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Voltage regulating device and method

A voltage regulation and voltage technology, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve the problems of consuming wafer area and large area, and achieve the effect of avoiding large fluctuations, reducing area and stable output voltage

Active Publication Date: 2016-10-05
SEMICON MFG INT (SHANGHAI) CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the area of ​​the voltage regulating device in the prior art is relatively large, and a voltage regulating device needs to be installed in each power domain that requires voltage regulation, so it is necessary to spend a considerable amount of wafer area to install a large number of voltage regulating devices

Method used

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Embodiment Construction

[0043] It can be seen from the background art that the voltage regulating device in the prior art has a problem of too large area, and the reason is analyzed in combination with the specific structure of the voltage regulating device in the prior art.

[0044] However, in the prior art, both the voltage regulating device 1 and the power gating 21 need a considerable area to be formed. Moreover, in the prior art, one voltage regulating device 1 can only regulate the voltage of a single power domain, and a plurality of different voltage regulating devices need to be provided for different power domains in the chip, so a considerable amount of wafers are required for chip design. The area is provided with numerous voltage regulating devices 1 and power gates 21 . In addition, in order to avoid the fluctuation of the output voltage Vout caused by the change of the load unit 2, a decoupling capacitor 3 connected to the output terminal of the output voltage Vout needs to be provided...

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Abstract

The invention relates to a voltage regulating device and a voltage regulating method. The voltage regulating device comprises a distribution system and a voltage regulating system, wherein the distribution system is used for acquiring the predictive voltage need by a corresponding power domain to execute a task according to the task information of each power domain in a chip, detecting the operation voltage of each power domain in the chip to acquire the detected voltage of the corresponding power domain and acquiring the voltage distribution control signal of the corresponding power domain according to the predictive voltage and the detected voltage; the voltage regulating system is connected with the distribution system and the power domains in the chip and used for regulating the voltage of the corresponding power domain in the chip according to the control signal output by the distribution system so as to allow the detected voltage of the corresponding power domain reaches the predictive voltage during task execution. The voltage regulating device has the advantages that the voltage of multiple power domains in the chip is controlled at the same time through the voltage regulating device, a digital control part is used to replace an analog circuit in the prior art, and the area of the voltage regulating device in the chip is reduced.

Description

technical field [0001] The invention relates to the field of circuit design, in particular to a voltage regulating device and a voltage regulating method. Background technique [0002] Therefore, in today's System on Chip (SoC) design, many voltage regulators need to be provided to provide different voltages to different power domains. [0003] refer to figure 1 , shows a schematic structural diagram of a voltage regulating device in the prior art. The voltage regulating device 1 includes: a reference circuit 11, a comparator 12, a drive unit 13 and a feedback unit 14; the two input terminals of the comparator 12 are respectively connected to the output terminal of the reference circuit 11 and the output terminal of the feedback unit 14, and the output terminal of the comparator 12 The output terminal is connected to the input terminal of the driving unit 13 . The output terminal of the driving unit 13 is connected to the input terminal of the feedback unit 14 and the loa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/56
Inventor 杨家奇
Owner SEMICON MFG INT (SHANGHAI) CORP
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