Patent ID: 7205753

Claim:
A switching power supply system for automatically regulating circuit operating power of a converter and controlling switching of said converter through a PWM control circuit to supply a DC power to a computer system, comprising: a sensing and monitoring unit connected to said computer system for detecting an operating status of said computer system and outputting a detection value; a setting unit for setting trigger condition value to regulate the circuit operating power; a storage unit connected to said setting unit for storing said trigger condition value; a comparator unit connected to said storage unit and to said sensing and monitoring unit for comparing said detection value with said trigger condition value and outputting a comparison result signal; and a dual power system switching regulator unit connected to said comparator unit and connected to said converter through at least one dual power system unit, said dual power system switching regulator unit receiving said comparison result signal and regulating said dual power system unit to be connected to or disconnected from said converter based on said comparison result signal.