Method for quickly measuring circuit power consumption

A technology for measuring circuit and power consumption, applied in the direction of electric power measurement through current/voltage, etc., can solve problems such as many 0 ohm resistances, it is difficult to achieve non-destructive measurement of mobile phone PCBs, and it is difficult to test the supply current of multiple power supplies at the same time. , to achieve the effect of rapid positioning and confirmation, speeding up R&D and maintenance
CN101672872AInactive Publication Date: 2010-03-17QINGDAO HISENSE MOBILE COMM TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO HISENSE MOBILE COMM TECH CO LTD
Publication Date
2010-03-17
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a method for quickly measuring circuit power consumption, wherein a power supply circuit in a circuit to be measured is designed by adopting a voltage stabilizer and the insideof the voltage stabilizer realizes voltage-stabilizing output by a negative feedback principle; and a path of voltage-stabilizing source is added at a voltage output end of the voltage stabilizer, the output voltage Vext of the voltage-stabilizing source is higher than the practical output voltage Vout of the voltage stabilizer, the output current Iext of the voltage-stabilizing source is read and the circuit power consumption is calculated by substituting the Vext and the Iext in a formula P=Vext*Iext. Under the conditions that wire jumping phenomenon does not occur and any devices on a circuit board are not taken off, the method for measuring circuit power consumption can quickly, accurately and non-destructively measure the current consumption conditions of a plurality of power domains, thereby calculating the power consumption of various paths of submodules to be measured or subsystems to realize quick positioning and confirmation of abnormal power consumption problem and furtheraccelerating the research and development and maintenance speed of electric appliances.
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Description

technical field

[0001] The invention belongs to the technical field of power detection, and in particular relates to a method for quickly measuring the power consumption of an internal circuit of an electric device. Background technique

[0002] The operation of detecting the power consumption of the internal circuit of electrical equipment is not only often encountered in the process of R & D and design of circuit boards, but also often implemented in the process of testing and maintenance of electrical equipment in the future, so as to locate and determine the location of abnormal problems . Therefore, the detection efficiency of power consumption directly affects the development and maintenance efficiency of electrical equipment.

[0003] The following takes an internal circuit board of a mobile phone product as an example for specific description.

[0004] With the increasing number of mobile phone functions, the power supply design inside the mobile phone is also beco...

Claims

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