Power management system, electronic device and PMU (power management unit) chip

Abstract

The application discloses a power management system, an electronic device and a PMU (power management unit) chip and aims to solve the technical problem that a PMU unit cannot be compatible with multiple generations of CPU (central processing unit) platforms. The system comprises a charge management chip, a CPU power management chip and a PMU chip, wherein the charge management chip is connected with a power adapter; the CPU power management chip and the PMU chip are connected with the charge management chip; the charge management chip is used for converting first output voltage output by the power adapter to second output voltage and outputting the second output voltage to a battery of the electronic device, the CPU management chip and the PMU chip, and the CPU power management chip is used for converting the second output voltage into third output voltage and outputting to a CPU of the electronic device; the PMU chip is used for converting second output voltage into N-1 fourth output voltage to supply power to other power consumption devices except the CPU in the electronic device, wherein N is an integer which is not less than 2.

Description

technical field [0001] The present application relates to the field of electronic technology, in particular to a power management system, electronic equipment and a PMU chip. Background technique [0002] With the rapid development of electronic technology, all kinds of electronic equipment are dazzling, and power supply is an important part of many electronic equipment. Effective power management can better reduce the energy consumption of components in electronic equipment when they are idle, and make electronic equipment more energy-saving. [0003] The power management unit PMU is an important link in the entire power management system of portable electronic devices. It integrates several types of traditional discrete power management devices into a single package, which can achieve higher power conversion efficiency and lower power consumption. , and fewer components to accommodate reduced board space. The basic components of the PMU-based power management solution inc...

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Problems solved by technology

[0010] The embodiment of the present application provides a power management system, electronic equipment, and a PMU chip to solve the problem in the prior art that when the PMU unit adopts a PMU chip integrated with a CPU power management chip, the PMU unit cannot be compatible with multiple generations of CPU platforms. In order to solve the technical problem, the CPU power management unit and the PMU unit in the power management system are independent of each other, and the PMU chip in the PMU unit does not need to be changed with the replacement of the CPU in the electronic device, that is, the PMU chip in the PMU unit can be Compatible with the technical effects of multiple generations of CPU platforms

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