FAN6861

Highly integrated PWM controller, FAN6861 isoptimized for applications with motor load; such asprinter and scanner, which inherently impose some kindof overload condition on the power supply duringacceleration mode. The two-level OCP function allowsthe SMPS to stably deliver peak power during the motoracceleration mode without causing premature shutdownand while protecting the SMPS from overload condition.

The green-mode and burst-mode functions with a lowoperating current (2.2mA maximum in green mode)maximize the light load efficiency so that the powersupply can meet most stringent standby powerregulations.

The frequency-hopping function helps reduce electromagneticinterference (EMI) of a power supply by spreading the energy over a wider frequency range.

The constant power limit function; minimizes thecomponents stress in abnormal condition and helpsdesigner to optimize the power stage more easily.

Many protection functions such; as OCP, OLP, OVPand OTP, are fully integrated into FAN6861, whichimproves the SMPS reliability without increasing thesystem cost.