Intelligent scheduling high-efficiency power manager and control method thereof

Abstract

The invention relates to an intelligent scheduling high-efficiency power manager and a control method thereof. The intelligent scheduling high-efficiency power manager comprises a starting module, a switch capacitive type voltage stabilizer module and an LDO (low dropout regulator) module which are mutually connected; the starting module comprises a counter, a power-on reset circuit, a low-voltageoscillator, and a finite state machine; the finite state machine and the switch capacitive type voltage stabilizer module are connected with the LDO module; the switch capacitive type voltage stabilizer module comprises a clock control circuit, a voltage detection circuit, a mode switching circuit and a switch capacitive array circuit, the clock control circuit is connected with the mode switching circuit and the switch capacitive array circuit respectively, the voltage detection circuit is connected with the mode switching circuit and the switch capacitive array circuit respectively, the mode switching circuit is further connected with the switch capacitive array circuit; the mode switching circuit is further connected to the LDO module; and the LDO module is a master-slave structure LDO. The optimal working mode is automatically selected and switched to according to the input voltage, the efficiency of a power management chip is optimized, and the intelligent scheduling high-efficiency power manager is suitable for various applications with low power consumption.

Description

technical field [0001] The invention relates to an intelligent scheduling high-efficiency power supply manager and a control method thereof. Background technique [0002] Traditionally, with SoC (system on chip) widely used in portable electronic devices, power management chips responsible for the distribution and transformation of electric energy have become indispensable. In order to meet the demanding requirements of portable electronic devices, smaller size, lower power consumption and higher efficiency are the future development direction of power management chips. In the power management chip, there are three types of circuits used to realize voltage conversion: low dropout linear regulator (LDO), switched capacitor regulator and switched inductor regulator. Among them, LDO with simple structure has the highest market share. But its conversion efficiency will decrease with the increase of input voltage. [0003] At present, domestic industrial products and academic ...

AI Technical Summary

Problems solved by technology

However, the size of this power manager is relatively large, and it is not suitable for use in portable products with more demanding volume and area requirements.

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