Power management method, corresponding system and apparatus
A technology for processing systems and power, applied in power management, output power conversion devices, transmission systems, etc., can solve the problems of reduced power consumption, reduced silicon area, increased software complexity, etc., to achieve reduced power consumption, reduced silicon area, etc. Reduced effect
Active Publication Date: 2020-09-04
STMICROELECTRONICS SRL
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Problems solved by technology
[0006] In processing units for general-purpose applications such as microcontrollers or system-on-chips (e.g., as STM32 microcontrollers), which have low-power operation and reduced package pin count, may encounter the problem of reduced power consumption, power Reduction in consumption is often a strong requirement for IoT applications and may also encounter questions about the necessity of silicon area reduction
[0007] Independent power management of the microcontroller and RF unit can result in a less power efficient system, which increases cost in terms of area, bill of materials (BOM) and others, and also increases software complexity
[0008] Systems where the power management of the microcontroller and the RF unit are not independent may result in less power reduction and greater software complexity
Method used
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[0031] In the ensuing description, one or more specific details are set forth in order to provide a thorough understanding of example embodiments of the present description. Embodiments may be presented without one or more of the specific details, or with other methods, components, materials, etc. In other instances, known structures, materials, or operations are not detailed or described so that certain aspects of the embodiments would not be obscured.
[0032] References to "an embodiment" or "one embodiment" within the framework of the present description are intended to indicate that a particular configuration, structure or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, phrases such as "in an embodiment" or "in one embodiment" may appear in one or more places in the description and do not necessarily refer to the same embodiment. Furthermore, particular configurations, structures or characteristics may be combined ...
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The embodiments of the disclosure relate to a power management method, and a corresponding system and apparatus. A method for power management in an electronic circuit that comprises a processing system and an RF embedded circuit includes: generating a first regulated voltage with a power regulation module of the RF embedded circuit; generating a second regulated voltage from the first regulated voltage with a first linear regulator of the processing system; and controlling the power regulation module of the RF embedded circuit to operate according to a plurality of operation modes. The operation modes include: a first sleep mode in which a switched-mode power supply of the RF embedded circuit is off and a second linear regulator of the RF embedded circuit is off; a second sleep mode in which a switched-mode power supply is off and the second linear regulator is on; and a third sleep mode in which the switched-mode power supply is on and the second linear regulator is off.
Description
[0001] Cross References to Related Applications [0002] This application claims priority to Italian Patent Application No. 102019000002963 filed on February 28, 2019, which is incorporated herein by reference. technical field [0003] Embodiments of the present disclosure relate generally to electronic systems and methods, and in particular embodiments, to power management methods, corresponding systems and devices. Background technique [0004] Various emerging application scenarios, such as the Internet of Things (IoT) or the automotive field, have fueled increased interest in microcontroller-based applications with radio frequency (RF) capabilities. [0005] Therefore, some level of integration between the microcontroller and the RF circuitry, particularly with the third-party circuit core(s) used for RF transceivers, is also desirable for general-purpose products such as consumer products ( Examples are household appliances such as televisions, refrigerators, washing ...
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IPC IPC(8): H04W52/02H04W52/52H04B1/401H04B1/04H04B1/18
CPCH04W52/0209H04W52/52H04B1/401H04B1/04H04B1/18H04B2001/0416G06F1/32G06F1/3243G06F1/3287Y02D10/00Y02D30/50H04B1/40H02M1/0045
Inventor D·曼加诺P·布塔
Owner STMICROELECTRONICS SRL