Chip dynamic voltage regulating circuit and terminal equipment

A dynamic voltage regulation and circuit technology, applied in the electrical field, can solve the problem of high cost, achieve low cost and avoid waste of power consumption

Inactive Publication Date: 2013-02-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Chip dynamic voltage regulating circuit and terminal equipment
  • Chip dynamic voltage regulating circuit and terminal equipment
  • Chip dynamic voltage regulating circuit and terminal equipment

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0017] Example 1

[0018] figure 1 This is a schematic structural diagram of the chip dynamic voltage regulation circuit provided in the first embodiment of the present invention. The circuit is suitable for supplying power to a system provided with an SOC chip, and has dynamic voltage regulation capability. The circuit specifically includes: a parameter detection module 10 , a PWM (Pulse-Width Modulation, Pulse-Width Modulation) signal generation module and a power supply module 30 . Among them, the parameter detection module 10 is used to detect the attribute parameters of the chip 100, which can be set in the chip 100, or can be set independently of the chip 100, as long as the parameter detection function can be completed; the PWM signal generation module is used according to the detected attributes. The parameters generate a corresponding PWM digital signal, and the PWM digital signal is converted into an analog signal with a DC voltage through a low-pass filter; the pow...

Example Embodiment

[0032] Embodiment 2

[0033] image 3 It is a schematic structural diagram of the chip dynamic voltage regulation circuit provided in the second embodiment of the present invention. The parameter detection module in this embodiment includes a chip process monitor (PVT Monitor) 11 for detecting process attribute parameters of the chip 100 . The chip process monitor 11 can use the existing technology to detect the chip process, mainly to detect the process value of the chip 100 .

[0034] In the PWM signal generation module, the digital-to-analog conversion unit is used to convert the detected attribute parameters into corresponding voltages based on the set mapping relationship. This function can be implemented in software by the existing CPU in the chip. Those skilled in the art can know the structure of a conventional PWM signal generator, which will not be repeated here.

[0035] In this embodiment, a DC-DC converter or an LDO converter is specifically used, and the error ...

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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....

Claims

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Application Information

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IPC IPC(8): H02M3/157
CPCH02M3/156H02M3/157G06F1/26H02M1/0025G05F1/46
Inventor 陈玉柱黄涛
Owner HUAWEI TECH CO LTD
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