Method for regulating dynamic voltage frequency in power supply management technique

Abstract

The invention relates to a dynamic voltage frequency adjustment method in the power management technology, which comprises steps: collecting different hardware signals; writing a hardware dynamic voltage frequency adjustment controller and a corresponding register of a CPU loading log; reading CPU loading log information via an operating system / software drive, and inputting the information into an interface module of the operating system / software drive after analyzing; and reading dynamic processing temperature compensation, the hardware dynamic voltage frequency adjustment controller, the information processed by the interface module of the operating system / software drive; outputting to a corresponding frequency adjustment and voltage adjustment unit via related algorithm analysis, so as to complete adjusting system real time dynamic voltage frequency. The invention adjusts working frequency according to system performance demands, and correspondingly reduces system working voltage and reduces dynamic power dissipation. The invention greatly improves shortcomings of short service life of the battery, bad system stability and reliability brought in by the traditional simple power management technology. The invention can use various embedded system devices such as the portable multimedia recording and playing device, and smart phone.

Description

【Technical field】 [0001] The invention relates to a power management technology, in particular to a dynamic voltage frequency adjustment method in the power management technology. 【Background technique】 [0002] The demand for digital power has risen sharply recently. Cutting-edge semiconductor process technology not only makes devices smaller and faster, they also require lower (higher density) supply voltage and higher supply current; at the same time, the function of the final system continues to increase, volume and average selling price is continuously declining. These factors are forcing power-supply designers to develop more accurate, faster-responsive, more efficient, smaller and lower-cost power supplies over generations. Faced with these problems, traditional analog control solutions are gradually becoming helpless. [0003] Power supply design is a major problem in the design of handheld devices, and it is also a major bottleneck that limits the size reduction ...

AI Technical Summary

Problems solved by technology

As a result, the system has more voltage rails and consumes more power.

Most of the current handheld devices require different working modes such as working mode and sleep mode. In terms of power management, designers also put forward higher requirements; they cannot collect the load status of the system, and the energy saving effect is not significant; The complex relationship between management and real-time performance requirements is not handled precisely and efficiently

At the same time, with the increase of system speed, the increase of device power consumption is accelerated, the battery life is shortened, and the overall stability and reliability of the system are also greatly affected.

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