ME8411 Series_E3.0微盟原厂规格书.pdf

ME8411 Secondary Side Synchronous Rectification Switcher ME8411 Description Features ME8411 is a secondary side synchronous ●Synchronous rectification for DCM and QR rectification switcher, which combines an N MOSFET mode flyback and a driver circuit. The synchronous rectification(SR), ●Internal Start-up/Shut-down delay which which instead of traditional freewheeling diode can eliminate the interference of resonant ring effectively reduce secondary side power dissipation and ●Internal 5.45V voltage clamp pull-down 5 provide high performance solution. ME8411 controls function to prevent overshoot voltage in light 0 on/off of SR-MOS Gate, by detecting the drain voltage of load condition 3 3 SR-MOS internally. ME8411 is available for DCM and ●Internal over-voltage protection ， strong 1 5 QR mode flyback system. 3 pull-down function works when system output ME8411 can detect output voltage. When the output voltage over 6V 2 8 voltage is above 3V, the chip starts to work; when the ● 3V Start-up voltage 3 1 voltage is above 5.45V, the chip will generate 3mA ● 2.9V Under-voltage lock out : L pull-down current to prevent the output voltage goes up ●Programmable minimum on-time, providing L A in light load condition; when detecting the voltage hig