CN118137824A - Power supply control system and method - Google Patents

Power supply control system and method Download PDF

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Publication number
CN118137824A
CN118137824A CN202410206717.5A CN202410206717A CN118137824A CN 118137824 A CN118137824 A CN 118137824A CN 202410206717 A CN202410206717 A CN 202410206717A CN 118137824 A CN118137824 A CN 118137824A
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power supply
voltage
interrupt task
current moment
control signal
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赵慧冬
吴明磊
常亨通
赵雪龙
乔树山
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Institute of Microelectronics of CAS
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Institute of Microelectronics of CAS
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00Conversion of DC power input into DC power output
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/0003Details of control, feedback or regulation circuits

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Power Sources (AREA)

Abstract

The disclosure provides a power supply control system and a method, which can be applied to the technical field of integrated circuit design. The system comprises: the power supply system comprises an electric quantity sensing module, a performance sensing module, a minimum energy point tracking module and a mode control module, wherein the electric quantity sensing module is configured to collect power supply voltage data of a power supply at the current moment; the performance sensing module is configured to determine a first operating voltage based on a priority of the interrupt task in response to the interrupt task being triggered, and send the first operating voltage to the mode control module; the minimum energy point tracking module is configured to determine a second working voltage based on the power supply voltage data and send the second working voltage to the mode control module if the interrupt task is not triggered or if the interrupt task has been completed; the mode control module is configured to generate a voltage control signal based on the supply voltage data, the first operating voltage, or the second operating voltage, and to control an output voltage of the power supply using the voltage control signal.

Description

电源控制系统及方法Power supply control system and method

技术领域Technical Field

本公开涉及集成电路设计技术领域,更具体地,涉及一种电源控制系统及方法。The present disclosure relates to the technical field of integrated circuit design, and more specifically, to a power supply control system and method.

背景技术Background technique

随着无线传感器节点、医疗保健设备、绿色高效工业、智能家居和城市等领域的研究兴趣不断增长和快速发展,片上系统(System on Chip,SOC)等芯片大多需要使用具有最小外形尺寸和数十年使用寿命且维护最少的电池来保持活动状态。With the growing research interest and rapid development in areas such as wireless sensor nodes, healthcare devices, green and efficient industries, smart homes and cities, chips such as System on Chip (SOC) mostly need to use batteries with smallest form factor and decades of service life with minimal maintenance to stay active.

为了优化SoC芯片的功耗和性能,通常采用动态电压和频率调节(DynamicVoltage and Frequency Scaling,DVFS)以及占空比控制、多模式控制等方式。然而,在追求低功耗的情况下,盲目降低电压会增大电路延迟,从而缩短SoC芯片的使用寿命。In order to optimize the power consumption and performance of SoC chips, dynamic voltage and frequency scaling (DVFS), duty cycle control, multi-mode control, etc. are usually used. However, in the pursuit of low power consumption, blindly reducing the voltage will increase circuit delay, thereby shortening the service life of the SoC chip.

公开内容Public Content

有鉴于此,本公开提供了一种电源控制系统及方法。In view of this, the present disclosure provides a power control system and method.

本公开的一个方面提供了一种电源控制系统,包括:电量感知模块、性能感知模块、最小能量点追踪模块、模式控制模块,上述电量感知模块,被配置为采集当前时刻下电源的供电电压数据,并分别向上述最小能量点跟踪模块和上述模式控制模块发送上述供电电压数据;上述性能感知模块,被配置为响应于中断任务被触发,基于上述中断任务的优先级,确定第一工作电压,并向上述模式控制模块发送上述第一工作电压;上述最小能量点跟踪模块,被配置为在上述中断任务未被触发或上述中断任务已完成的情况下,基于上述供电电压数据确定第二工作电压,并向上述模式控制模块发送上述第二工作电压;上述模式控制模块被配置为基于上述供电电压数据、上述第一工作电压或上述第二工作电压,生成电压控制信号,利用上述电压控制信号控制上述电源的输出电压。One aspect of the present disclosure provides a power control system, including: a power sensing module, a performance sensing module, a minimum energy point tracking module, and a mode control module, wherein the power sensing module is configured to collect the power supply voltage data of the power supply at the current moment, and send the power supply voltage data to the minimum energy point tracking module and the mode control module respectively; the performance sensing module is configured to determine a first working voltage based on the priority of the interrupt task in response to an interrupt task being triggered, and send the first working voltage to the mode control module; the minimum energy point tracking module is configured to determine a second working voltage based on the power supply voltage data when the interrupt task is not triggered or the interrupt task is completed, and send the second working voltage to the mode control module; the mode control module is configured to generate a voltage control signal based on the power supply voltage data, the first working voltage or the second working voltage, and use the voltage control signal to control the output voltage of the power supply.

根据本公开的实施例,上述最小能量点追踪模块包括计数单元、最小能量点追踪单元,上述计时单元被配置为在上述中断任务未被触发或上述中断任务已完成的情况下,基于上述供电电压数据,获取与上述当前时刻下电源的供电电压对应的第一数字时钟周期,基于预设电压阈值,对上述当前时刻下电源的供电电压进行调整,得到新的当前时刻下电源的供电电压,并获取与上述新的当前时刻下电源的供电电压对应的第二数字时钟周期;上述最小能量点追踪单元被配置为对上述计时单元输出的上述第一数字时钟周期和上述第二数字时钟周期进行比较,得到比较结果,若上述比较结果表征第一数字时钟周期小于上述第二数字时钟周期,将上述当前时刻下电源的供电电压更新为上述新的当前时刻下电源的供电电压,并基于上述预设电压阈值,再次对上述新的当前时刻下电源的供电电压进行调整;若上述比较结果表征第一数字时钟周期大于或等于上述第二数字时钟周期,将上述当前时刻下电源的供电电压确定为上述第二工作电压,并向上述模式控制模块发送上述第二工作电压。According to an embodiment of the present disclosure, the minimum energy point tracking module includes a counting unit and a minimum energy point tracking unit. The timing unit is configured to obtain a first digital clock cycle corresponding to the power supply voltage of the power supply at the current moment based on the power supply voltage data when the interrupt task is not triggered or the interrupt task is completed, adjust the power supply voltage of the power supply at the current moment based on a preset voltage threshold, obtain a new power supply voltage of the power supply at the current moment, and obtain a second digital clock cycle corresponding to the new power supply voltage of the power supply at the current moment; the minimum energy point tracking unit is configured to compare the first digital clock cycle and the second digital clock cycle output by the timing unit to obtain a comparison result. If the comparison result indicates that the first digital clock cycle is less than the second digital clock cycle, the power supply voltage of the power supply at the current moment is updated to the new power supply voltage of the power supply at the current moment, and the new power supply voltage of the power supply at the current moment is adjusted again based on the preset voltage threshold; if the comparison result indicates that the first digital clock cycle is greater than or equal to the second digital clock cycle, the power supply voltage of the power supply at the current moment is determined as the second working voltage, and the second working voltage is sent to the mode control module.

根据本公开的实施例,上述性能感知模块包括多个输入/输出接口,上述输入/输出接口被配置为接收上述中断任务;其中,上述性能感知模块被配置为在目标输入/输出接口接收上述中断任务的情况下,基于上述目标输入/输出接口的优先级属性,确定上述中断任务的优先级,基于上述中断任务的优先级,确定与上述中断任务对应的第一工作电压,并向上述模式控制模块发送第一工作电压,其中,上述目标输入/输出接口属于上述多个输入/输出接口。According to an embodiment of the present disclosure, the above-mentioned performance perception module includes multiple input/output interfaces, and the above-mentioned input/output interfaces are configured to receive the above-mentioned interrupt tasks; wherein, the above-mentioned performance perception module is configured to determine the priority of the above-mentioned interrupt task based on the priority attribute of the above-mentioned target input/output interface when the target input/output interface receives the above-mentioned interrupt task, determine the first operating voltage corresponding to the above-mentioned interrupt task based on the priority of the above-mentioned interrupt task, and send the first operating voltage to the above-mentioned mode control module, wherein the above-mentioned target input/output interface belongs to the above-mentioned multiple input/output interfaces.

根据本公开的实施例,上述电压控制信号包括第一电压控制信号、第二电压控制信号;在上述中断任务被触发的情况下,上述模式选择单元被配置为:在上述第一工作电压大于或等于与上述供电电压数据对应的上述当前时刻下电源的供电电压的情况下,生成上述第一电压控制信号,其中,上述第一电压控制信号用于维持上述电源的输出电压,使得上述电源的输出电压与上述当前时刻下电源的供电电压相等;在上述第一工作电压小于与上述供电电压数据对应的当前时刻下电源的供电电压的情况下,生成上述第二电压控制信号,其中,上述第二电压控制信号用于向下调节上述电源的输出电压。According to an embodiment of the present disclosure, the above-mentioned voltage control signal includes a first voltage control signal and a second voltage control signal; when the above-mentioned interrupt task is triggered, the above-mentioned mode selection unit is configured to: when the above-mentioned first working voltage is greater than or equal to the power supply voltage of the power supply at the above-mentioned current moment corresponding to the above-mentioned power supply voltage data, generate the above-mentioned first voltage control signal, wherein the above-mentioned first voltage control signal is used to maintain the output voltage of the above-mentioned power supply so that the output voltage of the above-mentioned power supply is equal to the power supply voltage of the power supply at the above-mentioned current moment; when the above-mentioned first working voltage is less than the power supply voltage of the power supply at the current moment corresponding to the above-mentioned power supply voltage data, generate the above-mentioned second voltage control signal, wherein the above-mentioned second voltage control signal is used to downwardly regulate the output voltage of the above-mentioned power supply.

根据本公开的实施例,上述电压控制信号还包括第三控制信号;在上述中断任务未被触发或上述中断任务已完成的情况下,上述模式选择单元被配置为:基于上述第二工作电压,生成上述第三电压控制信号,使得上述电源的输出电压与上述第二工作电压相等。According to an embodiment of the present disclosure, the above-mentioned voltage control signal also includes a third control signal; when the above-mentioned interrupt task is not triggered or the above-mentioned interrupt task is completed, the above-mentioned mode selection unit is configured to: generate the above-mentioned third voltage control signal based on the above-mentioned second working voltage, so that the output voltage of the above-mentioned power supply is equal to the above-mentioned second working voltage.

根据本公开的实施例,上述电源控制系统还包括休眠待机模块,上述休眠待机模块被配置为在监控到上述当前时刻下电源的供电电压不满足基准电压阈值的情况下,关断开关电源域电源,利用能量收集器对上述电源进行充电,在检测到上述当前时刻下电源的供电电压满足上述基准电压阈值的情况下,恢复上述开关电源域电源。According to an embodiment of the present disclosure, the power control system further includes a sleep standby module, which is configured to, when monitoring that the power supply voltage of the power supply at the current moment does not meet the reference voltage threshold, shut down the switching power domain power supply, charge the power supply using an energy collector, and restore the switching power domain power supply when detecting that the power supply voltage of the power supply at the current moment meets the reference voltage threshold.

本公开的另一个方面提供了一种应用于上述系统的电源控制方法,包括:采集当前时刻下电源的供电电压数据;响应于中断任务被触发,基于上述中断任务的优先级,确定第一工作电压;在上述中断任务未被触发或上述中断任务已完成的情况下,基于上述供电电压数据确定第二工作电压;基于上述供电电压数据、上述第一工作电压或上述第二工作电压,生成电压控制信号,利用上述电压控制信号控制上述电源的输出电压。Another aspect of the present disclosure provides a power control method applied to the above-mentioned system, including: collecting power supply voltage data of the power supply at the current moment; in response to an interrupt task being triggered, determining a first operating voltage based on the priority of the above-mentioned interrupt task; when the above-mentioned interrupt task is not triggered or the above-mentioned interrupt task has been completed, determining a second operating voltage based on the above-mentioned power supply voltage data; based on the above-mentioned power supply voltage data, the above-mentioned first operating voltage or the above-mentioned second operating voltage, generating a voltage control signal, and using the above-mentioned voltage control signal to control the output voltage of the above-mentioned power supply.

根据本公开的实施例,上述在上述中断任务未被触发或上述中断任务已完成的情况下,基于上述供电电压数据确定第二工作电压包括:在上述中断任务未被触发或上述中断任务已完成的情况下,基于上述供电电压数据,获取与上述当前时刻下电源的供电电压对应的第一数字时钟周期;基于预设电压阈值,对上述当前时刻下电源的供电电压进行调整,得新的当前时刻下电源的供电电压,并获取与上述新的当前时刻下电源的供电电压对应的第二数字时钟周期;对上述第一数字时钟周期和上述第二数字时钟周期进行比较,得到比较结果,若比较结果表征第一数字时钟周期小于上述第二数字时钟周期,将上述当前时刻下电源的供电电压更新为上述新的当前时刻下电源的供电电压,并基于上述预设电压阈值,再次对上述新的当前时刻下电源的供电电压进行调整,若比较结果表征第一数字时钟周期大于或等于上述第二数字时钟周期,将上述当前时刻下电源的供电电压确定为上述第二工作电压。According to an embodiment of the present disclosure, when the interrupt task is not triggered or the interrupt task is completed, determining the second working voltage based on the power supply voltage data includes: when the interrupt task is not triggered or the interrupt task is completed, obtaining a first digital clock cycle corresponding to the power supply voltage of the power supply at the current moment based on the power supply voltage data; adjusting the power supply voltage of the power supply at the current moment based on a preset voltage threshold to obtain a new power supply voltage of the power supply at the current moment, and obtaining a second digital clock cycle corresponding to the new power supply voltage of the power supply at the current moment; comparing the first digital clock cycle with the second digital clock cycle to obtain a comparison result, if the comparison result indicates that the first digital clock cycle is less than the second digital clock cycle, updating the power supply voltage of the power supply at the current moment to the new power supply voltage of the power supply at the current moment, and adjusting the new power supply voltage of the power supply at the current moment again based on the preset voltage threshold, if the comparison result indicates that the first digital clock cycle is greater than or equal to the second digital clock cycle, determining the power supply voltage of the power supply at the current moment as the second working voltage.

根据本公开的实施例,上述响应于中断任务被触发,基于上述中断任务的优先级和上述供电电压数据,确定第一工作电压包括:在目标输入/输出接口接收上述中断任务的情况下,基于上述目标输入/输出接口的优先级属性,确定上述中断任务的优先级;基于上述中断任务的优先级和上述供电电压数据,确定与上述中断任务对应的第一工作电压。According to an embodiment of the present disclosure, in response to an interrupt task being triggered, determining the first operating voltage based on the priority of the interrupt task and the power supply voltage data includes: in a case where the target input/output interface receives the interrupt task, determining the priority of the interrupt task based on the priority attribute of the target input/output interface; and determining the first operating voltage corresponding to the interrupt task based on the priority of the interrupt task and the power supply voltage data.

根据本公开的实施例,上述基于上述供电电压数据、上述第一工作电压或上述第二工作电压,生成电压控制信号,利用上述电压控制信号控制上述电源的输出电压包括:上述电压控制信号包括第一电压控制信号、第二电压控制信号、第三电压控制信号;在上述中断任务被触发的情况下,在上述第一工作电压大于或等于与上述供电电压数据对应的上述当前时刻下电源的供电电压的情况下,生成上述第一电压控制信号,其中,上述第一电压控制信号用于维持上述电源的输出电压,使得上述电源的输出电压与上述当前时刻下电源的供电电压相等;在上述第一工作电压小于与上述供电电压数据对应的当前时刻下电源的供电电压的情况下,生成上述第二电压控制信号,其中,上述第二电压控制信号用于向下调节上述电源的输出电压;在上述中断任务未被触发或上述中断任务已完成的情况下,基于上述第二工作电压,生成上述第三电压控制信号,使得上述电源的输出电压与上述第二工作电压相等;利用上述电压控制信号控制上述电源的输出电压。According to an embodiment of the present disclosure, the voltage control signal is generated based on the power supply voltage data, the first working voltage or the second working voltage, and the output voltage of the power supply is controlled by the voltage control signal, including: the voltage control signal includes a first voltage control signal, a second voltage control signal and a third voltage control signal; when the interrupt task is triggered, when the first working voltage is greater than or equal to the power supply voltage of the power supply at the current moment corresponding to the power supply voltage data, the first voltage control signal is generated, wherein the first voltage control signal is used to maintain the output voltage of the power supply so that the output voltage of the power supply is equal to the power supply voltage of the power supply at the current moment; when the first working voltage is less than the power supply voltage of the power supply at the current moment corresponding to the power supply voltage data, the second voltage control signal is generated, wherein the second voltage control signal is used to adjust the output voltage of the power supply downward; when the interrupt task is not triggered or the interrupt task is completed, the third voltage control signal is generated based on the second working voltage so that the output voltage of the power supply is equal to the second working voltage; and the output voltage of the power supply is controlled by the voltage control signal.

根据本公开的实施例,在设置有电量感知模块、性能感知模块、最小能量点追踪模块、模式控制模块的电源控制系统中,基于当前时刻下的供电电压数据和芯片实际运行情况生成电压控制信号,在处理中断任务时通过电压控制信号动态调整电源的输出电压,从而保证电源控制系统高效运行,在等待中断任务时通过电压控制信号降低该系统的动态功耗和静态功耗,从而延长电池使用时间和芯片的使用寿命。According to an embodiment of the present disclosure, in a power control system provided with a power sensing module, a performance sensing module, a minimum energy point tracking module, and a mode control module, a voltage control signal is generated based on the power supply voltage data at the current moment and the actual operation status of the chip. When processing an interrupt task, the output voltage of the power supply is dynamically adjusted through the voltage control signal, thereby ensuring the efficient operation of the power control system. When waiting for an interrupt task, the dynamic power consumption and static power consumption of the system are reduced through the voltage control signal, thereby extending the battery life and the service life of the chip.

附图说明BRIEF DESCRIPTION OF THE DRAWINGS

通过以下参照附图对本公开实施例的描述,本公开的上述以及其他目的、特征和优点将更为清楚,在附图中:The above and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

图1示意性示出了根据本公开实施例的电源控制系统的结构框图;FIG1 schematically shows a structural block diagram of a power supply control system according to an embodiment of the present disclosure;

图2示意性示出了根据本公开具体实施例的电源控制系统的结构框图;FIG2 schematically shows a structural block diagram of a power supply control system according to a specific embodiment of the present disclosure;

图3示意性示出了根据本公开具体实施例的电源控制系统的示意图;FIG3 schematically shows a schematic diagram of a power supply control system according to a specific embodiment of the present disclosure;

图4示意性示出了根据本公开实施例的电源控制方法的流程图;FIG4 schematically shows a flow chart of a power supply control method according to an embodiment of the present disclosure;

图5示意性示出了根据本公开具体实施例的电源控制方法的电压变化示意图。FIG5 schematically shows a voltage variation diagram of a power supply control method according to a specific embodiment of the present disclosure.

具体实施方式Detailed ways

以下,将参照附图来描述本公开的实施例。但是应该理解,这些描述只是示例性的,而并非要限制本公开的范围。在下面的详细描述中,为便于解释,阐述了许多具体的细节以提供对本公开实施例的全面理解。然而,明显地,一个或多个实施例在没有这些具体细节的情况下也可以被实施。此外,在以下说明中,省略了对公知结构和技术的描述,以避免不必要地混淆本公开的概念。Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

在此使用的术语仅仅是为了描述具体实施例,而并非意在限制本公开。在此使用的术语“包括”、“包含”等表明了上述特征、步骤、操作和/或部件的存在,但是并不排除存在或添加一个或多个其他特征、步骤、操作或部件。The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise", "include", etc. used herein indicate the existence of the above-mentioned features, steps, operations and/or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

在此使用的所有术语(包括技术和科学术语)具有本领域技术人员通常所理解的含义,除非另外定义。应注意,这里使用的术语应解释为具有与本说明书的上下文相一致的含义,而不应以理想化或过于刻板的方式来解释。All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

在使用类似于“A、B和C等中至少一个”这样的表述的情况下,一般来说应该按照本领域技术人员通常理解该表述的含义来予以解释(例如,“具有A、B和C中至少一个的系统”应包括但不限于单独具有A、单独具有B、单独具有C、具有A和B、具有A和C、具有B和C、和/或具有A、B、C的系统等)。When using expressions such as "at least one of A, B, and C", they should generally be interpreted according to the meaning of the expression commonly understood by technical personnel in this field (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and/or A, B, C, etc.).

当前,随着无线传感器节点、医疗保健设备、绿色高效工业、智能家居和城市等领域的研究兴趣不断增长和快速发展,片上系统(System on Chip,SOC)等芯片需要与能量收集器自主工作,以直接使用来自环境的能量,或者通过使用具有最小外形尺寸和数十年使用寿命且维护最少的电池来保持活动状态。Currently, with the growing research interest and rapid development in the fields of wireless sensor nodes, healthcare devices, green and efficient industries, smart homes and cities, chips such as System on Chip (SOC) need to work autonomously with energy harvesters to directly use energy from the environment or to stay active by using batteries with minimal form factor and decades of service life with minimal maintenance.

因此,在物联网(Internet of Things,IoT)SoC芯片中选择采用功率扩展技术以延长芯片的使用寿命,特别是在这些设备由尺寸不断缩小的能量收集器供电的情况下,由于能量存储节点较小,因此最大限度地减少了外形尺寸,使得物联网SoC芯片的有功功率实现了从毫瓦级降低到微瓦级、纳瓦级,甚至皮瓦级。Therefore, power extension technology is chosen in Internet of Things (IoT) SoC chips to extend the service life of the chips, especially when these devices are powered by energy harvesters that are shrinking in size. Since the energy storage nodes are small, the form factor is minimized, allowing the active power of IoT SoC chips to be reduced from milliwatts to microwatts, nanowatts, and even picowatts.

为了优化SoC芯片的功耗和性能,现有技术通常采用动态电压和频率调节(Dynamic Voltage and Frequency Scaling,DVFS)以及占空比控制、多模式控制等方式。数字电路中每次操作的最佳能耗可以通过使用电源电压或亚阈值电源电压来实现。然而,在追求低功耗的情况下,盲目降低电压会增大电路延迟,从而缩短SoC芯片的使用寿命。In order to optimize the power consumption and performance of SoC chips, existing technologies usually adopt dynamic voltage and frequency scaling (DVFS), duty cycle control, multi-mode control and other methods. The optimal energy consumption of each operation in a digital circuit can be achieved by using power supply voltage or subthreshold power supply voltage. However, in the pursuit of low power consumption, blindly reducing the voltage will increase circuit delay, thereby shortening the service life of the SoC chip.

有鉴于此,本公开的实施例通过搭建设置有电量感知模块、性能感知模块、最小能量点追踪模块、模式控制模块的电源控制系统,基于当前时刻下的供电电压数据和芯片实际运行情况生成电压控制信号,在处理中断任务时通过电压控制信号动态调整电源的输出电压,从而保证电源控制系统高效运行,在等待中断任务时通过电压控制信号降低该系统的动态功耗和静态功耗,从而延长电池使用时间和芯片的使用寿命。In view of this, the embodiments of the present disclosure construct a power control system equipped with a power sensing module, a performance sensing module, a minimum energy point tracking module, and a mode control module, and generate a voltage control signal based on the power supply voltage data at the current moment and the actual operation status of the chip. When processing an interrupt task, the output voltage of the power supply is dynamically adjusted through the voltage control signal, thereby ensuring the efficient operation of the power control system. When waiting for an interrupt task, the dynamic power consumption and static power consumption of the system are reduced through the voltage control signal, thereby extending the battery life and the service life of the chip.

具体地,本公开的实施例提供了一种电源控制系统及方法。该系统包括模式控制模块、电量感知模块、性能感知模块、最小能量点追踪模块,电量感知模块,被配置为采集当前时刻下电源的供电电压数据,并分别向最小能量点跟踪模块和模式控制模块发送供电电压数据;性能感知模块,被配置为响应于中断任务被触发,基于中断任务的优先级和供电电压数据,确定第一工作电压,并向模式控制模块发送第一工作电压;最小能量点跟踪模块,被配置为在中断任务未被触发或中断任务已完成的情况下,基于供电电压数据确定第二工作电压,并向模式控制模块发送第二工作电压;模式控制模块被配置为基于供电电压数据、第一工作电压或第二工作电压,生成电压控制信号,利用电压控制信号控制电源的输出电压。Specifically, the embodiment of the present disclosure provides a power control system and method. The system includes a mode control module, a power sensing module, a performance sensing module, and a minimum energy point tracking module. The power sensing module is configured to collect the power supply voltage data of the power supply at the current moment, and send the power supply voltage data to the minimum energy point tracking module and the mode control module respectively; the performance sensing module is configured to respond to the interrupt task being triggered, based on the priority and power supply voltage data of the interrupt task, determine the first working voltage, and send the first working voltage to the mode control module; the minimum energy point tracking module is configured to determine the second working voltage based on the power supply voltage data when the interrupt task is not triggered or the interrupt task is completed, and send the second working voltage to the mode control module; the mode control module is configured to generate a voltage control signal based on the power supply voltage data, the first working voltage or the second working voltage, and use the voltage control signal to control the output voltage of the power supply.

需要说明的是,本公开实施例中的流程图所示的操作除非明确说明不同操作之间存在执行的先后顺序,或者不同操作在技术实现上存在执行的先后顺序,否则,多个操作之间的执行顺序可以不分先后,多个操作也可以同时执行。It should be noted that, unless it is explicitly stated that there is a sequence of execution between different operations shown in the flowchart in the embodiments of the present disclosure, or there is a sequence of execution between different operations in technical implementation, otherwise, the execution order of multiple operations may not be prioritized, and multiple operations may also be executed simultaneously.

图1示意性示出了根据本公开实施例的电源控制系统的结构框图。FIG1 schematically shows a structural block diagram of a power supply control system according to an embodiment of the present disclosure.

如图1所示,该电源控制系统包括电量感知模块110、性能感知模块120和最小能量点追踪模块130、模式控制模块140。As shown in FIG. 1 , the power control system includes a power sensing module 110 , a performance sensing module 120 , a minimum energy point tracking module 130 , and a mode control module 140 .

根据本公开的实施例,电量感知模块110被配置为采集当前时刻下电源的供电电压数据,并分别向最小能量点追踪模块130和模式控制模块140发送供电电压数据,其中,供电电压数据可以包括当前时刻下电源的供电电压、电源基准电压、当前时刻下电源的剩余电量等数据。According to an embodiment of the present disclosure, the power sensing module 110 is configured to collect the power supply voltage data of the power supply at the current moment, and send the power supply voltage data to the minimum energy point tracking module 130 and the mode control module 140 respectively, wherein the power supply voltage data may include the power supply voltage of the power supply at the current moment, the power supply reference voltage, the remaining power of the power supply at the current moment and other data.

根据本公开的实施例,由于物联网SoC芯片由电池供电,因此,可以采用电量感知模块110基于长时间下电池消耗情况以及剩余电量调整该系统的功率和性能。According to an embodiment of the present disclosure, since the IoT SoC chip is powered by a battery, the power sensing module 110 can be used to adjust the power and performance of the system based on the battery consumption over a long period of time and the remaining power.

根据本公开的实施例,性能感知模块120被配置为响应于中断任务被触发,基于中断任务的优先级,确定第一工作电压,并向模式控制模块140发送第一工作电压,其中,中断任务可以来自外接设备,第一工作电压可以用于表征根据中断任务的优先级确定的系统处理该中断任务所需的电压。According to an embodiment of the present disclosure, the performance perception module 120 is configured to determine a first operating voltage in response to an interrupt task being triggered based on the priority of the interrupt task, and send the first operating voltage to the mode control module 140, wherein the interrupt task may come from an external device, and the first operating voltage may be used to characterize the voltage required for the system to process the interrupt task determined according to the priority of the interrupt task.

根据本公开的实施例,性能感知模块120可以被配置为基于中断任务的不同优先级调整该系统的功率和性能。According to an embodiment of the present disclosure, the performance awareness module 120 may be configured to adjust the power and performance of the system based on different priorities of interrupt tasks.

根据本公开的实施例,最小能量点跟踪模块130被配置为在中断任务未被触发或中断任务已完成的情况下,基于供电电压数据确定第二工作电压,并向模式控制模块发送第二工作电压。其中,第二工作电压可以用于表征系统在等待其他终端任务时,最小能量点跟踪模块130所确定的与最小动态能量点对应的低功耗工作电压。According to an embodiment of the present disclosure, the minimum energy point tracking module 130 is configured to determine the second operating voltage based on the power supply voltage data and send the second operating voltage to the mode control module when the interrupt task is not triggered or the interrupt task is completed. The second operating voltage can be used to characterize the low-power operating voltage corresponding to the minimum dynamic energy point determined by the minimum energy point tracking module 130 when the system is waiting for other terminal tasks.

根据本公开的实施例,在最小能量点跟踪模块130中,可以采用斜坡追踪算法,基于当前时刻下的供电电压数据,逐步逼近最小动态功耗点,从而确定与该最小动态功耗点对应的低功耗工作电压。According to an embodiment of the present disclosure, in the minimum energy point tracking module 130, a ramp tracking algorithm can be used to gradually approach the minimum dynamic power consumption point based on the power supply voltage data at the current moment, thereby determining a low-power operating voltage corresponding to the minimum dynamic power consumption point.

根据本公开的实施例,模式控制模块140被配置为基于供电电压数据、第一工作电压或第二工作电压,生成电压控制信号,利用电压控制信号控制电源的输出电压。According to an embodiment of the present disclosure, the mode control module 140 is configured to generate a voltage control signal based on the power supply voltage data, the first operating voltage or the second operating voltage, and use the voltage control signal to control the output voltage of the power supply.

本公开的实施例提供了一种设置有电量感知模块、性能感知模块、最小能量点追踪模块、模式控制模块的电源控制系统,基于当前时刻下的供电电压数据和芯片实际运行情况生成电压控制信号,在处理中断任务时通过电压控制信号动态调整电源的输出电压,从而保证电源控制系统高效运行,在等待中断任务时通过电压控制信号降低该系统的动态功耗和静态功耗,从而延长电池使用时间和芯片的使用寿命。An embodiment of the present disclosure provides a power control system provided with a power sensing module, a performance sensing module, a minimum energy point tracking module, and a mode control module. A voltage control signal is generated based on the power supply voltage data at the current moment and the actual operation status of the chip. When processing an interrupt task, the output voltage of the power supply is dynamically adjusted through the voltage control signal, thereby ensuring the efficient operation of the power control system. When waiting for an interrupt task, the dynamic power consumption and static power consumption of the system are reduced through the voltage control signal, thereby extending the battery life and the service life of the chip.

根据本公开的实施例,最小能量点追踪模块包括计数单元、最小能量点追踪单元,计时单元被配置为在中断任务未被触发或中断任务已完成的情况下,基于供电电压数据,获取与当前时刻下电源的供电电压对应的第一数字时钟周期,基于预设电压阈值,对当前时刻下电源的供电电压进行调整,得新的当前时刻下电源的供电电压,并获取与新的当前时刻下电源的供电电压对应的第二数字时钟周期;最小能量点追踪单元被配置为对计时单元输出的第一数字时钟周期和第二数字时钟周期进行比较,得到比较结果,若比较结果表征第一数字时钟周期大于或等于第二数字时钟周期,将当前时刻下电源的供电电压更新为新的当前时刻下电源的供电电压,并基于预设电压阈值,再次对新的当前时刻下电源的供电电压进行调整;若比较结果表征第一数字时钟周期小于第二数字时钟周期,将当前时刻下电源的供电电压确定为第二工作电压,并向模式切换模块发送第二工作电压。According to an embodiment of the present disclosure, the minimum energy point tracking module includes a counting unit and a minimum energy point tracking unit. The timing unit is configured to obtain a first digital clock cycle corresponding to the power supply voltage of the power supply at the current moment based on the power supply voltage data when the interrupt task is not triggered or the interrupt task is completed, and adjust the power supply voltage of the power supply at the current moment based on a preset voltage threshold to obtain a new power supply voltage of the power supply at the current moment, and obtain a second digital clock cycle corresponding to the new power supply voltage of the power supply at the current moment; the minimum energy point tracking unit is configured to compare the first digital clock cycle and the second digital clock cycle output by the timing unit to obtain a comparison result. If the comparison result indicates that the first digital clock cycle is greater than or equal to the second digital clock cycle, the power supply voltage of the power supply at the current moment is updated to the new power supply voltage of the power supply at the current moment, and the new power supply voltage of the power supply at the current moment is adjusted again based on the preset voltage threshold; if the comparison result indicates that the first digital clock cycle is less than the second digital clock cycle, the power supply voltage of the power supply at the current moment is determined as the second working voltage, and the second working voltage is sent to the mode switching module.

根据本公开的实施例,在中断任务未被触发或中断任务已完成的情况下,模式切换模块将模式切换为最小能量点追踪模式,最小能量点追踪模块开始运行。According to an embodiment of the present disclosure, when the interrupt task is not triggered or the interrupt task is completed, the mode switching module switches the mode to the minimum energy point tracking mode, and the minimum energy point tracking module starts to run.

根据本公开的实施例,最小能量点追踪模块至少包括计时单元和最小能量点追踪单元。According to an embodiment of the present disclosure, the minimum energy point tracking module at least includes a timing unit and a minimum energy point tracking unit.

根据本公开的实施例,计时单元可以被配置为基于电量感知模块发送的当前时刻下电源的供电电压数据和参考电压,最小能量点追踪单元可以将电压设置为当前时刻下电源的供电电压的最高值,并对该当前时刻下电源的供电电压进行多轮调整,直至满足低功耗电压条件。According to an embodiment of the present disclosure, the timing unit can be configured to be based on the power supply voltage data and reference voltage of the power supply at the current moment sent by the power sensing module, and the minimum energy point tracking unit can set the voltage to the highest value of the power supply voltage of the power supply at the current moment, and perform multiple rounds of adjustments to the power supply voltage of the power supply at the current moment until the low power consumption voltage condition is met.

具体地,可以将当前时刻下电源的供电电压作为初始电压,利用计时单元中的第一计时器记录电源在初始电压下的第一数字时钟周期,基于预设电压阈值,对初始电压进行向下调整,得到新的当前时刻下电源的供电电压,并利用计时单元中的第二计时器记录电源在新的当前时刻下电源的供电电压下的第二数字时钟周期。Specifically, the supply voltage of the power supply at the current moment can be used as the initial voltage, and the first timer in the timing unit can be used to record the first digital clock cycle of the power supply at the initial voltage. Based on a preset voltage threshold, the initial voltage can be adjusted downward to obtain a new supply voltage of the power supply at the current moment, and the second timer in the timing unit can be used to record the second digital clock cycle of the power supply at the new supply voltage of the power supply at the current moment.

例如,针对直流-直流转换器,该数字时钟周期可以表示该直流-直流转换器输出的纹波电压,该纹波电压的变化幅度可以配置为10mV,若将初始电压配置为0.65V,当直流-直流转换器电路中的电容充电到0.66V,再放电消耗到0.65V后,又开始充电,从0.66V消耗到0.65V的时钟周期即可作为第一数字时钟周期。For example, for a DC-DC converter, the digital clock cycle can represent the ripple voltage output by the DC-DC converter, and the variation amplitude of the ripple voltage can be configured to be 10mV. If the initial voltage is configured to be 0.65V, when the capacitor in the DC-DC converter circuit is charged to 0.66V, then discharged and consumed to 0.65V, it starts charging again. The clock cycle from 0.66V to 0.65V can be used as the first digital clock cycle.

根据本公开的实施例,第一数字时钟周期可以用于表征初始电压的纹波周期,第二数字时钟周期可以用于表征新的当前时刻下电源的供电电压的纹波周期,第一数字时钟周期和第二数字时钟周期均可以用于表征在不同供电电压下电路消耗能量的时间。According to an embodiment of the present disclosure, the first digital clock cycle can be used to characterize the ripple period of the initial voltage, the second digital clock cycle can be used to characterize the ripple period of the power supply voltage of the power supply at the new current moment, and both the first digital clock cycle and the second digital clock cycle can be used to characterize the time the circuit consumes energy under different power supply voltages.

根据本公开的实施例,预设电压阈值可以用于表征预先设置的下调电压值。例如,预设电压阈值可以设置为0.1v,若初始电压为0.65v,则根据该预设电压阈值对初始电压进行向下调整,得到的新的当前时刻下电源的供电电压即为0.64v。According to an embodiment of the present disclosure, the preset voltage threshold can be used to characterize a preset downward voltage value. For example, the preset voltage threshold can be set to 0.1v, and if the initial voltage is 0.65v, the initial voltage is adjusted downward according to the preset voltage threshold, and the new power supply voltage of the power supply at the current moment is 0.64v.

根据本公开的实施例,由于SoC芯片内部包括多个开关电源域,且每个开关电源域包含一个或多个功能内核模块,当系统切换到最小能量点追踪模式时无法确当前SoC芯片内部每个开关电源域的开断,因此可以通过最小能量点追踪单元计算最小能量点对应的最低功耗电压。According to an embodiment of the present disclosure, since the SoC chip includes multiple switching power domains and each switching power domain contains one or more functional core modules, when the system switches to the minimum energy point tracking mode, it is impossible to confirm the disconnection of each switching power domain inside the current SoC chip. Therefore, the minimum power consumption voltage corresponding to the minimum energy point can be calculated through the minimum energy point tracking unit.

根据本公开的实施例,最小能量点追踪单元可以被配置为对计时单元输出的第一数字时钟周期和第二数字时钟周期进行比较,得到比较结果,若比较结果表征第一数字时钟周期大于或等于第二数字时钟周期,则表示调整后的新的当前时刻下电源的供电电压不满足低功耗电压条件,可以将初始电压更新为新的当前时刻下电源的供电电压,并基于预设电压阈值,再次对下调后的初始电压进行调整,该过程可以进行多轮调整,直至调整后的新的当前时刻下电源的供电电压满足低功耗电压条件。According to an embodiment of the present disclosure, the minimum energy point tracking unit can be configured to compare the first digital clock cycle and the second digital clock cycle output by the timing unit to obtain a comparison result. If the comparison result indicates that the first digital clock cycle is greater than or equal to the second digital clock cycle, it means that the adjusted new power supply voltage of the power supply at the current moment does not meet the low power consumption voltage condition. The initial voltage can be updated to the new power supply voltage of the power supply at the current moment, and based on the preset voltage threshold, the lowered initial voltage can be adjusted again. This process can be performed for multiple rounds of adjustment until the adjusted new power supply voltage of the power supply at the current moment meets the low power consumption voltage condition.

根据本公开的实施例,若比较结果表征第一数字时钟周期小于第二数字时钟周期,则表示调整后的新的当前时刻下电源的供电电压满足低功耗电压条件,即可以将当前时刻下电源的供电电压确定为第二工作电压,并向模式切换模块发送第二工作电压。According to an embodiment of the present disclosure, if the comparison result indicates that the first digital clock cycle is less than the second digital clock cycle, it means that the adjusted new power supply voltage of the power supply at the current moment meets the low power consumption voltage condition, that is, the power supply voltage of the power supply at the current moment can be determined as the second operating voltage, and the second operating voltage is sent to the mode switching module.

本公开的实施例通过最小能量点追踪模块,基于电路消耗能量时间即第一数字时钟周期和第二数字时钟周期判断最小能量点对应的供电电压,通过电压下调的方式逐步逼近最小能量点,将确定的最小能量点电压作为第二工作电压,从而通过模式控制模块以第二工作电压作为电源输出电压,进而降低该系统的动态功耗和静态功耗。The embodiment of the present disclosure uses a minimum energy point tracking module to determine the power supply voltage corresponding to the minimum energy point based on the circuit energy consumption time, i.e., the first digital clock cycle and the second digital clock cycle, and gradually approaches the minimum energy point by reducing the voltage. The determined minimum energy point voltage is used as the second operating voltage, and the second operating voltage is used as the power supply output voltage through the mode control module, thereby reducing the dynamic power consumption and static power consumption of the system.

根据本公开的实施例,性能感知模块包括多个输入/输出接口,输入/输出接口被配置为接收中断任务;其中,性能感知模块被配置为在目标输入/输出接口接收中断任务的情况下,基于目标输入/输出接口的优先级属性,确定中断任务的优先级,基于中断任务的优先级,确定与中断任务对应的第一工作电压,并向模式控制模块发送第一工作电压,其中,目标输入/输出接口属于多个输入/输出接口。According to an embodiment of the present disclosure, the performance awareness module includes multiple input/output interfaces, and the input/output interfaces are configured to receive interrupt tasks; wherein, the performance awareness module is configured to determine the priority of the interrupt task based on the priority attribute of the target input/output interface when the target input/output interface receives the interrupt task, determine the first operating voltage corresponding to the interrupt task based on the priority of the interrupt task, and send the first operating voltage to the mode control module, wherein the target input/output interface belongs to multiple input/output interfaces.

根据本公开的实施例,输入/输出接口可以用于接收不同优先级的中断任务,其中,多个输入/输出接口可以被配置有不同的优先级属性。性能感知模块响应于接收到中断任务,通过对多个输入/输出接口的监控,可以确定处理该中断任务的目标输入/输出接口,并通过该目标输入/输出接口对应的优先级属性确定该中断任务的优先级。According to an embodiment of the present disclosure, an input/output interface can be used to receive interrupt tasks of different priorities, wherein a plurality of input/output interfaces can be configured with different priority attributes. In response to receiving an interrupt task, the performance perception module can determine a target input/output interface for processing the interrupt task by monitoring a plurality of input/output interfaces, and determine the priority of the interrupt task by the priority attribute corresponding to the target input/output interface.

根据本公开的实施例,基于与该中断任务对应的优先级,确定处理该中断任务所需的第一工作电压,并将映射有第一工作电压信息的电压信号发送至模式控制模块。According to an embodiment of the present disclosure, based on the priority corresponding to the interrupt task, a first operating voltage required to process the interrupt task is determined, and a voltage signal mapped with the first operating voltage information is sent to a mode control module.

例如,性能感知模块中的输入/输出接口包括通用输入/输出接口(General-purpose input/output,GPIO)、串行外设接口(Serial Peripheral interface,SPI),GPIO接口对应的优先级为高优先级,串行外设接口对应的优先级为低优先级,当性能感知模块监控到中断任务由GPIO接口处理,则可以确定该中断任务对应的优先级为高优先级,即可以确定处理高优先级中断任务所需的工作电压为6v,并将映射有工作电压为6v信息的电压信号发送至模式控制模块。For example, the input/output interface in the performance perception module includes a general-purpose input/output interface (GPIO) and a serial peripheral interface (SPI). The priority corresponding to the GPIO interface is high priority, and the priority corresponding to the serial peripheral interface is low priority. When the performance perception module monitors that the interrupt task is processed by the GPIO interface, it can be determined that the priority corresponding to the interrupt task is high priority, that is, it can be determined that the operating voltage required to process the high-priority interrupt task is 6v, and the voltage signal mapped with the operating voltage information of 6v is sent to the mode control module.

本公开的实施例通过为性能感知模块中的多个输入/输出接口配置不同的优先级属性,并基于各个输入/输出接口的优先级属性对中断任务的优先级进行监控,从而通过确定处理该中断任务所需的第一工作电压,以实现系统的电压动态调整和功率实时缩放,提高系统的工作效率和性能。The embodiments of the present disclosure configure different priority attributes for multiple input/output interfaces in a performance awareness module, and monitor the priority of the interrupt task based on the priority attributes of each input/output interface, so as to determine the first operating voltage required to process the interrupt task, thereby realizing dynamic voltage adjustment and real-time power scaling of the system, thereby improving the working efficiency and performance of the system.

根据本公开的实施例,在中断任务被触发的情况下,模式选择单元被配置为:在第一工作电压大于或等于与供电电压数据对应的当前时刻下电源的供电电压的情况下,生成第一电压控制信号,其中,第一电压控制信号用于维持电源的输出电压,使得电源的输出电压与当前时刻下电源的供电电压相等;在第一工作电压小于与供电电压数据对应的当前时刻下电源的供电电压的情况下,生成第二电压控制信号,其中,第二电压控制信号用于向下调节电源的输出电压。According to an embodiment of the present disclosure, when an interrupt task is triggered, the mode selection unit is configured to: generate a first voltage control signal when the first operating voltage is greater than or equal to the power supply voltage of the power supply at the current moment corresponding to the power supply voltage data, wherein the first voltage control signal is used to maintain the output voltage of the power supply so that the output voltage of the power supply is equal to the power supply voltage of the power supply at the current moment; and generate a second voltage control signal when the first operating voltage is less than the power supply voltage of the power supply at the current moment corresponding to the power supply voltage data, wherein the second voltage control signal is used to downwardly regulate the output voltage of the power supply.

根据本公开的实施例,模式选择模块可以包括模式选择单元和降压转换单元,其中,模式选择单元可以被配置为基于接收到的第一工作电压或第二工作电压和供电电压数据生成电压控制信号,并向降压转换单元发送电压控制信号,降压转换单元可以被配置为基于电压控制信号,通过开关周期性地闭合和打开以控制电感器调节输出电压。该降压转换单元可以包括降压型DC-DC转换器。According to an embodiment of the present disclosure, the mode selection module may include a mode selection unit and a buck conversion unit, wherein the mode selection unit may be configured to generate a voltage control signal based on the received first operating voltage or second operating voltage and supply voltage data, and send the voltage control signal to the buck conversion unit, and the buck conversion unit may be configured to control the inductor to adjust the output voltage by periodically closing and opening a switch based on the voltage control signal. The buck conversion unit may include a buck DC-DC converter.

根据本公开的实施例,降压转换单元输出的输出电压可以被配置为基于电源输入电压大小变化,随着输入电压减小,输出电压按梯度减小。According to an embodiment of the present disclosure, the output voltage output by the buck conversion unit may be configured to vary based on the magnitude of the power input voltage, and as the input voltage decreases, the output voltage decreases in a gradient.

根据本公开的实施例,在中断任务被触发的情况下,电压控制信号包括第一电压控制信号、第二电压控制信号,其中,第一电压控制信号、第二电压控制信号均可以通过模式选择单元对第一工作电压和供电电压数据进行比较得到。According to an embodiment of the present disclosure, when an interrupt task is triggered, the voltage control signal includes a first voltage control signal and a second voltage control signal, wherein the first voltage control signal and the second voltage control signal can both be obtained by comparing the first working voltage and the supply voltage data through a mode selection unit.

根据本公开的实施例,模式选择单元对供电电压数据中的当前时刻下的供电电压和第一工作电压进行比较,若第一工作电压大于或等于当前时刻下电源的供电电压,则可以生成第一电压控制信号,其中,第一电压控制信号用于维持电源的输出电压,即控制降压转换器将电源的输出电压维持在当前时刻下电源的供电电压。According to an embodiment of the present disclosure, the mode selection unit compares the power supply voltage at the current moment in the power supply voltage data and the first working voltage. If the first working voltage is greater than or equal to the power supply voltage of the power supply at the current moment, a first voltage control signal can be generated, wherein the first voltage control signal is used to maintain the output voltage of the power supply, that is, to control the step-down converter to maintain the output voltage of the power supply at the power supply voltage of the power supply at the current moment.

例如,处理当前高优先级中断任务的第一工作电压为6.2v,当前时刻下电源的供电电压为6v,则表示当前时刻下电源能够为处理高优先级中断任务提供的电压最多为6v,因此,通过比较第一工作电压和当前时刻下电源的供电电压生成第一电压控制信号,利用第一电压控制信号控制降压转换单元将电源的输出电压维持在当前电源能够提供的最大电压,即维持在6v,以最大功率处理高优先级任务。For example, the first working voltage for processing the current high-priority interrupt task is 6.2V, and the power supply voltage of the power supply at the current moment is 6V, which means that the maximum voltage that the power supply can provide for processing the high-priority interrupt task at the current moment is 6V. Therefore, a first voltage control signal is generated by comparing the first working voltage and the power supply voltage of the power supply at the current moment. The first voltage control signal is used to control the step-down conversion unit to maintain the output voltage of the power supply at the maximum voltage that the current power supply can provide, that is, maintain it at 6V, so as to process high-priority tasks with maximum power.

根据本公开的实施例,模式选择单元对供电电压数据中的当前时刻下的供电电压和第一工作电压进行比较,若第一工作电压小于当前时刻下电源的供电电压,则可以生成第二电压控制信号,其中,第二电压控制信号用于向下调节电源的输出电压。According to an embodiment of the present disclosure, the mode selection unit compares the power supply voltage at the current moment in the power supply voltage data and the first working voltage. If the first working voltage is less than the power supply voltage of the power supply at the current moment, a second voltage control signal can be generated, wherein the second voltage control signal is used to downwardly regulate the output voltage of the power supply.

例如,处理当前低优先级中断任务的第一工作电压为5v,当前时刻下电源的供电电压为6v,则表示当前时刻下电源的供电电压足够为低优先级中断任务提供工作电压,因此通过比较第一工作电压和当前时刻下电源的供电电压生成第二电压控制信号,利用第二电压控制信号控制降压转换单元对电源的输出电压进行下调,下调到5v即可处理该低优先级中断任务。For example, the first working voltage for processing the current low priority interrupt task is 5V, and the power supply voltage of the power supply at the current moment is 6V, which means that the power supply voltage of the power supply at the current moment is sufficient to provide the working voltage for the low priority interrupt task. Therefore, a second voltage control signal is generated by comparing the first working voltage and the power supply voltage of the power supply at the current moment, and the second voltage control signal is used to control the step-down conversion unit to reduce the output voltage of the power supply to 5V to process the low priority interrupt task.

本公开的实施例在中断任务被触发的情况下,模式选择单元基于电量感知模块发送的供电电压数据和性能感知模块发送的第一工作电压数据,生成不同的电压控制信号,以动态调整电源的输出电压,从而实现输出电压的灵活控制,提高芯片的能效。In an embodiment of the present disclosure, when an interrupt task is triggered, the mode selection unit generates different voltage control signals based on the power supply voltage data sent by the power sensing module and the first working voltage data sent by the performance sensing module to dynamically adjust the output voltage of the power supply, thereby achieving flexible control of the output voltage and improving the energy efficiency of the chip.

根据本公开的实施例,在中断任务未被触发或中断任务已完成的情况下,模式选择单元被配置为:基于第二工作电压,生成第三电压控制信号,使得电源的输出电压与第二工作电压相等。According to an embodiment of the present disclosure, when the interrupt task is not triggered or the interrupt task is completed, the mode selection unit is configured to generate a third voltage control signal based on the second operating voltage so that the output voltage of the power supply is equal to the second operating voltage.

根据本公开的实施例,电压控制信号还包括第三控制信号,其中,第三控制信号可以通过最小能量点追踪模块发送的第二工作电压得到。According to an embodiment of the present disclosure, the voltage control signal also includes a third control signal, wherein the third control signal can be obtained through the second operating voltage sent by the minimum energy point tracking module.

根据本公开的实施例,在中断任务未被触发或中断任务已完成的情况下,模式选择单元响应于接收到来自最小能量点追踪模块的第二工作电压,生成第三电压控制信号,利用第三电压控制信号控制降压转换单元对电源的输出电压进行下调,使得电源的输出电压与第二工作电压相等。According to an embodiment of the present disclosure, when the interrupt task is not triggered or the interrupt task is completed, the mode selection unit generates a third voltage control signal in response to receiving the second operating voltage from the minimum energy point tracking module, and uses the third voltage control signal to control the buck conversion unit to reduce the output voltage of the power supply so that the output voltage of the power supply is equal to the second operating voltage.

本公开的实施例利用第三电压控制信号控制降压转换单元对电源的输出电压进行下调,使得电源以与最小能量点对应的低功耗工作电压为输出电压运行,以降低该系统的动态功耗和静态功耗,从而在系统等待中断任务的情况下实现低功耗运行。The embodiment of the present disclosure utilizes a third voltage control signal to control the step-down conversion unit to reduce the output voltage of the power supply, so that the power supply operates with a low-power operating voltage corresponding to the minimum energy point as the output voltage, so as to reduce the dynamic power consumption and static power consumption of the system, thereby achieving low-power operation when the system is waiting for an interrupt task.

根据本公开的实施例,电源控制系统还包括休眠待机模块,休眠待机模块被配置为在检测到当前时刻下电源的供电电压不满足基准电压阈值的情况下,关断开关电源域电源,利用能量收集器对电源进行充电,在检测到当前时刻下电源的供电电压满足基准电压阈值的情况下,恢复开关电源域电源。According to an embodiment of the present disclosure, the power control system also includes a sleep standby module, which is configured to shut down the switching power domain power supply when it is detected that the power supply voltage of the power supply at the current moment does not meet the reference voltage threshold, charge the power supply using an energy collector, and restore the switching power domain power supply when it is detected that the power supply voltage of the power supply at the current moment meets the reference voltage threshold.

根据本公开的实施例,休眠待机模块可以包括多电源划分单元、电源开关、隔离单元、保持单元、电压转换单元等。According to an embodiment of the present disclosure, the sleep standby module may include a multi-power division unit, a power switch, an isolation unit, a holding unit, a voltage conversion unit, and the like.

图2示意性示出了根据本公开具体实施例的电源控制系统的结构框图。FIG2 schematically shows a structural block diagram of a power supply control system according to a specific embodiment of the present disclosure.

如图2所示,该电源控制系统包括电量感知模块110、性能感知模块120和最小能量点追踪模块130、模式控制模块140,还包括休眠待机模块210。As shown in FIG. 2 , the power control system includes a power sensing module 110 , a performance sensing module 120 , a minimum energy point tracking module 130 , a mode control module 140 , and a sleep standby module 210 .

根据本公开的实施例,当模式控制模块140监控到当前时刻下电源的供电电压小于或等于最低基准电压阈值,表示当前时刻下系统剩余电量不足,因此电源控制系统可以启动休眠待机模块210。According to an embodiment of the present disclosure, when the mode control module 140 monitors that the power supply voltage of the power supply at the current moment is less than or equal to the minimum reference voltage threshold, it means that the remaining power of the system at the current moment is insufficient, so the power control system can start the sleep standby module 210.

根据本公开的实施例,当系统启动休眠待机模块210,休眠待机模块210控制关断开关电源域电源,保留常开域电路,以处理输入/输出接口产生的中断信号,并启动能量收集器对该电源进行充电。According to an embodiment of the present disclosure, when the system starts the sleep standby module 210, the sleep standby module 210 controls to shut down the switch power domain power supply, retains the normally open domain circuit to process the interrupt signal generated by the input/output interface, and starts the energy collector to charge the power supply.

根据本公开的实施例,当模式控制模块140监控到当前时刻下电源的供电电压大于最低基准电压阈值,休眠待机模块210恢复开关电源域电源,在等待中断任务的情况下电源控制系统切换至最小能量点追踪模式,在中断任务被触发的情况下电源控制系统切换至性能感知模式。According to an embodiment of the present disclosure, when the mode control module 140 monitors that the power supply voltage of the power supply at the current moment is greater than the minimum reference voltage threshold, the sleep standby module 210 restores the power supply of the switching power domain, and the power control system switches to the minimum energy point tracking mode while waiting for the interrupt task, and switches to the performance awareness mode when the interrupt task is triggered.

本公开的实施例在监控到系统剩余电量不足的情况下,采用休眠待机模块关闭除常开电源以外的开关电源域电源,并对该电源控制系统进行充电,从而保证系统在电量不足的情况下动态功耗最小,以延长电源使用寿命的同时减少功率消耗。In the embodiment of the present disclosure, when it is monitored that the remaining power of the system is insufficient, a sleep standby module is used to shut down the switching power domain power except the normally-on power supply, and the power control system is charged, thereby ensuring that the dynamic power consumption of the system is minimized when the power is insufficient, thereby extending the service life of the power supply while reducing power consumption.

下面参考图3,结合具体实施例对电源控制系统做进一步说明Referring to FIG. 3, the power supply control system is further described in combination with a specific embodiment.

图3示意性示出了根据本公开具体实施例的电源控制系统的示意图。FIG3 schematically shows a schematic diagram of a power supply control system according to a specific embodiment of the present disclosure.

如图3所示,在一具体实施例中,该电源控制系统包括电量感知模块110、性能感知模块120、最小能量点追踪模块130、模式控制模块140,休眠待机模块210。As shown in FIG. 3 , in a specific embodiment, the power control system includes a power sensing module 110 , a performance sensing module 120 , a minimum energy point tracking module 130 , a mode control module 140 , and a sleep standby module 210 .

根据本公开的实施例,电量感知模块110可以包括晶体振荡器和模数转换器,其中,晶体振荡器可以选用电流限制振荡器,通过减小电流或限制电源供应的振荡器电路控制振荡器的频率。此外,晶体振荡器还可以为模数转换器提供时钟信号,该时钟信号可以包括微处理器时钟、寄存器时钟、模数转换器时钟、降压转换器时钟等。According to an embodiment of the present disclosure, the power sensing module 110 may include a crystal oscillator and an analog-to-digital converter, wherein the crystal oscillator may be a current-limited oscillator, and the frequency of the oscillator may be controlled by reducing the current or limiting the power supply of the oscillator circuit. In addition, the crystal oscillator may also provide a clock signal for the analog-to-digital converter, and the clock signal may include a microprocessor clock, a register clock, an analog-to-digital converter clock, a buck converter clock, etc.

根据本公开的实施例,模数转换器可以选用逐次逼近型模拟数字转换器(successive approximation register Analog-to-Digital Converter,SAR ADC),该SARADC的输入信号包括最大参考电压VH和最小参考电压VL,还包括当前时刻下电源的供电电压VIN,通过SAR ADC可以把输入信号按预设的时间间隔进行采样,并将当前时刻下电源的供电电压VIN与最大参考电压VH和最小参考电压VL的标准值相比较,使得输入信号逐次收敛,直至两种信号相等,最后输出对当前时刻下电源的供电电压VIN进行量化后4bit的供电电压数据,并将该供电电压数据通过信号1发送至模式转换模块140。According to the embodiments of the present disclosure, the analog-to-digital converter may be a successive approximation register Analog-to-Digital Converter (SAR ADC). The input signal of the SAR ADC includes a maximum reference voltage V H and a minimum reference voltage V L , and also includes a power supply voltage V IN of the power supply at the current moment. The SAR ADC may sample the input signal at a preset time interval, and compare the power supply voltage V IN of the power supply at the current moment with the standard values of the maximum reference voltage V H and the minimum reference voltage V L , so that the input signal converges successively until the two signals are equal, and finally outputs 4-bit power supply voltage data after quantizing the power supply voltage V IN of the power supply at the current moment, and sends the power supply voltage data to the mode conversion module 140 via signal 1.

根据本公开的实施例,性能感知模块120可以包括存储器SRAM、总线AXI、数据传输接口、多个输入/输出接口以及计时器,其中,多个输入/输出接口可以包括通用接口(General-purpose input/output,GPIO)、外设接口(Serial Peripheral Interface,SPI)等。According to an embodiment of the present disclosure, the performance perception module 120 may include a memory SRAM, a bus AXI, a data transmission interface, multiple input/output interfaces and a timer, wherein the multiple input/output interfaces may include a general-purpose interface (General-purpose input/output, GPIO), a peripheral interface (Serial Peripheral Interface, SPI), etc.

根据本公开的实施例,多个输入/输出接口可以被配置有不同优先级属性,用于接收不同优先级的中断任务,在目标输入/输出接口接收中断任务的情况下,基于目标输入/输出接口的优先级属性,通过数据传输接口确定中断任务对应的优先级,并基于基于中断任务的优先级,确定与中断任务对应的第一工作电压,通过信号3将第一工作电压发送至模式控制模块140。According to an embodiment of the present disclosure, multiple input/output interfaces can be configured with different priority attributes for receiving interrupt tasks of different priorities. When a target input/output interface receives an interrupt task, the priority corresponding to the interrupt task is determined through a data transmission interface based on the priority attribute of the target input/output interface, and based on the priority of the interrupt task, a first operating voltage corresponding to the interrupt task is determined, and the first operating voltage is sent to the mode control module 140 through signal 3.

根据本公开的实施例,最小能量点追踪模块130可以包括至少一个计数器和最小能量点追踪单元,其中,可以采用两个计数器分别对相邻两个电压值的数字时钟周期进行计数,例如,在中断任务未被触发或中断任务已完成的情况下,可以将当前时刻下电源的供电电压VIN作为初始电压,等待输出电压稳定,复位两个计数器,利用第一计数器获取初始电压的第一数字时钟周期,对当前时刻下电源的供电电压VIN以预设电压阈值向下调整一个梯度,利用第二计数器获取调整后新的当前时刻下电源的供电电压VIN’的第二数字时钟周期。According to an embodiment of the present disclosure, the minimum energy point tracking module 130 may include at least one counter and a minimum energy point tracking unit, wherein two counters may be used to count the digital clock cycles of two adjacent voltage values respectively. For example, when the interrupt task is not triggered or the interrupt task is completed, the power supply voltage V IN of the power supply at the current moment may be used as the initial voltage, and the output voltage is waited to be stable. The two counters are reset, and the first counter is used to obtain the first digital clock cycle of the initial voltage. The power supply voltage V IN of the power supply at the current moment is adjusted downward by a gradient with a preset voltage threshold, and the second counter is used to obtain the second digital clock cycle of the adjusted new power supply voltage V IN ' of the power supply at the current moment.

根据本公开的实施例,最小能量点追踪单元对两个计数器的计数结果进行比较,若第一数字时钟周期小于第二数字时钟周期,则表示在VIN’下电路能量消耗时间长,能量消耗的慢,因此可以将VIN’作为初始电压,并继续下调电压,反之,若第一数字时钟周期大于或等于第二数字时钟周期,则表示在VIN’下电路消耗时间短,代表消耗能量快,因此若再继续下降电压功耗将会增大,所以将VIN确定为最小能量点对应的最小功耗电压,即将VIN确定为第二工作电压,通过信号S2发送至模式控制模块140。According to an embodiment of the present disclosure, the minimum energy point tracking unit compares the counting results of the two counters. If the first digital clock cycle is less than the second digital clock cycle, it means that the circuit energy consumption time is long and the energy consumption is slow under V IN '. Therefore, V IN ' can be used as the initial voltage and the voltage can be continuously reduced. On the contrary, if the first digital clock cycle is greater than or equal to the second digital clock cycle, it means that the circuit consumption time is short under V IN ', which means that the energy consumption is fast. Therefore, if the voltage continues to decrease, the power consumption will increase. Therefore, V IN is determined as the minimum power consumption voltage corresponding to the minimum energy point, that is, V IN is determined as the second operating voltage, which is sent to the mode control module 140 through the signal S2.

根据本公开的实施例,在上述过程中可以对初始电压进行多轮调整,直至计数结果满足第一数字时钟周期大于或等于第二数字时钟周期的条件。According to an embodiment of the present disclosure, the initial voltage may be adjusted for multiple rounds in the above process until the counting result satisfies the condition that the first digital clock period is greater than or equal to the second digital clock period.

根据本公开的实施例,模式控制模块140可以包括模式控制单元和降压转换器,其中,模式控制单元可以基于信号S1、信号S2、信号S3监控当前系统剩余电量信息、多个输入/输出接口接入的中断任务信息及最小功耗电压信息,生成不同电压控制信号发送至降压转换器,模式控制单元还可以基于信号S1、信号S2、信号S3切换电源控制系统的当前运行模式。According to an embodiment of the present disclosure, the mode control module 140 may include a mode control unit and a buck converter, wherein the mode control unit may monitor the current system remaining power information, the interrupt task information accessed by multiple input/output interfaces, and the minimum power consumption voltage information based on signals S1, S2, and S3, and generate different voltage control signals to be sent to the buck converter. The mode control unit may also switch the current operating mode of the power control system based on signals S1, S2, and S3.

根据本公开的实施例,降压转换器可以基于电压控制信号,利用多个场效应管、脉冲开关、电感器等元器件实现电压转换,其中,降压转换器的脉冲开关可以根据电源的输出电压VOUT与参考电压比较得到的使能信号控制。According to an embodiment of the present disclosure, a buck converter can achieve voltage conversion based on a voltage control signal by utilizing multiple field effect transistors, pulse switches, inductors and other components, wherein the pulse switch of the buck converter can be controlled according to an enable signal obtained by comparing the output voltage V OUT of the power supply with a reference voltage.

根据本公开的实施例,在模式控制单元检测到当前系统剩余电量低于最低电量,即当前时刻下电源的供电电压VIN小于或等于最小参考电压VL的情况下,系统切换成休眠待机模式,启动休眠待机模块210。According to an embodiment of the present disclosure, when the mode control unit detects that the current remaining power of the system is lower than the minimum power, that is, the power supply voltage V IN of the power supply at the current moment is less than or equal to the minimum reference voltage V L , the system switches to the sleep standby mode and starts the sleep standby module 210.

根据本公开的实施例,休眠待机模块210关闭部分电源域电源,保留常开电源域电源,并启动能量收集器对该电源进行充电,等待当前时刻下的供电电压处于最大参考电压VH与最小参考电压VLAccording to an embodiment of the present disclosure, the sleep standby module 210 turns off part of the power domain power, retains the normally-on power domain power, and starts the energy collector to charge the power, waiting for the current supply voltage to be between the maximum reference voltage V H and the minimum reference voltage V L .

根据本公开的实施例,当模式控制模块140检测到当前时刻下电源的供电电压大于最小参考电压VL,休眠待机模块210恢复开关电源域电源。According to an embodiment of the present disclosure, when the mode control module 140 detects that the power supply voltage of the power supply at the current moment is greater than the minimum reference voltage V L , the sleep standby module 210 restores the power supply of the switching power domain.

根据本公开的实施例,在电量充足且等待中断任务的情况下,模式控制单元将电源控制系统当前的模式切换至最小能量点追踪模式,在中断任务被触发的情况下电源控制系统切换至性能感知模式。According to an embodiment of the present disclosure, when the power is sufficient and waiting for an interrupt task, the mode control unit switches the current mode of the power control system to the minimum energy point tracking mode, and when the interrupt task is triggered, the power control system switches to the performance awareness mode.

根据本公开的实施例,该电源控制系统还可以包括内核的微处理器(Microcontroller Unit,MCU)、嵌入的存储器模块例如只读存储器(Read-Only Memory,ROM)、数字信号处理器(Digital Signal Processing,DSP)模块、外接设备、时钟和复位生成块、电源开关、电压监视器等。According to an embodiment of the present disclosure, the power control system may also include a core microprocessor (Microcontroller Unit, MCU), an embedded memory module such as a read-only memory (Read-Only Memory, ROM), a digital signal processor (Digital Signal Processing, DSP) module, external devices, a clock and reset generation block, a power switch, a voltage monitor, etc.

图4示意性示出了根据本公开实施例的电源控制方法的流程图。FIG. 4 schematically shows a flow chart of a power control method according to an embodiment of the present disclosure.

如图4所示,该方法包括操作S410~S450。As shown in FIG. 4 , the method includes operations S410 to S450 .

在操作S410,采集当前时刻下电源的供电电压数据。In operation S410, power supply voltage data of a power source at a current moment is collected.

根据本公开的实施例,在芯片启动后,电源控制系统默认处于电量感知模式,在电量感知模式下采集当前时刻下电源的供电电压数据,以监控当前时刻下电源的供电电压、经量化后当前时刻下的电源剩余电量等。According to an embodiment of the present disclosure, after the chip is started, the power control system is in the power sensing mode by default. In the power sensing mode, the power supply voltage data of the power supply at the current moment is collected to monitor the power supply voltage of the power supply at the current moment, the quantified remaining power of the power supply at the current moment, etc.

在操作S420,响应于中断任务被触发,基于中断任务的优先级,确定第一工作电压。In operation S420 , in response to the interrupt task being triggered, a first operating voltage is determined based on a priority of the interrupt task.

根据本公开的实施例,在目标输入/输出接口接收中断任务的情况下,基于目标输入/输出接口的优先级属性,确定中断任务的优先级;基于中断任务的优先级,确定与中断任务对应的第一工作电压。According to an embodiment of the present disclosure, when the target input/output interface receives an interrupt task, the priority of the interrupt task is determined based on the priority attribute of the target input/output interface; based on the priority of the interrupt task, the first operating voltage corresponding to the interrupt task is determined.

在操作S430,在中断任务未被触发或中断任务已完成的情况下,基于供电电压数据确定第二工作电压。In operation S430 , in a case where the interrupt task is not triggered or the interrupt task is completed, a second operating voltage is determined based on the supply voltage data.

根据本公开的实施例,在中断任务未被触发或中断任务已完成的情况下,基于供电电压数据,获取与当前时刻下电源的供电电压对应的第一数字时钟周期;基于预设电压阈值,对当前时刻下电源的供电电压进行调整,得新的当前时刻下电源的供电电压,并获取与新的当前时刻下电源的供电电压对应的第二数字时钟周期。According to an embodiment of the present disclosure, when the interrupt task is not triggered or the interrupt task is completed, based on the power supply voltage data, a first digital clock cycle corresponding to the power supply voltage of the power supply at the current moment is obtained; based on a preset voltage threshold, the power supply voltage of the power supply at the current moment is adjusted to obtain a new power supply voltage of the power supply at the current moment, and a second digital clock cycle corresponding to the new power supply voltage of the power supply at the current moment is obtained.

根据本公开的实施例,对第一数字时钟周期和第二数字时钟周期进行比较,得到比较结果,若比较结果表征第一数字时钟周期小于第二数字时钟周期,将当前时刻下电源的供电电压更新为新的当前时刻下电源的供电电压,并基于预设电压阈值,再次对新的当前时刻下电源的供电电压进行调整,若比较结果表征第一数字时钟周期大于或等于第二数字时钟周期,将当前时刻下电源的供电电压确定为第二工作电压。According to an embodiment of the present disclosure, a first digital clock cycle and a second digital clock cycle are compared to obtain a comparison result. If the comparison result indicates that the first digital clock cycle is less than the second digital clock cycle, the power supply voltage of the power supply at the current moment is updated to a new power supply voltage of the power supply at the current moment, and based on a preset voltage threshold, the new power supply voltage of the power supply at the current moment is adjusted again. If the comparison result indicates that the first digital clock cycle is greater than or equal to the second digital clock cycle, the power supply voltage of the power supply at the current moment is determined as the second operating voltage.

具体地,若第一数字时钟周期小于第二数字时钟周期,则表示在新的当前时刻下电源的供电电压下电路能量消耗时间长,能量消耗的慢,因此可以将新的当前时刻下电源的供电电压作为初始电压,并继续下调电压。反之,若第一数字时钟周期大于或等于第二数字时钟周期,则表示在新的当前时刻下电源的供电电压下电路消耗时间短,代表消耗能量快,因此若再继续下降电压功耗将会增大,所以将初始电压确定为最小能量点对应的最小功耗电压,即确定为第二工作电压。Specifically, if the first digital clock cycle is less than the second digital clock cycle, it means that the circuit consumes energy for a long time and consumes energy slowly under the power supply voltage of the power supply at the new current moment, so the power supply voltage of the power supply at the new current moment can be used as the initial voltage and the voltage can be continuously adjusted downward. On the contrary, if the first digital clock cycle is greater than or equal to the second digital clock cycle, it means that the circuit consumes energy for a short time under the power supply voltage of the power supply at the new current moment, which means that the energy consumption is fast, so if the voltage continues to decrease, the power consumption will increase, so the initial voltage is determined as the minimum power consumption voltage corresponding to the minimum energy point, that is, determined as the second working voltage.

根据本公开的实施例,在上述过程中可以对初始电压进行多轮调整,直至计数结果满足第一数字时钟周期大于或等于第二数字时钟周期的条件。According to an embodiment of the present disclosure, the initial voltage may be adjusted for multiple rounds in the above process until the counting result satisfies the condition that the first digital clock period is greater than or equal to the second digital clock period.

在操作S440,基于供电电压数据、第一工作电压或第二工作电压,生成电压控制信号,利用电压控制信号控制电源的输出电压。In operation S440, a voltage control signal is generated based on the power supply voltage data, the first operating voltage, or the second operating voltage, and an output voltage of the power supply is controlled using the voltage control signal.

根据本公开的实施例,电压控制信号包括第一电压控制信号、第二电压控制信号、第三电压控制信号,利用电压控制信号控制电源的输出电压。According to an embodiment of the present disclosure, the voltage control signal includes a first voltage control signal, a second voltage control signal, and a third voltage control signal, and the voltage control signal is used to control the output voltage of the power supply.

根据本公开的实施例,在电源控制系统启动后,系统默认处于电量感知模式,在电量感知模式下采集当前时刻下电源的供电电压数据。According to an embodiment of the present disclosure, after the power control system is started, the system is in a power sensing mode by default, and the power supply voltage data of the power supply at the current moment is collected in the power sensing mode.

根据本公开的实施例,响应于中断任务被触发,电源控制系统开启性能感知模式,并持续运行电量感知模式,以同时监控当前时刻下系统的剩余电量和输入/输出接口处理中断任务的优先级对应的第一工作电压。According to an embodiment of the present disclosure, in response to an interrupt task being triggered, the power control system turns on the performance awareness mode and continues to run the power awareness mode to simultaneously monitor the remaining power of the system at the current moment and the first operating voltage corresponding to the priority of the input/output interface processing the interrupt task.

根据本公开的实施例,在第一工作电压大于或等于与供电电压数据对应的当前时刻下电源的供电电压的情况下,生成第一电压控制信号,其中,第一电压控制信号用于维持电源的输出电压,使得电源的输出电压与当前时刻下电源的供电电压相等;在第一工作电压小于与供电电压数据对应的当前时刻下电源的供电电压的情况下,生成第二电压控制信号,其中,第二电压控制信号用于向下调节电源的输出电压。According to an embodiment of the present disclosure, when the first operating voltage is greater than or equal to the power supply voltage of the power supply at the current moment corresponding to the power supply voltage data, a first voltage control signal is generated, wherein the first voltage control signal is used to maintain the output voltage of the power supply so that the output voltage of the power supply is equal to the power supply voltage of the power supply at the current moment; when the first operating voltage is less than the power supply voltage of the power supply at the current moment corresponding to the power supply voltage data, a second voltage control signal is generated, wherein the second voltage control signal is used to downwardly regulate the output voltage of the power supply.

根据本公开的实施例,在中断任务未被触发或中断任务已完成的情况下,电源控制系统开启最小能量点追踪模式,并持续运行电量感知模式,以同时监控当前时刻下系统的剩余电量和与最小动态能量点对应的第二工作电压,并基于第二工作电压,生成第三电压控制信号,使得电源的输出电压与第二工作电压相等。According to an embodiment of the present disclosure, when the interrupt task is not triggered or the interrupt task is completed, the power control system starts the minimum energy point tracking mode and continues to run the power sensing mode to simultaneously monitor the remaining power of the system at the current moment and the second operating voltage corresponding to the minimum dynamic energy point, and based on the second operating voltage, generates a third voltage control signal so that the output voltage of the power supply is equal to the second operating voltage.

根据本公开的实施例,当电源控制系统监控到当前时刻下电源的供电电压小于或等于最低基准电压阈值,表示当前时刻下系统剩余电量不足,电源控制系统切换至休眠待机模式,在休眠待机模式下,关断开关电源域电源,保留常开域电路,以处理输入/输出接口产生的中断信号,并启动能量收集器对该电源进行充电。当电源控制系统监控到当前时刻下电源的供电电压大于最低基准电压阈值,恢复开关电源域电源,在等待中断任务的情况下电源控制系统再次切换至最小能量点追踪模式,在中断任务被触发的情况下电源控制系统在此切换至性能感知模式。According to an embodiment of the present disclosure, when the power control system monitors that the power supply voltage of the power supply at the current moment is less than or equal to the minimum reference voltage threshold, it indicates that the remaining power of the system at the current moment is insufficient, and the power control system switches to the sleep standby mode. In the sleep standby mode, the switch power domain power supply is turned off, and the normally open domain circuit is retained to process the interrupt signal generated by the input/output interface, and the energy collector is started to charge the power supply. When the power control system monitors that the power supply voltage of the power supply at the current moment is greater than the minimum reference voltage threshold, the switch power domain power supply is restored, and the power control system switches to the minimum energy point tracking mode again while waiting for the interrupt task. When the interrupt task is triggered, the power control system switches to the performance perception mode.

本公开的实施例通过电量感知模式持续监控当前时刻下电源的供电电压的变化趋势,在有中断任务的情况下,通过性能感知模式根据中断任务优先级确定所需的能量消耗和第一工作电压,使得电源控制系统在处理中断任务时以不同中断任务的优先级控制调整电源输出电压,从而减少动态功耗;此外,在中断任务未被触发或中断任务已完成的情况下,通过最小能量追踪模式确定最小能量点,并将最小能量点对应的工作电压确定为第二工作电压,使得电源控制系统在等待中断任务时以最小工作电压运行,从而减少静态功耗,进而延长了电池使用时间和芯片的使用寿命。The embodiments of the present disclosure continuously monitor the changing trend of the power supply voltage of the power supply at the current moment through the power sensing mode. When there is an interrupt task, the required energy consumption and the first working voltage are determined according to the interrupt task priority through the performance sensing mode, so that the power control system adjusts the power output voltage according to the priority control of different interrupt tasks when processing the interrupt task, thereby reducing dynamic power consumption; in addition, when the interrupt task is not triggered or the interrupt task is completed, the minimum energy point is determined through the minimum energy tracking mode, and the working voltage corresponding to the minimum energy point is determined as the second working voltage, so that the power control system runs at the minimum working voltage when waiting for the interrupt task, thereby reducing static power consumption, thereby extending the battery life and the service life of the chip.

下面参考图5,结合具体实施例对电源控制方法做进一步说明5, the power control method is further described in combination with a specific embodiment.

图5示意性示出了根据本公开具体实施例的电源控制方法的电压变化示意图。FIG5 schematically shows a voltage variation diagram of a power supply control method according to a specific embodiment of the present disclosure.

如图5所示,该电源控制方法的电压变化示意图包括中断任务的触发示意图以及输入电压变化、电源输出电压变化、功耗变化示意图。在芯片启动后,该电源控制系统默认处于电量感知模式,由于芯片内有大量寄存器配置,因此,在电量感知模式下,电源控制系统以采集到的当前时刻下电源的供电电压作为电源输出电压运行。As shown in Figure 5, the voltage change diagram of the power control method includes a trigger diagram of the interrupt task and a diagram of input voltage change, power output voltage change, and power consumption change. After the chip is started, the power control system is in power sensing mode by default. Since there are a large number of register configurations in the chip, in the power sensing mode, the power control system uses the power supply voltage collected at the current moment as the power output voltage.

在电源输出电压稳定之后的T1时刻,响应于第一中断任务被触发,在T1至T2时段,电量感知模式持续监控当前时刻下电源的供电电压及剩余电量的情况下,电源控制系统开启性能感知模式。通过性能感知模式确定第一中断任务为高优先级中断任务,所需较高电压处理,因此,基于电量感知模式反馈的当前时刻下电源的供电电压,将电源输出电压维持当前时刻下电源的供电电压以处理该高优先级中断任务。At time T1 after the power output voltage is stable, in response to the triggering of the first interrupt task, during the period from T1 to T2 , the power sensing mode continuously monitors the power supply voltage and the remaining power of the power supply at the current moment, and the power control system turns on the performance sensing mode. The first interrupt task is determined to be a high-priority interrupt task through the performance sensing mode, and a higher voltage is required for processing. Therefore, based on the power supply voltage of the power supply at the current moment fed back by the power sensing mode, the power output voltage is maintained at the power supply voltage of the power supply at the current moment to process the high-priority interrupt task.

在第一中断任务处理完成之后的T2时刻,响应于第二中断任务被触发,在T2至T3时段,电量感知模式和性能感知模式持续协同工作。通过性能感知模式确定第二中断任务为低优先级中断任务,所需较低电压即可处理,因此,基于电量感知模式反馈的当前时刻下电源的供电电压,将电源输出电压向下调整至较低电压以处理该低优先级中断任务。At time T2 after the first interrupt task is processed, in response to the second interrupt task being triggered, the power sensing mode and the performance sensing mode continue to work together during the period from T2 to T3 . The second interrupt task is determined to be a low-priority interrupt task through the performance sensing mode, and a lower voltage is required to process it. Therefore, based on the power supply voltage of the power supply at the current moment fed back by the power sensing mode, the power supply output voltage is adjusted downward to a lower voltage to process the low-priority interrupt task.

在第一中断任务处理完成、等待下一中断任务的T3时刻,在电量感知模式持续监控当前时刻下电源的供电电压及剩余电量的情况下,电源控制系统将性能感知模式切换至最小能量点输出模式。在T3至T4时段,通过最小能量点输出模式基于当前时刻下电源的供电电压确定最低功耗电压,并将最低功耗电压确定为电源输出电压,使得电源控制系统在等待中断任务的情况下以最低功耗电压持续运行。At time T3 when the first interrupt task is completed and the next interrupt task is waiting, the power control system switches the performance perception mode to the minimum energy point output mode while the power perception mode continues to monitor the power supply voltage and remaining power of the power supply at the current moment. During the period from T3 to T4 , the minimum power consumption voltage is determined based on the power supply voltage of the power supply at the current moment through the minimum energy point output mode, and the minimum power consumption voltage is determined as the power output voltage, so that the power control system continues to operate at the minimum power consumption voltage while waiting for the interrupt task.

在最小能量点输出模式的T4时刻,响应于第三中断任务被触发,在电量感知模式持续监控当前时刻下电源的供电电压及剩余电量的情况下,电源控制系统将最小能量点输出模式再次切换为性能感知模式。在T4至T5时段,通过性能感知模式确定第三中断任务为高优先级中断任务,所需较高电压处理。因此,基于电量感知模式反馈的当前时刻下电源的供电电压,将电源输出电压向上调整至当前时刻下电源的供电电压,以处理该高优先级中断任务。其中,当前时刻下电源的供电电压随着剩余电量的下降而降低。At time T4 of the minimum energy point output mode, in response to the third interrupt task being triggered, the power control system switches the minimum energy point output mode to the performance perception mode again while the power perception mode continues to monitor the power supply voltage and the remaining power of the power supply at the current moment. During the period from T4 to T5 , the third interrupt task is determined to be a high priority interrupt task through the performance perception mode, which requires higher voltage processing. Therefore, based on the power supply voltage of the power supply at the current moment fed back by the power perception mode, the power supply output voltage is adjusted upward to the power supply voltage of the power supply at the current moment to process the high priority interrupt task. Among them, the power supply voltage of the power supply at the current moment decreases as the remaining power decreases.

在第三中断任务处理完成、等待下一中断任务的T5时刻,在电量感知模式持续监控当前时刻下电源的供电电压及剩余电量的情况下,电源控制系统再次将性能感知模式切换至最小能量点输出模式。在T5至T6时段,通过最小能量点输出模式再次确定在当前时刻下电源的供电电压下的最低功耗电压,并将该最低功耗电压确定为电源输出电压,使得电源控制系统在等待中断任务的情况下以该最低功耗电压持续运行。At time T5 when the third interrupt task is completed and the next interrupt task is waiting, the power control system switches the performance perception mode to the minimum energy point output mode again when the power perception mode continues to monitor the power supply voltage and the remaining power of the power supply at the current moment. During the period from T5 to T6 , the minimum energy point output mode is used to determine the minimum power consumption voltage under the power supply voltage of the power supply at the current moment, and the minimum power consumption voltage is determined as the power output voltage, so that the power control system continues to operate at the minimum power consumption voltage while waiting for the interrupt task.

在电量感知模式监控到当前时刻下电源的供电电压不满足基准电压阈值的T6时刻,基于电量感知模式监控到当前剩余电量不足,电源控制系统将最小能量点输出模式切换成休眠待机模式。在T6至T7时段,通过休眠待机模式,可以先存储处理各个模块数据,门控开关电源域时钟,对开关电源域的输出接口进行隔离,设置为1或0;再使能存储寄存器数据,关断部分开关电源域电源,保留常开的开关电源域电源,并利用能量收集器对电源进行充电,其中,开关电源域包含模块越多,功耗节约越明显。At time T6 when the power sensing mode monitors that the power supply voltage at the current moment does not meet the reference voltage threshold, the power control system switches the minimum energy point output mode to the sleep standby mode based on the power sensing mode monitoring that the current remaining power is insufficient. During the period from T6 to T7 , through the sleep standby mode, the data of each module can be stored and processed first, the switch power domain clock can be gated, the output interface of the switch power domain can be isolated and set to 1 or 0; then the storage register data can be enabled, part of the switch power domain power supply is turned off, the normally open switch power domain power supply is retained, and the power supply is charged using the energy collector. Among them, the more modules the switch power domain contains, the more obvious the power consumption saving is.

在电量感知模式监控到当前时刻下电源的供电电压大于最低基准电压阈值的T7时刻,恢复开关电源域电源,恢复寄存器数据,失能隔离,恢复时钟,系统恢复正常运行,模式控制模块根据电量感知模块发送的供电电压数据和中断任务切换模式。When the power sensing mode monitors that the power supply voltage at the current moment is greater than the minimum reference voltage threshold at time T7 , the power of the switching power domain is restored, the register data is restored, the isolation is disabled, the clock is restored, and the system resumes normal operation. The mode control module switches the mode according to the power supply voltage data and interrupt task sent by the power sensing module.

具体地,如果在等待中断任务的情况下,电源控制系统将休眠待机模式切换至最小能量点追踪模式;如果在中断任务被触发的情况下电源控制系统将休眠待机模式切换至性能感知模式。其中,性能感知模式和最小能量点追踪模式可以基于中断任务是否触发进行循环切换。Specifically, if the system is waiting for an interrupt task, the power control system switches the sleep standby mode to the minimum energy point tracking mode; if the interrupt task is triggered, the power control system switches the sleep standby mode to the performance-aware mode. The performance-aware mode and the minimum energy point tracking mode can be switched cyclically based on whether the interrupt task is triggered.

本领域技术人员可以理解,本公开的各个实施例和/或权利要求中记载的特征可以进行多种组合和/或结合,即使这样的组合或结合没有明确记载于本公开中。特别地,在不脱离本公开精神和教导的情况下,本公开的各个实施例和/或权利要求中记载的特征可以进行多种组合和/或结合。所有这些组合和/或结合均落入本公开的范围。It will be appreciated by those skilled in the art that the features described in the various embodiments and/or claims of the present disclosure may be combined and/or combined in a variety of ways, even if such combinations and/or combinations are not explicitly described in the present disclosure. In particular, the features described in the various embodiments and/or claims of the present disclosure may be combined and/or combined in a variety of ways without departing from the spirit and teachings of the present disclosure. All of these combinations and/or combinations fall within the scope of the present disclosure.

以上对本公开的实施例进行了描述。但是,这些实施例仅仅是为了说明的目的,而并非为了限制本公开的范围。尽管在以上分别描述了各实施例,但是这并不意味着各个实施例中的措施不能有利地结合使用。本公开的范围由所附权利要求及其等同物限定。不脱离本公开的范围,本领域技术人员可以做出多种替代和修改,这些替代和修改都应落在本公开的范围之内。The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. The scope of the present disclosure is defined by the attached claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims (10)

1. A power control system, comprising:
an electric quantity sensing module, a performance sensing module, a minimum energy point tracking module and a mode control module,
The electric quantity sensing module is configured to collect power supply voltage data of a power supply at the current moment and send the power supply voltage data to the minimum energy point tracking module and the mode control module respectively;
The performance sensing module is configured to respond to the triggering of an interrupt task, determine a first working voltage based on the priority of the interrupt task, and send the first working voltage to the mode control module;
The minimum energy point tracking module is configured to determine a second working voltage based on the power supply voltage data and send the second working voltage to the mode control module when the interrupt task is not triggered or the interrupt task is completed;
The mode control module is configured to generate a voltage control signal based on the supply voltage data, the first operating voltage, or the second operating voltage, and control an output voltage of the power supply using the voltage control signal.
2. The power control system of claim 1, wherein the minimum energy point tracking module comprises a counting unit, a minimum energy point tracking unit,
The timing unit is configured to acquire a first digital clock period corresponding to the power supply voltage of the power supply at the current moment based on the power supply voltage data under the condition that the interrupt task is not triggered or the interrupt task is completed, adjust the power supply voltage of the power supply at the current moment based on a preset voltage threshold value to acquire a new power supply voltage of the power supply at the current moment, and acquire a second digital clock period corresponding to the new power supply voltage of the power supply at the current moment;
The minimum energy point tracking unit is configured to compare the first digital clock period and the second digital clock period output by the timing unit, to obtain a comparison result,
If the comparison result indicates that the first digital clock period is smaller than the second digital clock period, updating the power supply voltage of the power supply at the current moment to the new power supply voltage of the power supply at the current moment, and adjusting the power supply voltage of the power supply at the new current moment again based on the preset voltage threshold;
And if the comparison result indicates that the first digital clock period is greater than or equal to the second digital clock period, determining the power supply voltage of the power supply at the current moment as the second working voltage, and sending the second working voltage to the mode control module.
3. The power control system of claim 1, wherein the performance awareness module comprises a plurality of input/output interfaces configured to receive the interrupt task;
Wherein the performance awareness module is configured to determine, based on a priority attribute of a target input/output interface, a priority of the interrupt task, determine, based on the priority of the interrupt task, a first operating voltage corresponding to the interrupt task, and send the first operating voltage to the mode control module, where the target input/output interface belongs to the plurality of input/output interfaces, if the target input/output interface receives the interrupt task.
4. The power control system of claim 1, wherein the voltage control signal comprises a first voltage control signal, a second voltage control signal;
in case the interrupt task is triggered, the mode selection unit is configured to:
Generating the first voltage control signal when the first working voltage is greater than or equal to the power supply voltage of the power supply at the current moment corresponding to the power supply voltage data, wherein the first voltage control signal is used for maintaining the output voltage of the power supply so that the output voltage of the power supply is equal to the power supply voltage of the power supply at the current moment;
And generating the second voltage control signal under the condition that the first working voltage is smaller than the power supply voltage of the power supply at the current moment corresponding to the power supply voltage data, wherein the second voltage control signal is used for downwards regulating the output voltage of the power supply.
5. The power control system of claim 1, wherein the voltage control signal further comprises a third control signal;
In case the interrupt task is not triggered or the interrupt task has been completed, the mode selection unit is configured to: and generating the third voltage control signal based on the second working voltage so that the output voltage of the power supply is equal to the second working voltage.
6. The power control system of claim 1, wherein the power control system further comprises a sleep standby module configured to turn off a switching power domain power supply, charge the power supply with an energy harvester, and resume the switching power domain power supply, upon detecting that the supply voltage of the power supply at the current time does not meet a reference voltage threshold.
7. A power supply control method, comprising:
collecting power supply voltage data of a power supply at the current moment;
responsive to an interrupt task being triggered, determining a first operating voltage based on a priority of the interrupt task;
Determining a second operating voltage based on the supply voltage data if the interrupt task is not triggered or the interrupt task has been completed;
and generating a voltage control signal based on the power supply voltage data, the first working voltage or the second working voltage, and controlling the output voltage of the power supply by using the voltage control signal.
8. The power control method according to claim 7, wherein the determining a second operating voltage based on the supply voltage data in a case where the interrupt task is not triggered or the interrupt task has been completed comprises:
acquiring a first digital clock period corresponding to the power supply voltage of the power supply at the current moment based on the power supply voltage data under the condition that the interrupt task is not triggered or the interrupt task is completed;
based on a preset voltage threshold, adjusting the power supply voltage of the power supply at the current moment to obtain the power supply voltage of the power supply at the new current moment, and obtaining a second digital clock period corresponding to the power supply voltage of the power supply at the new current moment;
comparing the first digital clock period with the second digital clock period to obtain a comparison result,
If the comparison result indicates that the first digital clock period is smaller than the second digital clock period, the power supply voltage of the power supply at the current moment is updated to the new power supply voltage of the power supply at the current moment, the power supply voltage of the power supply at the new current moment is adjusted again based on the preset voltage threshold value,
And if the comparison result indicates that the first digital clock period is greater than or equal to the second digital clock period, determining the power supply voltage of the power supply at the current moment as the second working voltage.
9. The power control method of claim 7, wherein said determining a first operating voltage based on a priority of an interrupt task and said supply voltage data in response to the interrupt task being triggered comprises:
determining the priority of the interrupt task based on the priority attribute of the target input/output interface under the condition that the target input/output interface receives the interrupt task;
and determining a first working voltage corresponding to the interrupt task based on the priority of the interrupt task and the power supply voltage data.
10. The power supply control method according to claim 7, wherein the generating a voltage control signal based on the supply voltage data, the first operation voltage, or the second operation voltage, and controlling the output voltage of the power supply using the voltage control signal comprises:
The voltage control signals comprise a first voltage control signal, a second voltage control signal and a third voltage control signal;
in the event that the interrupt task is triggered,
Generating the first voltage control signal when the first working voltage is greater than or equal to the power supply voltage of the power supply at the current moment corresponding to the power supply voltage data, wherein the first voltage control signal is used for maintaining the output voltage of the power supply so that the output voltage of the power supply is equal to the power supply voltage of the power supply at the current moment;
Generating the second voltage control signal under the condition that the first working voltage is smaller than the power supply voltage of the power supply at the current moment corresponding to the power supply voltage data, wherein the second voltage control signal is used for downwards regulating the output voltage of the power supply;
Generating the third voltage control signal based on the second operating voltage such that the output voltage of the power supply is equal to the second operating voltage, if the interrupt task is not triggered or the interrupt task has been completed;
and controlling the output voltage of the power supply by using the voltage control signal.
CN202410206717.5A 2024-02-26 2024-02-26 Power supply control system and method Pending CN118137824A (en)

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