CN203759643U - System-power-consumption adjusting circuit and electronic equipment - Google Patents
System-power-consumption adjusting circuit and electronic equipment Download PDFInfo
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- CN203759643U CN203759643U CN201320778207.2U CN201320778207U CN203759643U CN 203759643 U CN203759643 U CN 203759643U CN 201320778207 U CN201320778207 U CN 201320778207U CN 203759643 U CN203759643 U CN 203759643U
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Abstract
The utility model discloses a system-power-consumption adjusting circuit and electronic equipment. The system-power-consumption adjusting circuit comprises a system current detection circuit, a power management circuit and a CPU (Central Processing Unit) core voltage adjusting circuit, wherein the system current detection circuit is used for detecting the current in a system and outputting the detected current size signal to the CPU core voltage adjusting circuit; the CPU core voltage adjusting circuit is used for receiving the current size signal transmitted by the system current detection circuit and feeding a core voltage adjusting signal to the power management circuit according to the current size signal; the power management circuit is used for adjusting core voltage outputted to a CPU according to the core voltage adjusting signal so as to adjust the power consumption of the system. The system-power-consumption adjusting circuit and the electronic equipment have the advantages that when the system works, the size of the current in the system is detected, and the core voltage outputted to the CPU is adjusted according to the size of the current, so that the purposes of adjusting the power consumption of the system, reducing the occurrence of the conditions of heating of the system and overload working of elements and prolonging the service life of the system are achieved.
Description
Technical field
The utility model relates to system power dissipation control field, particularly a kind of system power dissipation regulating circuit and electronic equipment.
Background technology
In the traditional circuit of system power dissipation control, be mainly by electric power management circuit directly to system power supply, the core voltage that outputs to system CPU is constant, the output voltage that system cannot active adjustment electric power management circuit.
In the time of system works, the working load of CPU and peripheral circuit duty can change, and system power also can correspondingly change, and in the time that system power increases, may cause system heating and element in distress work, thus damage system or reduction lifetime of system.In the time that system power reduces, may cause the underutilization of system CPU, the work efficiency of system is lower.
Utility model content
The utility model provides a kind of system power dissipation regulating circuit and electronic equipment, the problem of the adverse effect of system power dissipation being brought with resolution system curent change.
According to an aspect of the present utility model, a kind of system power dissipation regulating circuit is provided, this circuit comprises: system power testing circuit, electric power management circuit and CPU core voltage regulating circuit.
System power testing circuit, for detection of the electric current in system, and exports to CPU core voltage regulating circuit by the size of current signal detecting.
CPU core voltage regulating circuit, the size of current signal sending for receiving system current detection circuit, feeds back core voltage conditioning signal according to this size of current signal to electric power management circuit.
Electric power management circuit, for the core voltage to system CPU according to core voltage conditioning signal regulation output, thus the power consumption of regulating system.
In an embodiment of the present utility model, CPU core voltage regulating circuit is integrated in system CPU, and system CPU comprises digital-to-analog conversion D/A port and analog-digital conversion a/d port.
The A/D port of system CPU is connected with described system power testing circuit, the size of current signal sending by this A/D port receiving system current detection circuit.
The D/A port of system CPU and the feedback end of electric power management circuit are connected, and feed back core voltage conditioning signal by this D/A port to electric power management circuit.
The core voltage input end of the voltage output end of electric power management circuit and system CPU is connected, and the core voltage of system CPU is provided.
In an embodiment of the present utility model, system power testing circuit comprises: detect resistance, operational amplifier;
The in-phase input end that detects one end of resistance and the positive pole of power supply and operational amplifier is connected;
The voltage input end that detects the other end of resistance and the inverting input of operational amplifier and electric power management circuit is connected;
The A/D port of the output terminal of operational amplifier and system CPU is connected;
The minus earth of power supply.
In an embodiment of the present utility model, CPU core voltage regulating circuit comprises to electric power management circuit feedback core voltage conditioning signal: when CPU core voltage regulating circuit determines that according to size of current signal system power overloads, the signal overloading to electric power management circuit feedback system electric current, to make electric power management circuit reduce the core voltage that outputs to system CPU according to this feedback signal; And while determining that according to size of current signal system power reduces, the signal reducing to electric power management circuit transmitting system electric current is to make electric power management circuit improve the core voltage that outputs to system CPU according to this feedback signal;
Or
CPU core voltage regulating circuit, by the voltage of the feedback end of increase electric power management circuit, reduces the signal of the core voltage that outputs to system CPU to electric power management circuit feedback;
CPU core voltage regulating circuit, by reducing the voltage of feedback end of electric power management circuit, improves the signal of the core voltage that outputs to system CPU to electric power management circuit feedback.
According to another aspect of the present utility model, a kind of electronic equipment is provided, this equipment comprises power supply, system CPU and the system power dissipation regulating circuit as described in aspect of the utility model, power supply connects the system power testing circuit of described system power dissipation regulating circuit, and described system CPU comprises or connect the CPU core voltage regulating circuit of described system power dissipation regulating circuit.
This system power dissipation regulating circuit that the utility model provides is in the time of system works, by size of current in detection system, output to the core voltage of CPU according to the size adjustment of system power, thereby reach regulating system power consumption, the generation of the heating of minimizing system and element in distress working condition, improves the order of lifetime of system.In addition, the utility model also provides a kind of electronic equipment based on said system regulating power consumption circuit.In this electronic equipment owing to having adopted system power dissipation regulating circuit of the present utility model, thereby effectively controllably regulating system power consumption, reduced the generation of the situation such as system heating and element in distress work of this electronic equipment, making has had guarantee in serviceable life of this electronic equipment.
Brief description of the drawings
Fig. 1 is the circuit diagram of a kind of system power dissipation regulating circuit of providing of embodiment of the utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Core concept of the present utility model is in the time of system works; size of current in detection system; and the size of current detecting is passed to central processing unit (the Central Processing Unit of system; be called for short CPU) by CPU, the size of electric current in system is fed back to the electric power management circuit of system; electric power management circuit and then regulation output are to the core voltage of system CPU; by the core voltage of regulating system CPU, reach regulating system power consumption, the element in protection system and the object of system.
Fig. 1 is the circuit diagram of a kind of system power dissipation regulating circuit of providing of embodiment of the utility model, referring to Fig. 1, this system power dissipation regulating circuit that embodiment of the utility model provides comprises the system power testing circuit, electric power management circuit and the CPU core voltage regulating circuit that form by detecting resistance and operational amplifier.
System power testing circuit, for detection of the electric current in system, and exports to CPU core voltage regulating circuit by the size of current signal detecting.
CPU core voltage regulating circuit, the size of current signal sending for receiving system current detection circuit, feeds back core voltage conditioning signal according to this size of current signal to electric power management circuit.
Electric power management circuit, for the core voltage to system CPU according to core voltage conditioning signal regulation output, thus the power consumption of regulating system.
Referring to Fig. 1, in an embodiment of the present utility model, CPU core voltage regulating circuit is integrated in system CPU, and system CPU comprises digital-to-analog conversion D/A port and analog-digital conversion a/d port.
The A/D port of system CPU is connected with described system power testing circuit, the size of current signal sending by this A/D port receiving system current detection circuit.
The D/A port of system CPU and the feedback end of electric power management circuit are connected, and feed back core voltage conditioning signal by this D/A port to electric power management circuit.
The core voltage input end of the voltage output end of electric power management circuit and system CPU is connected, and the core voltage of system CPU is provided.
In an embodiment of the present utility model, system power testing circuit comprises: detect resistance, operational amplifier.
The in-phase input end that detects one end of resistance and the positive pole of power supply and operational amplifier is connected.
The voltage input end that detects the other end of resistance and the inverting input of operational amplifier and electric power management circuit is connected.
The A/D port of the output terminal of operational amplifier and system CPU is connected.
The minus earth of power supply.
In an embodiment of the present utility model, CPU core voltage regulating circuit, comprise to electric power management circuit feedback core voltage conditioning signal: when CPU core voltage regulating circuit determines that according to size of current signal system power overloads, the signal overloading to electric power management circuit feedback system electric current; Electric power management circuit receives after this signal, reduces the core voltage that outputs to system CPU; And while determining that according to size of current signal system power reduces, the signal reducing to electric power management circuit transmitting system electric current, electric power management circuit is received after this signal, improves the core voltage that outputs to system CPU.
In an embodiment of the present utility model, CPU core voltage regulating circuit, comprise to electric power management circuit feedback core voltage conditioning signal: CPU core voltage regulating circuit, by the voltage of the feedback end of increase electric power management circuit, reduces the signal of the core voltage that outputs to system CPU to electric power management circuit feedback;
CPU core voltage regulating circuit, by reducing the voltage of feedback end of electric power management circuit, improves the signal of the core voltage that outputs to system CPU to electric power management circuit feedback.
Referring to Fig. 1, particularly, system power dissipation adjustment process is: in the time of system works, the two ends of detecting resistance R 1 can produce voltage signal, and amplifier will send the A/D port of CPU, the variation that CPU removes detection system electric current by detecting the voltage at resistance R 1 two ends to after the voltage signal conversion at R1 two ends, and by the feedback voltage of D/A delivery outlet control electric power management circuit, regulation output, to the core voltage of CPU, is adjusted the work dominant frequency of CPU, thereby reaches the target of regulating system power consumption.
In the time that the electric current in system increases, the voltage that detects resistance R 1 two ends also can increase, when CPU overloads to system power by A/D Port detecting, increase the feedback voltage of electric power management circuit by the D/A port of CPU, reduce and output to CPU core voltage, reduce the work dominant frequency of CPU, thereby reduce the power consumption of system.
In the time that the electric current in system reduces, the voltage at R1 two ends also can reduce, CPU by A/D Port detecting to system's work-load compared with hour, reduce the feedback voltage of electric power management circuit by the D/A port of CPU, improve the output of CPU core voltage, improve the work dominant frequency of CPU, thereby improve the work efficiency of system.
Referring to Fig. 1, in an embodiment of the present utility model, the resistance that detects resistance R 1 is 10 milliohms.In other embodiment of the present utility model, should select detecting resistance according to concrete circuit conditions.
This system power dissipation regulating circuit that the utility model provides, by increasing an operational amplification circuit and a detection resistance for detection of system power in traditional circuit, and sends the CPU of system to.The CPU of system, according to size of current in system, outputs to the conditioning signal of the core voltage of CPU to electric power management circuit feedback.Arrive the core voltage of CPU by regulation output, reach regulating system power consumption, the heating of minimizing system and element in distress work, the object of raising lifetime of system.
According to another aspect of the present utility model, a kind of electronic equipment is provided, this equipment comprises power supply, system CPU and system power dissipation regulating circuit as shown in Figure 1, power supply connects the system power testing circuit of described system power dissipation regulating circuit, and system CPU comprises or connect the CPU core voltage regulating circuit of described system power dissipation regulating circuit.In this electronic equipment owing to having adopted system power dissipation regulating circuit of the present utility model, thereby effectively controllably regulating system power consumption, reduce the generation of the situation such as system heating and element in distress work of this electronic equipment, the serviceable life of improving this electronic equipment.
The utility model also provides a kind of system power dissipation control method, and the method comprises:
Detection system size of current also outputs signal to system CPU.
System CPU receives system power high low signal and to electric power management circuit feedback core voltage conditioning signal, electric power management circuit is the core voltage to system CPU according to core voltage conditioning signal regulation output, thus the power consumption of regulating system.
In an embodiment of the present utility model, detection system size of current also outputs signal to system CPU and comprises:
Arrange one and detect resistance and an operational amplifier, the in-phase input end that order detects one end of resistance R 1 and the positive pole of power supply and operational amplifier is connected.
The input end that order detects the other end of resistance and the inverting input of operational amplifier and electric power management circuit is connected; Make the output terminal of operational amplifier be connected with system CPU, the minus earth of power supply.
In an embodiment of the present utility model, system CPU receiving system size of current signal also comprises to electric power management circuit feedback core voltage conditioning signal: system CPU comprises digital-to-analog conversion D/A port and analog-digital conversion a/d port.
Make the A/D port of system CPU be connected with the output terminal of operational amplifier, by this A/D port receiving system size of current signal.
Make the D/A port of system CPU and the feedback end of electric power management circuit be connected, feed back core voltage conditioning signal by this D/A port to electric power management circuit.
Make the voltage output end of electric power management circuit and the core voltage input end of system CPU be connected, the core voltage of system CPU is provided.
In an embodiment of the present utility model, electric power management circuit comprises to the core voltage of system CPU according to core voltage conditioning signal regulation output:
System CPU detects when system power overloads, the signal overloading to electric power management circuit transmitting system electric current, and electric power management circuit is received after signal, reduces the core voltage that outputs to system CPU.
System CPU detects when system power reduces, the signal reducing to electric power management circuit transmitting system electric current, and electric power management circuit is received after signal, improves the core voltage that outputs to system CPU.
In an embodiment of the present utility model, system CPU comprises to electric power management circuit feedback core voltage conditioning signal: by increasing the voltage of feedback end of electric power management circuit, reduce to electric power management circuit feedback the signal that outputs to system CPU core voltage.
By reducing the voltage of feedback end of electric power management circuit, improve to electric power management circuit feedback the signal that outputs to system CPU core voltage.
In sum.This system power dissipation regulating circuit of technical solutions of the utility model effectively regulation output to the core voltage of system CPU, thereby regulating system power consumption, the generation of the situations such as minimizing system heating and element in distress work, raising lifetime of system.In addition, the utility model also provides a kind of electronic equipment based on said system regulating power consumption circuit.In this electronic equipment owing to having adopted system power dissipation regulating circuit of the present utility model, thereby effectively controllably regulating system power consumption, reduce the generation of the situation such as system heating and element in distress work of this electronic equipment, the serviceable life of improving this electronic equipment.
The foregoing is only preferred embodiment of the present utility model, be not intended to limit protection domain of the present utility model.All any amendments of doing, be equal to replacement, improvement etc. within spirit of the present utility model and principle, be all included in protection domain of the present utility model.
Claims (4)
1. a system power dissipation regulating circuit, is characterized in that, described circuit comprises: system power inspection circuit, electric power management circuit and CPU core voltage regulating circuit;
Described system power testing circuit, for detection of the electric current in system, and exports to described CPU core voltage regulating circuit by the Small Current Signal detecting;
Described CPU core voltage regulating circuit, the TV university small-signal sending for receiving described system power testing circuit, feeds back core voltage conditioning signal according to this size of current signal to described electric power management circuit
Described electric power management circuit, for the core voltage to system C according to described core voltage conditioning signal regulation output, thus the power consumption of regulating system.
2. circuit as claimed in claim 1, is characterized in that, described CPU core voltage regulates electricity to be integrated in described system CPU, and described system CPU comprises that digital-to-analog conversion D/A port and modulus turn A/D port;
The A/D port of described system CPU is connected with described system power testing circuit, receives by this A port the size of current signal that described system power testing circuit sends;
The D/A port of described system CPU and the feedback end of described electric power management circuit are connected, and feed back core voltage conditioning signal by D/A port to described electric power management circuit;
The core voltage input end of the voltage output end of described electric power management circuit and described system CPU provides the core voltage of described system CPU mutually.
3. circuit as claimed in claim 2, is characterized in that, described system power testing circuit bag detects resistance, operational amplifier;
The in-phase input end of the anodal and described operational amplifier of one end of described detection resistance and power supply connects;
The other end of described detection resistance is connected with the voltage input end of the inverting input of described operational amplifier and described power supply reason circuit;
The A/D port of the output terminal of described operational amplifier and described system CPU is connected;
The minus earth of power supply.
4. an electronic equipment, is characterized in that, this equipment comprises power supply, system CPU and requires the system power dissipation regulating circuit as described in any one in 1 to 3 as profit; Described power supply connects the system power testing circuit of described system consumption regulating circuit, and described system CPU comprises or connect the CPU core voltage regulating circuit on described system power dissipation economize on electricity road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320778207.2U CN203759643U (en) | 2013-11-28 | 2013-11-28 | System-power-consumption adjusting circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320778207.2U CN203759643U (en) | 2013-11-28 | 2013-11-28 | System-power-consumption adjusting circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203759643U true CN203759643U (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320778207.2U Expired - Lifetime CN203759643U (en) | 2013-11-28 | 2013-11-28 | System-power-consumption adjusting circuit and electronic equipment |
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| Country | Link |
|---|---|
| CN (1) | CN203759643U (en) |
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2013
- 2013-11-28 CN CN201320778207.2U patent/CN203759643U/en not_active Expired - Lifetime
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Granted publication date: 20140806 |
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