WO2022234955A1 - Procédé de traitement de bruit de charge sans fil et dispositif électronique le prenant en charge - Google Patents

Procédé de traitement de bruit de charge sans fil et dispositif électronique le prenant en charge Download PDF

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Publication number
WO2022234955A1
WO2022234955A1 PCT/KR2022/004506 KR2022004506W WO2022234955A1 WO 2022234955 A1 WO2022234955 A1 WO 2022234955A1 KR 2022004506 W KR2022004506 W KR 2022004506W WO 2022234955 A1 WO2022234955 A1 WO 2022234955A1
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WIPO (PCT)
Prior art keywords
noise
processor
wireless charging
electronic device
rectifier
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PCT/KR2022/004506
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English (en)
Korean (ko)
Inventor
정명균
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삼성전자 주식회사
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Publication of WO2022234955A1 publication Critical patent/WO2022234955A1/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
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0038—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing pulses or pulse trains according to amplitude)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/26—Measuring noise figure; Measuring signal-to-noise ratio
    • 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
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • 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
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer

Definitions

  • Various embodiments of the present invention relate to a technology for processing wireless charging noise.
  • recently released electronic devices may provide a wireless charging function through a wireless charging circuit.
  • An electronic device including such a wireless charging circuit may charge a battery through a wireless charging pad without a wired connection.
  • an electronic device that receives power and an external electronic device that transmits power use in-band communication (in-band communication) using a frequency of a band that is the same as or adjacent to a frequency used for wireless charging through a coil included in each device. -band communication) can be performed.
  • the electronic device and the external electronic device may share data related to wireless charging through in-band communication.
  • the charging voltage may change, and vibration (vibration) of the capacitor (eg, multi-layer ceramic capacitor (MLCC)) connected to the wireless charging circuit occurs according to the change in the charging voltage.
  • vibration vibration of the capacitor (eg, multi-layer ceramic capacitor (MLCC)) connected to the wireless charging circuit occurs according to the change in the charging voltage.
  • noise may be generated.
  • a special material capacitor eg, tantal capacitor
  • a problem of increasing cost and burning under certain conditions such as heat generation may occur.
  • Various embodiments of the present disclosure may provide a processing method capable of detecting and reducing wireless charging noise without using a high-cost, special material capacitor, and an electronic device supporting the same.
  • various embodiments of the present disclosure may provide a method for reducing wireless charging noise in consideration of an environment in which an electronic device is used and an electronic device supporting the same.
  • An electronic device includes a wireless charging circuit including a rectifier for converting AC power into DC power, a processor electrically connected to the wireless charging circuit, and a wireless charging circuit connected between the wireless charging circuit and the processor a comparator having an output terminal connected to a GPIO port of the processor, and a comparator connected to an output terminal of the rectifier, wherein the noise detection circuit is configured to apply a portion of an output voltage of the rectifier to a first input terminal of the comparator
  • a first resistor element for It may include a capacitor connected to the.
  • the electronic device includes a wireless charging circuit including a rectifier for converting AC power into DC power, a processor electrically connected to the wireless charging circuit, and between the wireless charging circuit and the processor and a noise sensing circuit connected to , wherein the noise sensing circuit is connected between the output terminal of the rectifier and the ADC port of the processor, and may include a capacitor.
  • the method of processing wireless charging noise includes an operation of determining whether a wireless charging state is in the wireless charging state, an operation of detecting noise generated in the wireless charging state, and an operation of detecting the noise generated in the wireless charging state, in response to the detection of the noise, the noise an operation of determining whether is noise according to in-band communication, an operation of determining whether an external environment of the electronic device satisfies a specified condition in response to determining that the noise is noise according to the in-band communication, and the electronic device In response to determining that the external environment of the user satisfies the specified condition, the operation may include reducing the noise.
  • FIG. 1 is a block diagram of an electronic device in a network environment according to various embodiments of the present disclosure
  • FIG. 2 is a diagram for explaining the configuration of an electronic device related to wireless charging noise processing according to an embodiment of the present invention.
  • 3 is a diagram for explaining wireless charging noise generated during in-band communication according to an embodiment of the present invention.
  • FIG 4 is another diagram for explaining wireless charging noise generated during in-band communication according to an embodiment of the present invention.
  • FIG. 5 is a diagram for explaining a circuit for detecting wireless charging noise according to an embodiment of the present invention.
  • FIG. 6 is a diagram for explaining an output voltage of a circuit for detecting wireless charging noise according to an embodiment of the present invention.
  • FIG. 7 is another diagram for explaining an output voltage of a circuit for detecting wireless charging noise according to an embodiment of the present invention.
  • FIG. 8 is a diagram for explaining another circuit for detecting wireless charging noise according to an embodiment of the present invention.
  • FIG. 9 is a diagram for explaining an output voltage of another circuit for detecting wireless charging noise according to an embodiment of the present invention.
  • FIG. 10 is a diagram for explaining another circuit for detecting wireless charging noise according to an embodiment of the present invention.
  • FIG. 11 is a view for explaining a method of processing wireless charging noise according to an embodiment of the present invention.
  • FIG. 12 is a view for explaining a method of reducing wireless charging noise according to an embodiment of the present invention.
  • FIG. 13 is a diagram for explaining a method of adjusting an in-band communication control circuit according to an embodiment of the present invention.
  • FIG. 1 is a block diagram of an electronic device 101 in a network environment 100, according to various embodiments.
  • the electronic device 101 communicates with the electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with at least one of the electronic device 104 and the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 .
  • the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound output module 155 , a display module 160 , an audio module 170 , and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or an antenna module 197 .
  • at least one of these components eg, the connection terminal 178
  • some of these components are integrated into one component (eg, display module 160 ). can be
  • the processor 120 for example, executes software (eg, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120. It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in , process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 .
  • software eg, a program 140
  • the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 .
  • the volatile memory 132 may be stored in , process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 .
  • the processor 120 is a main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor).
  • a main processor 121 eg, a central processing unit or an application processor
  • a secondary processor 123 eg, a graphic processing unit, a neural network processing unit
  • NPU neural processing unit
  • an image signal processor e.g., a sensor hub processor, or a communication processor.
  • the secondary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states.
  • the coprocessor 123 eg, an image signal processor or a communication processor
  • may be implemented as part of another functionally related component eg, the camera module 180 or the communication module 190. have.
  • the auxiliary processor 123 may include a hardware structure specialized for processing an artificial intelligence model.
  • Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which the artificial intelligence model is performed, or may be performed through a separate server (eg, the server 108).
  • the learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited
  • the artificial intelligence model may include a plurality of artificial neural network layers.
  • Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example.
  • the artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.
  • the memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176 ) of the electronic device 101 .
  • the data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto.
  • the memory 130 may include a volatile memory 132 or a non-volatile memory 134 .
  • the program 140 may be stored as software in the memory 130 , and may include, for example, an operating system 142 , middleware 144 , or an application 146 .
  • the input module 150 may receive a command or data to be used by a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 .
  • the input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).
  • the sound output module 155 may output a sound signal to the outside of the electronic device 101 .
  • the sound output module 155 may include, for example, a speaker or a receiver.
  • the speaker can be used for general purposes such as multimedia playback or recording playback.
  • the receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.
  • the display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 .
  • the display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device.
  • the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.
  • the audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 or an external electronic device (eg, a sound output module 155 ) directly or wirelessly connected to the electronic device 101 .
  • the electronic device 102) eg, a speaker or headphones
  • the sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the sensed state. can do.
  • the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.
  • the interface 177 may support one or more specified protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ).
  • the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.
  • the connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102 ).
  • the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).
  • the haptic module 179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense.
  • the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
  • the camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.
  • the power management module 188 may manage power supplied to the electronic device 101 .
  • the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).
  • PMIC power management integrated circuit
  • the battery 189 may supply power to at least one component of the electronic device 101 .
  • battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.
  • the communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel.
  • the communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication.
  • the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a local area network (LAN) communication module, or a power line communication module).
  • a wireless communication module 192 eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module
  • GNSS global navigation satellite system
  • wired communication module 194 eg, : It may include a local area network (LAN) communication module, or a power line communication module.
  • a corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN).
  • a first network 198 eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)
  • a second network 199 eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN).
  • a telecommunication network
  • the wireless communication module 192 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199 .
  • subscriber information eg, International Mobile Subscriber Identifier (IMSI)
  • IMSI International Mobile Subscriber Identifier
  • the electronic device 101 may be identified or authenticated.
  • the wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR).
  • NR access technology includes high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency) -latency communications)).
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communications
  • URLLC ultra-reliable and low-latency
  • the wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example.
  • a high frequency band eg, mmWave band
  • the wireless communication module 192 uses various techniques for securing performance in a high-frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. It may support technologies such as full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna.
  • the wireless communication module 192 may support various requirements defined in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ).
  • the wireless communication module 192 may include a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: Downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) can be supported.
  • a peak data rate eg, 20 Gbps or more
  • loss coverage eg, 164 dB or less
  • U-plane latency for realizing URLLC
  • the antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device).
  • the antenna module 197 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern.
  • the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected from the plurality of antennas by, for example, the communication module 190 . can be selected. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna.
  • other components eg, a radio frequency integrated circuit (RFIC)
  • RFIC radio frequency integrated circuit
  • the antenna module 197 may form a mmWave antenna module.
  • the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.
  • peripheral devices eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)
  • GPIO general purpose input and output
  • SPI serial peripheral interface
  • MIPI mobile industry processor interface
  • the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 .
  • Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 .
  • all or a part of operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 .
  • the electronic device 101 may perform the function or service itself instead of executing the function or service itself.
  • one or more external electronic devices may be requested to perform at least a part of the function or the service.
  • One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 .
  • the electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request.
  • cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used.
  • the electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing.
  • the external electronic device 104 may include an Internet of things (IoT) device.
  • the server 108 may be an intelligent server using machine learning and/or neural networks.
  • the external electronic device 104 or the server 108 may be included in the second network 199 .
  • the electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.
  • FIG. 2 is a diagram for explaining the configuration of an electronic device related to wireless charging noise processing according to an embodiment of the present invention.
  • the electronic device 200 may provide a wireless charging function through the wireless charging circuit 230 .
  • a wireless charging device eg, a wireless charging pad
  • the electronic device 200 transmits AC power in the form of a magnetic field to the coil 210 ) and can be converted to DC power.
  • the wireless charging circuit 230 converts AC power received through the coil 210 into DC power through a rectifier 231, and an LDO regulator (low drop-out regulator) 233. DC power may be transferred to the power management circuit 250 through .
  • the power management circuit 250 may receive DC power and perform a bucking operation to charge the battery.
  • the processor 270 is the rectifier 231, the LDO regulator 233 and the bucking operation to the wireless charging circuit 230 and the power management circuit 250 through the I2C communication (239, 251). You can pass configuration information.
  • the electronic device 200 may transmit data related to wireless charging to a wireless charging device that transmits power.
  • the electronic device 200 may transmit data related to wireless charging to the wireless charging device through in-band communication using an amplitude shift keying (ASK) method.
  • ASK amplitude shift keying
  • the electronic device 200 may perform in-band communication through at least one in-band communication control circuit 220 connected between the coil 210 and the wireless charging circuit 230 .
  • the in-band communication control circuit 220 may include a capacitor 221 and a transistor 223 .
  • the in-band communication control circuit 220 may be activated/deactivated through an on/off operation of the transistor 223 , and when the in-band communication control circuit 220 is activated, the in-band communication control circuit 220 is activated. Band communication may be performed.
  • FIG. 2 shows that the electronic device 200 includes four in-band communication control circuits 220 , the number of the in-band communication control circuits 220 is not limited thereto.
  • the AC power transferred from the wireless charging device to the electronic device 200 has a voltage value changed by a transistor operation inside the wireless charging circuit 230 , and thus the rectifier 231 The voltage rectified by ) may also be changed every time the in-band communication is performed.
  • the capacitor 235 eg, MLCC
  • the capacitor 237 connected to the output terminal 233a of the LDO regulator 233 (eg: MLCC) may generate noise (wireless charging noise) in an audible frequency band.
  • the electronic device 200 may include a noise detection circuit 290 connected between the wireless charging circuit 230 and the processor 270 .
  • the noise detection circuit 290 may be connected to the output terminal 231a of the rectifier 231 to detect the generation of the noise by checking the voltage value of the output terminal 231a.
  • the noise detection circuit 290 includes an output terminal 231a of the rectifier 231 and a general-purpose input/output port (GPIO) of the processor 270 (eg, the GPIO port of FIG. 5 ). (271)). According to another embodiment, the noise detection circuit 290 includes an output terminal 231a of the rectifier 231 and an analog-to-digital converter port of the processor 270 (eg, the ADC port of FIG. 8 ). (273)). According to another embodiment, the electronic device 200 may include two noise detection circuits 290 (eg, the first noise detection circuit 1010 and the second noise detection circuit 1030 of FIG. 10 ). , in this case, one noise detection circuit 290 (eg, the first noise detection circuit 1010 of FIG.
  • the noise sensing circuit 290 includes an output terminal 231a of the rectifier 231 and a GPIO port of the processor 270 (eg, FIG. 10), the other noise detection circuit 290 (eg, the second noise detection circuit 1030 of FIG. 10) is connected to the output terminal 231a of the rectifier 231 and the processor It may be connected to an ADC port of 270 (eg, ADC port 273 of FIG. 10 ).
  • the configuration of the noise sensing circuit 290 will be described in detail with reference to FIGS. 5 to 10 to be described later.
  • FIG. 3 is a diagram for explaining wireless charging noise generated during in-band communication according to an embodiment of the present invention
  • FIG. 4 is a diagram illustrating wireless charging noise generated during in-band communication according to an embodiment of the present invention. It is another drawing for explanation.
  • AC power transferred from the wireless charging device to the electronic device 200 is a transistor inside the wireless charging circuit 230 .
  • the voltage value is changed by the operation, so that the voltage rectified by the rectifier 231 may also change the voltage value whenever the in-band communication is performed.
  • vibration (vibration) of the capacitor 235 connected to the output terminal 231a of the rectifier 231 and the capacitor 237 connected to the output terminal 233a of the LDO regulator 233 occurs.
  • noise in the audible frequency band wireless charging noise
  • the waveform of the voltage that is changed when performing in-band communication using the ASK method (hereinafter referred to as the ASK waveform) is a size and The shape may change.
  • the ASK waveform may include a positive waveform that is higher than the operating voltage and a negative waveform that is lower than the operating voltage.
  • 3 shows a state in which the ASK waveform is a positive waveform
  • FIG. 4 shows a state in which the ASK waveform is a negative waveform. As shown in FIG.
  • the waveform 310 of the voltage of the output terminal 231a of the rectifier 231 largely fluctuates in a state higher than the operating voltage, but the LDO regulator ( The waveform 320 of the voltage of the output terminal 233a of 233 may not vary significantly.
  • the waveform 410 of the voltage of the output terminal 231a of the rectifier 231 is greatly changed in a state lower than the operating voltage, and the LDO The waveform 420 of the voltage of the output terminal 233a of the regulator 233 may also be significantly changed in a state lower than the operating voltage.
  • vibration may occur only in the capacitor 235 connected to the output terminal 231a of the rectifier 231, but when the ASK waveform is a negative waveform, the rectifier 231 Since vibration (tremor) is generated not only in the capacitor 235 connected to the output terminal 231a of the LDO regulator 233 but also in the capacitor 237 connected to the output terminal 233a of the LDO regulator 233 , noise may be greater.
  • FIG. 5 is a diagram for explaining a circuit for detecting wireless charging noise according to an embodiment of the present invention.
  • the electronic device 200 may include a noise detection circuit 500 (eg, the noise detection circuit 290 of FIG. 2 ).
  • the noise detection circuit 500 may be disposed between the wireless charging circuit 230 and the processor 270 .
  • the noise detection circuit 500 may be connected to the output terminal 231a of the rectifier 231 in the wireless charging circuit 230 and the GPIO port 271 of the processor 270 .
  • the noise sensing circuit 500 may include a comparator 510 , a first resistance element 531 , a second resistance element 533 , and a capacitor 550 .
  • the comparator 510 has an output terminal (eg, OUT in FIG. 5 ) connected to the GPIO port 271 of the processor 270 , and an input terminal (eg, IN- and IN+ in FIG. 5 ) of the rectifier 231 . It may be connected to the output terminal 231a.
  • the first resistance element 531 may be connected between an output terminal 231a of the rectifier 231 and a first input terminal (eg, IN ⁇ in FIG. 5 ) of the comparator 510 .
  • the second resistance element 533 may be connected between an output terminal 231a of the rectifier 231 and a second input terminal (eg, IN+ of FIG. 5 ) of the comparator 510 .
  • the capacitor 550 may be connected between the second resistance element 533 and the second input terminal.
  • the first resistance element 531 and the second resistance element 533 divide the output voltage VRECT of the rectifier 231 so that the divided voltages are the first input terminal and the second input terminal of the comparator 510 , respectively.
  • the first resistance element 531 allows a portion of the output voltage of the rectifier 231 to be applied to the first input terminal of the comparator 510
  • the second resistance element 533 uses the rectifier ( Another part of the output voltage of 231 may be applied to the second input terminal of the comparator 510 .
  • the first resistance element 531 and the second resistance element 533 may have the same resistance value.
  • the output voltage of the rectifier 231 may be equally divided and applied to the first input terminal and the second input terminal of the comparator 510 . That is, since the DC voltages applied to the first input terminal and the second input terminal of the comparator 510 are the same, the output value of the comparator 510 may be zero (0).
  • the capacitor 550 is connected between the second resistor element 533 and the second input terminal, the capacitor 550 is applied to the second input terminal of the comparator 510 during the in-band communication using the ASK method.
  • the AC voltage used is changed by the capacitor 550 , and a voltage difference between the first input terminal and the second input terminal of the comparator 510 may be generated due to the change in the AC voltage. For this reason, the output value of the comparator 510 may also be changed in the period in which the in-band communication using the ASK method is performed. Also, a toggle signal may be generated using the changed output value of the comparator 510 .
  • the toggle signal generated in this way is transmitted to the processor 270 through the GPIO port 271 , and the processor 270 can identify whether noise is generated through the toggle signal.
  • the processor 270 may determine whether the noise is noise according to in-band communication based on the toggle signal input through the GPIO port 271 . For example, when the toggle signal is periodically changed (eg, high -> low and low -> high) for a specified time, the processor 270 may determine that the noise is noise according to the in-band communication. have.
  • FIG. 6 is a diagram for explaining an output voltage of a circuit for detecting wireless charging noise according to an embodiment of the present invention
  • FIG. 7 is an output of a circuit for detecting wireless charging noise according to an embodiment of the present invention Another diagram for explaining the voltage.
  • the noise detection circuit for detecting noise generated during wireless charging is a processor (eg, the processor 270 of FIG. 5 ) of GPIO port (eg, GPIO port 271 in FIG. 5 ) a comparator (eg, comparator 510 in FIG. 5 ) whose output is connected to a rectifier in a wireless charging circuit (eg, wireless charging circuit 230 in FIG. 5 )
  • a processor eg, the processor 270 of FIG. 5
  • GPIO port eg, GPIO port 271 in FIG. 5
  • a comparator eg, comparator 510 in FIG. 5
  • the output terminal eg, the output terminal 231a of FIG. 5
  • a first resistance element connected to the first input terminal of the comparator (eg, the resistance element 531 of FIG.
  • a second resistance element connected to the output terminal of the rectifier and the second input terminal of the comparator eg, the resistance element 533 of FIG. 5
  • a capacitor connected between the second resistance element and the second input terminal eg : Capacitor 550 of FIG. 5
  • the ASK method is used. In a section in which -band communication is not performed, the output value of the comparator may be maintained at zero (0).
  • the capacitor is connected between the second resistor element and the second input terminal, the AC voltage applied to the second input terminal of the comparator is applied by the capacitor during the in-band communication using the ASK method. Since the voltage difference between the first input terminal and the second input terminal of the comparator is generated due to the change of the AC voltage, the output value of the comparator may also be changed.
  • FIGS. 6 and 7 show a toggle signal generated using a changed output value of the comparator.
  • the waveform 720 of the output voltage of the rectifier when the ASK waveform is a negative waveform 710 and the waveform 720 of the toggle signal (eg, 1.8V toggle signal) generated using the changed output value of the comparator ) is indicated.
  • FIG. 8 is a diagram for explaining another circuit for detecting wireless charging noise according to an embodiment of the present invention.
  • the electronic device 200 may include a noise detection circuit 800 (eg, the noise detection circuit 290 of FIG. 2 ).
  • the noise detection circuit 800 may be disposed between the wireless charging circuit 230 and the processor 270 .
  • the noise detection circuit 800 may be connected to the output terminal 231a of the rectifier 231 in the wireless charging circuit 230 and the ADC port 273 of the processor 270 .
  • the noise sensing circuit 800 may include a capacitor 830 connected between the output terminal 231a of the rectifier 231 and the ADC port 273 of the processor 270 .
  • the noise sensing circuit 800 may further include a resistance element 810 .
  • the ASK waveform may be flat during the period in which the in-band communication using the ASK method is performed.
  • voltage values in a section in which in-band communication using the ASK method is performed and in a section in which in-band communication using the ASK method is not performed may be identified differently in the ADC port 273 .
  • the processor 270 may identify whether noise is generated and the size of the noise by using the difference in the voltage values identified by the ADC port 273 . Since the processor 270 can identify whether noise is generated and the size of the noise through the noise detection circuit 800 , it can also determine whether to reduce the noise based on the size of the noise.
  • the processor 270 may determine whether the noise is noise according to in-band communication based on a difference in voltage values identified at the ADC port 273 . For example, when the difference between the voltage values identified at the ADC port 273 is greater than or equal to a specified size, the processor 270 may determine that the noise is noise according to the in-band communication.
  • the processor 270 may determine the level of noise based on a difference in voltage values identified at the ADC port 273 . For example, the processor 270 determines the magnitude of the noise by comparing the average value of the voltage value identified in the ADC port 273 at the measurement time and the voltage value identified in the ADC port 273 for a specified time. can do. As another example, the processor 270 may determine the level of the noise using a difference between a maximum value and a minimum value of the voltage value identified in the ADC port 273 for a specified time period.
  • FIG. 9 is a diagram for explaining an output voltage of another circuit for detecting wireless charging noise according to an embodiment of the present invention.
  • a noise detection circuit for detecting noise generated during wireless charging is a wireless charging circuit (eg, the wireless charging circuit 230 of FIG. 8 ))
  • the output terminal of the rectifier eg, the rectifier 231 of FIG. 8
  • the ADC port of the processor eg, the processor 270 of FIG. 8
  • the capacitor eg, the capacitor 830 of FIG. 8
  • the ASK waveform is flat in a period in which in-band communication using the ASK method is performed, and in a period in which in-band communication using the ASK method is performed. and voltage values in a section in which in-band communication using the ASK method is not performed may be identified differently in the ADC port.
  • waveforms 921, 922, and 923 of the output voltage of the noise sensing circuit according to the waveforms 911, 912, and 913 of the output voltage of the rectifier are shown.
  • the amplitude of the waveforms 911, 912, and 913 of the output voltage of the rectifier eg, the magnitude of the changed voltage value or the magnitude of the ripple formed
  • identification at the ADC port A possible difference in output voltage values of the noise detection circuit may also be reduced.
  • the processor may identify whether noise is generated and the magnitude of the noise by using the difference in the voltage values identified at the ADC port.
  • FIG. 10 is a diagram for explaining another circuit for detecting wireless charging noise according to an embodiment of the present invention.
  • the electronic device 200 in order to detect noise generated during wireless charging, the electronic device 200 includes a first noise detection circuit 1010 (eg, the noise detection circuit 500 of FIG. 5 ) and a second noise detection circuit 1030 (eg, the noise sensing circuit 800 of FIG. 8 ) may be included.
  • the first noise detection circuit 1010 and the second noise detection circuit 1030 may be disposed between the wireless charging circuit 230 and the processor 270 .
  • the first noise detection circuit 1010 is connected to the output terminal 231a of the rectifier 231 in the wireless charging circuit 230 and the GPIO port 271 of the processor 270, and the second The noise detection circuit 1030 may be connected to the output terminal 231a of the rectifier 231 and the ADC port 273 of the processor 270 .
  • FIG. 10 shows a state in which there are two noise sensing circuits connected to the processor 270 , the number of the noise sensing circuits is not limited thereto.
  • the electronic device 200 When the electronic device 200 includes at least two circuits for detecting noise generated during wireless charging, the accuracy of noise detection may be increased. In addition, since the at least two or more noise detection circuits are connected to different ports of the processor 270, the electronic device 200 can detect noise generated during wireless charging even in a limited situation in which some ports cannot be used. have. For example, in a situation where the ADC port 273 of the processor 270 cannot be used, the electronic device 200 uses a noise detection circuit (eg, the first Noise generated during wireless charging may be detected using the noise sensing circuit 1010).
  • a noise detection circuit eg, the first Noise generated during wireless charging may be detected using the noise sensing circuit 1010
  • the electronic device includes a wireless charging circuit (eg, the rectifier (eg, the rectifier 231)) for converting AC power into DC power. : wireless charging circuit 230), a processor electrically connected to the wireless charging circuit (eg, processor 270), and a noise sensing circuit (eg, noise sensing circuit 290, connected between the wireless charging circuit and the processor) 500, 1010)), wherein the noise detection circuit includes a comparator (eg, comparator 510) having an output terminal connected to a GPIO port (eg, GPIO port 271) of the processor, and an output terminal of the rectifier (eg, a comparator 510).
  • a wireless charging circuit eg, the rectifier (eg, the rectifier 231)
  • the wireless charging circuit 230 for converting AC power into DC power.
  • a processor electrically connected to the wireless charging circuit (eg, processor 270), and a noise sensing circuit (eg, noise sensing circuit 290, connected between the wireless charging circuit and the processor) 500, 1010)
  • a first resistance element eg, the first resistance element 531 for applying a part of the output voltage of the rectifier to the first input terminal of the comparator, connected to the output terminal of the rectifier a second resistance element (eg, a second resistance element 533) for applying another part of the output voltage of the rectifier to the second input terminal of the comparator, and between the second resistance element and the second input terminal It may include a connected capacitor (eg, capacitor 550).
  • the first resistance element and the second resistance element may have the same resistance value.
  • the processor may be configured to determine whether noise is generated based on a toggle signal input through the GPIO port.
  • the processor when the toggle signal is periodically changed for a specified time, the processor may be configured to determine that the noise is noise according to in-band communication.
  • the processor when it is determined that the noise is the noise according to the in-band communication, the processor adjusts the output voltage of the rectifier or an activated in-band communication control circuit (eg, an in-band communication control circuit) (220)) may be set to perform at least one of deactivation of some.
  • an activated in-band communication control circuit eg, an in-band communication control circuit (220)
  • the electronic device includes a wireless charging circuit (eg, the rectifier (eg, the rectifier 231)) for converting AC power into DC power. : wireless charging circuit 230), a processor electrically connected to the wireless charging circuit (eg, processor 270), and a noise sensing circuit (eg, noise sensing circuit 290, connected between the wireless charging circuit and the processor) 800, 1030)), wherein the noise detection circuit is connected between an output terminal (eg, output terminal 231a) of the rectifier and an ADC port (eg, ADC port 273) of the processor, and a capacitor (eg, : A capacitor 830) may be included.
  • a wireless charging circuit eg, the rectifier (eg, the rectifier 231)
  • wireless charging circuit 230 wireless charging circuit 230
  • a processor electrically connected to the wireless charging circuit eg, processor 270
  • a noise sensing circuit eg, noise sensing circuit 290, connected between the wireless charging circuit and the processor 800, 1030
  • the noise detection circuit is connected
  • the processor may be configured to determine whether noise is generated based on a difference in voltage values identified through the ADC port.
  • the processor may be configured to determine that the noise is noise according to in-band communication when the difference between the voltage values is greater than or equal to a specified level.
  • the processor when it is determined that the noise is the noise according to the in-band communication, the processor adjusts the output voltage of the rectifier or an activated in-band communication control circuit (eg, an in-band communication control circuit) (220)) may be set to perform at least one of deactivation of some.
  • an activated in-band communication control circuit eg, an in-band communication control circuit (220)
  • the processor may be configured to determine the level of noise based on a difference in voltage values identified through the ADC port.
  • the processor is a result of comparing the average value of the voltage value identified at the ADC port at the time of measurement and the voltage value identified at the ADC port for a specified time, or at the ADC port for a specified time It may be set to determine the magnitude of the noise using a difference between a maximum value and a minimum value of the identified voltage value.
  • noise detection circuits 290, 500, 1010 further comprising another noise detection circuit (eg, noise detection circuits 290, 500, 1010) connected between the wireless charging circuit and the processor, wherein the other noise detection circuit is a GPIO of the processor
  • a comparator eg, comparator 510) having an output terminal connected to the port, and a first resistance element (eg, a first resistance element) connected to an output terminal of the rectifier and applying a portion of an output voltage of the rectifier to a first input terminal of the comparator 1 resistance element 531), a second resistance element connected to the output terminal of the rectifier, and for applying another part of the output voltage of the rectifier to the second input terminal of the comparator (eg, a second resistance element 533)) , and a capacitor (eg, a capacitor 550) connected between the second resistance element and the second input terminal.
  • a comparator eg, comparator 510 having an output terminal connected to the port, and a first resistance element (eg, a first resistance element) connected to an
  • FIG. 11 is a view for explaining a method of processing wireless charging noise according to an embodiment of the present invention.
  • the processor eg, the processor 270 of FIG. 2 of the electronic device (eg, the electronic device 200 of FIG. 2 ) may determine whether it is in a wireless charging state. According to an embodiment, the processor may determine whether power is received from an external electronic device (eg, a wireless charging device) through a wireless charging coil (eg, the coil 210 of FIG. 2 ).
  • an external electronic device eg, a wireless charging device
  • a wireless charging coil eg, the coil 210 of FIG. 2
  • the processor may end a process related to the noise detection and reduction operation.
  • the processor may determine whether noise generated during wireless charging is detected.
  • the electronic device may include at least one noise detection circuit (eg, the noise detection circuit 290 of FIG. 2 ) for detecting noise generated during wireless charging.
  • the electronic device includes an output terminal of a rectifier (eg, the rectifier 231 of FIGS. 2 and 5 ) in the wireless charging circuit (eg, the wireless charging circuit 230 of FIGS. 2 and 5 ) (eg, FIG. 2 and a first noise detection circuit (eg, the noise detection circuit 500 of FIG. 5) connected between the output terminal 231a of FIGS. 2 and 5) and the GPIO port of the processor (eg, the GPIO port 271 of FIG. 5) may include
  • the first noise detection circuit includes a comparator having an output connected to the GPIO port of the processor (eg, the comparator 510 in FIG.
  • an output of the rectifier and a first resistance element connected to the first input of the comparator eg : the resistance element 531 of FIG. 5
  • a second resistance element connected to the output terminal of the rectifier and the second input terminal of the comparator eg, the resistance element 533 of FIG. 5
  • the second resistance element and the A capacitor eg, the capacitor 550 of FIG. 5
  • a toggle signal may be generated using the output value of the comparator, and the processor may determine whether noise is generated based on the toggle signal input through the GPIO port.
  • the electronic device includes an output terminal (eg, the rectifier 231 of FIGS. 2 and 8 ) in the wireless charging circuit (eg, the wireless charging circuit 230 of FIGS. 2 and 8 ) in FIGS. 2 and a second noise detection circuit (eg, the noise detection circuit 800 of FIG. 8 ) connected between the output terminal 231a of FIGS. 2 and 8 ) and the ADC port of the processor (eg, the ADC port 273 of FIG. 8 )) may include
  • the second noise sensing circuit may include a capacitor (eg, the capacitor 830 of FIG. 8 ) connected between the output terminal of the rectifier and the ADC port of the processor.
  • the processor may identify whether noise is generated and the magnitude of the noise by using a difference in voltage values identified at the ADC port.
  • the electronic device may include the first noise detection circuit and the second noise detection circuit.
  • the electronic device includes an output terminal (eg, FIGS. 2 and 10 ) of a rectifier (eg, the rectifier 231 of FIGS. 2 and 10 ) in the wireless charging circuit (eg, the wireless charging circuit 230 of FIGS. 2 and 10 ).
  • the first noise detection circuit eg, the first noise detection circuit 1010 of FIG. 10) connected to the output terminal 231a of FIG. 10) and the GPIO port of the processor (eg, the GPIO port 271 of FIG. 10) and the second noise detection circuit (eg, the second noise detection circuit 1030 of FIG. 10 ) connected to the output terminal of the rectifier and the ADC port of the processor (eg, the ADC port 273 of FIG. 10 ) can do.
  • the processor may end a process related to the noise detection and reduction operation.
  • the processor may determine whether the noise is noise according to in-band communication.
  • the electronic device may transmit data related to wireless charging to a wireless charging device that transmits power.
  • the electronic device may transmit data related to wireless charging to the wireless charging device through in-band communication using an amplitude shift modulation (ASK) method.
  • ASK amplitude shift modulation
  • the electronic device may perform in-band communication through at least one in-band communication control circuit (eg, the in-band communication control circuit 220 of FIG. 2 ) connected between the coil and the wireless charging circuit. have.
  • the in-band communication control circuit may include a capacitor (eg, the capacitor 221 of FIG.
  • the in-band communication control circuit may be activated/deactivated through an on/off operation of the transistor, and when the in-band communication control circuit is activated, in-band communication may be performed.
  • the AC power transferred from the wireless charging device to the electronic device has a voltage value changed by a transistor operation inside the wireless charging circuit, and thus the voltage rectified by the rectifier is also the same.
  • -Voltage value can be changed every time band communication is performed.
  • the output terminal of the capacitor eg, the capacitor 235 of FIG. 2
  • the LDO regulator eg, the LDO regulator 233 of FIG. 2
  • the output terminal of the rectifier eg, the output terminal of FIG. 2
  • vibration (vibration) of the capacitor eg, the capacitor 237 of FIG. 2
  • noise wireless charging noise
  • the processor when the electronic device includes the first noise detection circuit connected between the output terminal of the rectifier and the GPIO port of the processor, the processor is configured to operate based on the toggle signal input through the GPIO port. It may be determined whether the noise is noise according to the in-band communication. For example, when the toggle signal is periodically changed (eg, high -> low and low -> high) for a specified time, the processor may determine that the noise is noise according to the in-band communication.
  • the processor when the electronic device includes the second noise detection circuit connected between the output terminal of the rectifier and the ADC port of the processor, the processor is configured to operate based on a difference in voltage values identified at the ADC port. It may be determined whether the noise is noise according to the in-band communication. For example, when the difference between the voltage values identified in the ADC port is greater than or equal to a specified size, the processor may determine that the noise is noise according to the in-band communication.
  • the processor when the electronic device includes the second noise detection circuit connected between the output terminal of the rectifier and the ADC port of the processor, the processor is configured to operate based on a difference in voltage values identified at the ADC port. The magnitude of the noise may be determined.
  • the processor may determine the magnitude of the noise by comparing the average value of the voltage value identified at the ADC port at the measurement time and the voltage value identified at the ADC port for a specified time.
  • the processor may determine the level of the noise using a difference between a maximum value and a minimum value of a voltage value identified in the ADC port for a specified time period.
  • the processor may end a process related to a noise detection and reduction operation.
  • the processor may determine whether the external environment of the electronic device is an environment of a specified condition.
  • the environment of the specified condition may be an environment in which the user of the electronic device may recognize noise generated during wireless charging.
  • the environment of the specified condition may include at least one of a low ambient noise state, a user's sleep state, a dark environment such as at night, a time period set by the user, or a state in which the electronic device is not used. have.
  • the specified condition is when the external noise (ambient noise) is less than the specified level, when the user's sleep information is obtained, when the illuminance value is less than the specified size, when the current time is included in the set time zone, or when the screen of the display is turned off ( off) may include at least one of the state.
  • the processor may end a process related to the noise detection and reduction operation. For example, in a state in which the user uses the electronic device in a place where there is a lot of ambient noise, the user may not recognize the noise generated during wireless charging or may not feel a great discomfort due to the generated noise, in operation 1150 . may not perform the noise reduction operation.
  • the processor may perform a noise reduction operation.
  • the processor may reduce the noise by adjusting (eg, reducing) the output voltage of the rectifier.
  • the processor may reduce the noise by reducing a wireless charging voltage for charging the battery.
  • the processor may reduce the noise by deactivating a part of an activated in-band communication control circuit.
  • the processor may deactivate the in-band communication control circuit by turning off a transistor included in a part of the activated in-band communication control circuit. In other words, the processor may reduce the noise by reducing the number of activated in-band communication control circuits.
  • FIG. 12 is a view for explaining a method of reducing wireless charging noise according to an embodiment of the present invention.
  • a processor eg, the processor 270 of FIG. 2 of the electronic device (eg, the electronic device 200 of FIG. 2 ) may reduce noise generated during wireless charging.
  • the processor may determine whether the number of activated in-band communication control circuits (eg, the in-band communication control circuit 220 of FIG. 2 ) is less than or equal to a specified number.
  • the in-band communication control circuit may be used when the electronic device transmits data related to wireless charging to an external electronic device that transmits power in order to perform wireless charging. Accordingly, during wireless charging, more than a specified number of the in-band communication control circuit may maintain an active state.
  • the processor adjusts (eg, decreases) the output voltage of a rectifier (eg, rectifier 231 of FIG. 2 ) ) to reduce the noise.
  • the processor may reduce the noise by reducing a wireless charging voltage for charging the battery.
  • the processor may deactivate a part of the activated in-band communication control circuit to reduce the noise.
  • the processor may deactivate the in-band communication control circuit by turning off a transistor (eg, the transistor 223 of FIG. 2 ) included in a part of the activated in-band communication control circuit.
  • the processor may reduce the noise by reducing the number of activated in-band communication control circuits.
  • the processor may detect whether noise is generated through a noise detection circuit (eg, the noise detection circuit 290 of FIG. 2 ). For example, the processor may detect whether noise is generated again after the noise reduction operation.
  • a noise detection circuit eg, the noise detection circuit 290 of FIG. 2
  • the processor may end a process related to the noise reduction operation.
  • the processor may return to operation 1210 to perform the noise reduction operation again.
  • operations 1210, 1220, and 1230 in FIG. 12 may be included in operation 1150 in FIG. 11 . Also, operation 1240 in FIG. 12 may be performed after operation 1150 in FIG. 11 .
  • FIG. 13 is a diagram for explaining a method of adjusting an in-band communication control circuit according to an embodiment of the present invention.
  • a processor eg, the processor 270 of FIG. 2 of the electronic device (eg, the electronic device 200 of FIG. 2 ) may reduce noise generated during wireless charging.
  • the processor may reduce the noise by inactivating a part of an activated in-band communication control circuit (eg, the in-band communication control circuit 220 of FIG. 2 ).
  • the processor may deactivate the in-band communication control circuit by turning off a transistor (eg, the transistor 223 of FIG. 2 ) included in a part of the activated in-band communication control circuit.
  • the processor may reduce the noise by reducing the number of activated in-band communication control circuits.
  • the designated circuit of the in-band communication control circuit during wireless charging More than a number can maintain an active state.
  • the processor may prevent (or improve) the disconnection of wireless charging by activating a part of the in-band communication control circuit that has been deactivated.
  • the processor may determine whether the wireless charging terminal is re-recognized. For example, the processor may determine whether the wireless charging terminal is re-recognized after the wireless charging from the wireless charging terminal (or wireless charging device) that transmits power to the electronic device is cut off.
  • the processor may end a process related to the adjustment operation of the in-band communication control circuit.
  • the processor may determine whether the number of re-recognition of the wireless charging terminal exceeds a specified number. For example, the processor may determine whether the number of disconnections of wireless charging exceeds the specified number (eg, two times).
  • the processor may end the process related to the adjustment operation of the in-band communication control circuit.
  • the processor may determine whether there is a deactivation history of the in-band communication control circuit. For example, the processor may check whether there is a history of deactivating the in-band communication control circuit activated for a specified time.
  • the processor may end a process related to the adjusting operation of the in-band communication control circuit.
  • the processor may activate a part of the in-band communication control circuit that has been deactivated.
  • the processor may activate the in-band communication control circuit by turning on a transistor (eg, the transistor 223 of FIG. 2 ) included in the deactivated part of the in-band communication control circuit.
  • the processor may prevent (or improve) the disconnection of wireless charging by activating a part of the in-band communication control circuit that has been deactivated.
  • the processor may reduce the noise by adjusting (eg, reducing) the output voltage of a rectifier (eg, the rectifier 231 of FIG. 2 ).
  • the processor may reduce the noise by reducing a wireless charging voltage for charging the battery.
  • the method of processing wireless charging noise includes an operation of determining whether a wireless charging state is in the wireless charging state (eg operation 1110), and an operation of detecting noise generated in the wireless charging state (eg operation). 1120), in response to detecting the noise, determining whether the noise is noise according to in-band communication (eg, operation 1130), in response to determining that the noise is noise according to in-band communication, An operation of determining whether an external environment of the electronic device satisfies a specified condition (eg, operation 1140), and an operation of reducing the noise (eg, operation) in response to determining that the external environment of the electronic device satisfies the specified condition 1150) may be included.
  • the detecting of the noise may include a comparator having an output terminal connected to a GPIO port of a processor included in the electronic device, an output terminal connected to an output terminal of a rectifier in a wireless charging circuit included in the electronic device, and the rectifier A first resistor element for applying a portion of the output voltage to the first input terminal of the comparator, a second resistor element connected to the output terminal of the rectifier and for applying another portion of the output voltage of the rectifier to the second input terminal of the comparator , and detecting the noise based on a toggle signal input to the GPIO port from a noise sensing circuit including a capacitor connected between the second resistor element and the second input terminal.
  • the operation of determining whether the noise is noise according to the in-band communication includes determining that the noise is noise according to the in-band communication when the toggle signal is periodically changed for a specified time It can include actions.
  • the detecting of the noise may include a noise sensing circuit connected between an output terminal of a rectifier in a wireless charging circuit included in the electronic device and an ADC port of a processor included in the electronic device and including a capacitor. and detecting the noise based on a difference in voltage values input to the ADC port.
  • the determining whether the noise is the noise according to the in-band communication is an operation of determining whether the noise is the noise according to the in-band communication when the difference between the voltage values is greater than or equal to a specified size may include
  • the operation of reducing the noise includes at least one of adjusting an output voltage of a rectifier in a wireless charging circuit included in the electronic device or deactivating a part of an activated in-band communication control circuit may include
  • the operation of reducing the noise includes determining whether the number of activated in-band communication control circuits is equal to or less than a specified number (eg, operation 1210), In response to determining that the number is less than or equal to the specified number, an operation of adjusting an output voltage of a rectifier in a wireless charging circuit included in the electronic device (eg, operation 1220 ), and the number of activated in-band communication control circuits In response to determining that the number is not equal to or less than the specified number, an operation (eg, operation 1230) of deactivating some of the activated in-band communication control circuits may be included.
  • a specified number eg, operation 1210
  • the method of processing the wireless charging noise includes an operation of determining whether the number of times of re-recognition of a wireless charging device transmitting power to the electronic device exceeds a specified number (eg, operation 1320), In response to determining that the number of re-recognition exceeds the specified number, determining whether there is a history of deactivation of the in-band communication control circuit (eg, operation 1330), and there is a history of deactivation of the in-band communication control circuit In response to the determination that the in-band communication control circuit is deactivated, an operation (eg, operation 1340 ) of activating a part may be included.
  • the electronic device may have various types of devices.
  • the electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device.
  • a portable communication device eg, a smart phone
  • a computer device e.g., a smart phone
  • a portable multimedia device e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a wearable device e.g., a smart bracelet
  • a home appliance device e.g., a home appliance
  • first”, “second”, or “first” or “second” may simply be used to distinguish the component from other such components, and refer to those components in other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is “coupled” or “connected” to another (eg, second) component, with or without the terms “functionally” or “communicatively”. When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.
  • module used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logic block, component, or circuit.
  • a module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions.
  • the module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • Various embodiments of the present document include one or more stored in a storage medium (eg, the internal memory 136 or the external memory 138) readable by a machine (eg, the electronic device 101). It may be implemented as software (eg, program 140) including instructions.
  • the processor eg, the processor 120
  • the device eg, the electronic device 101
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • the device-readable storage medium may be provided in the form of a non-transitory storage medium.
  • 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.
  • a signal eg, electromagnetic wave
  • the method according to various embodiments disclosed in this document may be provided in a computer program product (computer program product).
  • Computer program products may be traded between sellers and buyers as commodities.
  • the computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store TM ) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly or online between smartphones (eg: smartphones).
  • a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a memory of a relay server.
  • each component eg, a module or a program of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. have.
  • one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg, a module or a program
  • the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. .
  • operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. , or one or more other operations may be added.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Est divulgué un dispositif électronique comprenant un circuit de charge sans fil comprenant un redresseur pour convertir un courant alternatif en courant continu, un processeur connecté électriquement au circuit de charge sans fil, et un circuit de détection de bruit connecté entre le circuit de charge sans fil et le processeur, le circuit de détection de bruit comprenant : un comparateur ayant une borne de sortie connectée à un port GPIO du processeur; un premier élément de résistance connecté à une borne de sortie du redresseur et conçu pour appliquer une partie d'une tension de sortie du redresseur à une première borne d'entrée du comparateur; un second élément de résistance connecté à la borne de sortie du redresseur et conçu pour appliquer l'autre partie de la tension de sortie du redresseur à une seconde borne d'entrée du comparateur; et un condensateur connecté entre le second élément de résistance et la seconde borne d'entrée. De plus, divers modes de réalisation identifiés dans le présent document sont possibles.
PCT/KR2022/004506 2021-05-06 2022-03-30 Procédé de traitement de bruit de charge sans fil et dispositif électronique le prenant en charge WO2022234955A1 (fr)

Applications Claiming Priority (2)

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KR10-2021-0058734 2021-05-06
KR1020210058734A KR20220151462A (ko) 2021-05-06 2021-05-06 무선 충전 노이즈의 처리 방법 및 이를 지원하는 전자 장치

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WO2022234955A1 true WO2022234955A1 (fr) 2022-11-10

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170100178A (ko) * 2016-02-25 2017-09-04 삼성전기주식회사 무선 전력 송신 장치 및 무선 전력 송신 방법
KR20180013088A (ko) * 2016-07-28 2018-02-07 엘지이노텍 주식회사 무선 전력 송신기 및 무선 전력 수신기
KR20190079815A (ko) * 2017-12-28 2019-07-08 엘지이노텍 주식회사 무선 충전 송신기를 위한 피드백신호 처리 장치
KR20200013320A (ko) * 2018-07-30 2020-02-07 엘지이노텍 주식회사 무선 전력 전송 방법 및 장치
US20200169123A1 (en) * 2018-11-28 2020-05-28 Integrated Device Technology, Inc. Enhanced Foreign Object Detection with Coil Current Sensing in Wireless Power Transfer Systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170100178A (ko) * 2016-02-25 2017-09-04 삼성전기주식회사 무선 전력 송신 장치 및 무선 전력 송신 방법
KR20180013088A (ko) * 2016-07-28 2018-02-07 엘지이노텍 주식회사 무선 전력 송신기 및 무선 전력 수신기
KR20190079815A (ko) * 2017-12-28 2019-07-08 엘지이노텍 주식회사 무선 충전 송신기를 위한 피드백신호 처리 장치
KR20200013320A (ko) * 2018-07-30 2020-02-07 엘지이노텍 주식회사 무선 전력 전송 방법 및 장치
US20200169123A1 (en) * 2018-11-28 2020-05-28 Integrated Device Technology, Inc. Enhanced Foreign Object Detection with Coil Current Sensing in Wireless Power Transfer Systems

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