CN207488441U - Energy consumption controller in large-scale integrated circuit - Google Patents

Abstract

The utility model provides the energy consumption controller in a kind of large-scale integrated circuit, including power control circuit, voltage sampling circuit, current sample and conversion circuit, first comparator, the second comparator, with door, amplifying circuit, high threshold voltage NMOS tube T_N；Wherein, electric power management circuit controls the V of large-scale Integrated circuit IC using the metal-oxide-semiconductor of low threshold voltage as driving switch_CCBreak-make；The power supply termination V of electric power management circuit_DD, ground connection termination T_NDrain electrode, T_NSource electrode ground connection；Voltage sampling circuit, current sample and conversion circuit are used for the voltage value and current value of sampled I C；First comparator by the first reference voltage compared with sampled voltage, the second comparator by the second reference voltage compared with the voltage that sample rate current is converted, then by with door obtain control signal；Pass through amplifying circuit and T with the output terminal of door_NGrid be connected.The utility model can reduce the energy consumption of IC and the Leakage Current of circuit, operational efficiency be improved, so as to reduce the power consumption of overall circuit.

Description

Energy consumption controller in large-scale integrated circuit

Technical field

The utility model belongs to the energy consumption control in technical field of integrated circuits more particularly to a kind of large-scale integrated circuit Device.

Background technology

The development of integrated circuit industry enhances cmos circuit running frequency and integrated level, also circuit power is caused gradually to increase Add.Big power consumption causes system stability and reliability to reduce, and improves the difficulty of system encapsulation.Big power consumption in cmos circuit, So that chip operating condition weakens, chip value is greatly reduced.Therefore, power problems become cmos circuit fast development process Middle urgent problem.And the power consumption control method of traditional large-scale integrated circuit, there are operand is big, tip exactness is limited Problem.

Therefore, using power dissipation objectives expected from the guarantee cmos circuit completion of rational power consumption control method, become related and appoint The hot spot direction of business research.The energy consumption of integrated circuits control method worked out in the past all there are it is certain the problem of.Such as based on tradition The method of transistor dissipation module implements power consumption simulation according to the complete hardware description of circuit, but this method requirement CMOS is electric There are the design of complete register transfer in road, and its run time and memory consumption are higher.Pass through PSPLCE analog acquisitions Cmos circuit power source features and data, the method predicted by dynamic threshold power consumption, realize effective control of CMOS circuit power consumptions System, but it is more demanding to power supply stability, and needs to carry out sunykatuib analysis using a large amount of data, and operation efficiency is low, deposits In certain limitation.The method for controlling cmos circuit power consumption by reducing CMOS supply voltages designs current-mode CMOS electricity Road, realizes the reasonable control of cmos circuit energy consumption, but this method is there are the defects of control accuracy, and easily generates electricity Amount problem.Cmos circuit average power consumption method of estimation based on emulation imitates circuit by all possible defeated people's combinations Very, according to simulated power dissipation arithmetic average power consumption, but this method needs all information in the clearly defeated people's pattern of user, limitation It is higher.The average energy consumption of cmos circuit is predicted by least squares approach, by point prediction method, can be obtained under high-precision compared with High convergence efficiency, but the estimated result of this method is easily interfered by the inside and outside environment of circuit, it can not be to circuit energy Consumption is accurately controlled.

Utility model content

The purpose of this utility model is to provide the energy consumption controller in a kind of large-scale integrated circuit, can solve above-mentioned existing Method in technology there are the problem of, reduce the energy consumption of large-scale integrated circuit, reduce the Leakage Current of circuit, improve the fortune of circuit Line efficiency reduces the power consumption of overall circuit.

Above-mentioned purpose is realized by following technical solution：

Energy consumption controller in a kind of large size integrated circuit, including power control circuit, voltage sampling circuit, current sample And conversion circuit, first comparator, the second comparator, with door, amplifying circuit, high threshold voltage NMOS tube T_N；Wherein, it is described Electric power management circuit is using the metal-oxide-semiconductor of low threshold voltage as driving switch, the driving switch control large-scale integrated electricity The power supply V on road_CCBreak-make；The power supply termination power V of the electric power management circuit_DD, the ground terminal of the electric power management circuit with T_NDrain electrode be connected, T_NSource electrode ground connection；The voltage sampling circuit, current sample and conversion circuit and large-scale integrated circuit phase Connect, for sampling the voltage value and current value of the large-scale integrated circuit；The first input end and voltage of the first comparator The output terminal of sample circuit is connected, and the second input terminal of the first comparator is connect with the first reference voltage；Second ratio First input end compared with device is connected with the output terminal of current sample and conversion circuit, the second input terminal of second comparator with Second reference voltage connects；The output terminal of the first comparator, the output terminal of second comparator are defeated respectively and with door Enter end to be connected, it is described to pass through amplifying circuit and T with door output terminal_NGrid be connected.

Further, the voltage sampling circuit uses pure resistance potential-divider network.

Further, the electric current uses current transformer using circuit.

Description of the drawings

Fig. 1 is the structure diagram of the energy consumption controller in the large-scale integrated circuit of the utility model.

Specific embodiment

Explanation and specific embodiment further illustrate the utility model below in conjunction with the accompanying drawings.

As shown in Figure 1, the energy consumption controller in the large-scale integrated circuit of the utility model, including power control circuit, Voltage sampling circuit, current sample and conversion circuit, first comparator, the second comparator, the NMOS tube with door, high threshold voltage T_N。

Wherein, the electric power management circuit uses the metal-oxide-semiconductor of low threshold voltage as driving switch, the driving switch control Make the power supply V of the large-scale integrated circuit_CCBreak-make.The power supply termination power V of the electric power management circuit_DD, the power supply pipe Manage the ground terminal and T of circuit_NDrain electrode be connected (if the ground terminal of electric power management circuit is interpreted as not using T here_NGuan Shi Earth point), T_NSource electrode ground connection.The voltage sampling circuit, current sample and conversion circuit are connected with large-scale integrated circuit, For sampling the voltage value and current value of the large-scale integrated circuit.The first input end and voltage sample of the first comparator The output terminal of circuit is connected, the second input terminal of the first comparator and the first reference voltage V_ref1Connection.Second ratio First input end compared with device is connected with the output terminal of current sample and conversion circuit, the second input terminal of second comparator with Second reference voltage V_ref2Connection.The output terminal of the first comparator, second comparator output terminal respectively and with door Input terminal be connected, it is described to pass through amplifying circuit and T with door output terminal_NGrid be connected.

Voltage sampling circuit can be used common pure resistance potential-divider network, and it is mutual that using circuit common electric current can be used in electric current Sensor.Common operational amplifier can be used in amplifying circuit.The design of the peripheral circuit of driving switch, operation amplifier circuit etc. It is the prior art, which is not described herein again.

The operation principle of the utility model is：In the power input of large-scale integrated circuit and power supply V_CCBetween low threshold is set Power control circuit of the metal-oxide-semiconductor of threshold voltage as driving switch passes through the NMOS tube T of high threshold voltage_NAs management switch, In T_NThe management signal of grid input when being 1, then T_NPipe is connected, the power control circuit of Low threshold can trouble-free operation (managing When signal is 1, the driving switch in electric power management circuit is also switched on, and physical circuit design is the prior art, no longer superfluous here State), power supply V_CCThe large-scale integrated circuit of access.T_NThe drain electrode of pipe can regard virtual earth as, formed it is micro- be higher than 0 voltage, which will not Interfere the operation of overall circuit.It is interfered by drain voltage, the voltage in the metal-oxide-semiconductor in low-threshold power power management circuits increases Add so that Leakage Current is reduced；If pipe T_NThe management signal of grid input when being 0, then T_NPipe is not turned on, the electricity of Low threshold Source control circuit is out of service, power supply V_CCLarge-scale integrated circuit is not accessed.It disconnects together, T_NThe drain electrode of pipe is hanging. T_NPipe is higher Threshold voltage cause itself Leakage Current reduction, effectively control the electric current of the electric power management circuit of Low threshold, substantially reduce The power consumption of overall circuit.

The above content is combine specific preferred embodiment further detailed description of the utility model, it is impossible to Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field For personnel, without departing from the concept of the premise utility, several simple deduction or replace can also be made, should all be regarded To belong to the scope of protection of the utility model.

Claims (3)

1. a kind of energy consumption controller in large size integrated circuit, it is characterised in that：The energy consumption controller includes power supply control electricity Road, voltage sampling circuit, current sample and conversion circuit, first comparator, the second comparator and door, amplifying circuit, high threshold The NMOS tube T of voltage_N；Wherein, the electric power management circuit uses the metal-oxide-semiconductor of low threshold voltage as driving switch, the drive The power supply V of the dynamic switch control large-scale integrated circuit_CCBreak-make；The power supply termination power V of the electric power management circuit_DD, institute State the ground terminal and T of electric power management circuit_NDrain electrode be connected, T_NSource electrode ground connection；The voltage sampling circuit, current sample and Conversion circuit is connected with large-scale integrated circuit, for sampling the voltage value and current value of the large-scale integrated circuit；Described first The first input end of comparator is connected with the output terminal of voltage sampling circuit, the second input terminal of the first comparator and first Reference voltage connects；The first input end of second comparator is connected with the output terminal of current sample and conversion circuit, described Second input terminal of the second comparator is connect with the second reference voltage；The output terminal of the first comparator, described second are compared The output terminal of device is connected respectively and with the input terminal of door, described to pass through amplifying circuit and T with door output terminal_NGrid be connected.

2. energy consumption controller according to claim 1, it is characterised in that：The voltage sampling circuit is divided using pure resistance Network.

3. energy consumption controller according to claim 1, it is characterised in that：The electric current uses Current Mutual Inductance using circuit Device.