Dynamic mult-functional power controller

A dynamic multi-functional power controller for performing a power control process to generate and send a Pulse Width Modulation (PWM) driving signal for driving a switching unit connected to the dynamic multi-functional power controller, a primary side coil, the switching unit, and a current sensing resistor being sequentially connected in series between an input power and a ground level, a conduction current flowing through the primary side coil employed to induce an induced current flowing through a secondary side coil coupled with the primary side coil due to electromagnetic interaction, the induced current flowing through an output rectification unit and an output filter unit connected in series, the output rectification unit and the output filter unit generating an output power to supply an external load, two ends of the current sensing resistor generating a current sensing voltage resulting from the conduction current, the power control process comprising:

• a starting step, in which a system comprising the dynamic multi-functional power controller, the switching unit, the primary side coil, the secondary side coil, the switching unit, the current sensing resistor-, the output rectification unit, and the output filter unit is powered on, and an auto recovery number is set to zero;
• a signal generating step, in which the PWM driving signal is generated and sent to the switching unit to conduct or cut off the conduction current of the switching unit;
• a detection step, in which a comparison voltage corresponding to the output power is employed to detect any abnormal state which occurs when the comparison voltage is greater than a threshold voltage;
• in case of no abnormal state, the power control process returning back to the signal generating step to continuously send the PWM driving signal;
• if an abnormal state occurs, an auto recovery step being performed, the PWM driving signal being not generated, the power control process waiting for a period of waiting time, then the PWM driving signal being regenerated and re-sent to perform an auto recovery operation, and the power control process increasing the auto recovery number by one,
• employing the comparison voltage to determine whether the abnormal state is resolved;
• if the abnormal state is resolved, the auto recovery number being set to zero, and the power control process returning back to the signal generating step;
• if the abnormal state is not resolved, the power control process determining whether the auto recovery number reaching a preset auto recovery number;
• if the auto recovery number does not reach the preset auto recovery number, the power control process returning back to the auto recovery step;
• if the auto recovery number reaches the preset auto recovery number, the power control process entering an Under voltage-Lockout (UVLO) state;
• and
• ending the power control process;
• wherein the comparison voltage is calculated by the dynamic multi-functional power controller employing the current sensing voltage and the input power.