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Power management

A power management and circuit technology, applied in the direction of emergency power arrangement, current collectors, electric vehicles, etc., can solve problems such as power consumption

Pending Publication Date: 2020-12-18
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Accordingly, some electrical devices may have the ability to switch between a fully on or awake mode or operation and a sleep or resting mode of operation in which only some parts of the electrical device may need to consume power

Method used

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Embodiment Construction

[0034] refer to figure 1, shows a schematic block diagram of the electronic device 100 . Electronic devices may take many forms. For example, the electronic device may be an NFC device with a standby mode of operation. In particular, device 100 may be a secure NFC device that is in a low power mode most of the time and enters a high power mode only during NFC transactions such as payment or ticketing. In other embodiments, the electronic device may be a battery powered electronic device. Other embodiments of the device may provide mobile electronic devices. Another embodiment of an electronic device may be a watch, and in particular a smart watch or the like.

[0035] Such as figure 1 As shown, electronic device 100 has a power source or power source 102 . Power source 102 may take the form of one or more batteries. The electronic device 100 may include primary electronic circuitry 104 that provides most of the operating functions of the electronic device 100 . Such as...

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Abstract

Power management circuits and methods of operation are described. A power management circuit includes an electrical power input for receiving electrical power from a power source, a controller, a finite state machine circuit in communication with the controller and a first voltage regulator in communication with the controller and the electrical power input and having a first output connected to afirst capacitor for storing electrical power and to first electrical circuitry. The controller is configured to cyclically enable the first voltage regulator to supply current to charge the first capacitor. The finite state machine circuit is configured to interact with the controller to control the duration of a first time period of a cycle over which the first voltage regulator supplies currentto charge the first capacitor and to control the duration of a second time period of the cycle over which the first voltage regulator does not supply current to charge the first capacitor and duringwhich electrical current is receivable by said first electrical circuitry from said first capacitor.

Description

technical field [0001] The present specification relates to power management and in particular to power management circuitry and methods of operation that may provide low power modes of operation for electronic equipment, apparatus and equipment. Background technique [0002] Electronic devices require a source of electrical power in order to operate. Mains power sources typically provide an unlimited supply of electricity. However, electronic devices that cannot readily use a mains power source, such as portable or mobile electronic devices, may alternatively or additionally have their own local power source, such as one or more batteries. [0003] However, such local power sources may generally only provide a limited amount of power, and thus may limit the time that the electrical device can operate. This situation may be exacerbated where the electrical device requires a relatively large amount of power eg to drive an antenna or an amplifier, and / or where the electrical...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/34
CPCH02J7/345H02J7/0068H02J7/0013H02J2207/50H02J9/005G05B19/045H02J7/00712
Inventor 克里斯蒂安·文森特·索雷斯尼古拉斯·帕特里克·万塔隆法宾·布瓦塔尔
Owner NXP BV