WO2016192673A1 - Circuit d'alimentation électrique et dispositif électronique - Google Patents

Circuit d'alimentation électrique et dispositif électronique Download PDF

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Publication number
WO2016192673A1
WO2016192673A1 PCT/CN2016/084742 CN2016084742W WO2016192673A1 WO 2016192673 A1 WO2016192673 A1 WO 2016192673A1 CN 2016084742 W CN2016084742 W CN 2016084742W WO 2016192673 A1 WO2016192673 A1 WO 2016192673A1
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Prior art keywords
power supply
processor
circuit
power
signal
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PCT/CN2016/084742
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English (en)
Chinese (zh)
Inventor
苏上丁
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广东欧珀移动通信有限公司
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Publication of WO2016192673A1 publication Critical patent/WO2016192673A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Definitions

  • the present invention relates to the field of electronic circuits, and in particular, to a power supply circuit and an electronic device.
  • Headphone power amplifiers usually use a Micro Controller Unit (MCU) chip to detect external operations in standby mode (such as plugging in a charger, power display request, booting music, etc.) Wait). When the MCU detects these external operations, it performs or coordinates the completed task. However, when the headphone power amplifier is in the standby state, the power supply still supplies power to the MCU, thereby continuously consuming power, so continuous power supply in the standby state causes unnecessary power consumption.
  • MCU Micro Controller Unit
  • the embodiment of the invention provides a power supply circuit and an electronic device.
  • the electronic device does not receive the operation signal input by the user within a preset time and the power amplifier in the electronic device does not work, the processor of the electronic device does not supply power. , reducing the power consumption of electronic devices.
  • a first aspect of the embodiments of the present invention provides a power supply circuit, which is applied to an electronic device for powering a power amplifier in the electronic device, where the power supply circuit includes a power source, an acquisition circuit, and a processor, where the power source is used for
  • the acquiring circuit is configured to obtain an operation signal input by the user, and output the obtained operation signal to the processor
  • the processor is configured to detect that the electronic device is preset Whether the operation signal input by the user is received within the time or whether the power amplifier in the electronic device is working within a preset time, when the processor does not receive the operation signal input by the user within the preset time and the When the power amplifier in the electronic device is not operating, a first control signal is sent to the power source, and the first control signal is used to control a power supply path that disconnects the power source to the processor.
  • the acquiring circuit is further configured to acquire an operation signal input by a user after the power supply is disconnected from the power supply path of the processor, and obtain an operation signal according to the operation signal. And controlling the signal to output the second control signal to the power source to enable the power source to start powering the processor, the processor further configured to perform the operation after receiving power of the power source The operation corresponding to the signal.
  • the power supply circuit further includes a voltage dividing circuit, the input end of the voltage dividing circuit is electrically connected to the obtaining circuit, and the output end is electrically connected to the power source and the processor, respectively, for outputting the operation signal according to the acquiring circuit Obtaining the second control signal and the third control signal, and outputting the second control signal to the power source, so that the power source starts to supply power to the processor, and outputs the third control signal to the Determining, by the processor, the processor to perform an operation corresponding to the third control signal after receiving the power of the power source.
  • the power supply circuit further includes a conversion circuit, the conversion circuit is electrically connected to the power supply at one end, and the other end is electrically
  • the processor is coupled to convert electrical energy output by the power source to electrical energy required by the processor.
  • the conversion circuit includes a DC voltage to DC voltage circuit, a low dropout linear regulator circuit, and an electronic switch circuit. At least one or several combinations.
  • the conversion circuit further includes an enable end, the enable end of the conversion circuit is configured to receive the And the electric energy output by the power source is used as an enable signal of the conversion circuit, and the electric energy output by the power source is converted into electric energy required by the processor under the control of the enable signal.
  • the power supply circuit further includes a signal processing circuit, where the signal processing circuit is used for an operation signal input by a user At least one of changing the level, or changing the phase, or delay processing, or extracting the edge of the transition, or extracting the pulse processing, and using the processed operation signal as the second control signal.
  • the operation signal that is acquired by the acquiring circuit after the power supply path of the processor is disconnected includes: One or a combination of a knob start signal, a switch press signal, and an external power signal.
  • the operation signal that is acquired by the acquiring circuit after the power supply path of the processor is disconnected includes: At least one or a combination of an externally generated level signal, an externally generated level transition edge signal, and an externally generated pulse signal.
  • the second aspect of the embodiments of the present invention discloses an electronic device, where the electronic device includes a power amplifier, and the electronic device further includes a power supply circuit in any implementation manner described above, and the power supply circuit is configured to supply power to the power amplifier.
  • a third aspect of the embodiments of the present invention provides a power supply circuit, including: a power supply; an acquisition circuit, configured to acquire an operation signal input by a user; and a processor, configured to detect whether the acquisition circuit receives the user within a preset time Input operation signal or whether the power amplifier in the electronic device operates within a preset time, and when the acquisition circuit is at the preset When the operation signal input by the user is not received within the time and the power amplifier in the electronic device is not working, the power supply path of the power supply to the processor is turned off.
  • the acquiring circuit when the acquiring circuit receives an operation signal input by the user or the electronic device in the preset time When the power amplifier in the device is in operation, the power supply is maintained to be connected to the power supply path of the processor.
  • the controller issues a first control signal to the power source, and the first control signal is used to control a power supply path that disconnects the power source to the processor.
  • the acquiring circuit is further configured to: if the power supply path to the processor is disconnected from the power source After receiving the operation signal input by the user, the second control signal is output to the power source to enable the power source to start powering the processor.
  • the method further includes: a voltage dividing circuit, wherein an input end of the voltage dividing circuit is electrically connected to the acquiring circuit, An output end of the voltage dividing circuit is electrically connected to the power source and the processor, and is configured to obtain the second control signal and the third control signal according to the operation signal output by the acquiring circuit, and Transmitting a second control signal to the power source to cause the power source to start powering the processor, outputting the third control signal to the processor, to cause the processor to perform the third control The operation corresponding to the signal.
  • the method further includes: a conversion circuit, the one end of the conversion circuit is electrically connected to the power source, and the other end is electrically connected
  • the processor is coupled to convert electrical energy output by the power source to electrical energy required by the processor.
  • the conversion circuit includes a DC voltage to DC voltage circuit, a low dropout linear regulator circuit, and an electronic switch circuit. At least one or several combinations.
  • the conversion circuit further includes: an enable end, configured to receive the power output of the power supply, and The electric energy output by the power source is used as an enable signal of the conversion circuit, and the electric energy output by the power source is converted into electric energy required by the processor under the control of the enable signal.
  • the method further includes: a signal processing circuit, configured to change at least an operation signal input by the user Level, or change phase, or delay processing, or extracting a transition edge, or extracting one of the pulse processing, and processing the processed signal Is the second control signal.
  • a signal processing circuit configured to change at least an operation signal input by the user Level, or change phase, or delay processing, or extracting a transition edge, or extracting one of the pulse processing, and processing the processed signal Is the second control signal.
  • the operation signal includes one or more of a knob start signal, a switch press signal, and an external power signal Combination.
  • a fourth aspect of an embodiment of the present invention discloses an electronic device including a power amplifier, the electronic device further comprising a power supply circuit as described above, the power supply circuit for supplying power to the power amplifier.
  • the electronic device is an earphone.
  • the power supply circuit monitors and executes when the electronic device does not receive the operation signal input by the user within a preset time and the power amplifier in the electronic device does not work.
  • the processor operating outside the electronic device stops supplying power, and after the electronic device receives the external signal, the external signal is used as a power enable signal on one hand to control the power module of the processor to be turned on, and on the other hand, to the processor for processing.
  • the device responds in time and performs corresponding external operations after being powered, thereby reducing the power consumed by the electronic device.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a power supply circuit according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a second embodiment of a power supply circuit according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a third embodiment of a power supply circuit according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a fourth embodiment of a power supply circuit according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a specific circuit of a fifth embodiment of a power supply circuit according to an embodiment of the present invention.
  • the power supply circuit of the embodiment of the present invention uses the power supply, the acquisition circuit, and the processor to control the power supply to the processor when the processor detects that the external operation signal is not received for a period of time and the power amplifier in the electronic device is not working. Power off, reducing the unnecessary power consumption of electronic equipment, saving energy.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a power supply circuit according to an embodiment of the present invention.
  • the power supply circuit 1 described in this embodiment is applied to an electronic device (not shown) for powering a power amplifier in the electronic device.
  • the electronic device may be For headphones.
  • the power supply circuit 1 includes a power source 11, an acquisition circuit 13, and a processor 15.
  • the power supply 11 is configured to supply power to the processor 15.
  • the acquisition circuit 13 is configured to acquire an operation signal input by a user, and output the acquired operation signal to the processor 15, where the processor 15 And configured to detect whether the electronic device receives an operation signal input by the user within a preset time or whether the power amplifier in the electronic device operates within a preset time.
  • the processor 15 When the processor 15 does not receive an operation signal input by the user within the preset time and the power amplifier in the electronic device is not working, sends a first control signal to the power source 11, the first control The signal is used to disconnect the power supply path of the power source 11 to the processor 15.
  • the power source 11 may be an external power source or a battery.
  • the power source 11 supplies power to the processor 15.
  • the manner in which the power source 11 supplies power to the processor 15 may be direct power supply, or may be powered after being processed through an intermediate link.
  • the power source 11 turns off the power supply path of the processor 15 to Powering to the processor 15 is stopped.
  • the acquiring circuit 13 outputs the acquired operation signal.
  • the processor 15 performs an operation corresponding to the operation signal input by the acquisition circuit 13.
  • the acquisition circuit 13 outputs the acquired operation signal to the office on the one hand.
  • the power supply 11, the operation signal is used as an enable signal of the power source 11, the power supply 11 is turned on to supply power to the processor 15, and the acquisition circuit 13 outputs the acquired operation signal to the
  • the processor 15 is configured to cause the processor 15 to perform an operation corresponding to the operation signal after power is supplied.
  • the processor 15 may be connected to the electronic device housing through a shell interface, if the electronic device housing is not received within the preset time.
  • the operation signal input by the user and the power amplifier in the electronic device is not working the processor 15 sends the first control signal to the power source 11, and the power supply 11 is turned off to supply power to the processor 15.
  • the path is to disconnect the power supply to the processor 15.
  • the power supply circuit provided by the present invention detects the working state of the electronic device, and detects that the electronic device does not receive the operation signal input by the user within the preset time and the power amplifier in the electronic device does not work, and timely cuts off the power supply pair.
  • the power supply of the processor reduces the power consumption of the electronic device and effectively saves energy.
  • FIG. 2 is a schematic structural diagram of a second embodiment of a power supply circuit provided by the present invention.
  • the power supply circuit 1 described in this embodiment is applied to an electronic device (not shown) for powering a power amplifier in the electronic device.
  • the electronic device may be an earphone.
  • 2 is a further description of the power supply circuit of FIG. 1.
  • the power supply circuit 1 includes a power source 11, an acquisition circuit 13, and a processor 15.
  • the power source 11 and the processor 15 can refer to the circuit structure shown in FIG. 1.
  • the acquisition circuit 13 acquires an operation signal input by the user after the power supply 11 turns off the power supply path of the processor 15, obtains a second control signal according to the operation signal, and outputs the second control signal to
  • the power source 11 is configured to enable the power source 11 to be powered by the processor 15.
  • the processor 15 is further configured to perform an operation corresponding to the operation signal after receiving the power of the power source 11.
  • the housing interface of the acquisition circuit 13 in the power supply circuit 1 provided by the present invention may be connected to the electronic device housing, so that the acquisition circuit 13 detects and acquires the operation of the user input through the electronic device housing at any time. signal.
  • the operation signal input by the user acquired by the acquisition circuit 13 after the power supply path of the processor 15 is disconnected may include, but is not limited to, a knob activation signal, a switch pressing signal, and an external power supply signal.
  • the operation event corresponding to the operation signal may include, but is not limited to, turning on the machine to prepare to play a music event by using a knob, a button, a switch, etc., the charger power supply enters or connects with other external power events, and requests the display of the battery power by means of a tact switch. Or status events and requests to change power supply relationships or status events with other devices through switches or the like.
  • the operation signals acquired by the acquisition circuit 13 may include, but are not limited to, an externally generated level signal, an externally generated level transition edge signal, and an externally generated pulse signal.
  • the processor 15 may include, but is not limited to, a Micro Controller Unit (MCU).
  • MCU Micro Controller Unit
  • the power supply circuit provided by the invention detects that the electronic device does not receive the operation signal input by the user within the preset time and the power amplifier in the electronic device does not work, and timely cuts off the power supply to the processor by the power source, and reduces the electronic device.
  • the power consumption effectively saves power, and when the power supply is not supplying power to the processor, the acquisition circuit acquires an external operation signal as an enable signal of the power source when the external operation signal is obtained, and starts the power supply.
  • the power is supplied to the processor, and on the other hand, the acquisition circuit acquires the external operation signal as the operation signal of the processor.
  • the acquisition circuit uses an external operation signal to start the power supply to supply power to the processor, and the processor can normally perform an operation signal after being powered.
  • FIG. 3 is a schematic structural diagram of a third embodiment of a power supply circuit provided by the present invention.
  • the power supply circuit 1 described in this embodiment is applied to an electronic device (not shown) for powering a power amplifier in the electronic device.
  • the electronic device may be an earphone.
  • FIG. 3 is a further description of the power supply circuit of FIG. 1.
  • the power supply circuit 1 includes a power supply 11, an acquisition circuit 13, a processor 15, and a signal processing circuit 17. Among them, electricity
  • the source 11, the acquisition circuit 13, and the processor 15 can refer to the circuit configuration shown in FIG. 1 or 2.
  • the signal processing circuit 17 performs at least one level change, or phase change, or delay processing, or extraction of a transition edge, or extraction pulse processing on the operation signal input by the user, and uses the processed operation signal as the Two control signals.
  • the signal processing circuit 17 is connected to the acquisition circuit 13 at one end, the output end is connected to the power source 11 at one end, and the processor 15 is connected to the other end, and the operation signal output by the acquisition circuit 13 is changed.
  • Leveling, or changing the phase, or delay processing, or extracting a transition edge, or extracting one of the pulse processing, and outputting the processed operation signal as a second operation signal to the power source 11 to cause the power source 11 Initiating power supply to the processor 15 to output an operation signal to the processor 15 to enable the processor 15 to perform an operation signal acquired by the acquisition circuit 13 after receiving the power of the power source 11 operating.
  • the power supply circuit provided by the invention detects that the electronic device does not receive the operation signal input by the user within a preset time and the power amplifier in the electronic device does not work, cuts off the power supply of the power supply to the processor, and reduces the work of the electronic device. Consumption, effectively saving power, and when the power supply is not supplying power to the processor, the acquisition circuit inputs the acquired external operation signal to the signal processing circuit to change the level of the operation signal, change the phase, etc., and the processing will be performed.
  • the operation signal after processing is used as an enable signal of the power source, the power source is turned on to supply power to the processor, and on the other hand, as the operation signal of the processor, when the processor obtains power of the power source, the operation corresponding to the external operation signal is performed. Therefore, when the power supply is not powered by the processor, the acquisition circuit uses the external operation signal to start the power supply to supply power to the processor, and the processor can normally perform the operation signal after being powered.
  • FIG. 4 is a schematic structural diagram of a fourth embodiment of a power supply circuit according to the present invention.
  • the power supply circuit 1 described in this embodiment is applied to an electronic device (not shown) for powering a power amplifier in the electronic device.
  • the electronic device may be an earphone.
  • 4 is a further description of the power supply circuit of FIG. 1.
  • the power supply circuit 1 includes a power supply 11, an acquisition circuit 13, a processor 15, a voltage dividing circuit 19, and a conversion circuit 111.
  • the power supply 11, the acquisition circuit 13, and the processor 15 may refer to the circuit configuration shown in FIG. 1 or 2.
  • the input end of the voltage dividing circuit 19 is electrically connected to the obtaining circuit 13 , and the output end is electrically connected to the power source 11 and the processor 15 respectively for obtaining the operation according to the operation signal output by the acquiring circuit 13 a second control signal and a third control signal, and outputting the second control signal to the power source 11 to enable the power source 11 to start powering the processor 15 and output the third control signal to the
  • the processor 15 is configured to perform the operation corresponding to the third control signal after the processor 15 receives the power of the power source 11.
  • the voltage dividing circuit 19 divides a signal that does not carry operation information among the operation signals output by the acquisition circuit 13 into the second control signal, and distributes the signal carrying the operation information in the operation signal to the first a third control signal, or the voltage dividing circuit 19 divides the operation signal output by the obtaining circuit 13 into two signals according to a preset ratio, which are respectively the second control signal and the third control signal, and is specifically implemented.
  • the voltage dividing circuit 19 may include serially connected in series a first resistor 191 and a second resistor 193, and the first resistor 191 is connected to the power source 11 at one end, the other end is connected to the common node of the second resistor 193 and the processor 15, and the second resistor 193 is connected to one end.
  • the conversion circuit 111 has one end electrically connected to the power source 11 and the other end electrically connected to the processor 15, and converts the electric energy output by the power source 11 into the electric energy required by the processor 15.
  • the conversion circuit 111 may include, but is not limited to, a direct current-direct current conversion (DC/DC), a low dropout linear regulator circuit (LDO), and an electronic switch circuit. .
  • DC/DC direct current-direct current conversion
  • LDO low dropout linear regulator circuit
  • the conversion circuit 111 may further include an enable end, the enable end of the conversion circuit 111 receives the power output by the power source 11 , and uses the power output by the power source 11 as the conversion circuit 111
  • the enable signal converts the electrical energy output by the power source 11 into electrical energy required by the processor 15 under the control of the enable signal.
  • the power supply circuit detects that the electronic device does not receive the operation signal input by the user within a preset time and the power amplifier in the electronic device does not work, cuts off the power supply to the processor, and reduces the standby state of the electronic device.
  • the power consumption effectively saves power, and when the power supply is not supplying power to the processor, the acquisition circuit inputs the obtained external operation signal to the voltage dividing circuit to divide the operation signal, and after the voltage division
  • the second control signal is used as an enable signal of the power source, and the power source is turned on to supply power to the processor, and the third control signal after the voltage division is used as an operation signal of the processor.
  • the external operation signal is executed. The operation, so when the power supply does not supply power to the processor, the acquisition circuit uses the external operation signal to start the power supply to supply power to the processor, and the processor can normally perform the operation signal after being powered.
  • FIG. 5 is a schematic diagram of a specific circuit of a fifth embodiment of a power supply circuit provided by the present invention.
  • the power supply circuit 1 described in this embodiment is applied to an electronic device (not shown) for powering a power amplifier in the electronic device.
  • the electronic device may be an earphone.
  • the power supply circuit 1 includes a power source 11, an acquisition circuit 13, and a processor 15.
  • the TPS63051 is a chip corresponding to the power source 11 (powered to the MCU), and the MCU is a chip corresponding to the processor 15.
  • External operational signals may include knob power-on events, tact switch depression events, and insertion of external power events.
  • the acquisition circuit 13 obtains a high level external signal, and a corresponding high level is obtained in the corresponding turn_on terminal in FIG. 5, and the high level signal is short on the one hand through the capacitor C1, the diode D3, and the resistor R5.
  • the enable terminal EN of the power source 11 is turned on, so that the power source 11 supplies power to the processor 15, on the other hand, the high level signal obtained by the turn_on terminal is also input to the processor 15, thereby reporting the knob start event to the processor 15 to Causing the processor 15 to perform booting event.
  • the acquisition circuit 13 obtains a low level external signal, and the acquisition circuit 13 performs the acquired low level external signal.
  • the low-level signal is converted into a high-level signal, and a high level is obtained corresponding to the touch_on terminal in FIG. 5, and the high-level signal is turned on to enable the enable terminal EN of the power supply 11 via the diode D2 and the resistor R5.
  • the acquisition circuit 13 passes the acquired low level signal to the input processor 15, thereby reporting a tap event to the processor 15 to cause the processor 15 to perform a corresponding operation. .
  • the acquisition circuit 13 obtains an external signal for accessing the external power source.
  • an external signal of an external power source is obtained corresponding to the Vbus_on terminal, and the acquisition circuit 13 passes the external signal through the diode D1 and the resistor R5 on the one hand.
  • the enable terminal EN of the power source 11 is turned on to cause the power source 11 to supply power to the processor 15, and on the other hand, an external signal is sent to the processor 15, thereby reporting an insertion external power event to the processor 15 to cause the processor 15 to perform the corresponding operation. Operation.
  • generating a high level signal can maintain the enable of the power source 11 to ensure that the processor 15 can continue to obtain power from the power source 11 after the enable control of the power source 11 is completed.
  • the power supply circuit when the power supply circuit detects that the electronic device does not receive the operation signal input by the user within the preset time and the power amplifier in the electronic device does not work, the power supply of the power supply is cut off when the electronic device receives the electronic device.
  • the external signal is used to start the power supply to supply power to the processor, so that the processor can be powered to perform corresponding operations, so that when the power supply does not supply power to the processor, the processor can also work normally, effectively reducing the electrons.
  • the power consumption of the device when the power supply circuit detects that the electronic device does not receive the operation signal input by the user within the preset time and the power amplifier in the electronic device does not work.
  • the processor that monitors and executes the external operation of the electronic device stops.
  • the external signal is used as a power enable signal on one hand to control the power module of the processor to be turned on, and on the other hand, to the processor, so that the processor responds promptly after being powered. Perform appropriate external operations to reduce the amount of power that the electronic device continues to consume.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Power Sources (AREA)
  • Amplifiers (AREA)

Abstract

L'invention concerne un circuit d'alimentation électrique et un dispositif électronique. Le circuit d'alimentation électrique (1) comprend : une alimentation électrique (11), un circuit d'acquisition (13) et un processeur (15). L'alimentation électrique est conçue pour alimenter le processeur. Le circuit d'acquisition est conçu pour acquérir une entrée de signal de fonctionnement par un utilisateur, et envoyer le signal de fonctionnement acquis au processeur. Le processeur est conçu pour : détecter si un dispositif électronique reçoit l'entrée du signal de fonctionnement par l'utilisateur dans un temps prédéfini ou si un amplificateur de puissance dans un dispositif électronique est en fonctionnement sur une durée prédéterminée, et lorsque le processeur ne reçoit pas, dans le délai prédéterminé, l'entrée du signal de fonctionnement par l'utilisateur et que l'amplificateur de puissance dans le dispositif électronique ne fonctionne pas, envoyer un premier signal de commande à l'alimentation électrique, le premier signal de commande étant utilisé pour commander l'interruption d'un circuit d'alimentation électrique, de l'alimentation électrique au processeur. Lorsque le dispositif électronique ne reçoit pas, dans le délai prédéterminé, l'entrée du signal de fonctionnement par l'utilisateur et que l'amplificateur de puissance dans le dispositif électronique ne fonctionne pas, le courant n'est pas envoyé au processeur du dispositif électronique, ce qui permet de réduire la consommation d'énergie du dispositif électronique.
PCT/CN2016/084742 2015-06-03 2016-06-03 Circuit d'alimentation électrique et dispositif électronique WO2016192673A1 (fr)

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CN104953649B (zh) * 2015-06-03 2017-06-30 广东欧珀移动通信有限公司 一种供电电路及电子设备
CN112822001B (zh) * 2020-12-31 2023-03-14 维沃移动通信有限公司 电子设备的控制方法和电子设备

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CN104953649A (zh) * 2015-06-03 2015-09-30 广东欧珀移动通信有限公司 一种供电电路及电子设备
CN204741298U (zh) * 2015-06-03 2015-11-04 广东欧珀移动通信有限公司 一种供电电路及电子设备

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