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Power management circuit of multi-core processor

A multi-core processor, power management technology, applied in the direction of data processing power, to reduce its own power consumption, prolong battery life, save energy

Inactive Publication Date: 2012-07-25
李一
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, on a multi-core processor chip, all processor cores share the same power supply input, which makes it impossible for any core processor to independently select its power supply input voltage, and all processors must be in the same power supply mode

Method used

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  • Power management circuit of multi-core processor
  • Power management circuit of multi-core processor

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Embodiment Construction

[0013] In the power management circuit, one or more switching power supplies provide several outputs of different voltages, which are sent to each core processor core (group) through the power supply network on the chip. Each core processor (group) is connected to several different power supply lines, and can independently choose to take power from any one or more power supply lines.

[0014] Each core processor or each processor group is connected to different power supply lines through several switches, and a switch connecting one processor core (group) and one power supply line may be one or more power transistors connected in parallel. Switches connecting a processor core or a cluster of processors to multiple power supply lines can be driven using exclusive ground logic to ensure that no two supply lines are falsely shorted.

[0015] Transistors connecting a core processor or a processor group to any power supply line can also be driven using an analog drive circuit to ad...

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Abstract

The invention discloses a power management circuit of a multi-core processor. An optional core processor or a core processor group of the multi-core processor can independently select a channel of suitable voltage from multiple channels of voltage outputs provided by a switch power source via a power grid on a chip according to load (idling degree). By means of providing different voltages to the different core processors or core processor groups of the multi-core processor, self power consumption of the multi-core processor is reduced, energy is saved, and duration time of a battery during power supply is prolonged.

Description

Technical field: [0001] The invention relates to power management of a multi-core processor, and is a power management circuit, specifically, a power management circuit of a multi-core processor. Background technique: [0002] High-performance processors are developing rapidly towards multi-core. Dual-core, quad-core, 16-core, 64-core, the number of cores on a single chip is increasing. For most applications, it is not necessary for a computer to have all the processors on a chip working at maximum capacity. In the state of low workload and non-working state, the processor can reduce its power consumption by reducing its power supply input voltage. Currently, on a multi-core processor chip, all processor cores share the same power supply input, which makes it impossible for any core processor to independently select its power supply input voltage, and all processors must be in the same power supply mode. The present invention proposes a new multi-core processor power mana...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/32
Inventor 李一
Owner 李一
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