Electronic device and method for controlling battery charging in electronic device

Abstract

An electronic device according to one embodiment comprises a battery, a load, a charging circuit, and a control circuit. The charging circuit includes a plurality of switches, and may be configured to: receive power, adjusted for each designated charging section according to the charging amount of the battery, from an external electronic device while in a PPS mode; convert the voltage of the received power on the basis of a designated voltage conversion ratio by using the plurality of switches; and supply the voltage-converted power to the battery and the load. The control circuit includes at least one amplifier, and may be configured to control the gate voltage of at least one designated switch among the plurality of switches on the basis of the voltage of the battery rising above a maximum allowable charging voltage or the current of the battery rising above a maximum allowable charging current while in the PPS mode. In addition, various other embodiments may be included.

Description

Electronic devices and methods for controlling battery charging in electronic devices

[0001] The present disclosure relates to a method for controlling battery charging in an electronic device.

[0002] Thanks to the remarkable advancements in recent information and communication technology and semiconductor technology, the proliferation and use of various electronic devices, such as smartphones and tablet PCs, is rapidly increasing. In particular, recent electronic devices can operate using power provided by batteries.

[0003] A power management module (e.g., a power management integrated circuit (PMIC)) in an electronic device can transfer power from a battery to various components within the electronic device (e.g., a processor, memory, or communication chips). The battery within the electronic device can be charged using power provided by an external electronic device (e.g., an external power supply).

[0004] Modern electronic devices can utilize a variety of charging methods, including wired charging, wireless charging, standard charging, and / or fast charging.

[0005] Among various charging methods, direct charging technology can allow an external electronic device (e.g., an external power supply or a PPS (programmable power supply) support device) to perform constant voltage or constant current control for a battery inside an electronic device. For example, direct charging may be a method in which an external power supply varies voltage and / or current for each designated charging section according to the charge level of the battery of the electronic device, and the electronic device receives power corresponding to the voltage and / or current varied by the external power supply and charges it. Another charging technology other than direct charging is, for example, adaptive fast charge (AFC) technology. In the AFC method, constant voltage or constant current control for a battery inside an electronic device is performed by the charging circuit of the electronic device rather than by an external power supply, thereby charging it.

[0006] An electronic device may include a charging circuit (e.g., a hybrid charger or hybrid charging circuit) that operates in a direct charging mode (or mode) when powered from an external power supply supporting PPS, and in another charging mode (or mode) (e.g., adaptive fast charge mode) when powered from an external power supply that does not support PPS, to reduce the mounting area of ​​the charging circuit and save cost.

[0007] When the charging circuit of an electronic device operates in a direct charging mode, the charging circuit can supply power to a load (e.g., a system) and supply power for charging a battery by using power provided according to a voltage and current (e.g., 1 / 2 times the voltage of the external power supply and 2 times the current of the external power supply) determined (or specified) by an external power supply without controlling the voltage and current of the battery and / or the input current while the switching frequency and duty ratio of the charging circuit are each fixed to a specified value.

[0008] Since the charging circuit of an electronic device cannot control the voltage and current of the battery and / or the input current by itself when the battery charging section is switched from constant current (CC) to constant voltage (CV) or the current flowing through the load in the constant voltage (CV) section suddenly changes (e.g. suddenly drops from 2 A to 0 A), even if the battery voltage increases above the maximum allowable charging voltage, an overvoltage condition may occur because the battery voltage cannot be controlled to drop until the external power supply lowers the voltage (e.g. for several ms).

[0009] An electronic device according to an exemplary embodiment may include a battery, a load, a charging circuit, and a control circuit. The charging circuit according to an exemplary embodiment may include a plurality of switches, and may be configured to receive power adjusted for each designated charging section according to a charge amount of the battery from an external electronic device in a PPS mode, convert a voltage of the received power based on a designated voltage conversion ratio using the plurality of switches, and supply the voltage-converted power to the battery and the load. The control circuit according to an exemplary embodiment may be configured to control a gate voltage of at least one designated switch among the plurality of switches based on whether a voltage of the battery becomes higher than a maximum allowable charging voltage or a current of the battery becomes higher than a maximum allowable charging current during the PPS mode.

[0010] In an exemplary embodiment, in an electronic device including a battery, a load, a charging circuit, and a control circuit, a method for controlling battery charging may include an operation of identifying, through the control circuit, that the charging circuit receives power from an external electronic device supporting PPS in a PPS mode and supplies charging current to the battery. In an exemplary embodiment, the method may include an operation of identifying, through the control circuit, whether a voltage of the battery is greater than a maximum allowable charging voltage or a current of the battery is greater than a maximum allowable charging current while supplying charging current to the battery in the PPS mode; and an operation of controlling, through the control circuit, a gate voltage of each of at least one designated switch among switches included in the charging circuit based on whether the voltage of the battery is greater than the maximum allowable charging voltage or the current of the battery is greater than the maximum allowable charging current.

[0011] In an exemplary embodiment, a non-transitory storage medium storing computer-readable instructions may cause the electronic device to perform at least one operation when executed by the electronic device. The at least one operation may include: identifying, through a control circuit, that a charging circuit receives power from an external electronic device supporting PPS in a PPS mode to supply a charging current to the battery; identifying, during the supply of the charging current to the battery in the PPS mode, whether a voltage of the battery is greater than a maximum allowable charging voltage or a current of the battery is greater than a maximum allowable charging current; and controlling, through the control circuit, a gate voltage of each of at least one designated switch among switches included in the charging circuit based on whether the voltage of the battery is greater than the maximum allowable charging voltage or the current of the battery is greater than the maximum allowable charging current.

[0012] Embodiments of the present disclosure can provide an electronic device and a method for controlling battery charging in an electronic device, which can prevent and / or reduce overvoltage from being applied to a battery by adjusting the resistance of a switch in a charging circuit based on an input current, a battery voltage, and / or a battery current input from an external power supply even when the charging circuit operates in a direct charging mode.

[0013] Embodiments of the present disclosure can provide an electronic device and a battery charging control method in an electronic device that can prevent and / or reduce overvoltage from being applied to a battery by adjusting the resistance and duty ratio of a switch in a charging circuit based on an input current, a battery voltage, and / or a battery current input from an external power supply even when the charging circuit operates in a direct charging mode.

[0014] The above and other aspects, features and advantages of specific embodiments of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0015] FIG. 1 is a block diagram of an electronic device within a network environment according to one embodiment.

[0016] FIG. 2 is a block diagram of an electronic device and an external electronic device according to one embodiment.

[0017] FIG. 3 is a circuit diagram illustrating an electronic device including a first charging circuit according to one embodiment.

[0018] FIG. 4 is a circuit diagram illustrating an electronic device including a second charging circuit according to one embodiment.

[0019] FIG. 5 is a circuit diagram illustrating an electronic device including a circuit for adjusting the duty ratio of a second charging circuit according to one embodiment.

[0020] FIG. 6 is a flowchart illustrating a battery charging control operation in an electronic device according to one embodiment.

[0021] FIG. 7 is a diagram showing current and voltage graphs when a charging circuit of an electronic device according to one embodiment receives power from an external electronic device supporting PPS and operates in a second mode.

[0022] FIG. 8 is a diagram showing current and voltage graphs when a control circuit of an electronic device according to one embodiment adjusts the gate voltage and duty ratio of at least one switch of a charging circuit.

[0023] Hereinafter, electronic devices according to various embodiments will be described in more detail with reference to the attached drawings. The term "user" used in various embodiments may refer to a person using an electronic device or a device (e.g., an artificial intelligence electronic device) that uses an electronic device.

[0024] The terms used in this document are intended to describe various exemplary embodiments and may not be intended to limit the scope of the disclosure. Singular expressions may include plural expressions unless the context clearly dictates otherwise. All terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art of the present invention. Terms defined in commonly used dictionaries are understood to have the same or similar meaning as they have in the context of the relevant technology, and are not to be construed in an idealized or overly formal sense unless explicitly defined herein. In some cases, even if a term is defined in this document, it cannot be interpreted to exclude embodiments of the present invention.

[0025] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to one embodiment.

[0026] Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of an electronic device (104) or a server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In various embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In various embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0027] The processor (120) may include various processing circuits and / or multiple processors. For example, the term "processor" as used herein, including in the claims, may include various processing circuits including at least one processor, one or more of which are configured to individually and / or collectively perform the various functions described herein in a distributed manner. As used herein, where "processor," "at least one processor," and "one or more processors" are described as being configured to perform various functions, these terms encompass, for example, without limitation, a single processor performing some of the recited functions, other processor(s) performing other of the recited functions, and even situations where a single processor can perform all of the recited functions. Additionally, the at least one processor may include a combination of processors that perform the various functions enumerated / disclosed, for example, in a distributed manner. The at least one processor may execute program instructions to achieve or perform the various functions. The processor (120) may control at least one other component (e.g., hardware or software component) of the electronic device (101) connected to the processor (120) by executing, for example, software (e.g., program (140)), and may perform various data processing or operations. According to one embodiment, as at least a part of the data processing or operations, the processor (120) may store commands or data received from other components (e.g., sensor module (176) or communication module (190)) in the volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in the non-volatile memory (134).According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or an auxiliary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together with the main processor (121). For example, when the electronic device (101) includes the main processor (121) and the auxiliary processor (123), the auxiliary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a given function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0028] The auxiliary processor (123) may control at least a part of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0029] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0030] 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).

[0031] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0032] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can 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 can be implemented separately from the speaker or as part of the speaker.

[0033] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. According to one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0034] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0035] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can 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, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0036] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, 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.

[0037] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0038] A haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0039] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0040] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0041] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0042] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., 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) (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0043] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) may support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0044] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). According to one embodiment, the antenna module (197) may include an antenna including a radiator including a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to one embodiment, the antenna module (197) may include a plurality of antennas (e.g., 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), may be selected from the plurality of antennas, for example, by the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the selected at least one antenna. According to various embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0045] In one embodiment, the antenna module (197) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent to a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent to a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.

[0046] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0047] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In one embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0048] FIG. 2 is a block diagram of an electronic device (201) and an external electronic device (202) according to one embodiment.

[0049] Referring to FIG. 2, an electronic device (201) (or power receiving device) (e.g., electronic device (101) of FIG. 1) according to one embodiment may receive power (or current) from an external electronic device (202) (or external power supply device or power providing device) (e.g., electronic device (102) of FIG. 2)) while being connected to the external electronic device (202).

[0050] An external electronic device (202) (hereinafter, also referred to as an 'external power supply') according to an embodiment may include a power adapter for fast charging, a travel adapter (TA), a battery pack, a wireless power transmission device (e.g., a wireless charging pad or electronic device), or a device like the same. If the external power supply (202) according to an embodiment is a device that supports PPS (programmable power supply), it may provide (or transmit) power (or current) to the electronic device (201) in a direct charging manner. If the external power supply (202) according to an embodiment is a device that supports PPS, it may provide (or transmit) power (or current) to the electronic device (201) by varying the voltage and / or current of the power (or current) provided to the electronic device (201) by a designated charging section (or state) (e.g., a constant current (CC) section or a constant voltage (CV) section) according to the charge amount of the battery (289) of the electronic device (201). An external power supply (202) according to an embodiment may transmit and receive a signal related to charging of a battery (289) through communication (e.g., power delivery (PD)) with an electronic device (201). An external power supply (202) according to an embodiment may perform constant voltage or constant current control for charging a battery (220) by using a PPS function of USB PD 3.0. An external power supply (202) according to an embodiment may provide (or transmit) a specified power (or current) to an electronic device (201) without separate control according to the charge amount of the battery (289) if the device does not support PPS (e.g., a legacy power adapter).

[0051] An electronic device (201) according to an embodiment may include a power management module (e.g., including various circuits) (288) (e.g., the power management module (188) of FIG. 1), a load (225) (e.g., at least one module, component, and / or circuit included in a system or electronic device (101), and a battery (289). The electronic device (201) according to an embodiment is not limited thereto and may further include various components or may be configured by excluding some of the components. The electronic device (201) according to an embodiment may further include all or part of the electronic device (101) illustrated in FIG. 1 (e.g., a memory (e.g., a memory (130) of FIG. 1), a display (160), a communication module (e.g., including a communication circuit) (190), a processor (120)), and / or other components).

[0052] According to one embodiment, an electronic device (201) can provide power to a load (e.g., at least one module, component and / or circuit included in a system or electronic device (201)) (225) and charge a battery (289) using power (or current) provided (or received) from an external power supply (202) through a power management module (288).

[0053] A power management module (288) according to one embodiment may include an overvoltage protection circuit (281), a charging circuit (283), and / or a control circuit (e.g., including various processing and / or control circuits) (285), and may further include additional circuitry for power management and control within the electronic device (201).

[0054] An overvoltage protection circuit (e.g., an OVP (over voltage protect) circuit) (281) according to one embodiment may be connected between an external power supply device (202) and a charging circuit (283). The overvoltage protection circuit (281) according to one embodiment may protect the charging circuit (283) by blocking overvoltage when power is supplied from the external power supply device (202) at a voltage higher than a specified level. The overvoltage protection circuit (281) according to one embodiment may be omitted or its location may be changed depending on a design change. The overvoltage protection circuit (281) according to one embodiment may be an input terminal protection circuit into which power from the external power supply device (202) is input.

[0055] A charging circuit (283) according to one embodiment may operate differently (or in different modes) based on whether the external electronic device (202) providing power is a PPS-supporting device or a non-PPS-supporting device.

[0056] According to one embodiment, a charging circuit (283) can charge a battery (289) and provide power to a load (225) by adjusting the power (or current) input from an external electronic device (202) for each designated charging section (or state) (e.g., constant current section or constant voltage section) according to the charge amount of the battery (289) of the electronic device (201) when the external electronic device (202) is not a PPS-supporting device (e.g., also referred to as a first mode or non-PPS mode below). According to one embodiment, a charging circuit (283) receives power or current input from an external electronic device (202) that is regulated by a designated charging section (or state) (e.g., constant current section or constant voltage section) according to the charge amount of a battery (289) when the external electronic device (202) is a PPS-supporting device (e.g., also referred to as a second mode or PPS mode hereinafter), converts the received power (or current) based on a designated voltage conversion ratio (e.g., about 2:1) or a designated current conversion ratio (e.g., about 1:2) to charge the battery (289) and provide power to a load (225).

[0057] A charging circuit (283) according to one embodiment may include an input switch (22), a first circuit (24), a second circuit (26), and / or a power supply control circuit (28). In addition, the charging circuit (283) according to one embodiment may include additional circuits required for supplying power to a load (225) and / or supplying charging power to a battery (289).

[0058] An input switch (22) according to one embodiment can control power (or current) input from an external power supply (202). An input switch (22) according to one embodiment can operate in an on state to allow power (or current) from the external power supply (202) to be input, or in an off state to prevent / reduce power (or current) from being input from the external power supply (202).

[0059] A first circuit (24) according to an embodiment may be connected to an input switch (22). The first circuit (24) according to an embodiment may receive a portion of power (or current) provided in a variable manner according to the charge amount of the battery (289) from the external electronic device (202) based on the input switch (22) being turned on in a second mode in which the electronic device (201) is connected to an external electronic device (202) supporting PPS. The first circuit (24) according to an embodiment may include a first plurality of switches and may convert the input power (or current) based on a specified voltage conversion ratio (e.g., about 2:1) or a specified current conversion ratio (e.g., about 1:2) using the first plurality of switches and output the converted first power (or first current). A portion or all of the first power (or first current) according to an embodiment may be transmitted to a load (225) and / or a battery (289). According to one embodiment, a first circuit (24) can charge a battery (289) and provide power to a load (225) by adjusting the power (or current) input from the external electronic device (202) for each designated charging section (or state) (e.g., constant current section or constant voltage section) according to the charge amount of the battery (289) of the electronic device (201) when the external electronic device (202) is not a PPS-supporting device (e.g., also referred to as the first mode or non-PPS mode hereinafter).

[0060] A second circuit (26) according to an embodiment may be connected to an input switch (22). The second circuit (26) according to an embodiment may receive another portion of power (or current) provided in a variable manner according to the charge amount of the battery (289) from the external electronic device (202) based on the input switch (22) being turned on in a second mode in which the electronic device (201) is connected to an external electronic device (202) supporting PPS. The second circuit (26) according to an embodiment may include a second plurality of switches and may convert the input power (or current) based on a specified voltage conversion ratio (e.g., about 2:1) or a specified current conversion ratio (e.g., about 1:2) using the second plurality of switches and output the converted second power (or second current). A portion or all of the second power (or second current) according to an embodiment may be delivered to a load (225) and / or a battery (289).

[0061] A power supply control circuit (28) according to one embodiment may be connected to the output terminals of each of the first circuit (24) and the second circuit (26) and may be connected to a load (225) and a battery (289). The power supply control circuit (28) according to one embodiment may transfer part or all of the first power and the second power output by the first circuit (24) and the second circuit (26), respectively, to the load (225) and / or the battery (289). The power supply control circuit (28) according to one embodiment may include a power supply control switch. According to one embodiment, the power supply control switch may supply part or all of the first power and the second power output by the first circuit (24) and the second circuit (26), respectively, to the battery (289) based on the switching on, or may not supply part or all of the first power and the second power output by the first circuit (24) and the second circuit (26), respectively, to the battery (289) based on the switching off.

[0062] For example, the control circuit (285) according to one embodiment may include the processor 120 described above, and may control the charging circuit (283) to operate in the second mode when the external electronic device (202) is a PPS-supporting device, or may identify a state in which the charging circuit (283) is operating in the second mode. The control circuit (285) according to one embodiment may identify that while the charging circuit (283) is operating in the second mode, the current delivered to the load (225) rapidly (or abruptly) decreases below a specified current value, causing the voltage of the battery (289) to become higher than the maximum allowable charging voltage (VBAT_LIM) (or the current of the battery (289) to become higher than the maximum allowable charging current (IBAT_LIM)). According to one embodiment, the control circuit (285) may control (or adjust (e.g., decrease)) the gate voltage of each of at least one of the first plurality of switches included in the first circuit (24) and the second plurality of switches included in the second circuit (26) based on whether the voltage of the battery (289) becomes higher than the maximum allowable charging voltage (VBAT_LIM) (or whether the current of the battery (289) becomes higher than the maximum allowable charging current (IBAT_LIM)) while the charging circuit (283) is operating in the second mode, thereby adjusting (e.g., increasing) the resistance value so that the voltage of the battery (289) becomes equal to or less than the maximum allowable charging voltage (VBAT_LIM).

[0063] A control circuit (285) according to an embodiment may include various circuits including various amplifiers (e.g., at least one error amplifier) ​​and / or various processing circuits (as described above with respect to the processor (120) so as to be equally applicable to the control circuit (285)) and may acquire an input current (IIN) value, a battery voltage (VBAT) value, and a battery current (IBAT) value of the charging circuit while the charging circuit (283) operates in the second mode. The control circuit (285) according to an embodiment may sense an input current (IIN) value, a battery voltage (VBAT) value, and a battery current (IBAT) value of the charging circuit periodically or continuously while the charging circuit (283) operates in the second mode, or may receive an input current (IIN) value, a battery voltage (VBAT) value, and a battery current (IBAT) value of the charging circuit sensed from a separate sensing circuit (not shown). A control circuit (285) according to an embodiment may amplify the difference (or error) between the input current (IIN) value, the battery voltage (VBAT) value, and the battery current (IBAT) value of the charging circuit obtained while the charging circuit (283) operates in the second mode and the input current value, the designated battery voltage value, and the designated battery current value of the designated charging circuit, using each error amplifier. The control circuit (285) according to an embodiment may select a smaller error value as a control value (or control output value) using a selection circuit (or minimum value selection circuit or min selector) among the errors of the amplified input current (IIN) value, the battery voltage (VBAT) value, and the battery current (IBAT) value of the charging circuit. For example, if the input current value (IIN) of the charging circuit is greater than the input current limit value (IIN*) to be controlled, the output of the input current error amplifier may decrease in the negative direction.A selection circuit according to one embodiment can select as a control value a value that is the largest excess of a value to be controlled among an input current value, a battery voltage value, and a battery current value.

[0064] In one embodiment, the control circuit (285) may control (or adjust (e.g., decrease)) the gate voltage or current of at least one designated (or selected) switch among the first plurality of switches included in the first circuit (24) and the second plurality of switches included in the second circuit (26) based on the selected control value, thereby adjusting (e.g., increase) the resistance value so that the voltage of the battery (289) becomes equal to or less than the maximum allowable charge voltage (VBAT_LIM) or the current of the battery (289) becomes equal to or less than the maximum allowable charge current (IBAT_LIM). In one embodiment, the control circuit (285) may control the gate voltage of each of the designated at least one switch to be adjusted within a designated gate voltage range (e.g., about 10 V (minimum value) to about 20 V (maximum value)) (or a designated switch resistance value range). According to one embodiment, when the voltage of the battery (289) is equal to or greater than the maximum allowable charging voltage (VBAT_LIM) or the current of the battery (289) is equal to or greater than the maximum allowable charging current (IBAT_LIM), the resistance of at least one switch among the first plurality of switches included in the first circuit (24) and the second plurality of switches included in the second circuit (26) increases, thereby reducing the power input to the first circuit (24) and the second circuit (26), thereby lowering the battery current (IBAT) and the current input from the external power supply (202), thereby preventing and / or reducing a battery overvoltage condition.

[0065] According to one embodiment, the control circuit (285) can adjust the duty cycle of the first circuit (24) and / or the second circuit (26) so that the voltage of the battery (289) does not fall below (or is lower than) the maximum allowable charge voltage (VBAT_LIM) while the gate voltage of each of the at least one designated switch is adjusted to the minimum value of the designated gate voltage range. For example, the duty cycle can be lowered from a designated duty cycle of 50% to a designated duty cycle (e.g., 10%) until the voltage of the battery (289) falls below the maximum allowable charge voltage (VBAT_LIM).

[0066] An electronic device according to an embodiment (e.g., an electronic device (101) of FIG. 1 or an electronic device (201) of FIG. 2) may include a battery (e.g., a battery (189) of FIG. 1 or a battery (289) of FIG. 2), a load (e.g., a load (225) of FIG. 2), a charging circuit (e.g., a charging circuit (283) of FIG. 2), and a control circuit (e.g., a control circuit (285) of FIG. 2). The charging circuit according to an embodiment may include a plurality of switches, and may be configured to receive power adjusted for each designated charging section according to a charge amount of the battery from an external electronic device in a PPS mode, convert the voltage of the received power based on a designated voltage conversion ratio using the plurality of switches, and supply the voltage-converted power to the battery and the load. The control circuit according to an embodiment may be configured to control at least one of the plurality of switches based on whether the voltage of the battery becomes higher than a maximum allowable charging voltage or whether the current of the battery becomes higher than a maximum allowable charging current during the PPS mode. It can be set to control the gate voltage.

[0067] The control circuit according to one embodiment may be configured to regulate the gate voltage of each of the at least one specified switch within a specified gate voltage range.

[0068] In one embodiment, the control circuit may be configured to lower the duty ratio of a capacitor voltage divider included in the charging circuit based on whether the voltage of the battery is higher than the maximum allowable charging voltage or the current of the battery is higher than the maximum allowable charging current while the gate voltage of each of the at least one designated switch is adjusted to the minimum value of the designated gate voltage range.

[0069] The control circuit according to one embodiment may include a first error amplifier that amplifies the difference between the input current value of the charging circuit obtained based on the charging circuit operating in the PPS mode and a designated input current value. The control circuit according to one embodiment may include a second error amplifier that amplifies the difference between the battery voltage value obtained based on the charging circuit operating in the PPS mode and a designated battery voltage value. The control circuit according to one embodiment may include a third error amplifier that amplifies the difference between the battery current value obtained based on the charging circuit operating in the PPS mode and a designated battery current value. The control circuit according to one embodiment may include a selection circuit that selects a smaller value among the values ​​amplified from each of the first to third error amplifiers as a control value. The control circuit according to one embodiment may include a gate voltage control circuit that controls a gate voltage of at least one designated switch based on the control value.

[0070] The control circuit according to one embodiment may further include a fourth error amplifier that amplifies the difference between the control value output by the selection circuit and a threshold value associated with the minimum value of the gate voltage range of the at least one designated switch. The control circuit according to one embodiment may further include a duty control signal output circuit that is configured to lower the duty ratio of a 2:1 capacitor voltage divider (e.g., a capacitor voltage divider) included in the charging circuit based on the value amplified by the fourth error amplifier.

[0071] According to one embodiment, the charging circuit may include a first hybrid charger including a first plurality of switches including first, second, third and fourth switches, a flying capacitor, and an inductor.

[0072] The charging circuit according to one embodiment may further include a second hybrid charger connected in parallel with the first hybrid charger and including a second plurality of switches including fifth, sixth, seventh, and eighth switches, a flying capacitor, and an inductor.

[0073] According to one embodiment, the charging circuit may include a hybrid charger including a first plurality of switches including first, second, third, and fourth switches, a flying capacitor, and an inductor, and a second plurality of switches including fifth, sixth, seventh, and eighth switches, and a 2:1 cap voltage divider including a flying capacitor.

[0074] The electronic device according to one embodiment may further include an overvoltage protection circuit that blocks power from the external electronic device from being supplied to the charging circuit.

[0075] The electronic device according to one embodiment may further include a power supply control circuit that supplies or does not supply part or all of the power output by the charging circuit to the load and / or the battery.

[0076] According to one embodiment, the charging circuit (283) of the electronic device (201) may include a first charging circuit of a first type (e.g., a 2-phase hybrid charger (first hybrid charger + second hybrid charger)) or a second charging circuit of a second type (e.g., a hybrid charger + a 2:1 cap voltage divider). According to one embodiment, when the charging circuit (283) of the electronic device (201) includes a first charging circuit of the first type, the first circuit (24) may include a first hybrid charger, and the second circuit (26) may include a second hybrid charger. According to one embodiment, when the charging circuit (283) of the electronic device (201) includes a second charging circuit of the second type, the first circuit (24) may include a hybrid charger, and the second circuit (26) may include a 2:1 cap voltage divider.

[0077] FIG. 3 is a circuit diagram illustrating an electronic device including a first charging circuit according to one embodiment.

[0078] Referring to FIG. 3, an electronic device (301) (or power receiving device) (e.g., electronic device (101) of FIG. 1 or electronic device (201) of FIG. 2) according to one embodiment may receive power (or current) from an external power device (202) (or power providing device) (e.g., electronic device (102) of FIG. 2)) while being connected to the external power device (202).

[0079] An electronic device (301) according to an embodiment may include an OVP (381) (e.g., an overvoltage protection circuit (281) of FIG. 2), a first charging circuit (383) (e.g., a charging circuit (282) of FIG. 2), a control circuit (385) (e.g., a control circuit (285) of FIG. 2), a system (325) (e.g., a load (225) of FIG. 2), and a battery (389) (e.g., a battery (289) of FIG. 2). An electronic device (301) according to an embodiment may further include additional circuits for power management and power control within the electronic device (301).

[0080] According to one embodiment, the OVP (381) can protect the first charging circuit (383) by blocking overvoltage when power is supplied from the external power supply (202) at a voltage higher than a specified level. The OVP (381) according to one embodiment may be omitted or its location may be changed depending on design changes. The OVP (381) according to one embodiment may be an input terminal protection circuit into which power from the external power supply (202) is input.

[0081] A first charging circuit (383) according to an embodiment may operate in a first mode based on whether an external electronic device (202) providing power is a PPS-non-supporting device and may operate in a second mode based on whether the external electronic device (202) is a PPS-supporting device. The first charging circuit (383) according to an embodiment may charge a battery (389) by adjusting power (or current) input from an external electronic device (202) for each designated charging section (or state) (e.g., constant current section or constant voltage section) according to the charge amount of the battery (289) of the electronic device (201) in the first mode, and may provide power to the system (325). According to one embodiment, a first charging circuit (383) receives power or current input from an external electronic device (202) in a second mode, which is adjusted by a designated charging section (or state) (e.g., constant current section or constant voltage section) according to the charge amount of the battery (289), and converts the received power (or current) based on a designated voltage conversion ratio (e.g., about 2:1) or a designated current conversion ratio (e.g., about 1:2) to charge the battery (389) and provide power to the system (325).

[0082] A first charging circuit (383) according to one embodiment may include an input switch (32), a first circuit (hereinafter also referred to as a 'first hybrid charger circuit') (34), a second circuit (hereinafter also referred to as a 'second hybrid charger circuit') (36), and / or a power supply control circuit (38). In addition, the first charging circuit (383) according to one embodiment may include additional circuits required for supplying power to the system (325) and / or supplying charging power to the battery (389).

[0083] An input switch (32) according to one embodiment can control power (or current) input from an external power supply (202). An input switch (32) according to one embodiment can operate in an on state to allow power (or current) from the external power supply (202) to be input, or can operate in an off state to prevent / suppress power (or current) from being input from the external power supply (202).

[0084] A first hybrid charger circuit (34) according to an embodiment may be connected to an input switch (32) at one end. The first hybrid charger circuit (34) according to an embodiment may receive a portion (e.g., 50%) of power (or current) provided in a variable manner according to the charge amount of the battery (389) from an external electronic device (202) based on the input switch (32) being turned on in the second mode. The first hybrid charger circuit (34) according to an embodiment may include a first plurality of switches (34-1, 34-2, 34-3, and 34-4, which may be referred to as 34-1 to 34-4) and may convert the input power (or current) based on a designated voltage conversion ratio (e.g., about 2:1) or a designated current conversion ratio (e.g., about 1:2) using the first plurality of switches and output the converted first power (or first current). In one embodiment, some or all of the first power (or first current) may be delivered to the system (325) and / or the battery (389).

[0085] A first hybrid charger circuit (34) according to an embodiment may include first to fourth switches (34-1 to 34-4), a flying capacitor (34-7), and an inductor (34-9). Each of the first to fourth switches (34-1 to 34-4) according to an embodiment may include a field effect transistor (FET) (e.g., a metal oxide semiconductor FET (MOSFET) or a quantum FET (QFET)).

[0086] According to one embodiment, the first hybrid charger circuit (34) can be operated by a control signal of a specified frequency having a specified duty cycle (e.g., about 50%). For example, the specified frequency can be set to a value equal to the resonant frequency of the flying capacitor (34-7) and the inductor (34-9). According to one embodiment, the first switch (34-1) and the third switch (34-3) can be operated by a first control signal having a specified duty cycle (e.g., about 50%) in one cycle, and the second switch (34-2) and the fourth switch (34-4) according to one embodiment can be operated by a second control signal having a specified duty cycle (e.g., about 50%) in one cycle. The second control signal can have a phase opposite to that of the first control signal. According to one embodiment, in a first time interval, the first switch (34-1) and the third switch (34-3) may be turned on, and the second switch (34-2) and the fourth switch (34-4) may be turned off, and during the first time interval, the fly capacitor (34-7) may be charged and the voltage across the fly capacitor (34-7) may increase. According to one embodiment, in a second time interval, which is a subsequent interval to the first time interval, the first switch (34-1) and the third switch (34-3) may be turned off, and the second switch (34-2) and the fourth switch (34-4) may be turned on, and during the second time interval, the fly capacitor (34-7) may be discharged and the voltage across the fly capacitor (34-7) may decrease, and current may flow in the inductor (34-9). In a second time period according to one embodiment, a first power may be output from the first hybrid charger circuit (34).

[0087] A second hybrid charger circuit (36) according to an embodiment may be connected in parallel with the first hybrid charger circuit (34). The second hybrid charger circuit (36) according to an embodiment may receive another portion (e.g., 50%) of the power (or current) provided from the external electronic device (202) in a variable manner according to the charge amount of the battery (389) based on the input switch (32) being turned on in the second mode. The second hybrid charger circuit (36) according to an embodiment may include a second plurality of switches (36-1, 36-2, 36-3, and 36-4, which may be referred to as 36-1 to 36-4) and may convert the input power (or current) based on a designated voltage conversion ratio (e.g., about 2:1) or a designated current conversion ratio (e.g., about 1:2) using the second plurality of switches and output the converted second power (or second current). Some or all of the second power (or second current) according to one embodiment may be delivered to the system (325) and / or the battery (389).

[0088] A second hybrid charger circuit (36) according to an embodiment may include fifth to eighth switches (36-1 to 36-4), a flying capacitor (36-7), and an inductor (36-9). The second hybrid charger circuit (36) according to an embodiment may be operated by a control signal of a specified frequency having a specified duty ratio (e.g., about 50%). For example, the specified frequency may be set to a value equal to the resonant frequency of the flying capacitor (36-7) and the inductor (36-9). According to one embodiment, the fifth switch (36-1) and the seventh switch (36-3) can be operated by a first control signal having a specified duty cycle (e.g., about 50%) in one cycle, and according to one embodiment, the sixth switch (36-2) and the eighth switch (36-4) can be operated by a second control signal having a specified duty cycle (e.g., about 50%) in one cycle. The second control signal can have a phase opposite to that of the first control signal. According to one embodiment, in the first time interval, the fifth switch (36-1) and the seventh switch (36-3) may be turned on, the sixth switch (36-2) and the eighth switch (36-4) may be turned off, the fly capacitor (36-7) may be charged during the first time interval, the voltage across the fly capacitor (36-7) may increase, and the current flowing in the inductor (36-9) may be close to 0. In the first time interval according to one embodiment, the second power output from the second hybrid charger circuit (36) may be close to 0. According to one embodiment, in a second time interval that is the next time interval of the first time interval, the fifth switch (36-1) and the seventh switch (36-3) may be turned off, the sixth switch (36-2) and the eighth switch (36-4) may be turned on, and during the second time interval, the fly capacitor (36-7) may be discharged, the voltage across the fly capacitor (36-7) may decrease, and current may flow in the inductor (36-9).In a second time period according to one embodiment, a second power may be output from a second hybrid charger circuit (36).

[0089] A power supply control circuit (38) according to an embodiment may be connected to the output terminals of each of the first hybrid charger circuit (34) and the second hybrid charger circuit (36) and may be connected to the system (325) and the battery (389). The power supply control circuit (38) according to an embodiment may transfer a part or all of the first power and the second power output by the first hybrid charger circuit (34) and the second hybrid charger circuit (36), respectively, to the system (325) and / or the battery (389). The power supply control circuit (38) according to an embodiment may include a power supply control switch (38-1). According to one embodiment, a power supply control switch (38-1) may supply part or all of the first power and the second power output by the first hybrid charger circuit (34) and the second hybrid charger circuit (36), respectively, to the battery (389) based on the switching on, or may not supply part or all of the first power and the second power output by the first hybrid charger circuit (34) and the second hybrid charger circuit (36), respectively, to the battery (389) based on the switching off.

[0090] The control circuit (385) according to one embodiment can control the first charging circuit (383) to operate in the second mode or identify a state in which it is operating in the second mode when the external electronic device (202) is a PPS-supporting device. The control circuit (385) according to one embodiment can identify that while the first charging circuit (383) is operating in the second mode, the current delivered to the system (325) rapidly (or abruptly) decreases below a specified current value, causing the voltage of the battery (389) to become higher than the maximum allowable charging voltage (VBAT_LIM) or the current of the battery (389) to become higher than the maximum allowable current (IBAT_LIM). According to one embodiment, the control circuit (385) may control (or adjust (e.g., decrease)) the gate voltage of each of at least one switch designated or selected among the first to fourth switches (34-1 to 34-4) and the fifth to eighth switches (36-1 to 36-4) based on whether the voltage of the battery (389) becomes higher than the maximum allowable charge voltage (VBAT_LIM) or the current of the battery (389) becomes higher than the maximum allowable charge current (IBAT_LIM) while the first charging circuit (383) operates in the second mode, thereby adjusting (e.g., increasing) the resistance value so that the voltage of the battery (389) becomes equal to or less than the maximum allowable charge voltage (VBAT_LIM) or the current of the battery (389) becomes equal to or less than the maximum allowable charge current (IBAT_LIM).A control circuit (385) according to one embodiment controls (or adjusts (e.g., decreases)) the gate voltage of each of the first switch (34-1), the third switch (34-3), the fifth switch (36-1), and the seventh switch (36-3) among the first to fourth switches (34-1 to 34-4) and the fifth to eighth switches (36-1 to 36-4) to adjust (e.g., increase) the resistance value so that the voltage of the battery (389) becomes equal to or less than the maximum allowable charging voltage (VBAT_LIM) or the current of the battery (389) becomes equal to or less than the maximum allowable charging current (IBAT_LIM).

[0091] According to one embodiment, the gate voltage circuit (319) can control (e.g., decrease) the gate voltage of the first switch (34-1) and / or the third switch (34-3) during the first time interval.

[0092] The control circuit (385) according to one embodiment can obtain the input current (IIN) value, the battery voltage (VBAT) value, and the battery current (IBAT) value of the first charging circuit (383) while the first charging circuit (383) operates in the second mode. The control circuit (385) according to one embodiment can sense the input current (IIN) value, the battery voltage (VBAT) value, and the battery current (IBAT) value of the charging circuit periodically or continuously while the first charging circuit (383) operates in the second mode, or can receive the input current (IIN) value, the battery voltage (VBAT) value, and the battery current (IBAT) value of the first charging circuit (383) sensed from a separate sensing circuit (not shown).

[0093] A control circuit (385) according to one embodiment may include a first error amplifier (312), a second error amplifier (314), a third error amplifier (316), a selection circuit (318), and a gate voltage control circuit (319).

[0094] According to one embodiment, the first error amplifier (312) can amplify the difference (or error) between the input current (IIN) value of the charging circuit obtained while the first charging circuit (383) operates in the second mode and the specified input current value and output it to the selection circuit (318).

[0095] A second error amplifier (314) according to one embodiment can amplify the difference (or error) between the battery voltage (VBAT) value obtained while the first charging circuit (383) operates in the second mode and the specified battery voltage value and output the amplified result to the selection circuit (318).

[0096] A third error amplifier (316) according to one embodiment can amplify the difference (or error) between the battery current (IBAT) value obtained while the first charging circuit (383) operates in the second mode and the specified battery current value and output it to the selection circuit (318).

[0097] According to one embodiment, the selection circuit (318) (or minimum value selection circuit or min selector) can select a smaller value among the values ​​received from each of the first error amplifier (312), the second error amplifier (314) and the third error amplifier (316) as a control value (or control output value).

[0098] A gate voltage control circuit (319) according to one embodiment can control (or adjust (e.g., to decrease)) the gate voltage of at least one switch (e.g., the first switch (34-1), the third switch (34-3), the fifth switch (36-1), the seventh switch (36-3)) designated or selected among the first to fourth switches (34-1 to 34-4) and the fifth to eighth switches (36-1 to 36-4) based on a control value selected or output by the selection circuit (318), thereby adjusting (e.g., to increase) the resistance value. A gate voltage control circuit (319) according to one embodiment can control the gate voltages of each of the first switch (34-1), the third switch (34-3), the fifth switch (36-1), and the seventh switch (36-3) to voltages such that the resistance values ​​of each of the first switch (34-1), the third switch (34-3), the fifth switch (36-1), and the seventh switch (36-3) have resistance values ​​such that the voltage of the battery (389) is equal to or less than the maximum allowable charging voltage (VBAT_LIM) or the current of the battery (389) is equal to or less than the maximum allowable charging current (IBAT_LIM).

[0099] According to one embodiment, the gate voltage control circuit (319) can control the gate voltage of each of the first switch (34-1), the third switch (34-3), the fifth switch (36-1), and the seventh switch (36-3) to be adjusted within a specified gate voltage range. According to one embodiment, when the voltage of the battery (289) is equal to or higher than the maximum allowable charging voltage (VBAT_LIM) or the current of the battery (389) is equal to or higher than the maximum allowable charging current (IBAT_LIM), the resistance values ​​of the first switch (34-1), the third switch (34-3), the fifth switch (36-1), and the seventh switch (36-3) increase due to the gate voltage adjustment of each of the first switch (34-1), the third switch (34-3), the fifth switch (36-1), and the seventh switch (36-3), thereby reducing the power input to the first hybrid charger circuit (34) and the second hybrid charger circuit (36), and lowering the battery current (IBAT) and the current input from the external power supply (202), thereby preventing / reducing a battery overcurrent or overvoltage condition.

[0100] FIG. 4 is a circuit diagram illustrating an electronic device including a second charging circuit according to one embodiment.

[0101] Referring to FIG. 4, an electronic device (401) (or power receiving device) (e.g., electronic device (101) of FIG. 1 or electronic device (201) of FIG. 2) according to one embodiment may receive power (or current) from an external power device (202) (or power providing device) (e.g., electronic device (102) of FIG. 2)) while being connected to the external power device (202).

[0102] An electronic device (401) according to an embodiment may include an OVP (481) (e.g., an overvoltage protection circuit (281) of FIG. 2), a second charging circuit (483) (e.g., a charging circuit (282) of FIG. 2), a control circuit (485) (e.g., a control circuit (285) of FIG. 2), a system (425) (e.g., a load (225) of FIG. 2), and a battery (489) (e.g., a battery (289) of FIG. 2). An electronic device (401) according to an embodiment may further include additional circuits for power management and power control within the electronic device (401).

[0103] According to one embodiment, the OVP (481) can protect the second charging circuit (483) by blocking overvoltage when power is supplied from the external power supply (202) at a voltage higher than a specified level. The OVP (481) according to one embodiment may be omitted or its location may be changed depending on design changes. The OVP (481) according to one embodiment may be an input terminal protection circuit into which power from the external power supply (202) is input.

[0104] A second charging circuit (483) according to an embodiment may operate in a first mode based on the fact that the external electronic device (202) providing power is a PPS-non-supporting device, and may operate in a second mode based on the fact that the external electronic device (202) is a PPS-supporting device. The second charging circuit (483) according to an embodiment may charge the battery (489) by adjusting the power (or current) input from the external electronic device (202) for each designated charging section (or state) (e.g., constant current section or constant voltage section) according to the charge amount of the battery (489) of the electronic device (401) in the first mode, and may provide power to the system (425). According to one embodiment, a second charging circuit (483) may receive power or current input from an external electronic device (202) in a second mode, which is adjusted by a designated charging section (or state) (e.g., constant current section or constant voltage section) according to the charge amount of the battery (489), and convert the received power (or current) based on a designated voltage conversion ratio (e.g., about 2:1) or a designated current conversion ratio (e.g., about 1:2) to charge the battery (489) and provide power to the system (425).

[0105] A second charging circuit (483) according to one embodiment may include an input switch (42), a first circuit (hereinafter also referred to as a 'hybrid charger circuit') (e.g., the first circuit (34) of FIG. 3) (44), a 2:1 capacitor voltage divider (46), and / or a power supply control circuit (48). In addition, the second charging circuit (483) according to one embodiment may further include additional circuits required for supplying power to the system (425) and / or supplying charging power to the battery (489).

[0106] An input switch (42) according to one embodiment can control power (or current) input from an external power supply (202). An input switch (42) according to one embodiment can operate in an on state to allow power (or current) from the external power supply (202) to be input, or in an off state to prevent or reduce power (or current) from being input from the external power supply (202).

[0107] A hybrid charger circuit (44) according to an embodiment may have one end connected to an input switch (42) and the other end connected to a power supply control circuit (48). The hybrid charger circuit (44) according to an embodiment may receive a portion (e.g., 50%) of power (or current) provided in a variable manner according to the charge amount of a battery (489) from an external electronic device (202) based on the input switch (42) being turned on in a second mode. The hybrid charger circuit (44) according to an embodiment may include a first plurality of switches (44-1, 44-2, 44-3, and 44-4, which may be referred to as switches 44-1 to 44-4) and may convert the input power (or current) based on a designated voltage conversion ratio (e.g., about 2:1) or a designated current conversion ratio (e.g., about 1:2) using the first plurality of switches and output the converted first power (or first current). In one embodiment, some or all of the first power (or first current) may be delivered to the system (425) and / or the battery (489).

[0108] A hybrid charger circuit (44) according to an embodiment may include first to fourth switches (44-1 to 44-4), a flying capacitor (44-7), and an inductor (44-9). The hybrid charger circuit (44) according to an embodiment may be operated by a control signal of a designated frequency having a designated duty ratio (e.g., about 50%). For example, the designated frequency may be set to a value equal to the resonant frequency of the flying capacitor (44-7) and the inductor (44-9). The first switch (44-1) and the third switch (44-3) according to an embodiment may be operated by a first control signal having a designated duty cycle (e.g., about 50%) in one cycle, and the second switch (44-2) and the fourth switch (44-4) according to an embodiment may be operated by a second control signal having a designated duty cycle (e.g., about 50%) in one cycle. The second control signal may have a phase opposite to that of the first control signal. In one embodiment, the first switch (44-1) and the third switch (44-3) may be turned on in the first time interval, the second switch (44-2) and the fourth switch (44-4) may be turned off, and the fly capacitor (44-7) may be charged during the first time interval, and the voltage across the fly capacitor (44-7) may increase. According to one embodiment, in a second time interval that is a subsequent time interval to the first time interval, the first switch (44-1) and the third switch (44-3) may be turned off, the second switch (44-2) and the fourth switch (44-4) may be turned on, the fly capacitor (44-7) may be discharged during the second time interval, the voltage across the fly capacitor (44-7) may decrease, and current may flow in the inductor (344-9). In the second time interval according to one embodiment, the first power may be output from the hybrid charger circuit (44).

[0109] A 2:1 capacitor voltage divider circuit (46) according to one embodiment may have one end connected to an input switch (42) and the other end connected to a battery (389). The 2:1 capacitor voltage divider circuit (46) according to one embodiment may receive another portion (e.g., 50%) of the power (or current) provided from an external electronic device (202) in a variable manner according to the charge level of the battery (489) based on the input switch (42) being turned on in the second mode. A 2:1 cap divider circuit (46) according to one embodiment may include a second plurality of switches (46-1, 46-2, 46-3, and 46-4, which may be referred to as switches 46-1 to 46-4) and may convert input power (or current) based on a designated voltage conversion ratio (e.g., about 2:1) or a designated current conversion ratio (e.g., about 1:2) using the second plurality of switches and output the converted second power (or second current). The second power (or second current) according to one embodiment may be delivered to a battery (489). The 2:1 cap divider circuit (46) according to one embodiment may include fifth to eighth switches (46-1 to 46-4), and a flying capacitor (46-7).

[0110] A power supply control circuit (48) according to an embodiment may be connected to the system (425) and the battery (489) between the output terminal of the hybrid charger circuit (44) and the output terminal of the 2:1 cap divider circuit (46). The power supply control circuit (48) according to an embodiment may transfer a part or all of the first power and the second power output by the hybrid charger circuit (44) and the 2:1 cap divider circuit (46), respectively, to the system (425) and / or the battery (489). The power supply control circuit (48) according to an embodiment may include a power supply control switch (48-1). According to one embodiment, the power supply control switch (48-1) may supply part or all of the first power output by the hybrid charger circuit (44) to the battery (489) based on the switch being turned on, or may not supply part or all of the first power output by the hybrid charger circuit (44) to the battery (489) based on the switch being turned off.

[0111] The control circuit (485) according to one embodiment can control the second charging circuit (483) to operate in the second mode or identify a state in which it is operating in the second mode when the external electronic device (202) is a PPS-supporting device. The control circuit (485) according to one embodiment can identify that while the second charging circuit (483) is operating in the second mode, the current delivered to the system (425) rapidly (or abruptly) decreases below a specified current value, causing the voltage of the battery (489) to become higher than the maximum allowable charging voltage (VBAT_LIM) or the current of the battery (389) to become higher than the maximum allowable charging current (IBAT_LIM). According to one embodiment, the control circuit (485) may control (or adjust (e.g., decrease)) the gate voltage of each of at least one switch designated or selected among the first to fourth switches (44-1 to 44-4) and the fifth to eighth switches (46-1 to 46-4) based on whether the voltage of the battery (489) becomes higher than the maximum allowable charge voltage (VBAT_LIM) or the current of the battery (389) becomes higher than the maximum allowable charge current (IBAT_LIM) while the second charging circuit (483) operates in the second mode, thereby adjusting (e.g., increasing) the resistance value so that the voltage of the battery (489) becomes equal to or less than the maximum allowable charge voltage (VBAT_LIM) or the current of the battery (389) becomes equal to or less than the maximum allowable charge current (IBAT_LIM).A control circuit (485) according to one embodiment controls (or adjusts (e.g., decreases)) the gate voltage of each of the first switch (44-1), the third switch (44-3), the fifth switch (46-1), and the seventh switch (46-3) among the first to fourth switches (44-1 to 44-4) and the fifth to eighth switches (46-1 to 46-4) to adjust (e.g., increase) the resistance value so that the voltage of the battery (489) becomes equal to or less than the maximum allowable charging voltage (VBAT_LIM) or the current of the battery (389) becomes equal to or less than the maximum allowable charging current (IBAT_LIM).

[0112] The control circuit (485) according to one embodiment can obtain the input current (IIN) value, the battery voltage (VBAT) value, and the battery current (IBAT) value of the first charging circuit (483) while the second charging circuit (483) operates in the second mode. The control circuit (485) according to one embodiment can sense the input current (IIN) value, the battery voltage (VBAT) value, and the battery current (IBAT) value of the charging circuit periodically or continuously while the second charging circuit (483) operates in the second mode, or can receive the input current (IIN) value, the battery voltage (VBAT) value, and the battery current (IBAT) value of the second charging circuit (483) sensed from a separate sensing circuit (not shown).

[0113] A control circuit (485) according to one embodiment may include a first error amplifier (412), a second error amplifier (414), a third error amplifier (416), a selection circuit (418), and a gate voltage control circuit (419).

[0114] According to one embodiment, the first error amplifier (412) can amplify the difference (or error) between the input current (IIN) value of the charging circuit obtained while the second charging circuit (483) operates in the second mode and the specified input current value and output it to the selection circuit (418).

[0115] A second error amplifier (414) according to one embodiment can amplify the difference (or error) between the battery voltage (VBAT) value obtained while the second charging circuit (483) operates in the second mode and the specified battery voltage value and output the amplified result to the selection circuit (418).

[0116] A third error amplifier (416) according to one embodiment can amplify the difference (or error) between the battery current (IBAT) value obtained while the first charging circuit (483) operates in the second mode and the specified battery current value and output it to the selection circuit (418).

[0117] According to one embodiment, the selection circuit (418) (or minimum value selection circuit or min selector) can select a smaller value among the values ​​received from each of the first error amplifier (412), the second error amplifier (414) and the third error amplifier (416) as a control value (or control output value).

[0118] A gate voltage control circuit (419) according to one embodiment can control (or adjust (e.g., to decrease)) the gate voltage of at least one switch (e.g., the first switch (44-1), the third switch (44-3), the fifth switch (46-1), the seventh switch (46-3)) designated or selected among the first to fourth switches (44-1 to 44-4) and the fifth to eighth switches (46-1 to 46-4) based on a control value selected or output by the selection circuit (418), thereby adjusting (e.g., to increase) the resistance value. A gate voltage control circuit (419) according to one embodiment can control the gate voltages of each of the first switch (44-1), the third switch (44-3), the fifth switch (46-1), and the seventh switch (46-3) to voltages such that the resistance values ​​of each of the first switch (44-1), the third switch (44-3), the fifth switch (46-1), and the seventh switch (46-3) have resistance values ​​such that the voltage of the battery (489) is equal to or less than the maximum allowable charging voltage (VBAT_LIM) or the current of the battery (389) is equal to or less than the maximum allowable charging current (IBAT_LIM).

[0119] According to one embodiment, the gate voltage control circuit (419) can control the gate voltage of each of the first switch (44-1), the third switch (44-3), the fifth switch (46-1), and the seventh switch (46-4) to be adjusted within a specified gate voltage range. According to one embodiment, when the voltage of the battery (489) is equal to or greater than the maximum allowable charging voltage (VBAT_LIM) or the current of the battery (389) is equal to or greater than the maximum allowable charging current (IBAT_LIM), the resistance values ​​of each of the first switch (44-1), the third switch (44-3), the fifth switch (46-1), and the seventh switch (46-4) increase due to the gate voltage adjustment of each of the first switch (44-1), the third switch (44-3), the fifth switch (46-1), and the seventh switch (46-3), thereby reducing the power input to the hybrid charger circuit (44) and the 2:1 capacitor voltage divider circuit (46), and lowering the battery current (IBAT) and the current input from the external power supply (202), thereby preventing and / or reducing battery overcurrent and / or overvoltage conditions.

[0120] FIG. 5 is a circuit diagram illustrating an electronic device including a circuit for adjusting the duty ratio of a second charging circuit according to one embodiment.

[0121] Referring to FIG. 5, an electronic device (501) (or power receiving device) (e.g., electronic device (101) of FIG. 1 or electronic device (201) of FIG. 2) according to one embodiment may receive power (or current) from an external power device (202) (or power providing device) (e.g., electronic device (102) of FIG. 2)) while being connected to the external power device (202).

[0122] An electronic device (501) according to an embodiment may include an OVP (581) (e.g., an overvoltage protection circuit (281) of FIG. 2), a second charging circuit (583) (e.g., a charging circuit (282) of FIG. 2), a control circuit (585) (e.g., a control circuit (285) of FIG. 2), a system (525) (e.g., a load (225) of FIG. 2), and a battery (589) (e.g., a battery (289) of FIG. 2). An electronic device (501) according to an embodiment may be an electronic device further including a configuration for duty ratio control of a 2:1 capacitor voltage divider circuit (56) in the second charging circuit (583) in the control circuit (585) of the electronic device (401) of FIG. 4 (e.g., a duty ratio controller (529)).

[0123] A second charging circuit (583) according to an embodiment may include an input switch (51), a first circuit (or hybrid charger circuit) (54), a 2:1 cap voltage divider (56), and / or a power supply control circuit (58). The first circuit (54) according to an embodiment may include first to fourth switches (54-1 to 54-4), a flying capacitor (54-7), and an inductor (54-9). The 2:1 cap voltage divider (56) according to an embodiment may include fifth to eighth switches (56-1 to 56-4), a flying capacitor (56-7). The power supply control circuit (58) according to an embodiment may include a power supply control switch (58-1).

[0124] The configuration and operation of the OVP (581), the second charging circuit (583), the system (525), and the battery (589) of the electronic device (501) according to one embodiment are the same as or similar to the configuration and operation of the OVP (481), the second charging circuit (483), the system (425), and the battery (489) of FIG. 4, and thus, a description thereof may be omitted.

[0125] In one embodiment, the control circuit (585) of the electronic device (501) controls the duty ratio of the 2:1 capacitor voltage divider circuit (56) to be between 50% and a specified duty ratio (e.g., 10%) when the gate voltage of each of the first switch (54-1), the third switch (54-3), the fifth switch (56-1), and the seventh switch (56-3) is regulated to a minimum value (e.g., about 10 V) of a specified gate voltage range (e.g., about 10 V (minimum value) to about 20 V (maximum value)) and when the voltage of the battery (589) does not fall below (or is less than) the maximum allowable charge voltage (VBAT_LIM) or the current of the battery (389) does not fall below (or is less than) the maximum allowable charge current (IBAT_LIM). Or the current of the battery (389) can be lowered to below the maximum allowable charging current (IBAT_LIM).

[0126] A duty cycle controller (529) according to one embodiment may include a fourth error amplifier (529-1) and a duty control signal outputter (529-2).

[0127] According to one embodiment, the fourth error amplifier (529-1) may amplify the difference (or error) between the control value output by the selection circuit (518) and a threshold (limit) (e.g., a value that adjusts the gate voltage to a minimum value (e.g., about 10 V)) and output the amplified difference to the duty control signal output unit (529-2). According to one embodiment, the duty ratio controller (529) may be included in the gate voltage control circuit (519). According to one embodiment, the duty ratio controller (529) may generate a duty ratio control signal by the duty control signal output unit (592-2) included in the gate voltage control circuit (519) based on a signal of the selection circuit (518). The gate voltage control circuit (519) may adjust the duty ratio of the input of the switch gate based on the signal of the selection circuit (518).

[0128] According to one embodiment, a duty control signal output device (529-2) can lower the duty ratio of a 2:1 capacitor voltage divider circuit (56) between 50% and a specified duty ratio (e.g., 10%) based on a value output by a fourth error amplifier (529-1) so that the voltage of the battery (589) becomes below the maximum allowable charge voltage (VBAT_LIM).

[0129] FIG. 6 is a flowchart illustrating a battery charging control operation in an electronic device according to one embodiment.

[0130] Referring to FIG. 6, a control circuit (e.g., a processor (120) or a power management module (188) of FIG. 1, a power management module (288) or a control circuit (285) of FIG. 2, a control circuit (385) of FIG. 3, a control circuit (485) of FIG. 4, or a control circuit (585) of FIG. 5) of an electronic device (e.g., an electronic device (101) of FIG. 1, an electronic device (201) of FIG. 2, an electronic device (301) of FIG. 3, an electronic device (401) of FIG. 4, or an electronic device (501) of FIG. 5) according to an embodiment of the present invention may perform at least one operation from 610 to 630.

[0131] In operation 610, a control circuit (585) according to one embodiment may receive power from an external electronic device (202) that supports PPS and identify that a charging circuit (e.g., a second charging circuit (583)) is operating in a second mode (or PPS charging mode).

[0132] In operation 620, the control circuit (585) according to one embodiment can identify that the current delivered to the system (525) during the supply of charging current to the battery (589) in the second mode has rapidly (or abruptly) decreased below a specified current value, causing the voltage of the battery (589) to (abruptly) increase (become greater than) the maximum allowable charging voltage (VBAT_LIM) (or the current of the battery (589) to (become) higher than the maximum allowable charging current (IBAT_LIM).

[0133] In operation 630, the control circuit (585) according to one embodiment can control (or adjust (e.g., decrease)) the gate voltage of each of at least one switch among the switches included in the second charging circuit (583) to adjust (e.g., increase) the resistance value based on whether the voltage of the battery (589) rapidly increases above the maximum allowable charging voltage (VBAT_LIM) while supplying charging current to the battery (589) in the second mode (or whether the current of the battery (589) rapidly increases above the maximum allowable charging current (IBAT_LIM). In one embodiment, a control circuit (585) controls (or regulates (e.g., regulates) the gate voltages of each of the first switch (54-1), the third switch (54-3), the fifth switch (56-1), and the eighth switch (56-4) among the first to fourth switches (54-1, 54-2, 54-3, and 54-4, which may be referred to as switches 54-1 to 54-4) and the fifth to eighth switches (56-1, 56-2, 56-3, and 56-4, which may be referred to as switches 56-1 to 56-4) based on the voltage of the battery (489) rapidly increasing above the maximum allowable charge voltage (VBAT_LIM) while supplying charge current to the battery (589) in the second mode (or the current of the battery (489) rapidly increasing above the maximum allowable charge current (IBAT_LIM)). By adjusting (e.g., increasing) the resistance value (e.g., decreasing) the voltage of the battery (589) to be equal to or less than the maximum allowable charge voltage (VBAT_LIM) (or the current of the battery (489) to be equal to or less than the maximum allowable charge current (IBAT_LIM)).

[0134] In one embodiment, the control circuit (585) may further perform an operation of controlling the duty ratio of the 2:1 capacitor voltage divider circuit (56) included in the second charging circuit (583) to lower the duty ratio between 50% and a specified duty ratio (e.g., 10%) so that the voltage of the battery (589) becomes less than or equal to the maximum allowable charge voltage (VBAT_LIM) (or the current of the battery (489) becomes less than or equal to the maximum allowable charge current (IBAT_LIM)) when the voltage of the battery (589) does not become less than or equal to the maximum allowable charge voltage (VBAT_LIM) while the gate voltage of at least one switch included in the second charging circuit (583) is adjusted to a specified gate voltage range.

[0135] In an embodiment, an electronic device (e.g., 101 of FIG. 1, 201 of FIG. 2, 301 of FIG. 3, 489 of FIG. 4, or 589 of FIG. 5), including a battery (e.g., 189 of FIG. 1, 289 of FIG. 2, 389 of FIG. 3, 489 of FIG. 4, or 589 of FIG. 5), a load (e.g., 225 of FIG. 2, 325 of FIG. 3, 425 of FIG. 4, or 525 of FIG. 5), a charging circuit (e.g., 283 of FIG. 2, 383 of FIG. 3, 483 of FIG. 4, or 583 of FIG. 5), and a control circuit (e.g., 285 of FIG. 2, 385 of FIG. 3, 485 of FIG. 4, or 585 of FIG. 5), the battery charging control method comprises the control The circuit may include an operation of identifying that the charging circuit receives power from an external electronic device supporting PPS in a PPS mode and supplies a charging current to the battery, an operation of identifying whether a voltage of the battery is greater than a maximum allowable charging voltage or a current of the battery is greater than a maximum allowable charging current through the control circuit while supplying the charging current to the battery in the PPS mode, and an operation of controlling a gate voltage of each of at least one designated switch among switches included in the charging circuit through the control circuit based on whether the voltage of the battery is greater than the maximum allowable charging voltage or the current of the battery is greater than the maximum allowable charging current.

[0136] In the method according to one embodiment, the gate voltage of each of the at least one specified switch can be adjusted within a specified gate voltage range.

[0137] The method according to one embodiment may further include lowering a duty ratio of a capacitor voltage divider included in the charging circuit based on whether the voltage of the battery is higher than a maximum allowable charging voltage or whether the current of the battery is higher than a maximum allowable charging current while the gate voltage of each of the at least one specified switch is adjusted to a minimum value of a specified gate voltage range.

[0138] According to one embodiment, the method may include an operation of amplifying a difference between an input current value of the charging circuit obtained based on the control circuit operating in the PPS mode through a first error amplifier and a designated input current value, an operation of amplifying a difference between a battery voltage value obtained based on the control circuit operating in the PPS mode through a second error amplifier and a designated battery voltage value, an operation of amplifying a difference between a battery current value obtained while and a designated battery current value based on the control circuit operating in the PPS mode through a third error amplifier, an operation of selecting a smaller value among the values ​​amplified from each of the first error amplifier to the third error amplifier as a control value, and an operation of controlling a gate voltage of at least one designated switch based on the control value.

[0139] The method according to one embodiment may further include an operation in which the control circuit amplifies a difference between the selected control value and a threshold value associated with a minimum value of a gate voltage range of the at least one designated switch through a fourth error amplifier, and an operation in which the duty ratio of a 2:1 cap divider included in the charging circuit is lowered based on the difference amplified by the fourth error amplifier.

[0140] In the method according to one embodiment, the charging circuit may include a first hybrid charger including a first plurality of switches including first, second, third, and fourth switches, a flying capacitor, and an inductor, and a second hybrid charger connected in parallel with the first hybrid charger and including a second plurality of switches including fifth, sixth, seventh, and eighth switches, a flying capacitor, and an inductor.

[0141] In the method according to one embodiment, the charging circuit may include a hybrid charger including a first plurality of switches including first, second, third, and fourth switches, a flying capacitor, and an inductor, and a 2:1 cap voltage divider including a second plurality of switches including fifth, sixth, seventh, and eighth switches, and a flying capacitor.

[0142] The method according to one embodiment may further include an overvoltage blocking operation in which the overvoltage protection circuit of the electronic device blocks power of an overvoltage from being supplied to the charging circuit from the external electronic device.

[0143] The method according to one embodiment may further include an operation of controlling a power supply control circuit of the electronic device to supply or not supply part or all of the power output by the charging circuit to the load and / or the battery.

[0144] FIG. 7 is a diagram showing graphs representing current and voltage when a charging circuit of an electronic device according to one embodiment receives power from an external electronic device supporting PPS and operates in a second mode.

[0145] Referring to FIG. 7, a first graph (710) according to an embodiment may have a horizontal axis representing time (ms) and a vertical axis representing current (A). A first waveform (712) of the first graph (710) may represent a current (lsys / A) flowing in a system (e.g., a load (225) of FIG. 2, a system (325) of FIG. 3, a system (425) of FIG. 4, or a system (525) of FIG. 5) of an electronic device (e.g., an electronic device (101) of FIG. 1, an electronic device (201) of FIG. 2, an electronic device (301) of FIG. 3, an electronic device (401) of FIG. 4, or an electronic device (501) of FIG. 5) (hereinafter, the electronic device (501) of FIG. 5 will be described as an example) (hereinafter, the system (525) will be described as an example). In a second graph (720) according to an embodiment, the horizontal axis may represent time (ms) and the vertical axis may represent current (A). The second waveform (722) of the second graph (720) may represent a charging current of a battery (e.g., battery (289) of FIG. 2, battery (389) of FIG. 3, battery (489) of FIG. 4, or battery (589) of FIG. 5) (hereinafter, battery (589) will be described as an example). In a third graph (730) according to an embodiment, the horizontal axis may represent time (ms) and the vertical axis may represent voltage (V). The third waveform (732) of the third graph (730) may represent a charging voltage of the battery (589). In a fourth graph (740) according to an embodiment, the horizontal axis may represent time (ms) and the vertical axis may represent voltage (V). The fourth waveform (742) of the fourth graph (740) may represent the voltage (TA voltage) of the power provided from the external power supply (202). The fifth graph (750) according to one embodiment may have the horizontal axis represent time (ms) and the vertical axis represent current (A). The fifth waveform (752) of the fifth graph (750) may represent the current (TA current) of the power provided from the external power supply (202).

[0146] Referring to the first graph (710) according to one embodiment, when a charging circuit (e.g., a charging circuit (283) of FIG. 2, a first charging circuit (383) of FIG. 3, a second charging circuit (483) of FIG. 4, or a second charging circuit (583) of FIG. 5) (hereinafter, the second charging circuit (583) will be described as an example) operates in a second mode, a system current (712) flowing in the system (525) may change abruptly (e.g., a transient state). For example, when the charging circuit (583) operates in the second mode, the system current (712) may drop abruptly (or suddenly) from 2A to OA. Referring to the third graph (730) according to one embodiment, when the system current (712) is 2A (e.g., before time T1), the battery voltage (VBAT) of the battery (589) is lower than the battery maximum allowable charge voltage (VBAT_LIM), so that the voltage (TA voltage) and current (TA current) of the external power supply (202) can maintain a designated voltage (e.g., about 9.3V) and a designated current (e.g., about 2.5A). According to one embodiment, when the system current (712) suddenly drops from 2A to OA, such as at time T1, the current flowing to the battery (589) can suddenly increase, and the battery voltage (VBAT) (732) can become higher than the battery maximum allowable charge voltage (VBAT_LIM) (e.g., about 4.48V) after time T1. In one embodiment, a problem may occur if the battery voltage (VBAT) remains in an overvoltage state higher than the battery maximum allowable charge voltage (VBAT_LIM) for several ms after time T1 before the external power supply (202) reduces the voltage according to the PPS algorithm when the charging circuit (583) operates in the second mode.

[0147] In an embodiment, when the battery voltage (VBAT) becomes higher than the battery maximum allowable charge voltage (VBAT_LIM) (e.g., about 4.48 V) due to a sudden drop in the system current (712) from 2 A to OA at time T1, the control circuit (586) of the electronic device (501) may control (or adjust (e.g., decrease)) the gate voltage of each of at least one switch designated (or selected) among the switches included in the second charging circuit (583) to adjust (e.g., increase) the resistance value, thereby preventing the voltage of the battery (589) from exceeding the maximum allowable charge voltage (VBAT_LIM).

[0148] FIG. 8 is a diagram showing graphs representing current and voltage when a control circuit of an electronic device according to one embodiment adjusts the gate voltage and duty ratio of at least one switch of a charging circuit.

[0149] Referring to FIG. 8, a sixth graph (810) according to an embodiment may have a horizontal axis representing time (ms) and a vertical axis representing current (A). A sixth waveform (812) of the sixth graph (810) may represent a current (lsys / A) flowing in a system (e.g., a load (225) of FIG. 2, a system (325) of FIG. 3, a system (425) of FIG. 4, or a system (525) of FIG. 5) of an electronic device (e.g., an electronic device (101) of FIG. 1, an electronic device (201) of FIG. 2, an electronic device (301) of FIG. 3, an electronic device (401) of FIG. 4, or an electronic device (501) of FIG. 5) (hereinafter, the electronic device (501) of FIG. 5 will be described as an example) (hereinafter, the system (525) will be described as an example). In a seventh graph (820) according to an embodiment, the horizontal axis may represent time (ms) and the vertical axis may represent current (A). The seventh waveform (822) of the seventh graph (820) may represent a charging current of a battery (e.g., battery (289) of FIG. 2, battery (389) of FIG. 3, battery (489) of FIG. 4, or battery (589) of FIG. 5) (hereinafter, battery (589) will be described as an example). In an eighth graph (830) according to an embodiment, the horizontal axis may represent time (ms) and the vertical axis may represent voltage (V). The eighth waveform (832) of the eighth graph (830) may represent a charging voltage of the battery (589). In a ninth graph (840) according to an embodiment, the horizontal axis may represent time (ms) and the vertical axis may represent voltage (V). The ninth waveform (842) of the ninth graph (840) may represent a gate voltage. The tenth graph (850) according to an embodiment may have a horizontal axis representing time (ms) and a vertical axis representing a duty ratio. The tenth waveform (852) of the tenth graph (850) may represent a duty ratio of a 2:1 capacitor voltage divider circuit (56). The eleventh graph (860) according to an embodiment may have a horizontal axis representing time (ms) and a vertical axis representing voltage (V).The eleventh waveform (862) of the eleventh graph (860) may represent the voltage (TA voltage) of the power provided from the external power supply (202). The twelfth graph (870) according to one embodiment may have the horizontal axis represent time (ms) and the vertical axis represent current (A). The twelfth waveform (872) of the twelfth graph (870) may represent the current (TA current) of the power provided from the external power supply (202).

[0150] Referring to the sixth graph (810) according to one embodiment, the control circuit (586) of the electronic device (501) can adjust the gate voltage of at least one switch included in the second charging circuit (583) to a minimum value (e.g., about 10 V) of a specified gate voltage range (e.g., about 10 V (minimum set value) to about 20 V (maximum set value)) when the battery voltage (VBAT) becomes higher than the battery maximum allowable charge voltage (VBAT_LIM) (e.g., about 4.48 V) due to a rapid drop in the system current (812) from 2 A to OA at time T2. Accordingly, the battery voltage (VBAT) may be temporarily stabilized, but in a case where the voltage of the battery (589) does not fall below (or is lower than) the maximum allowable charging voltage (VBAT_LIM) even when the gate voltage of at least one switch is adjusted (842) to the minimum value of the specified gate voltage range, the control circuit (586) according to one embodiment may lower the duty ratio of the 2:1 capacitor voltage divider circuit (56) included in the second charging circuit (583) from 50% to a duty ratio (e.g., 10%) at which the voltage of the battery (589) falls below the maximum allowable charging voltage (VBAT_LIM) (e.g., 20%) (852), thereby maintaining the voltage of the battery (589) so as not to exceed the maximum allowable charging voltage (VBAT_LIM). According to one embodiment, the control circuit (586) controls the voltage of the battery (589) so that it does not exceed the maximum allowable charge voltage (VBAT_LIM), and then, when the voltage or current of the battery (589) decreases, the control circuit can increase the voltage of the first switch (54-1) and the third switch (54-3) and increase the duty ratio to increase the current or voltage again, or increase the duty ratio and increase the voltage of the first switch (54-1) and the third switch (54-3).

[0151] An electronic device according to an embodiment disclosed in this document may take various forms. The electronic device may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, a home appliance, or other such devices. The electronic device according to an embodiment of this document is not limited to the aforementioned devices.

[0152] The embodiments of this document and the terminology used herein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another (e.g., a second component), with or without the terms "functionally" or "communicatively," the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0153] The term "module" used in one embodiment of this document may include a unit implemented in hardware, software, firmware, or a combination thereof, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0154] An embodiment of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101) or an electronic device (301)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' means that the storage medium is a tangible device and may not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0155] According to one embodiment, the method according to one embodiment disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0156] According to an embodiment of the present disclosure, a non-transitory storage medium storing commands is configured to cause the electronic device to perform at least one operation when the commands are executed by the electronic device, wherein the at least one operation may include: an operation of identifying, through a control circuit, that a charging circuit receives power from an external electronic device supporting PPS in a PPS mode and supplies a charging current to a battery; an operation of identifying, through the control circuit during the supply of the charging current to the battery in the PPS mode, whether a voltage of the battery is greater than a maximum allowable charging voltage or a current of the battery is greater than a maximum allowable charging current; and an operation of controlling, through the control circuit, a gate voltage of each of at least one designated switch among switches included in the charging circuit based on whether the voltage of the battery is greater than the maximum allowable charging voltage or the current of the battery is greater than the maximum allowable charging current.

[0157] According to one embodiment, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to one embodiment, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to one embodiment, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0158] While the present disclosure has been illustrated and described with reference to various exemplary embodiments, it is to be understood that the various exemplary embodiments are intended to be illustrative and not limiting. It will be further understood by those skilled in the art that various changes in form and detail may be made without departing from the true spirit and scope of the present disclosure, including the appended claims and their equivalents. It will also be understood that any embodiment(s) described herein may be used in conjunction with any other embodiment(s) described herein.

Claims

1. In electronic devices, battery; burden; charging circuit; and Containing a control circuit, The charging circuit comprises a plurality of switches, and is configured to receive power regulated by a designated charging section according to the charge amount of the battery from an external electronic device in a PPS (programmable power supply) mode, convert the voltage of the received power based on a designated voltage conversion ratio using the plurality of switches, and supply the voltage-converted power to the battery and the load. An electronic device wherein the control circuit comprises at least one amplifier and is configured to control a gate voltage of at least one designated switch among the plurality of switches based on whether the voltage of the battery becomes higher than a maximum allowable charge voltage or whether the current of the battery becomes higher than a maximum allowable charge current during the PPS mode.

2. In paragraph 1, The above control circuit, An electronic device configured to control the gate voltage of each of the at least one specified switch within a specified gate voltage range.

3. In paragraph 1, The above control circuit, An electronic device configured to lower the duty ratio of a capacitor voltage divider included in the charging circuit based on whether the voltage of the battery is higher than the maximum allowable charging voltage or the current of the battery is higher than the maximum allowable charging current while the gate voltage of each of the at least one specified switch is adjusted to the minimum value of the specified gate voltage range.

4. In paragraph 1, The above control circuit, A first error amplifier for amplifying the difference between the input current value of the charging circuit obtained based on the charging circuit operating in the PPS mode and a designated input current value; A second error amplifier for amplifying the difference between the acquired battery voltage value and the specified battery voltage value based on the charging circuit operating in the PPS mode; A third error amplifier for amplifying the difference between the acquired battery current value and the specified battery current value based on the charging circuit operating in the PPS mode; A selection circuit that selects a smaller value among the values ​​amplified from each of the first error amplifier, the second error amplifier, and the third error amplifier as a control value; and An electronic device comprising a gate voltage control circuit that controls a gate voltage of at least one specified switch based on the control value.

5. In paragraph 4, The above control circuit, A fourth error amplifier that amplifies the difference between the control value output by the above selection circuit and a threshold value associated with the minimum value of the gate voltage range of at least one of the above-described switches; and An electronic device further comprising a duty control signal output circuit configured to lower the duty ratio of a 2:1 cap divider included in the charging circuit based on the value amplified by the fourth error amplifier.

6. In paragraph 1, The above charging circuit includes a first hybrid charger, The above first hybrid charger is an electronic device including a first plurality of switches including first, second, third, and fourth switches, a flying capacitor, and an inductor.

7. In paragraph 1, The above charging circuit further includes a second hybrid charger, An electronic device comprising a second plurality of switches, a flying capacitor, and an inductor, wherein the second hybrid charger is connected in parallel with the first hybrid charger and includes a fifth, sixth, seventh, and eighth switches.

8. In paragraph 1, The above charging circuit, A hybrid charger comprising a first plurality of switches, including first, second, third, and fourth switches, a flying capacitor, and an inductor; and An electronic device comprising a second plurality of switches including fifth, sixth, seventh, and eighth switches, and a 2:1 capacitor voltage divider including a flying capacitor.

9. In paragraph 1, An electronic device further comprising an overvoltage protection circuit for blocking power of overvoltage from the external electronic device from being supplied to the charging circuit.

10. In paragraph 1, An electronic device further comprising a power supply control circuit for supplying or not supplying part or all of the power output by the charging circuit to the load and / or the battery.

11. In an electronic device including a battery, a load, a charging circuit, and a control circuit, a method for controlling battery charging, An operation of identifying, through the control circuit, that the charging circuit receives power from an external electronic device supporting PPS in the PPS mode and supplies charging current to the battery; An operation for identifying whether the voltage of the battery is greater than the maximum allowable charging voltage or the current of the battery is greater than the maximum allowable charging current through the control circuit while supplying the charging current to the battery in the PPS mode; and A method comprising: controlling a gate voltage of each of at least one of the switches included in the charging circuit through the control circuit based on whether the voltage of the battery is greater than a maximum allowable charging voltage or whether the current of the battery is greater than a maximum allowable charging current.

12. In paragraph 11, A method wherein the gate voltage of each of the at least one switch specified above is controlled within a specified gate voltage range.

13. In paragraph 11, A method further comprising an operation of lowering a duty ratio of a capacitor voltage divider included in the charging circuit based on whether the voltage of the battery is higher than a maximum allowable charging voltage or whether the current of the battery is higher than a maximum allowable charging current while the gate voltage of each of the at least one specified switch is adjusted to a minimum value of a specified gate voltage range.

14. In paragraph 11, An operation of amplifying the difference between the input current value of the charging circuit obtained based on the control circuit operating in the PPS mode through the first error amplifier and the specified input current value; An operation of amplifying the difference between the acquired battery voltage value and the specified battery voltage value based on the above control circuit operating in the PPS mode through the second error amplifier; An operation of amplifying the difference between the battery current value obtained based on the above control circuit operating in the PPS mode and the specified battery current value through the second error amplifier; An operation of selecting a smaller value among the values ​​amplified from each of the first, second, and third error amplifiers as a control value; and A method comprising an operation of controlling a gate voltage of at least one specified switch based on the control value.

15. In a non-transitory storage medium storing commands, the commands are configured to cause the electronic device to perform at least one operation when executed by the electronic device, An operation to identify through the control circuit that the charging circuit is receiving power from an external electronic device supporting PPS in PPS mode and supplying charging current to the battery; An operation for identifying whether the voltage of the battery is greater than the maximum allowable charging voltage or the current of the battery is greater than the maximum allowable charging current through the control circuit while supplying the charging current to the battery in the PPS mode; and A storage medium including an operation for controlling a gate voltage of each of at least one of the switches included in the charging circuit through the control circuit based on whether the voltage of the battery is greater than the maximum allowable charging voltage or whether the current of the battery is greater than the maximum allowable charging current.

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