Apraksts

• 1．Overview
• This document describes the design example of flyback converter using the green mode PWM IC FA8A00N series.
• The input is universal (90Vac to 264Vac) and the output is 19V/65W.
• This IC can improve efficiency of middle load to reduce the switching frequency according to the load. Furthermore, it can
• realize low standby power to change the burst mode switching at the light load.
• 2．Features
• Low standby power
•  Built-in discharge function for X-Capacitor
•  (Reduce loss of the discharge resistor)
•  Low operating current
• (During normal operation Ivccop1=450uA typ.)
•  Reduce of switching frequency at middle load
•  Burst mode at light load
•  Built-in 500V high voltage startup circuit.
• Various Protection
•  Two-stages Over Load Protection.(Delay time Tdlyolp=70msec typ.)
•  Built-in OLP line compensation
•  Short Circuit Protection for secondary side
•  Latch stop function by pull-up/pull-down of LAT pin.
•  Over-Voltage Protection (Vthovp=25.5V typ.)
•  Under-Voltage Protection (Vvccoff=6.5V typ.)
•  Brown-IN/OUT Function
•  Soft-Start function (Tss=11msec typ.)
•  Built-in Minimum ON width function
• Low EMI by Frequency diffusion function
• Drive circuit for MOSFET : -0.5A(sink)/0.5A(source)

Parametri

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