection, rugged current sense pin (up to 200V)
• Typically 15ns turn off delay from current sense input to driver
• Self−supply capability in case of high side operation or low VOUT
• Ultrafast turn−off trigger interface/disable input (10.5ns)
• Internal minimum ON−time with reverse current protection and OFF−time with ringing detection
• Improved robust self synchronization capability, 7A/2A peak current sink/source drive capability
• High side operation capability without external components or auxiliary winding
• Automatic light−load disable mode, low start-up and disable current consumption
• TSOP−6 package