Chip dynamic voltage regulating circuit and terminal equipment

Abstract

The invention provides a chip dynamic voltage regulating circuit and terminal equipment. The voltage regulating circuit comprises a parameter detection module, a PWM (Pulse Width Modulation) signal generation module and a power supply module, wherein the parameter detection module is used for detecting the attribute parameters of a chip; the PWM signal generation module is used for generating a corresponding PWM digital signal according to the attribute parameters, and a low pass filter converts the PWM digital signal into an analog signal with DC voltage; and the power supply module comprises a DC-DC converter or a low dropout linear regulator, the feedback input end of an error amplifier in the power supply module is respectively connected with the signal output end of the PWM signal generation module and the voltage output end of the voltage regulating circuit, and the power supply module is used for regulating an output voltage according to the feedback analog signal and the feedback signal at the voltage output end of the voltage regulating circuit. According to the invention, the traditional power supply circuit structure can be used, the size of the output voltage is accurately regulated through the analog signal converted from the PWM digital signal based on the variation of the chip attribute parameters, so that the dynamical voltage regulation of the chip can be achieved at a lower cost, and the waste of power consumption is avoided.

Description

technical field [0001] Embodiments of the present invention relate to electrical technology, and in particular to a chip dynamic voltage regulation circuit and terminal equipment. Background technique [0002] With the continuous improvement of the integration and speed of the system-on-chip (SOC), the core power supply current of the chip is getting larger and larger, and the power consumption of the chip occupies most of the power consumption of the whole system where the chip is located. Proportion. Therefore, if the power consumption of the core power supply of the chip can be reduced, there will be great benefits in reducing the power consumption of the whole machine. [0003] One of the ways to reduce the power consumption of the chip core is to provide the chip with a matching power supply voltage to avoid power consumption caused by excessive voltage. At present, the process deviation of the chip will lead to different requirements for the core voltage of the chip....

AI Technical Summary

Problems solved by technology

However, the cost of this solution is high. Since a digital signal processing logic circuit needs to be added to the PMU, the cost of a PMU with a dynamic voltage regulation function is generally at least 30% higher than that of a DC / DC converter of the same specification.

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