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Method and apparatus for power switching

A technology of power supply and switching, applied in the direction of power reduction of circuit devices, battery circuit devices, field effect transistors, etc., can solve problems such as long standby time

Inactive Publication Date: 2014-08-13
MARVELL WORLD TRADE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Users who prefer to charge their mobile phones less may consider long standby time over other mobile phone features

Method used

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  • Method and apparatus for power switching
  • Method and apparatus for power switching
  • Method and apparatus for power switching

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] figure 1 A block diagram of an example integrated circuit (IC) chip 100 according to one embodiment of the disclosure is shown. The IC chip 100 may be any suitable IC chip including one or more functional circuit blocks with switchable power supplies. When the IC chip 100 is powered on, the functional circuit blocks can be powered on / off respectively during operation. Accordingly, a functional circuit block can be powered down to save power when its operation is not required.

[0023] exist figure 1 In an example, the IC chip 100 includes a central processing unit (CPU) 101, a chip power controller 102, a data encryption unit (DEU) 103, a graphics processing unit (GPU) 104, a memory block 105, and the like. In one example, CPU 101 , DEU 103 , and GPU 104 have switchable power supplies and can be powered on / off separately during operation when IC chip 100 is powered on.

[0024] Furthermore, according to one embodiment of the present disclosure, when the IC chip 10...

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PUM

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Abstract

Aspects of the disclosure provide a circuit. The circuit includes a switch and a switch controller. The switch is between a first node that receives a first power supply and a second node, and is controlled to couple / decouple the second node with the first node to switch on / off a second power supply at the second node. The switch controller is configured to generate a switch control signal to control a charging current flowing through the switch to switch on the second power supply.

Description

[0001] Cross References to Related Applications [0002] This disclosure claims the benefit of US Provisional Application No. 61 / 568,556 for "Power Switch Architecture," filed December 8, 2011, the entire contents of which are hereby incorporated by reference. Background technique [0003] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors (to the extent that work is described in this Background section) and aspects of that description that might not otherwise qualify as prior art at the time of filing are neither expressly nor implicitly admitted as with respect to the prior art of the present disclosure. [0004] Often, power consumption is one of the main concerns for users purchasing battery-operated electronic devices. In one example, a mobile phone with low power consumption may have a long standby time. Users who prefer to charge their mobile phones less may c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/00G06F1/32
CPCG06F1/266H02J7/0052G06F1/263G06F1/3287H03K19/0016Y02B60/1282H03K19/0013Y02D10/00H02J7/00
Inventor P·苏塔尔德加O·西古恩扎姜斌H-C·朝D·特里维迪
Owner MARVELL WORLD TRADE LTD