Equipment ultra-low power consumption circuit system

Abstract

The utility model provides an equipment ultra-low power consumption circuit system, which comprises a power supply protection unit, a main power supply conversion unit and a multi-mode power supply unit, the power supply protection unit ensures the stability and reliability of the whole power supply system; the main power supply conversion unit is composed of a first-stage DCDC isolation power supply and a main PMU chip, static power consumption can be greatly reduced, a traditional three-stage power supply conversion topology is simplified into a two-stage power supply conversion topology, a two-stage power supply conversion chip is omitted, conversion levels are reduced, and the working efficiency of the whole power supply system is effectively improved. The multi-mode power supply unit comprises an LDO chip and a DCDC chip, enabling pins of the DCDC chip and the LDO chip are connected with the main control processor, selective power supply is carried out according to the working state of the peripheral equipment, enabling of the chips is closed when the peripheral equipment is not used, and power consumption of the equipment in a low-load mode is effectively reduced.

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