Method for reducing standby power consumption of power supply system and the power supply system

Abstract

The invention provides a method for reducing electric power source system stand-by power consumption and an electric power source system which are suitable for an electric power source circuit field. The method includes steps as follows: when a non-continuous stand-by detect and control circuit unit needs to monitor, detect or awake the system, existing or increased biasing current in the non-continuous stand-by and control circuit unit is controlled for monitoring, detecting or awaking the system; when the non-continuous stand-by detect and control circuit unit needs not to monitor, detect or awake the system, biasing current in the non-continuous stand-by detect and control unit is cut off or reduced. The method provided by the invention divides the stand-by mode detect and control circuit unit, and modulates stand-by power consumption of the non-continuous stand-by detect and control circuit unit that needs not to monitor, detect or awake the electric power source continuously, accordingly, average stand-by power consumption of the whole electric power source system is reduces, and working life of battery is prolonged or the product is energy saving.

Description

technical field [0001] The invention belongs to the field of power circuits, and in particular relates to a method for reducing standby power consumption of a power system and a power system. Background technique [0002] The function of the power supply system is to effectively control the input fluctuating voltage source and provide a regulated voltage source of predetermined size to the load. The power supply system can be one of switching power supply, linear regulator and charge pump or a combination of them Combination of power types. [0003] The conversion efficiency of the power system is a function of its load current. Generally speaking, under light load conditions, as the load current decreases, the power consumption of the power system itself accounts for an increasing proportion of the power consumption of the entire system, resulting in The conversion efficiency of the power system is getting lower and lower. Therefore, in order to reduce the power consumpti...

AI Technical Summary

Problems solved by technology

Although the bias current of some circuit units in the standby mode detection and control circuit 11 is reduced, after all, there is a non-negligible bias current throughout the standby time, which consumes power all the time.

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