CN115793766A - Voltage control circuit, method, chip, terminal and readable storage medium - Google Patents
Voltage control circuit, method, chip, terminal and readable storage medium Download PDFInfo
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Abstract
The embodiment of the application discloses a voltage control circuit, a voltage control method, a chip, a terminal and a readable storage medium, which can reduce the power consumption of the terminal. The voltage control circuit includes: the voltage feedback module and the voltage comparison module. The input end of the voltage feedback module is connected with at least one load; the output end of the voltage feedback module is connected with the power supply circuit; the input end of the voltage comparison module is respectively connected with the output end of the voltage feedback module and the power supply input end corresponding to at least one load; the output end of the voltage comparison module is connected with at least one load; the voltage feedback module is used for determining a target voltage according to a voltage regulation application initiated by the first load; sending the target voltage to a power supply circuit and voltage comparison module so that the power supply circuit adjusts the voltage provided on at least one load according to the target voltage; the voltage comparison module is used for detecting the current voltage on at least one load and sending a voltage regulation completion signal to the first load when the current voltage reaches a target voltage.
Description
Technical Field
The present application relates to the field of terminal technologies, and in particular, to a voltage control circuit, a voltage control method, a chip, a terminal, and a readable storage medium.
Background
At present, dynamic Voltage Frequency Scaling (DVFS) is a common low-power-consumption strategy, that is, the power supply Voltage is dynamically adjusted according to the actual needs of a digital circuit. For example, the voltage is increased when the chip operates at high frequency; when the chip works at low frequency, the voltage is reduced, so that the purpose of reducing the power consumption of the chip as far as possible is achieved. However, in the current DVFS adjustment strategy, the load needs to wait for a long time to ensure that the voltage adjustment is completed, and then operates on the adjusted voltage, thereby increasing the high-voltage time, increasing the power consumption of the terminal, and reducing the response speed of the terminal.
Disclosure of Invention
Embodiments of the present application are expected to provide a voltage control circuit, a voltage control method, a chip, a terminal, and a readable storage medium, which can reduce power consumption of the terminal and improve response speed of the terminal.
The technical scheme of the application is realized as follows:
the embodiment of the application provides a voltage control circuit, includes:
the voltage feedback module and the voltage comparison module are connected, and the input end of the voltage feedback module is connected with at least one load; the output end of the voltage feedback module is connected with the power supply circuit; the power supply circuit is connected with at least one load and used for providing voltage for the at least one load; the input end of the voltage comparison module is respectively connected with the output end of the voltage feedback module and the power supply input end corresponding to the at least one load; the output end of the voltage comparison module is connected with the at least one load; wherein,
the voltage feedback module is used for determining a target voltage according to a voltage regulation application initiated by a first load in the at least one load; sending the target voltage to the power supply circuit and the voltage comparison module;
the power supply circuit is used for adjusting the voltage provided by the at least one load according to the target voltage;
the voltage comparison module is used for detecting the current voltage of the at least one load and sending a voltage regulation completion signal to the first load when the current voltage reaches the target voltage.
The embodiment of the application provides a voltage control method, which is applied to a chip, wherein the chip comprises a voltage control circuit provided by the embodiment of the application; the method comprises the following steps:
determining a target voltage according to a voltage regulation application initiated by a first load of at least one load through a voltage feedback module; sending the target voltage to a power supply circuit and the voltage comparison module so that the power supply circuit adjusts the voltage provided on the at least one load according to the target voltage;
and detecting the current voltage on the at least one load through a voltage comparison module, and sending the voltage regulation completion signal to the first load under the condition that the current voltage reaches the target voltage.
The embodiment of the present application provides a chip, including: the voltage control circuit, the memory and the processor provided by the embodiment of the application;
the memory to store executable instructions;
the processor is configured to implement the voltage control method provided by the embodiment of the application on the voltage control circuit when the processor executes the executable instructions stored in the memory.
An embodiment of the present application provides a terminal, including: the chip and the power supply circuit provided by the embodiment of the application; the power supply circuit includes: the input end, the output end and the power converter; the power supply converter is connected with at least one load through the output end of the power supply circuit; the power supply converter is connected with a power supply feedback module in the chip through the input end of the power supply circuit; the power converter is configured to adjust a voltage provided at the at least one load according to the target voltage sent by the power feedback module. .
The embodiment of the application provides a computer-readable storage medium, which stores executable instructions for causing a processor to execute, so as to implement the voltage control method provided by the embodiment of the application.
Embodiments of the present application provide a computer program product, which includes a computer program or instructions, and the computer program or instructions, when executed by a processor, implement the voltage control method provided by embodiments of the present application.
The embodiment of the application provides a voltage control circuit, a voltage control method, a chip, a terminal and a readable storage medium. Therefore, under the condition that the current voltage of at least one load reaches the target voltage, a voltage regulation completion signal can be sent to the first load in time to inform the first load of finishing voltage regulation, so that the first load can adjust the corresponding working frequency according to the service requirement, the waiting time of the first load and the high-voltage duration time of the power supply circuit are shortened, the response speed of the terminal is improved, and the power consumption of the terminal is reduced.
Drawings
Fig. 1 is a schematic diagram of an alternative structure of a DVFS control system;
FIG. 2 is a schematic timing diagram illustrating an alternative embodiment of a DVFS control system;
fig. 3 is an alternative structural schematic diagram of a voltage control circuit according to an embodiment of the present disclosure;
fig. 4 is an alternative structural schematic diagram of a voltage control circuit according to an embodiment of the present application;
fig. 5 is an alternative structural schematic diagram of a voltage control circuit according to an embodiment of the present disclosure;
fig. 6 is an alternative flow chart of a voltage control method according to an embodiment of the present disclosure;
fig. 7 is an alternative schematic structural diagram of a voltage control circuit applied to an actual scene according to an embodiment of the present disclosure;
fig. 8 is an optional schematic flow chart of a voltage control method applied to an actual scene according to an embodiment of the present disclosure;
fig. 9 is a schematic timing flowchart corresponding to a voltage control circuit and a voltage control method according to an embodiment of the present disclosure;
fig. 10 is an alternative structural schematic diagram of a chip according to an embodiment of the present application.
Detailed Description
In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the attached drawings, the described embodiments should not be considered as limiting the present application, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.
In the following description, references to the terms "first \ second \ third" are only to distinguish similar objects and do not denote a particular order, but rather the terms "first \ second \ third" are used to interchange specific orders or sequences, where appropriate, so as to enable the embodiments of the application described herein to be practiced in other than the order shown or described herein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application.
At present, the operating frequency of a digital circuit and the required voltage are positively correlated, and the higher the operating frequency is, the higher the required voltage is. Higher voltage, in turn, means higher power consumption. In the low Power design of digital circuits, a conventional DVFS control circuit is shown in fig. 1, and includes a Power Management Chip (PMIC) and a System On Chip (SOC). The PMIC comprises a Direct Current-Direct Current (DC-DC) converter, and performs data interaction with the SOC through a PMIC interface; the DCDC is used for providing a power supply VDD for the SOC; n subsystems (subsystem 1, subsystem 2, 8230; subsystem N) are hung under a power supply VDD. Here, the N subsystems are N digital circuit modules mounted in the same power domain VDD, and each subsystem is powered by the power domain VDD. At the same time, the working states of the subsystems are different, so that the N voltage values (namely, the voltage value 1, the voltage value 2 \8230, and the voltage value N) corresponding to the N subsystems are also different. To meet the voltage requirements of all subsystems, VDD needs to be greater than or equal to the highest of the N voltage values. Here, the voting manager in fig. 1 is configured to select a highest voltage value of the N voltage values, and feed back the highest voltage value to the PMIC through the PMIC interface, so that the PMIC powers the N subsystems according to the highest voltage value.
Based on the DVFS control circuit of fig. 1, the timing diagram of the DVFS may include T1-T77 times as shown in fig. 2, where:
at the time of T1, when a certain service is about to start and a higher frequency needs to be operated, the subsystem initiates a boost application and sends a voltage value required by the subsystem to the voting manager. The voting manager receives the voltage values sent by the subsystems, and selects the highest voltage value V2 from the voltage values. The voting manager sends the voltage value V2 to the PMIC through the PMIC interface, and after the PMIC receives the voltage value V2, the PMIC sends the voltage value V2 to the DCDC.
At time T2, the DCDC receives the voltage value V2 and starts boosting according to the voltage value V2.
At time T3, after the voltage adjustment in the period from T2 to T3, the voltage on VDD is adjusted from V1 to V2, and the boosting is completed.
However, since the subsystem does not know when the voltage on VDD reaches V2, after the subsystem initiates the voltage regulation application at time T1, it will wait for a fixed period of time Tw to ensure that the voltage regulation is complete. Therefore, the subsystem will not increase the operation frequency until T4, and start to perform the corresponding service.
Here, since the time period from the initiation of the boost request to the completion of the boost, i.e. the time period from T1 to T3, fluctuates or varies with the PMIC load condition, the fixed waiting time Tw generally considers a certain time margin (e.g. the time period from T3 to T4) to ensure that Tw is greater than the time period from T1 to T3. Therefore, the subsystem can start to increase the frequency after the VDD1 is boosted, so as to ensure the normal operation of the subsystem.
And at the moment T5, the subsystem service is ended, the frequency is reduced, meanwhile, a voltage reduction application is initiated, and the voltage value required by the subsystem service is sent to the voting manager. The voting manager will also select the maximum value of each subsystem voltage at time T5. Illustratively, the maximum voltage value chosen by the voting manager at time T5 may be V1. The voting manager sends the voltage value V1 to DCDC1 in the PMIC for voltage regulation.
At time T6, DCDC1 starts voltage regulation based on voltage value V1.
At time T7, VDD1 regulation is finished. The entire DVFS process is completed.
To sum up, the whole control process of the present DVFS scheme is open-loop, and after a subsystem initiates a voltage regulation application and sends a voltage value required by the subsystem to a voting manager, a blind waiting stage is entered, the subsystem does not know when the voltage can be regulated to a target voltage value actually, and needs to wait for a fixed period of time before starting to perform a service, so that the time of working under high voltage is increased, the power consumption is increased, and the response speed of a terminal is reduced. In addition, when the subsystem initiates a boost application, but the PMIC does not perform boost correctly due to some faults, the subsystem in the SOC does not know the voltage abnormality and continues to boost the frequency, so that the subsystem works abnormally, thereby reducing the stability of the terminal service.
In the present application, by analyzing the above sequence flow, it can be seen that the subsystem actual service time Tr is a time period from the time T4 to the time T5, and the high voltage actual duration time Th is a time period from the time T3 to the time T6. In order to ensure the normal operation of the subsystem service, th is greater than or equal to Tr. And in the case where Th is greater than or equal to Tr, the shorter the high voltage time Th, the lower the power consumption of the terminal. For Th, that is, in a time period from the time T3 to the time T6, the time T4 to the time T5 is the actual service time, and if the time is shortened, service abnormality is caused; the time from time T5 to time T6 is a relatively fixed period of time for the voting manager to vote and send a command to the PMIC. Therefore, the high voltage time Th can be shortened by shortening the time margin from the time T3 to the time T4, thereby reducing power consumption and improving the response speed of the terminal.
Based on the technical idea, embodiments of the present application provide a voltage control method, an apparatus, a terminal, and a computer-readable storage medium, which can reduce power consumption of the terminal and improve response speed of the terminal.
Referring to fig. 3, fig. 3 is an alternative structural schematic diagram of a voltage control circuit provided in an embodiment of the present application, and will be described with reference to the steps shown in fig. 3.
The voltage control circuit 20 provided in the embodiment of the present application includes: the voltage feedback module 22 and the voltage comparison module 21, wherein the input end of the voltage feedback module 22 is connected with at least one load 30; the output end of the voltage feedback module 22 is connected with the power supply circuit 10; the supply circuit 10 is connected to at least one load 30. For providing a voltage to at least one load 30; the input end of the voltage comparison module 21 is respectively connected with the output end of the voltage feedback module 22 and the power input end corresponding to at least one load 30; the output end of the voltage comparison module 21 is connected with at least one load 30; wherein,
the voltage feedback module is used for determining a target voltage according to a voltage regulation application initiated by a first load in at least one load; sending the target voltage to a power supply circuit and voltage comparison module;
a power supply circuit for adjusting a voltage provided across at least one load according to a target voltage;
and the voltage comparison module is used for detecting the current voltage on at least one load and sending a voltage regulation completion signal to the first load under the condition that the current voltage reaches the target voltage.
In the embodiment of the present application, the first load may be any one of the at least one load. And under the condition that the first load determines to adjust the current working frequency of the first load to the target working frequency according to the service to be operated, the first load initiates a voltage regulation application. The voltage regulating application comprises a first voltage corresponding to the target working frequency. The first load sends the voltage regulation application to the input end of the voltage feedback module.
In the embodiment of the application, at least one load is in the same power domain, and the power supply circuit supplies power to the at least one load through the power supply input end of the power domain. In some embodiments, the at least one load may be at least one subsystem in a chip or system-on-chip on which the voltage control circuit is located. Illustratively, the at least one subsystem may be at least one core in a Central Processing Unit (CPU) chip. Or, the at least one load and the voltage control circuit may be disposed on different chips and connected to each other, so that the voltage control circuit can detect a current voltage across the at least one load and send a voltage regulation completion signal to the first load when the current voltage reaches a target voltage.
In some embodiments, the voltage feedback module may determine the target voltage according to a first voltage in the voltage regulation application; and feeding the target voltage back to the power supply circuit.
In an embodiment of the present application, a power supply circuit includes: input end, output end and power converter. The power converter supplies power to at least one load through the output terminal. The power converter receives the target voltage sent by the voltage feedback module through the input end; the voltage provided across the at least one load is adjusted in accordance with the target voltage.
In some embodiments, the voltage adjustment of the power supply circuit may include a step-up or step-down. When the target voltage is greater than the current output voltage of the power supply circuit, the power supply circuit boosts the voltage by using a power supply converter; and when the target voltage is lower than the current output voltage of the power supply circuit, the power supply circuit performs voltage reduction by using the power supply converter.
In some embodiments, the power supply circuit may directly adjust the target voltage as the target value of the voltage adjustment, and adjust the output voltage to the target voltage through the voltage adjustment process. Or, the power supply circuit may also add a certain margin to the target voltage to obtain a target value for voltage adjustment, so as to prevent the output voltage from fluctuating above and below the target voltage and from affecting the normal service on the load. The specific selection is performed according to actual conditions, and the embodiments of the present application are not limited.
In some embodiments, the Power supply circuit may be a PMIC chip, the Power converter may be a DC-DC converter in the PMIC chip, and the input terminal of the Power supply circuit may be a PMIC Interface, which is interconnected with a corresponding PMIC Interface in the Power feedback module via a communication bus, such as a System Power Management Interface (SPMI) bus. Alternatively, the power supply circuit may be another circuit having power generation and voltage regulation functions. The specific selection is performed according to actual conditions, and the embodiments of the present application are not limited.
In the embodiment of the application, a certain time period is required for the power supply circuit to adjust the voltage according to the target voltage, for example, a time period from T2 to T3 corresponding to the voltage boosting process in fig. 2, or a time period from T2 to T3 corresponding to the voltage reducing process. The voltage comparison module is used for detecting voltage at a power supply input end corresponding to at least one load and determining the current voltage on the at least one load. In some embodiments, the voltage comparison module may perform voltage detection on the power input terminal corresponding to the at least one load according to a preset time interval, and determine the current voltage, so as to implement real-time voltage detection. Therefore, the voltage comparison module can timely detect that the current voltage reaches the target voltage, send the voltage regulation signal to the first load, timely inform the first load of the completion of voltage regulation, and shorten the waiting time of the first load.
In some embodiments, when the first load receives the voltage regulation completion signal, the first load adjusts its operating frequency, and operates the service corresponding to the voltage regulation application by using the target voltage.
In some embodiments, the voltage comparison module may also send a voltage regulation completion signal to the at least one load to notify the at least one load that the voltage of the current power supply has been adjusted to the target voltage, in case it is detected that the current voltage reaches the target voltage. Here, the voltage regulation completion signal may include a value of the target voltage. Therefore, under the condition that the first load and other loads in at least one load receive the voltage regulation completion signal, whether the working frequency is adjusted or not can be determined according to the working frequency required by the self-running service, and the service running is carried out under the target voltage.
It can be understood that, in the embodiment of the present application, in the process that the power supply module adjusts the voltage across the at least one load according to the target voltage fed back by the voltage feedback module, the current voltage across the at least one load is detected by the voltage comparison module, and the current voltage is compared with the target voltage in real time. Therefore, under the condition that the current voltage of at least one load reaches the target voltage, a voltage regulation completion signal can be sent to the first load in time to inform the first load of finishing voltage regulation, so that the first load can adjust the corresponding working frequency according to the service requirement, the waiting time of the first load and the high-voltage duration time of the power supply circuit are shortened, the response speed of the terminal is improved, and the power consumption of the terminal is reduced.
In some embodiments, as shown in fig. 4, the first output 221 of the voltage feedback module 22 is connected to the input 100 of the power supply circuit; the first input 222 of the voltage feedback module 22 is connected to at least one load 30; the first input terminal 211 of the voltage comparison module 21 is connected to the power input terminal 310 of the at least one load 30; the second input end 212 of the voltage comparison module 21 is connected with the first output end 221 of the voltage feedback module; the output terminal 213 of the voltage comparison module 21 is connected to the second input terminal 223 of the voltage feedback module 22, and the second output terminal 224 of the voltage feedback module 22 is connected to at least one load 30; wherein,
the output end of the voltage comparison module is used for outputting a voltage regulation completion signal to the second input end of the voltage feedback module; and the voltage feedback module is used for sending the voltage regulation completion signal to the first load under the condition of receiving the voltage regulation completion signal.
In this embodiment, the output terminal of the voltage comparison module may be connected to the voltage feedback module, so that a voltage regulation completion signal may be fed back to the at least one load by using the connection between the voltage feedback module and the at least one load. Here, the voltage comparison module may output a voltage regulation completion signal to the voltage feedback module through the output terminal when detecting that the current voltage reaches the target voltage, and the voltage feedback module transmits the received voltage regulation signal to a first load of the at least one load through the second output terminal. Thereby reducing circuit complexity.
Here, the power supply module is electrically connected to the power input terminal corresponding to the at least one load to supply power to the at least one load. The voltage feedback module is connected with the at least one load through a signal to receive a first voltage sent by a first load in the at least one load or send a voltage regulation completion signal to the first load.
In some embodiments, at least one current load voltage corresponding to at least one load is recorded in the voltage feedback module; the voltage feedback module is further used for determining the current maximum load voltage in the at least one current load voltage; and determining a target voltage according to the first voltage and the current maximum load voltage.
In the embodiment of the application, under the condition that at least one load starts to work, the current load voltage corresponding to the load is sent to the voltage feedback module, so that the voltage feedback module can record at least one current load voltage corresponding to at least one load. Or, when any load of the at least one load receives the voltage regulation completion signal and completes the voltage regulation, the voltage feedback module may also update the current load voltage corresponding to the load. In this way, the voltage feedback module may determine a current maximum load voltage of the at least one current load voltage when receiving a voltage regulation application including a first voltage corresponding to the first load; and determining a target voltage according to the first voltage and the current maximum load voltage.
In the embodiment of the application, the power supply circuit supplies power to the at least one load according to the maximum value of the at least one current load voltage; the present maximum load voltage thus corresponds to the present voltage at the at least one load before the supply voltage is adjusted.
In some embodiments, the voltage feedback module may be implemented as a voting manager of the digital circuit, and the current maximum load voltage is selected from the at least one current load voltage and the first voltage, and determined as the target voltage. Alternatively, a circuit in other analog or digital forms may be used as the voltage feedback module to realize the function of selecting the current maximum load voltage as the target voltage. The specific selection is performed according to actual conditions, and the embodiments of the present application are not limited.
In some embodiments, the current voltage measured by the voltage comparison module from the power input end corresponding to the at least one load is an analog signal value; the voltage feedback module can be implemented as a digital circuit, so that the target voltage determined according to the voltage regulation application is a digital signal value. Thus, the target voltage of the digital signal value needs to be subjected to digital-to-analog conversion and then compared with the current voltage. The voltage comparison module may include: a digital-to-analog converter and a voltage comparator; the digital-to-analog converter is used for performing digital-to-analog conversion on the target voltage and determining an analog signal value of the target voltage; transmitting the analog signal value of the target voltage to a voltage comparator; and the voltage comparator is used for comparing the analog signal value of the target voltage with the current voltage and sending a voltage regulation completion signal to the first load through the voltage comparator under the condition that the current voltage reaches the analog signal value of the target voltage.
In some embodiments, based on fig. 4, as shown in fig. 5, the second input terminal 212 of the voltage comparison module 21 is an input terminal of the digital-to-analog converter 22, that is, the digital-to-analog converter 22 is connected to the first output terminal 221 of the voltage feedback module 22 through the second input terminal 212. An output of the digital-to-analog converter 22 is connected to a second input 2121 of the voltage comparator 23. The first input terminal of the voltage comparator 23 is the first input terminal 211 of the voltage comparison module 21, that is, the voltage comparator 23 is connected to the power input terminal corresponding to the at least one load 30 through the first input terminal 211. The output terminal of the voltage comparator 23 is the output terminal 213 of the voltage comparison module 21, that is, the voltage comparator 23 is connected to the second input terminal 223 of the voltage feedback module 22 through the output terminal 213. In this way, the digital-to-analog converter 22 may perform digital-to-analog conversion on the target voltage received through the second input end 212 of the voltage feedback module 22 to determine an analog signal value of the target voltage; the analog signal value of the target voltage is transmitted to the voltage comparator 23 through the second input terminal 2121 of the voltage comparator 23. The voltage comparator 23 may compare the analog signal value of the target voltage with the current voltage of the at least one load 30 detected through the first input terminal 211, and send a voltage regulation completion signal to the second input terminal 223 of the voltage feedback module 22 through the output terminal 213 of the voltage comparison module when the current voltage reaches the analog signal value of the target voltage; upon receiving the voltage regulation complete signal, the voltage feedback module 22 sends the voltage regulation complete signal to the first load of the at least one load connection 30 via the second output 224.
It can be understood that the target voltage in the form of a digital signal is converted into the form of an analog signal by the digital-to-analog conversion circuit and the voltage comparator, so that the voltage feedback module in the form of a digital circuit can be compatible, and the circuit compatibility is improved.
In some embodiments, the voltage feedback module comprises: a voting manager; a first output of the voting manager, e.g., first output 221, is coupled to an input of the power supply circuit; a first input of the voting manager, such as first input 222, is connected to at least one load;
the voting manager is used for receiving a voltage regulation application through a first input end; and under the condition that the first voltage in the voltage regulation application is greater than the current maximum load voltage, the first voltage is taken as a target voltage, and the target voltage is sent to the power supply circuit through the first output end.
In some embodiments, the voting manager is further configured to send a voltage regulation complete signal to the first load if the first voltage is less than or equal to the maximum load voltage.
In this embodiment of the application, the voltage feedback module may be implemented as a voting manager in a digital circuit form, and the voting manager determines the target voltage according to the first voltage in the voltage regulation application and a current maximum load voltage in at least one current load voltage recorded in the voting manager, when receiving the voltage regulation application sent by the first load. Exemplarily, in the case that the first voltage is greater than the current maximum load voltage, which indicates that the current maximum load voltage cannot meet the requirement of a voltage regulation application initiated by the first load, the voting manager takes the first voltage as a target voltage and sends the target voltage to the power supply circuit through the first output terminal to notify the power supply circuit to perform voltage regulation according to the target voltage. And under the condition that the first voltage is less than or equal to the maximum load voltage, the current maximum load voltage can meet the voltage regulation application initiated by the first load, and the voting manager directly sends a voltage regulation completion signal to the first load.
In some embodiments, a second input of the voting manager, such as second input 223, is connected to the output of the voltage comparison module; a second output of the voting manager, such as second output 224, is connected to at least one load; the voting manager is also used for receiving the voltage regulation completion signal sent by the voltage comparison module through the second input end; and feeding the voltage regulation completion signal back to the first load through the second output end, and updating the current maximum load voltage to the target voltage.
Here, the voting manager, upon receiving the voltage regulation complete signal, indicates that the supply circuit has completed voltage regulation on the at least one load. And the voting manager sends the voltage regulation completion signal to the first load and informs the first load of completing voltage regulation, so that the first load can regulate the working frequency according to the target voltage and run the service under the target voltage. And the voting manager takes the target voltage as the current load voltage corresponding to the first load, namely, the current maximum load voltage in at least one load is updated to the target voltage.
It can be understood that the first load starts to adjust the working frequency only when receiving the voltage regulation completion signal, thereby solving the problem that the service fails or works abnormally due to the fact that the load does not know that the voltage regulation fails and adjusts the working frequency after blindly waiting for a period of time because some fault voltage regulation fails in the power supply circuit in the prior related technical scheme, and improving the stability of the terminal service.
The embodiment of the application provides a voltage control method, which is applied to a chip on a terminal, wherein the chip comprises the voltage control circuit according to any one of the embodiments. As shown in fig. 6, the voltage control method provided by the embodiment of the present application may be implemented by performing the processes of S101-S102 as follows:
s101, determining a target voltage according to a voltage regulation application initiated by a first load in at least one load through a voltage feedback module; and sending the target voltage to the power supply circuit and voltage comparison module to enable the power supply circuit to adjust the voltage provided on the at least one load according to the target voltage.
S102, detecting the current voltage on at least one load through a voltage comparison module, and sending a voltage regulation completion signal to the first load when the current voltage reaches a target voltage.
Here, the processes of S101 to S102 are consistent with the descriptions of the working processes of the corresponding modules in the voltage control circuit, and are not described again here.
In some embodiments, the sending the voltage regulation completion signal to the first load in the case that the current voltage reaches the target voltage in S102 includes:
D/A conversion is carried out on the target voltage through a D/A converter in the voltage comparison module, and the analog signal value of the target voltage is determined;
and comparing the analog signal value of the target voltage with the current voltage through a voltage comparator in the voltage comparison module, and sending a voltage regulation completion signal to the first load under the condition that the current voltage reaches the analog signal value of the target voltage.
In some embodiments, the determining, by the voltage feedback module, the target voltage according to the voltage regulation application initiated by the first load of the at least one load includes:
determining, by a voltage feedback module, a present maximum load voltage of at least one present load voltage; and determining a target voltage according to the first voltage and the current maximum load voltage.
In some embodiments, the determining the target voltage according to the first voltage and the current maximum load voltage includes:
and taking the first voltage as a target voltage when the first voltage is larger than the current maximum load voltage.
In some embodiments, the voltage control method provided in the embodiments of the present application further includes:
and recording the target voltage as the current maximum load voltage under the condition that the voltage regulation completion signal sent by the voltage comparison module is received by the voltage feedback module.
In some embodiments, the voltage control method provided in the embodiments of the present application further includes:
and under the condition that the first voltage is less than or equal to the current maximum load voltage, sending a voltage regulation completion signal to the first load through the voltage feedback module.
It can be understood that, in the embodiment of the present application, in the process that the power supply module adjusts the voltage across the at least one load according to the target voltage fed back by the voltage feedback module, the current voltage across the at least one load is detected by the voltage comparison module, and the current voltage is compared with the target voltage in real time. Therefore, under the condition that the current voltage of at least one load reaches the target voltage, a voltage regulation completion signal can be sent to the first load in time to inform the first load of finishing voltage regulation, so that the first load can adjust the corresponding working frequency according to the service requirement, the waiting time of the first load and the high-voltage duration time of the power supply circuit are shortened, the response speed of the terminal is improved, and the power consumption of the terminal is reduced. And the load starts to adjust the working frequency under the condition of receiving the voltage regulation completion signal, thereby solving the problems of service failure or abnormal working caused by that the load does not know the voltage regulation failure due to the voltage regulation failure of some faults and adjusts the working frequency after blindly waiting for a period of time in the current related technical scheme, and improving the stability of the terminal service.
Next, an exemplary application of the voltage control circuit and the voltage control method in the embodiment of the present application in a practical application scenario will be described with reference to fig. 7 and 8.
An embodiment of the present application provides a DVFS control circuit, as shown in fig. 7, including a PMIC chip and an SOC chip. Here, the PMIC chip corresponds to a power supply circuit, and the voltage control circuit in the SOC chip includes: a voting manager, a voltage comparator, and a Digital-to-Analog Converter (DAC); the SOC chip includes at least one subsystem (subsystem 1, subsystem 2, 8230; subsystem N), corresponding to at least one load as described above. At least one subsystem is in the same power domain VDD1, and the PMIC chip is used for supplying power to the power domain VDD 1. Here, as shown in fig. 7, the analog voltage signal output from the PMIC chip may be filtered by the first inductor L1 and the first capacitor C1. Based on fig. 7, the voltage control method provided in the embodiment of the present application may be as shown in fig. 8, as follows:
s201, the first subsystem initiates a boosting application and sends a first voltage to the voting manager.
In S201, the first subsystem may be any one of the subsystems 1 to N, and corresponds to the first load. The boost application corresponds to the above-mentioned voltage regulation application. The boost application includes the first voltage.
S202, the voting manager compares the first voltage with the current voltage value to determine whether voltage regulation is needed. If yes, go to S203; if not, executing S208;
in S202, the voting manager receives the boost application, and according to the first voltage and a current voltage value of the at least one subsystem, where the current voltage value is a maximum value of a required voltage value of the at least one subsystem recorded in the voting manager before the voltage regulation application is received. Under the condition that the first voltage is larger than the current voltage value, the voting manager determines that voltage regulation is needed; in the event that the first voltage is less than or equal to the current voltage value, the voting manager determines that voltage regulation is not required.
S203, the voting manager sends the target voltage to the PMIC and the DAC.
And S204, starting voltage regulation by the PMIC.
And S205, converting the target voltage into an analog signal value of the target voltage by the DAC.
In S205, the DAC converts the digital signal value of the target voltage from the voting manager into an analog signal value, which is used as a reference voltage of the voltage comparator. In some embodiments, the voltage comparator may be a single limit comparator, a hysteretic comparator, a window comparator, a tri-state voltage comparator, or the like; the specific selection is performed according to actual conditions, and the embodiments of the present application are not limited.
S206, the voltage comparator compares the current voltage with the analog signal value of the target voltage.
In S206, the voltage comparator detects the current voltage of the power domain VDD1 in real time, and compares the detected current voltage with the analog signal value of the target voltage sent by the DAC.
And S207, when the current voltage reaches the target voltage, the voltage comparator sends a voltage regulation completion signal to the voting manager.
And S208, the voting manager sends a voltage regulation completion signal to the subsystem.
In S208, when the voting manager receives the voltage regulation completion signal transmitted from the voltage comparator, the voting manager transmits a voltage regulation completion signal to the first subsystem. Or, when the first voltage is less than or equal to the current voltage value, the voting manager determines that the voltage regulation is not needed, that is, after the first subsystem sends the first voltage to the voting manager, if the current voltage value is higher than the first voltage required by the first subsystem due to the operation of other subsystems at a higher voltage, it indicates that the voltage boosting is not needed, and at this time, the voting manager may directly send a voltage regulation completion signal to the first subsystem.
S209, the first subsystem increases the working frequency and starts the service.
It can be seen that, with the voltage control circuit composed of the DAC and the voltage comparator provided in the embodiment of the present application, once the actual voltage of the power input terminal VDD1 is adjusted to the target voltage, the voltage comparator can send a voltage regulation completion signal to the voting manager, and the voting manager sends a voltage regulation completion signal to the subsystem at the same time, so that the subsystem can immediately know that voltage regulation is completed, improve the frequency to start a service, and does not need to wait for a period of time. In some embodiments, a timing flow diagram of a DVFS control circuit of an embodiment of the present application may be as shown in fig. 9. The moment T1' is the moment when the first subsystem initiates a boosting application and sends a first voltage to the voting manager; the time T2' is the time when the DCDC1 receives the target voltage sent by the voting manager and starts to boost according to the target voltage; the time T3' is the time when the voltage boosting is finished, the first subsystem receives a voltage regulation finishing signal and starts to operate the service under the target voltage; the time T4' is the time when the first subsystem finishes the service and sends a voltage reduction application to the voting manager; the time T5' is the time when the DCDC1 starts voltage reduction according to the target voltage of the voltage reduction application; time T6' is the time when depressurization is completed.
It can be seen that, under the condition that the DVFS control circuit according to the embodiment of the present application boosts the voltage to the target voltage at time T3', the first subsystem may immediately receive the voltage regulation completion signal to start the service. Thus, compared to fig. 2, the time period of constant wait at high level of T3-T4 in fig. 2 is saved, and the high level duration Th' in the embodiment of the present application is smaller than the high level duration Th in the related art currently under the condition of ensuring the subsystem service running time Tr. Therefore, the response speed of the system is improved, and the power consumption of the terminal is reduced.
It can be understood that, in the embodiment of the present application, through a voltage detection circuit composed of a DAC and a voltage comparator, an open-loop control process of sending a voltage regulation application from a subsystem in the related art, blindly waiting for a fixed time by the subsystem until the frequency of the subsystem is raised is optimized to send a voltage regulation application for the subsystem, waiting for voltage regulation completion signal feedback by the subsystem, and raising the frequency of the subsystem in a closed-loop control process, so that the system response speed is increased, and the terminal power consumption is reduced.
An embodiment of the present application provides a chip, as shown in fig. 10, where the chip 2 includes: the voltage control circuit 25, the memory 22, and the processor 23 provided in the embodiment of the present application;
the memory 22 for storing executable instructions;
the processor 23 is configured to, when executing the executable instructions stored in the memory 22, implement the voltage control method provided in the embodiment of the present application on the voltage control circuit 25.
In some embodiments, the at least one load comprises: at least one subsystem on the chip; the at least one subsystem is in the same power domain.
The embodiment of the present application further provides a terminal, and the chip and the power supply circuit provided in the above embodiment may be integrated in the terminal 3. Referring to fig. 10, the chip 2 may include a voltage control circuit 25, a processor 23, and a memory 22 storing processor-executable instructions; the processor 23 and the memory 22 communicate via a communication bus 24; processor 23 may retrieve and execute executable instructions from memory 22 to implement the voltage control method provided by the embodiments of the present application on voltage control circuit 25. The power supply circuit includes: the input end, the output end and the power converter; the power supply converter is connected with at least one load through the output end of the power supply circuit; the power supply converter is connected with a power supply feedback module in the chip through the input end of the power supply circuit; the power converter is configured to adjust a voltage provided at the at least one load according to the target voltage sent by the power feedback module.
In some embodiments, the terminal provided in the embodiments of the present application may be implemented as various types of user terminals such as a notebook computer, a tablet computer, a desktop computer, a set-top box, a mobile device (e.g., a mobile phone, a portable music player, a personal digital assistant, a dedicated messaging device, a portable game device), and the like. The specific choice is made according to actual conditions, and the embodiment of the application is not limited.
Embodiments of the present application provide a computer-readable storage medium storing executable instructions, which when executed by a processor, will cause the processor to execute the voltage control method provided by the embodiments of the present application.
In some embodiments, the computer-readable storage medium may be memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash, magnetic surface memory, optical disk, or CD-ROM; or may be various devices including one or any combination of the above memories.
In some embodiments, executable instructions may be written in any form of programming language (including compiled or interpreted languages), in the form of programs, software modules, scripts or code, and may be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment.
By way of example, executable instructions may correspond, but do not necessarily have to correspond, to files in a file system, and may be stored in a portion of a file that holds other programs or data, such as in one or more scripts stored in a hypertext Markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub-programs, or portions of code).
By way of example, executable instructions may be deployed to be executed on one computing device or on multiple computing devices at one site or distributed across multiple sites and interconnected by a communication network.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, and improvement made within the spirit and scope of the present application are included in the protection scope of the present application.
Claims (17)
1. A voltage control circuit, comprising: the voltage feedback module and the voltage comparison module are connected, and the input end of the voltage feedback module is connected with at least one load; the output end of the voltage feedback module is connected with the power supply circuit; the power supply circuit is connected with at least one load and used for providing voltage for the at least one load; the input end of the voltage comparison module is respectively connected with the output end of the voltage feedback module and the power supply input end corresponding to the at least one load; the output end of the voltage comparison module is connected with the at least one load; wherein,
the voltage feedback module is used for determining a target voltage according to a voltage regulation application initiated by a first load in the at least one load; sending the target voltage to the power supply circuit and the voltage comparison module;
the power supply circuit is used for adjusting the voltage provided by the at least one load according to the target voltage;
the voltage comparison module is used for detecting the current voltage of the at least one load and sending a voltage regulation completion signal to the first load when the current voltage reaches the target voltage.
2. The circuit of claim 1, wherein the first output of the voltage feedback module is coupled to an input of the power supply circuit; the first input end of the voltage feedback module is connected with at least one load; the first input end of the voltage comparison module is connected with the power supply input end; the second input end of the voltage comparison module is connected with the first output end of the voltage feedback module; the output end of the voltage comparison module is connected with the second input end of the voltage feedback module, and the second output end of the voltage feedback module is connected with the at least one load; wherein,
the output end of the voltage comparison module is used for outputting the voltage regulation completion signal to the second input end of the voltage feedback module;
and the voltage feedback module is used for sending the voltage regulation completion signal to the first load under the condition of receiving the voltage regulation completion signal.
3. A circuit according to claim 1 or 2, wherein the present voltage is an analog signal value; the target voltage is a digital signal value; the voltage comparison module includes: a digital-to-analog converter and a voltage comparator; wherein,
the digital-to-analog converter is used for performing digital-to-analog conversion on the target voltage and determining an analog signal value of the target voltage; transmitting an analog signal value of the target voltage to the voltage comparator;
and the voltage comparator is used for comparing the analog signal value of the target voltage with the current voltage and sending the voltage regulation completion signal to the first load through the voltage comparator under the condition that the current voltage reaches the analog signal value of the target voltage.
4. The circuit of claim 1 or 2, wherein the voltage regulation application comprises: a first voltage; at least one current load voltage corresponding to the at least one load is recorded in the voltage feedback module;
the voltage feedback module is further configured to determine a current maximum load voltage of the at least one current load voltage; and determining the target voltage according to the first voltage and the current maximum load voltage.
5. The circuit of claim 4, wherein the voltage feedback module comprises: a voting manager; the first output end of the voting manager is connected with the input end of the power supply circuit; a first input of the voting manager is connected to the at least one load;
the voting manager is used for receiving the voltage regulation application through a first input end; and taking the first voltage as the target voltage and sending the target voltage to the power supply circuit through the first output end under the condition that the first voltage is greater than the current maximum load voltage.
6. The circuit of claim 5, wherein a second input of the voting manager is coupled to an output of the voltage comparison module; a second output of the voting manager is connected to the at least one load;
the voting manager is also used for receiving the voltage regulation completion signal sent by the voltage comparison module through a second input end; and feeding the voltage regulation completion signal back to the first load through a second output end, and updating the current maximum load voltage to the target voltage.
7. The circuit of claim 5 or 6, wherein the voting manager is further configured to send the voltage regulation complete signal to the first load if the first voltage is less than or equal to the current maximum load voltage.
8. A voltage control method, applied to a chip comprising a voltage control circuit according to any one of claims 1 to 7; the method comprises the following steps:
determining a target voltage according to a voltage regulation application initiated by a first load of at least one load through a voltage feedback module; sending the target voltage to a power supply circuit and the voltage comparison module so that the power supply circuit adjusts the voltage provided on the at least one load according to the target voltage;
and detecting the current voltage on the at least one load through a voltage comparison module, and sending the voltage regulation completion signal to the first load under the condition that the current voltage reaches the target voltage.
9. The method of claim 8, wherein sending the voltage regulation complete signal to the first load if the current voltage reaches the target voltage comprises:
performing digital-to-analog conversion on the target voltage through a digital-to-analog converter in the voltage comparison module to determine an analog signal value of the target voltage;
and comparing the analog signal value of the target voltage with the current voltage through a voltage comparator in the voltage comparison module, and sending the voltage regulation completion signal to the first load under the condition that the current voltage reaches the analog signal value of the target voltage.
10. The method of claim 8, wherein the voltage adjustment application comprises: a first voltage; at least one current load voltage corresponding to the at least one load is recorded in the voltage feedback module; the determining, by the voltage feedback module, the target voltage according to a voltage regulation application initiated by a first load of the at least one load includes:
determining, by the voltage feedback module, a present maximum load voltage of at least one present load voltage; and determining the target voltage according to the first voltage and the current maximum load voltage.
11. The method of claim 10, wherein determining the target voltage based on the first voltage and the current maximum load voltage comprises:
taking the first voltage as the target voltage when the first voltage is greater than the current maximum load voltage.
12. The method of claim 11, further comprising:
and recording the target voltage as the current maximum load voltage under the condition that the voltage regulation completion signal sent by the voltage comparison module is received by the voltage feedback module.
13. The method of claim 10, further comprising:
and sending the voltage regulation completion signal to the first load through the voltage feedback module under the condition that the first voltage is less than or equal to the current maximum load voltage.
14. A chip, comprising: the voltage control circuit, memory and processor of any of claims 1-7;
the memory to store executable instructions;
the processor, when executing the executable instructions stored in the memory, is configured to implement the voltage control method of any one of claims 8 to 13 on the voltage control circuit.
15. The chip of claim 14, wherein the at least one load comprises: at least one subsystem on the chip; the at least one subsystem is in the same power domain.
16. A terminal, comprising: the chip of claim 14 or 15 and a power supply circuit; the power supply circuit includes: the input end, the output end and the power converter; the power supply converter is connected with at least one load through the output end of the power supply circuit; the power supply converter is connected with a power supply feedback module in the chip through the input end of the power supply circuit; the power converter is configured to adjust a voltage provided at the at least one load according to the target voltage sent by the power feedback module.
17. A computer-readable storage medium having stored thereon executable instructions for causing a processor, when executing the instructions, to implement the method of any one of claims 8 to 13.
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| CN202211666142.2A CN115793766A (en) | 2022-12-23 | 2022-12-23 | Voltage control circuit, method, chip, terminal and readable storage medium |
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| CN202211666142.2A CN115793766A (en) | 2022-12-23 | 2022-12-23 | Voltage control circuit, method, chip, terminal and readable storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116682338A (en) * | 2023-06-16 | 2023-09-01 | 昆山迈致治具科技有限公司 | Voltage control circuit and universal screen test board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116682338A (en) * | 2023-06-16 | 2023-09-01 | 昆山迈致治具科技有限公司 | Voltage control circuit and universal screen test board |
| CN116682338B (en) * | 2023-06-16 | 2023-12-22 | 昆山迈致治具科技有限公司 | Voltage control circuit and universal screen test board |
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