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Power management circuit and associated power management method

A power management and circuit technology, applied in the direction of only measuring voltage, adjusting electrical variables, instruments, etc., to achieve the effect of accurately compensating for voltage drop

Inactive Publication Date: 2016-12-07
MEDIATEK INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for high performance ICs / components that have high power consumption but still need to be powered by a single PMIC, the IR drop variation becomes more severe

Method used

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  • Power management circuit and associated power management method
  • Power management circuit and associated power management method
  • Power management circuit and associated power management method

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Embodiment Construction

[0015] Certain terms are used throughout the description and claims to refer to particular components. It should be understood by those skilled in the art that manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a basis for distinction. The "comprising" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described that the first device is coupled to the second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

[0016] Please refer to figure 1 , which is a schema...

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Abstract

A power management circuit includes a voltage sensing circuit and a supply voltage adjusting circuit. The voltage sensing circuit is arranged for sensing a plurality of voltages respectively of a plurality of nodes of a PCB to generate a sensing result. The supply voltage adjusting circuit is coupled to the voltage sensing circuit, and is arranged for determining a voltage level of a supply voltage supplied to a power plane of the PCB by referring to the sensing result. The power management circuit and the power management method of the present invention can precisely compensate for the voltage drop.

Description

【Technical field】 [0001] The present invention relates to power management, in particular to a power management circuit and a related power management method. 【Background technique】 [0002] In the past, a printed circuit board (PCB for short) usually used a single power management integrated circuit (PMIC for short) to provide a power supply voltage for multiple integrated circuits / components. Due to the small current sink of each IC / device, the IR drop (ie, voltage drop) conversion between multiple ICs / device may be insignificant. However, for high performance ICs / components that have high power consumption but still need to be powered by a single PMIC, the IR drop variation becomes more severe. Therefore, how to accurately compensate the IR drop has become an important issue in the industry. 【Content of invention】 [0003] In view of this, the present invention provides the following technical solutions: [0004] An embodiment of the present invention provides a powe...

Claims

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Application Information

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IPC IPC(8): G05F1/56
CPCG05F3/04G01R19/0084
Inventor 许洽道洪志光杨立群陈昱嵩戴明泽
Owner MEDIATEK INC
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