Power supply circuit and electronic device comprising same

Abstract

This power supply circuit may comprise: an input portion for obtaining power from a power supply; an output portion for providing power to an electronic component; a transistor arranged between the input portion and the output portion; a controller for providing an over-voltage (OV) protection function by selectively turning on or off a gate of the transistor, according to a comparison result of comparing a voltage of a control signal with a threshold value configured for the OV protection function; a resistor circuit arranged in parallel to the output portion; and a detection circuit connected to the resistor circuit to obtain at least a portion of a voltage applied to the output portion. The detection circuit may be configured to provide the controller with the control signal having a voltage greater than the threshold value when the voltage applied to the output portion is greater than a clamping voltage, and provide the controller with the control signal having a voltage less than or equal to the threshold value when the voltage applied to the output portion is less than or equal to the clamping voltage.

Description

Power supply circuit and electronic device including same

[0001] The present disclosure relates to a power supply circuit and an electronic device including the power supply circuit.

[0002] Electronic devices in a network system may be subjected to voltages exceeding their normal operating range due to transient conditions or malfunctions. The power system for the electronic devices may be capable of shutting off power to the electronic devices via a hot-swap controller equipped with overvoltage or undervoltage protection functions.

[0003] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art related to the present disclosure.

[0004] In embodiments, a power supply circuit is provided. The power supply circuit may include an input portion for obtaining power from a power supply, an output portion for providing power to an electronic component, a transistor disposed between the input portion and the output portion, a controller for providing an over-voltage (OV) protection function by selectively turning on or off a gate of the transistor according to a result of comparing a voltage of a control signal with a threshold configured for an OV protection function, a resistor circuit disposed in parallel with the output portion, and a detection circuit connected to the resistor circuit for obtaining at least a portion of a voltage applied to the output portion. The detection circuit may be configured to provide the control signal having a voltage greater than the threshold value to the controller when the voltage applied to the output portion is higher than a clamping voltage, and to provide the control signal having a voltage lower than or equal to the threshold value to the controller when the voltage applied to the output portion is lower than or equal to the clamping voltage. The clamping voltage may be lower than or equal to an allowable voltage of the electronic component.

[0005] In embodiments, an electronic device is provided. The electronic device may include a processor and a power supply circuit configured to provide power to the processor. The power supply circuit may include an input portion for obtaining power from a power supply, an output portion for providing power to an electronic component, a transistor disposed between the input portion and the output portion, a controller for providing an over-voltage (OV) protection function by selectively turning on or off a gate of the transistor according to a result of comparing a voltage of a control signal with a threshold configured for an OV protection function, a resistor circuit disposed in parallel with the output portion, and a detection circuit connected to the resistor circuit for obtaining at least a portion of a voltage applied to the output portion. The detection circuit may be configured to provide the control signal having a voltage greater than the threshold value to the controller when the voltage applied to the output portion is higher than a clamping voltage, and to provide the control signal having a voltage lower than or equal to the threshold value to the controller when the voltage applied to the output portion is lower than or equal to the clamping voltage. The above clamping voltage may be lower than the allowable voltage of the electronic component.

[0006] Figure 1a illustrates a wireless communication system.

[0007] Figure 1b illustrates an example of network entities of an electronic device.

[0008] Figure 2 shows an example of a power supply circuit.

[0009] Figure 3 shows the components of the detection circuit.

[0010] Figures 4a and 4b show examples of detection circuits.

[0011] Figure 5 shows another example of a detection circuit.

[0012] Figures 6a, 6b, and 6c show examples of overvoltage control using a detection circuit.

[0013] Figure 7 illustrates examples of components of an electronic device.

[0014] The terms used in this disclosure are used only to describe specific embodiments and may not be intended to limit the scope of other embodiments. The singular expression may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by those of ordinary skill in the art described in this disclosure. Terms defined in general dictionaries among the terms used in this disclosure may be interpreted as having the same or similar meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined in this disclosure. In some cases, even if a term is defined in this disclosure, it cannot be interpreted to exclude embodiments of the present disclosure.

[0015] The various embodiments of the present disclosure described below illustrate a hardware-based approach as an example. However, since the various embodiments of the present disclosure include techniques utilizing both hardware and software, the various embodiments of the present disclosure do not exclude a software-based approach.

[0016] In the following description, terms referring to signals (e.g., signal, information, message, signaling), terms for operational states (e.g., step, operation, procedure), terms referring to network entities, terms referring to components of devices, terms referring to parts of electronic devices (e.g., substrate, PCB (printed circuit board), FPCB (flexible PCB), module, antenna, antenna element, circuit, processor, chip, IC (integrated circuit), component, device), terms referring to circuits (e.g., control circuit, auxiliary circuit, operational circuit, operational circuit, RF circuit, PCB, FPCB, signal line, feeding line, data line, RF signal line, antenna line, RF path, RF module, splitter, divider, coupler, combiner), etc. are examples for convenience of description. Therefore, the present disclosure is not limited to the terms described below, and other terms having equivalent technical meanings may be used. In addition, the terms '...bu', '...gi', '...mul', '...che', etc. used below may mean at least one shape structure or a unit that processes a function.

[0017] In addition, in the present disclosure, expressions such as "more than" or "less than" may be used to determine whether a specific condition is satisfied or fulfilled, but this is merely a description for expressing an example and does not exclude descriptions such as "more than" or "less than." A condition described as "more than" may be replaced with "more than," a condition described as "less than" may be replaced with "less than," and a condition described as "more than and less than" may be replaced with "more than and less than." In addition, hereinafter, "A" to "B" mean at least one of elements from A (including A) to B (including B). hereinafter, "C" and / or "D" mean at least one of "C" or "D," that is, including {"C", "D", "C" and "D"}.

[0018] Figure 1a illustrates a wireless communication system.

[0019] Referring to FIG. 1A, FIG. 1A illustrates a base station (110) and a terminal (120) as some of the nodes utilizing a wireless channel in a wireless communication system. Although FIG. 1 illustrates only one base station, the wireless communication system may further include other base stations identical or similar to the base station (110).

[0020] The base station (110) is a network infrastructure that provides wireless access to the terminal (120). The base station (110) has coverage defined based on the distance at which a signal can be transmitted. In addition to the base station, the base station (110) may be referred to as an 'access point (AP)', 'eNodeB (eNB)', '5th generation node', 'next generation nodeB (gNB)', 'wireless point', 'transmission / reception point (TRP)', or other terms having equivalent technical meanings.

[0021] The terminal (120) is a device used by a user and communicates with the base station (110) via a wireless channel. The link from the base station (110) to the terminal (120) is referred to as a downlink (DL), and the link from the terminal (120) to the base station (110) is referred to as an uplink (UL). In addition, although not shown in FIG. 1, the terminal (120) and another terminal may communicate with each other via a wireless channel. In this case, the link between the terminal (120) and another terminal (device-to-device link, D2D) is referred to as a sidelink, and the sidelink may be used interchangeably with the PC5 interface. In some other embodiments, the terminal (120) may be operated without the involvement of a user. In one embodiment, the terminal (120) is a device that performs machine type communication (MTC) and may not be carried by the user. Additionally, according to one embodiment, the terminal (120) may be an NB (narrowband)-IoT (internet of things) device. The terminal (120) may be referred to as a 'user equipment (UE)', a 'customer premises equipment (CPE)', a 'mobile station', a 'subscriber station', a 'remote terminal', a 'wireless terminal', an electronic device', a 'user device', or other terms having equivalent technical meanings.

[0022] The base station (110) can transmit a signal to the terminal (120). The terminal (120) can receive a signal from the base station (110). The terminal (120) can transmit a signal to the base station (110). The base station (110) can receive a signal from the terminal (120). For example, the base station (110) and the terminal (120) can transmit and receive a wireless signal in a relatively low frequency band (e.g., FR 1 (frequency range 1) of NR). In addition, for example, the base station (110) and the terminal (120) can transmit and receive a wireless signal in a relatively high frequency band (e.g., FR 2 (or, FR 2-1, FR 2-2, FR 2-3), FR 3 of NR), millimeter wave (mmWave) band (e.g., 28 GHz, 30 GHz, 38 GHz, 60 GHz)).

[0023] In the past, in communication systems with relatively large cell radius of base stations, each base station was installed to include the functions of a digital processing unit (or DU (distributed unit)) and an RF (radio frequency) processing unit (or RU (radio unit)). However, in 4G (4 th As higher frequency bands are used in the 5G generation and / or subsequent communication systems (e.g., 5G) and the cell coverage of base stations becomes smaller, the number of base stations to cover a specific area has increased. The installation costs for operators to install base stations have also increased. To minimize the installation costs of base stations, a structure has been proposed in which the base station's DU and RU are separated, one or more RUs are connected to one DU via a wired network, and one or more RUs are geographically distributed to cover a specific area.

[0024] FIG. 1B illustrates examples of network entities of an electronic device. For example, the electronic device may include the base station (110) of FIG. 1A. The base station (110) may be divided into two or more entities via a fronthaul. Unlike a backhaul, a fronthaul refers to an interface between a DU and an RU between a wireless network and a core network. FIG. 1B illustrates an example of a fronthaul structure between a DU and one RU, but this is merely for convenience of explanation and the present disclosure is not limited thereto. In other words, embodiments of the present disclosure may also be applied to a fronthaul structure between one DU and multiple RUs. For example, embodiments of the present disclosure may be applied to a fronthaul structure between one DU and two RUs. Furthermore, embodiments of the present disclosure may also be applied to a fronthaul structure between one DU and three RUs.

[0025] Referring to FIG. 1b, the base station (110) may include a DU (111) and a RU (112). The front hole (115) between the DU (111) and the RU (112) is F x It can be operated through an interface. For the operation of the fronthaul (115), interfaces such as CPRI (common public radio interface), eCPRI (enhanced common public radio interface), and ROE (radio over ethernet) can be used, for example.

[0026] As communication technology advances, mobile data traffic increases, significantly increasing the bandwidth requirements for the fronthaul between the digital unit and the wireless unit. In a deployment such as a centralized / cloud radio access network (C-RAN), the DU (111) performs functions for the PDCP (packet data convergence protocol), RLC (radio link control), MAC (media access control), and PHY (physical), and the RU (112) can be implemented to perform more functions for the PHY layer in addition to the RF (radio frequency) function.

[0027] DU (111) may be responsible for upper layer functions of a wireless network. For example, DU (111) may perform functions of the MAC layer and a part of the PHY layer. Here, a part of the PHY layer refers to functions performed at a higher level among the functions of the PHY layer, and may include, for example, channel encoding (or channel decoding), scrambling (or descrambling), modulation (or demodulation), and layer mapping (or layer demapping). According to an embodiment, if DU (111) complies with the O-RAN standard, it may be referred to as O-DU (O-RAN DU). DU (111) may be expressed as a first network entity for a base station (e.g., gNB) in embodiments of the present disclosure, if necessary.

[0028] The RU (112) may be responsible for lower layer functions of a wireless network. For example, the RU (112) may perform a part of the PHY layer, an RF function. Here, a part of the PHY layer refers to functions of the PHY layer that are performed at a relatively lower level than the DU (111), and may include, for example, iFFT transformation (or FFT transformation), CP insertion (CP removal), and digital beamforming. The RU (112) may be referred to as an 'access unit (AU)', an 'access point (AP)', a 'transmission / reception point (TRP)', a 'remote radio head (RRH)', a 'radio unit (RU)', or other terms having an equivalent technical meaning thereto. According to an embodiment, when the RU (112) complies with the O-RAN standard, it may be referred to as an O-RU (O-RAN RU). RU (112) may be represented as a second network entity for a base station (e.g., gNB) in embodiments of the present disclosure, as needed. In one embodiment, a digital predistortion (DPD) circuit and a processing circuit for the DPD circuit may be included in RU (112) of a base station (110) having a distributed arrangement.

[0029] Fig. 2 illustrates an example of a power supply circuit. The power supply circuit may be configured to supply voltage to electronic devices (e.g., a base station (110), a DU (111), and a RU (112)) constituting a communication system (e.g., a base station system).

[0030] Referring to FIG. 2, the power supply circuit (200) may include a power source (210), a controller (220), a transistor (230), an input capacitor (235), and an output portion (240). The power supply circuit (200) may supply voltage to an electronic device (e.g., a base station (110), a DU (111), a RU (112)) connected to the output portion (240) through the power source (210). In FIG. 2, the power source (210) may refer to an input portion input to the power supply circuit (200). The power supply circuit (200) may obtain power from a power supply (e.g., a direct current (DC) bus power) through the input portion. The electronic device may be connected between a first port (241) and a second port (242) of the output portion (240). For example, the power supply (210) may provide a negative power supply (e.g., -48 V DC (direct current) BUS) for the purpose of improving lifespan and lightning protection. The input capacitor (235) may be arranged in parallel between the first port (241) and the second port (242). The input capacitor (235) may be configured to stably supply power to an electronic device connected to the output portion (240) through charging and discharging. Meanwhile, the normal operating range of the electronic device is generally about -38 V to about -58 V, but a voltage outside the normal operating range may be applied due to a transient state and malfunction.

[0031] The controller (220) can be used to set the operating range of an electronic device (e.g., a base station (110), a DU (111), and a RU (112). The controller (220) can control the transistor (230) so that, when a voltage exceeding the normal operating range (e.g., an overvoltage) is applied, an overvoltage is not applied to the electronic device connected to the output section (240). For example, the controller (220) can be a hot-swap controller. Hot-swap refers to a function that safely cuts off or re-applies the supply of power (210) while the power supply circuit (200) is connected to the electronic device. The controller (220) can protect the electronic device from malfunction by controlling overvoltage (OV) or undervoltage (UV) to the electronic device. According to one embodiment, the controller (220) can perform an overvoltage protection function. The controller (220) may include an overvoltage port (221) and a gate port (223). A control voltage (270) may be applied to the overvoltage port (221). The controller (220) may determine whether to perform an overvoltage protection function by comparing the control voltage (270) with an overvoltage threshold value. For example, the controller (220) may include a comparator configured to compare the control voltage (270) with an overvoltage threshold value according to a protection level. A signal output from the gate port (223) of the controller (220) may vary depending on the output of the comparator. The transistor (230) may be a MOSFET (metal oxide semiconductor field effect transistor). The controller (220) may control the on-off of the gate of the MOSFET through the gate port (223). When a control voltage (270) higher than the overvoltage threshold value is applied, the controller (220) may: The gate of the transistor (230) can be turned off.As the gate of the transistor (230) is turned off, current does not flow through the transistor (230), so power supply to the output section (240) can be cut off.

[0032] When a transient overvoltage or a sustained overvoltage occurs, the overvoltage is directly applied to the inside of the electronic device, so components with higher withstand voltage (e.g., MOSFET, capacitor) may be required for the electronic device. For example, by connecting a delay capacitor to the overvoltage port of the controller, the overvoltage protection function of the controller (220) may not operate for a transient overvoltage for a certain period of time (e.g., about several tens of ms (milliseconds)). Accordingly, the electronic device can maintain operation under the transient overvoltage. However, even if the delay capacitor is connected, the transient overvoltage is directly applied to the inside of the electronic device, so components with sufficient withstand voltage to withstand the transient overvoltage are required for the electronic device. For example, if a voltage exceeding the withstand voltage is applied to the MOSFET even for a short period of time, a burnt defect may occur. The range of the applied voltage (e.g., the voltage supplied to the output section (240)) may vary depending on the business operator's requirements. For example, the transient overvoltage standard included in the NEBS (Network Equipment-Building System) standard may include maintaining normal operation at an applied voltage of 75 V for about 10 ms. The transient overvoltage standard may reflect transient and noise characteristics in addition to the normal operating range. The maximum input voltage specification of an electronic device affects the withstand voltage of components inside the electronic device (e.g., the allowable voltage for components in a power supply device (e.g., power supply circuit (200))). Meanwhile, as components with a higher withstand voltage are applied, not only the product size increases but also the product efficiency may decrease. In the present disclosure, in order to solve or alleviate the above-described problem, a circuit structure for controlling the clamping of transient overvoltage in a negative power system is proposed.

[0033] Figure 3 shows the components of the detection circuit.

[0034] Referring to FIG. 3, the power supply circuit (200) may include a detection circuit (330). The detection circuit (330) is referred to as a detection circuit in terms of detecting whether the voltage applied to the output portion (240) exceeds the clamping voltage, but may be replaced with an overvoltage protection control circuit, a clamping control circuit, a clamping auxiliary circuit, an overvoltage protection circuit, an overvoltage control circuit, an overvoltage detection circuit, a clamping detection circuit, a control circuit, an auxiliary circuit, a detection circuit, or equivalent technical terms.

[0035] The power supply circuit (200) may include a resistor circuit. The resistor circuit may include a plurality of resistors. The plurality of resistors may be used to measure a detection voltage (341). In terms of measuring the detection voltage (341), the plurality of resistors may be referred to as sensing resistors. The plurality of resistors may be arranged in series. The plurality of resistors may be arranged in parallel between a first node between a power source (210) and a first port (241) of an output portion (240) and a second node between a drain of a transistor (230) and a second port (242) of the output portion (240). The plurality of resistors may be arranged in parallel with an input capacitor (235). For example, the plurality of resistors may include a first resistor (311), a second resistor (312), and a third resistor (313). Although three resistors are illustrated in FIG. 3 , embodiments of the present disclosure are not limited thereto. The three resistors are merely an exemplary configuration for explaining voltage distribution, and a power supply circuit including two or four or more resistors may also be understood as an embodiment of the present disclosure.

[0036] The detection circuit (330) may include a comparator circuit (350) and an isolation circuit (360). The comparator circuit (350) may be configured to compare a detection voltage (341) with a reference voltage (342). The comparator circuit (350) may obtain the detection voltage (341). The detection voltage (341) may correspond to a voltage applied between the second resistor (312) and the third resistor (313). The comparator circuit (350) may obtain the reference voltage (342) from a voltage supplied to the output portion (240) (e.g., a voltage of the second port (242)). The comparator circuit (350) may output a signal (356) corresponding to a comparison result between the detection voltage (341) and the reference voltage (342). The comparator circuit (350) may transmit the signal (356) to the isolation circuit (360). For example, the comparator circuit (350) may be configured to generate a first signal when the detection voltage (341) is greater than the reference voltage (342). The comparator circuit (350) may be configured to generate a second signal when the detection voltage (341) is less than or equal to the reference voltage (342). For example, the voltage range of the first signal may be higher than the voltage range of the second signal. The first signal may be a low-level signal or a low signal. The second signal may be a high-level signal or a high signal.

[0037] Comparing the detection voltage (341) and the reference voltage (342) through the comparator circuit (350) may correspond to comparing the voltage applied to the output portion (240) with the clamping voltage. The detection voltage (341) may correspond to at least a portion of the voltage applied to the output portion (240). The detection voltage (341) may correspond to a specified ratio of the voltage applied to the output portion (240). For example, the detection voltage (341) represents the voltage of one region among the resistors arranged in series in the resistor circuit. The specified ratio may represent the ratio of at least one resistance value up to the one region to the total resistance value of the resistors. The reference voltage (342) may correspond to the product of the clamping voltage and the specified ratio. The controller (220) may lower the voltage applied to the output terminal (240) to a predetermined voltage or less for overvoltage protection. The predetermined voltage represents the clamping voltage. In one embodiment, the clamping voltage may be set lower than the allowable voltage of the electronic component connected to the output terminal (240) (e.g., the withstand voltage of the transistor). A reference voltage (342) may be determined based on a specified ratio according to the clamping voltage and the resistance circuit. In one embodiment, the power supply circuit (200) may include a diode (e.g., a Zener diode, diode 431 of FIG. 4)) that provides the reference voltage (342).

[0038] The insulation circuit (360) may generate a control signal (370) in response to a signal (356), which is an output of the comparator circuit (350). For example, the insulation circuit (360) may be configured to generate a control signal (370) having a voltage greater than an overvoltage threshold when the signal (356) is a first signal. The first signal may indicate that the detection voltage (341) is greater than the reference voltage (342). Depending on the voltage magnitude of the first signal, a current may flow within the insulation circuit (360). Due to the above, a control signal (370) of the insulation circuit (360) may be generated. The control signal (370) may be provided to the overvoltage port (221) of the controller (220). The voltage of the control signal (370) may correspond to the control voltage (270). The voltage of the control signal (370) may be greater than the overvoltage threshold of the controller (220). The isolation circuit (360) may be configured to generate the control signal (370) having a voltage greater than the overvoltage threshold in order to activate the overvoltage protection function of the controller (220). For example, the isolation circuit (360) may not generate the control signal (370) having a voltage greater than the overvoltage threshold when the signal (356) is the second signal.

[0039] The second signal may indicate that the detection voltage (341) is less than or equal to the reference voltage (342). Since no current flows inside the insulation circuit (360), the input and output portions of the insulation circuit (360) may be disconnected from each other. Since a separate signal is not provided from the output portion of the insulation circuit (360), a control signal of sufficient size may not be generated. As an implementation example, depending on the connection status of the circuit, a signal of low output may be applied to the overvoltage port (221). However, since the voltage of the signal is lower than the overvoltage threshold value set in the controller (220), the overvoltage protection function of the controller (220) may not be activated.

[0040] Hereinafter, for convenience of explanation, a control signal (370) having a voltage greater than the overvoltage threshold may be referred to as a high signal or a high-level signal, and a signal having a voltage lower than the overvoltage threshold may be referred to as a low signal or a low-level signal. It may be understood that a voltage substantially close to '0' or a signal having a voltage lower than the overvoltage threshold is applied.

[0041] Figures 4a and 4b illustrate examples of a detection circuit (e.g., detection circuit (330)). The same reference numbers may refer to descriptions given for the corresponding reference numbers in other drawings.

[0042] Referring to FIG. 4A, the detection circuit (330) may include a comparator circuit (350) and an isolation circuit (360). The comparator circuit (350) may include an operational amplifier (OP) (e.g., an OP-AMP IC). The negative pin of the comparator circuit (350) may be electrically connected to a terminal between the second resistor (312) and the third resistor (313). A detection voltage (341) may be input to the negative pin of the comparator circuit (350). The positive pin of the comparator circuit (350) may be electrically connected to the second port (242) of the power supply circuit (200) through a diode (431) (e.g., a Zener diode). The first power source (420) may be electrically connected to the positive pin of the comparator circuit (350) through the input resistor (421). For example, the first power source (420) is a supply power source (V CC) may be. The reference voltage (342) may be input to the positive pin of the comparator circuit (350). The comparator circuit (350) may be configured to generate a first signal when the detection voltage (341) is greater than the reference voltage (342). The comparator circuit (350) may be configured to generate a second signal when the detection voltage (341) is less than or equal to the reference voltage (342). For example, the voltage range of the first signal may be higher than the voltage range of the second signal. The first signal may be a low-level signal or a low signal. The second signal may be a high-level signal or a high signal. The signal (356), which is an output of the comparator circuit (350), may be provided to the insulation circuit (360).

[0043] The insulation circuit (360) may include a photo-coupler. To explain the terminal of the photo-coupler, reference may be made to the structure illustrated in FIG. 4B. FIG. 4B shows an example of the insulation circuit. Referring to FIG. 4B, the insulation circuit (360) may include a light-emitting element and a light-receiving element as a photo-coupler. For example, the light-emitting element may include a diode (461) (e.g., a light-emitting diode). The light-receiving element may include a bipolar junction transistor (BJT) (462). The diode (461) may correspond to an input portion of the insulation circuit (360). The diode (461) may include an anode (451) and a cathode (452). The anode (451) of the insulation circuit (360) may be connected to the first power source (420) through a series resistor (422) (or may be referred to as a diode resistor). The cathode (452) of the insulation circuit (360) may be connected to the output of the comparator circuit (350). When the output of the comparator circuit (350) is higher than the voltage applied to the anode (451), a forward current may flow from the anode (451) of the diode (461) to the cathode (452). When the output of the comparator circuit (350) is lower than or equal to the voltage applied to the anode (451), the forward current may not flow.

[0044] Due to the forward current of the diode (461), light can be transmitted to the photodetector. Due to the light, current can flow to the base terminal (453) of the photodetector. The collector (454) can be connected to a second power source (410). For example, the second power source (410) can be connected to a drain supply voltage (V DD) may be. The emitter (455) may be connected to a load resistor (423). The load resistor (423) may be connected between the emitter (455) and a power source (210). Depending on the current of the light-receiving element, current may flow from the collector (454) to the emitter (455). As the current is supplied to the load resistor (423), a control signal (370) may be generated. The voltage of the control signal (370) (e.g., the control voltage (270)) may be applied to the overvoltage port (221) of the controller (220).

[0045] The detection circuit (330) may be configured to transmit a control signal (370) to the overvoltage port (221) for the overvoltage protection function of the controller (220). When the control signal (370) is applied to the overvoltage port (221), the transient overvoltage of the output portion (240) of the power supply circuit (200) may be clamped. In the output portion (240), a detection voltage (341) according to a specified ratio (e.g., a ratio of the third resistor (313) to the first resistor (311) and the second resistor (312)) may be input to the negative pin. If the transient overvoltage is applied, if it is higher than the reference voltage (342) of the positive pin, the comparator circuit (350) may output a low signal. The voltage for triggering clamping (hereinafter, clamping voltage) can be determined based on the ratio of the sensing resistors (e.g., the ratio of the third resistor (313) to the first resistor (311) and the second resistor (312)) and the magnitude of the reference voltage (342). For example, the clamping voltage can be determined as the product of the reference voltage (342) and the ratio of the sensing resistors.

[0046] A control signal (370) may be applied to an overvoltage port (221) of a controller (220). In order to activate the overvoltage protection function of the controller (220), the voltage of the control signal (370) may be greater than an overvoltage threshold. The size of the load resistor (423) may be determined so that the voltage of the control signal (370) is greater than the overvoltage threshold. The product of the size of the load resistor (423) and the collector current may correspond to the voltage of the control signal (370). The collector current may be a forward current (I) flowing in the diode (461). F ) may be a value obtained by multiplying the CTR (current transfer ratio). For example, the minimum value of the current flowing in the collector (454) may be a value obtained by multiplying the forward current by the minimum CTR. While the gate of the transistor (230) is turned off, the power source (210) and the output portion (240) may be electrically separated. Accordingly, the voltage supplied to the output portion (240) may decrease. As the voltage supplied to the output portion (240) decreases, after a certain period of time, the detection voltage (341) may become lower than the reference voltage (342). The detection circuit (330) may operate in the opposite direction, so that the gate of the transistor (230) may be turned on again. While the gate is on, the voltage supplied to the output portion (240) may rise again. By repeating turning on and off the gate during the time when the transient overcharge is applied, the voltage supplied to the output portion (240) may be clamped. In a normal state where the input voltage is maintained at a voltage lower than the clamping voltage, the comparator circuit (350) outputs a second signal, so the isolation circuit (360) may be in a state where the input section (e.g., diode (461)) and the output section (e.g., BJT (462)) are disconnected. Since no forward current flows through the diode (461), no current may flow through the base terminal (453) of the BJT (462). Since the overvoltage protection function of the controller (220) does not operate, the controller (220) can control the gate to continuously operate.

[0047] Figure 5 illustrates another example of a detection circuit (e.g., detection circuit (330)). The detection circuit (330) may include a comparator circuit (550) and an isolation circuit (360). The same reference numbers may indicate descriptions described for the corresponding reference numbers in other drawings.

[0048] Referring to FIG. 5, the detection circuit (330) may include a comparator circuit (550) and an insulation circuit (360). Referring to the circuit structure of FIG. 4A, a comparator circuit (550) may be used instead of the comparator circuit (350). A detection voltage (341) may be applied to a positive pin of the comparator circuit (350). A reference voltage (342) may be applied to a negative pin of the comparator circuit (350). For example, the comparator circuit (550) may be configured to generate a first signal when the detection voltage (341) is greater than the reference voltage (342). The comparator circuit (550) may be configured to generate a second signal when the detection voltage (341) is less than or equal to the reference voltage (342). For example, a voltage range of the first signal may be higher than a voltage range of the second signal. The first signal may be a low-level signal or a low signal. The second signal may be a high-level signal or a high signal. Since the first signal has a signal in a low voltage range, a forward current may flow in the diode (461). In other words, the comparator circuit (550) may generate a signal (356) to cause a forward current to flow in the diode (461) only when the detection voltage (341) is greater than the reference voltage (342).

[0049] The insulation circuit (360) may include a photo-coupler. The insulation circuit (360) may include a light-emitting element and a light-receiving element as a photo-coupler. For example, the light-emitting element may include a diode (461) (e.g., a light-emitting diode). The light-receiving element may include a bipolar junction transistor (BJT) (462). When the output of the comparator circuit (550) is higher than the voltage applied to the anode (451), a forward current may flow from the anode (451) of the diode (461) to the cathode (452). When the output of the comparator circuit (550) is lower than or equal to the voltage applied to the anode (451), the forward current may not flow. Due to the forward current of the diode (461), light may be transmitted to the light-receiving element. Due to the light, a current may flow in the base terminal (453) of the light-receiving element. Depending on the current of the light-receiving element, a current may flow from the collector (454) to the emitter (455). As the current is supplied to the load resistor (423), a control signal (370) may be generated. The voltage of the control signal (370) (e.g., the control voltage (270)) may be applied to the overvoltage port (221) of the controller (220).

[0050] Using the principles illustrated in FIGS. 4A, 4B, and 5, various types of circuits can be configured. Although FIGS. 4A and 5 illustrate an example in which the output of the comparator circuit is connected to the cathode (452) of the diode (461) of the insulation circuit (360), embodiments of the present disclosure are not limited thereto. For another example, the output of the comparator circuit may be connected to the anode (451) of the diode (461). The comparator circuit may be configured to output a high signal having a relatively high voltage when the detection voltage (341) is greater than the reference voltage (342). The comparator circuit may be configured to output a low signal having a relatively low voltage when the detection voltage (341) is less than or equal to the reference voltage (342). The insulation circuit (360) may be configured to output a control signal (370) having a voltage greater than an overvoltage threshold only when the detection voltage (341) is greater than a reference voltage (342). The insulation circuit (360) may be configured not to output a separate control signal (370) or to output a signal lower than the overvoltage threshold when the detection voltage (341) is less than or equal to the reference voltage (342).

[0051] Figures 6a to 6c illustrate examples of overvoltage control using a detection circuit. To explain each waveform, reference may be made to the components of the power supply circuit (200) illustrated in Figures 2, 3, 4a, 4b, and 5.

[0052] Referring to FIG. 6A, a graph (610) represents voltage waveforms. A first waveform (611) may represent a voltage at an overvoltage port (221) of a controller (220). A second waveform (612) may represent a voltage of a power source (210). A third waveform (613) may represent a voltage of an output portion (240). A fourth waveform (614) may represent a current in the power source (210). Even if an excessive overvoltage is applied to the power source (210), the detection circuit (330) may be configured to clamp the voltage applied to the output portion (240) by repeatedly applying a high signal (e.g., a control signal (370) having a voltage greater than an overvoltage threshold of the controller (220)) or a low signal (e.g., a signal having a voltage lower than the overvoltage threshold). Due to the above clamping, the maximum voltage of the third waveform (613) may be smaller than the maximum voltage of the second waveform (612).

[0053] Referring to FIG. 6B, a graph (620) represents voltage waveforms when no load (e.g., an electronic device) is connected to the output portion (240). A first waveform (621) may represent a voltage at an overvoltage port (221) of a controller (220). A second waveform (622) may represent a voltage of a power source (210). A third waveform (623) may represent a voltage of the output portion (240). A fourth waveform (624) may represent a current at the power source (210). The second waveform (622) may have a transient overvoltage of up to 75 V. The transient overvoltage of about 75 V may be maintained for about 10 ms. The third waveform (623) may have a clamping voltage of less than a specified magnitude (e.g., 64 V) due to clamping caused by the operation of the detection circuit (330). For example, the clamping voltage may be determined as the product of the ratios of a reference voltage (e.g., reference voltage (342)) and sensing resistors (e.g., first resistor (311), second resistor (312), and third resistor (313)).

[0054] Referring to FIG. 6c, a graph (630) represents voltage waveforms when a load (e.g., an electronic device) is connected to the output portion (240). The graph (630) more schematically represents the voltage waveforms of the graph (610). A first waveform (631) may represent a voltage at an overvoltage port (221) of a controller (220). A second waveform (632) may represent a voltage of a power source (210). A third waveform (633) may represent a voltage of an output portion (240). A fourth waveform (634) may represent a current at the power source (210). The second waveform (622) may have a transient overvoltage of up to 75 V. A transient overvoltage of about 75 V may be maintained for about 10 ms. The third waveform (623) may have a clamping voltage lower than a specified size (e.g., 64 V) due to clamping caused by the operation of the detection circuit (330). For example, the clamping voltage may be determined as the product of a ratio of a reference voltage (e.g., a reference voltage (342)) and sensing resistors (e.g., a first resistor (311), a second resistor (312), and a third resistor (313)). By clamping at a voltage lower than the withstand voltage (or allowable voltage) defined for the product (e.g., a MOSFET), the overvoltage protection function may operate normally even if a voltage higher than the withstand voltage is momentarily applied.

[0055] Figure 7 illustrates examples of components of an electronic device.

[0056] Referring to FIG. 7, an exemplary functional configuration of an electronic device (710) is illustrated. For example, the electronic device (710) may be a base station (110) or an RU (112). As a non-limiting example, the electronic device (710) may also be a terminal (120). The electronic device (710) may include an antenna unit (711), a filter unit (712), an RF (radio frequency) processing unit (713), and a processor (714).

[0057] The power supply circuit (200) described through FIGS. 2 to 6C can receive power (701) (e.g., -48 V) from a power supply source (700). The power (701) can correspond to the power (210) of the power supply circuit (200). For example, the power (701) can be provided to the electronic device (710) through a communication path shared by a plurality of components in a DC (direct current) bus manner. The power supply circuit (200) for the electronic device (710) can be configured to supply a direct current power (702) from the power (701). For example, a power (701) of about -48 V can be converted into a direct current power (702) of 12 V. A direct current power supply (702) can be applied to components of an electronic device (710) (e.g., DU (111), RU (112), MMU, DU board, RU board). A power supply circuit (200) can be used to supply a direct current power supply (702) to components of an electronic device (710) (e.g., processor (714), power amplifier of RF processing unit (713)) using a power supply (701) of a negative power system.

[0058] The antenna unit (711) may include a plurality of antennas. The antenna performs functions for transmitting and receiving signals via a wireless channel. The antenna may include a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). The antenna may radiate an upconverted signal on a wireless channel or acquire a signal radiated by another device. Each antenna may be referred to as an antenna element or antenna element. According to one embodiment, the antenna unit (711) may include an antenna array in which a plurality of antenna elements form an array. The antenna unit (711) may be electrically connected to the filter unit (712) via RF signal lines. The antenna unit (711) may be mounted on a PCB including a plurality of antenna elements. The PCB may include a plurality of RF signal lines connecting each antenna element to a filter of the filter unit (712). These RF signal lines may be referred to as a feeding network. The antenna unit (711) can provide a received signal to the filter unit (712) or radiate a signal provided from the filter unit (712) into the air.

[0059] The filter unit (712) can perform filtering to transmit a signal of a desired frequency. The filter unit (712) can perform a function to selectively identify a frequency by forming a resonance. The filter unit (712) can include at least one of a band pass filter, a low pass filter, a high pass filter, or a band reject filter. That is, the filter unit (712) can include RF circuits for obtaining a signal of a frequency band for transmission or a frequency band for reception. The filter unit (712) according to various embodiments can electrically connect the antenna unit (711) and the RF processing unit (713).

[0060] The RF processing unit (713) may include a plurality of RF processing circuits. According to one embodiment, the power supply circuit (200) may be configured to supply a DC power (702) to components of the RF processing unit (713) (e.g., a power amplifier, a low-noise amplifier). Each RF processing circuit may be referred to as an RF path, which is a unit of a path through which a signal received through an antenna or a signal radiated through an antenna passes. At least one RF path may be referred to as an RF chain. The RF chain may include a plurality of RF components. The RF components may include an amplifier (power amplifier, PA), a mixer, an oscillator, a digital-to-analog converter (DAC), an analog-to-digital converter (ADC), etc. For example, the RF processing unit (713) may include an up converter that up-converts a baseband digital transmission signal to a transmission frequency, and a DAC that converts the up-converted digital transmission signal to an analog RF transmission signal. The upconverter and the DAC form part of a transmit path. The transmit path may further include a power amplifier or a coupler (or combiner). In addition, for example, the RF processing unit (713) may include an ADC for converting an analog RF reception signal into a digital reception signal and a downconverter for converting a digital reception signal into a baseband digital reception signal. The ADC and the downconverter form part of a receive path. The receive path may further include a low-noise amplifier (LNA) or a coupler (or divider). The RF components of the RF processing unit may be implemented on a PCB. For example, the electronic device (710) may include a structure in which an antenna unit (711), a filter unit (712), and an RF processing unit (713) are stacked in that order.For example, antennas and RF components of the RF processing unit can be implemented on a PCB. For example, filters can be repeatedly connected between PCBs to form multiple layers.

[0061] The RF processing unit (713) may include a plurality of RF processing chains for a plurality of signal paths transmitted to the antenna unit (711) and the filter unit (712). For example, the RF processing unit (713) may be an RFIC. The RFIC may include a plurality of RF processing chains. A signal applied from a baseband may be input to the RFIC. The signal input to the RFIC may be distributed to each antenna element. At this time, for beamforming, an independent phase shift may be applied to each antenna element. Accordingly, the RFIC may include RF processing chains for processing a signal to be transmitted to each antenna element. Each RF processing chain may include one or more RF components for RF signal processing.

[0062] The processor (714) can control the overall operations of the electronic device (710). According to one embodiment, the power supply circuit (200) can be configured to supply direct current power (702) to the processor (714). The processor (714) can include various modules for performing communication. The processor (714) can include at least one processor, such as a modem. The processor (714) can include modules for digital signal processing. For example, the processor (714) can include a modem. When transmitting data, the processor (714) generates complex symbols by encoding and modulating a transmission bit stream. In addition, for example, when receiving data, the processor (714) restores a reception bit stream by demodulating and decoding a baseband signal. The processor (714) can perform functions of a protocol stack required by a communication standard.

[0063] There are two ways to input power to network equipment: negative input and positive input. In the case of the positive input method, a diode (e.g., a clamping diode, a Zener diode) may be added to the gate port of the hot-swap controller. The voltage input to the system power supply may be clamped through the diode. The Zener diode may be configured to maintain a constant voltage even if the current changes. However, in the case of a negative input system, since the potential of the input terminal of the system power supply is different from the source of the transistor (e.g., a MOSFET) and the electronic components, it may be difficult to simply clamp the voltage of the input terminal through the diode. The detection circuit according to embodiments of the present disclosure may be configured to clamp the voltage applied to the output portion (240) by adaptively applying a control signal (370) to the overvoltage port (221) of the controller (220) through the operation of the comparator circuit (350) (or the comparator circuit (550)) and the isolation circuit (360).

[0064] The power supply circuit (200) according to embodiments of the present disclosure can clamp the voltage applied to the output portion (240) through the detection circuit (330). Generally, when selecting components, components with a high withstand voltage to withstand transient overvoltage must be applied, but through the clamping of the present disclosure, components with a relatively low withstand voltage can be used. For example, in a circuit structure where a transient overvoltage is applied as in the past, about 16 150 uF (micro farad) components with a withstand voltage of about 80 V must be applied. However, when the structure of the power supply circuit (200) according to embodiments of the present disclosure is applied, 240 uF components with a withstand voltage of about 63 V can be applied. In a circuit design requiring a capacitance of about 2400 uF, the number of required capacitors can be reduced from 16 to 10. As the number of capacitors is reduced, the size of electronic devices (e.g., base station (110), DU (111), RU (112)) can be reduced. Since transient overvoltage is clamped and applied to the product, the operation of the electronic device can be maintained while the effect of transient overvoltage is reduced. Since components with low withstand voltage can be applied, product size reduction and cost reduction are possible. For example, miniaturization can be achieved by reducing the number of capacitors within the circuit, and communication performance can be improved due to the characteristics of network equipment in which a large number of RF components are mounted.

[0065] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0066] In embodiments, a network power supply circuit (200) is provided. The network power supply circuit (200) may include a power source (210), a transistor (230) disposed between the power source (210) and an input terminal (240), a controller (220) for controlling a gate of the transistor (230), a resistance circuit disposed in parallel to the input terminal, and a clamping control circuit (330). The detection circuit (330) may include a comparator circuit (350) configured to output a first signal or a second signal according to a comparison result between a detection voltage (341) obtained through the resistance circuit and a reference voltage (342), and an insulation circuit (360) configured to provide a control signal to an over-voltage (OV) port of the controller (220) in response to the first signal, which is an output of the comparator circuit (350). The controller (220) may be configured to turn off the gate of the transistor (230) according to the control signal applied to the overvoltage port (221).

[0067] According to one embodiment, the comparator circuit (350) may be configured to output the first signal when the detection voltage (341) is greater than the reference voltage (342). The comparator circuit (350) may be configured to output the second signal when the detection voltage (341) is less than or equal to the reference voltage (342). The voltage range of the first signal may be lower than the voltage range of the second signal.

[0068] According to one embodiment, the insulation circuit (360) may be configured to generate the control signal through the diode (461) of the insulation circuit (360) in response to the first signal and supply the control signal to the overvoltage port (221) of the controller (220). The voltage of the control signal may be higher than an overvoltage threshold value set in the controller (220) for overvoltage protection.

[0069] According to one embodiment, the detection circuit (330) may further include a load resistor disposed between the overvoltage port (221) of the controller (220) and the power supply (210). The voltage of the control signal may be determined based on the size of the load resistor.

[0070] According to one embodiment, the insulation circuit (360) may include the diode (461) and the bipolar junction transistor (BJT) (462). A forward current from the anode of the diode (461) to the cathode of the diode (461) may cause a collector current to flow from the collector of the BJT (462) to the emitter of the BJT (462). The product of the magnitude of the load resistance and the collector current may be greater than the overvoltage threshold of the controller (220).

[0071] According to one embodiment, the output terminal of the comparator circuit (350) may be electrically connected to the cathode of the diode (461).

[0072] According to one embodiment, the detection circuit (330) may further include a diode (461) resistor connected between the anode of the diode (461) and the first power source. The forward current may be determined based on the diode (461) resistance and the first power source.

[0073] According to one embodiment, the collector of the BJT (462) may be connected to a second power source. The emitter of the BJT (462) may be connected to the load resistor and the overvoltage port (221) of the controller (220), respectively.

[0074] According to one embodiment, the insulation circuit (360) may include a diode (461) arranged to prevent current from passing through in response to the second signal, which is an output of the comparator circuit (350).

[0075] According to one embodiment, the controller (220) may be configured to turn off the gate when the voltage of the signal applied to the overvoltage port (221) is higher than the overvoltage threshold value set in the controller (220). The controller (220) may be configured to turn on the gate when the voltage of the signal applied to the overvoltage port (221) is lower than or equal to the overvoltage threshold value set in the controller (220). According to one embodiment, the resistance circuit may include resistors arranged in series. The resistors may be arranged in parallel between a first node between the power source (210) and a first port of the input terminal (240) and a second node between a drain of the transistor (230) and a second port of the input terminal. The detection voltage (341) may be obtained from at least one of the resistors and supplied to a negative port of the comparator circuit (350). The above reference voltage (342) can be supplied to the positive port of the comparator circuit (350).

[0076] In one embodiment, the power supply (210) may be provided via a -48V (voltage) DC (direct current) bus system. The controller (220) may include a hot-swap controller. In one embodiment, the network power supply circuit (200) may further include an input capacitor connected in parallel to the input terminal. The overvoltage port (221) of the controller (220) may be connected to the isolation circuit (360) without a capacitor.

[0077] In embodiments, an electronic device is provided. The electronic device may include a processor, a plurality of radio frequency (RF) processing circuits, a plurality of antennas, and power supply circuits (200) configured to provide power to at least one of the processor or the plurality of RF processing circuits. Each power supply circuit (200) among the power supply circuits (200) may include a power source, a transistor (230) disposed between the power source (210) and an input terminal (240), a controller (220) for controlling a gate of the transistor (230), a resistor circuit disposed in parallel with the input terminal, and a clamping control circuit (330). The detection circuit (330) may include a comparator circuit (350) configured to output a first signal or a second signal according to a comparison result between a detection voltage (341) obtained through the resistance circuit and a reference voltage (342), and an insulation circuit (360) configured to provide a control signal to an over-voltage (OV) port of the controller (220) in response to the first signal, which is an output of the comparator circuit (350). The controller (220) may be configured to turn off the gate of the transistor (230) according to the control signal applied to the over-voltage port (221).

[0078] According to one embodiment, the comparator circuit (350) may be configured to output the first signal when the detection voltage (341) is greater than the reference voltage (342). The comparator circuit (350) may be configured to output the second signal when the detection voltage (341) is less than or equal to the reference voltage (342). The voltage range of the first signal may be lower than the voltage range of the second signal.

[0079] According to one embodiment, the insulation circuit (360) may be configured to generate a control signal through a diode (461) of the insulation circuit (360) in response to the first signal and supply the control signal to the overvoltage port (221). The voltage of the control signal may be higher than an overvoltage threshold value set in the controller (220) for overvoltage protection.

[0080] According to one embodiment, the controller (220) may be configured to turn off the gate when a signal applied to the overvoltage port (221) is higher than an overvoltage threshold value set in the controller (220), and to turn on the gate when a signal applied to the overvoltage port (221) is lower than or equal to the overvoltage threshold value set in the controller (220).

[0081] According to one embodiment, each of the insulation circuits (360) of the power supply circuits (200) may include a diode (461) arranged to prevent current from passing through the second signal, which is an output of the comparator circuit (350).

[0082] According to one embodiment, a capacitor may not be connected to the overvoltage port (221) of the controller (220) of each of the power supply circuits (200).

[0083] In one embodiment, the power supply (210) may be provided via a -48V (voltage) direct current (DC) bus system. The controller (220) may include a hot-swap controller. The power supply circuits (200) may be used to supply DC power to power amplifiers among the plurality of RF processing circuits.

[0084] In embodiments, a power supply circuit is provided. The power supply circuit may include an input portion for obtaining power from a power supply, an output portion for providing power to an electronic component, a transistor disposed between the input portion and the output portion, a controller for providing an over-voltage (OV) protection function by selectively turning on or off a gate of the transistor according to a result of comparing a voltage of a control signal with a threshold configured for an OV protection function, a resistor circuit disposed in parallel with the output portion, and a detection circuit connected to the resistor circuit for obtaining at least a portion of a voltage applied to the output portion. The detection circuit may provide the control signal having a voltage greater than the threshold value to the controller when the voltage applied to the output portion is higher than the clamping voltage. The detection circuit may be configured to provide the control signal having a voltage lower than or equal to the threshold value to the controller when the voltage applied to the output portion is lower than or equal to the clamping voltage. The above clamping voltage may be lower than the allowable voltage of the electronic component.

[0085] According to one embodiment, the detection circuit may include a comparator circuit configured to obtain a detection voltage corresponding to a specified ratio of a voltage applied to the output portion through the resistance circuit, output the first signal when the detection voltage is higher than a reference voltage, and output the second signal when the detection voltage is lower than or equal to the reference voltage.

[0086] In one embodiment, the detection circuit may include an isolation circuit configured to, in response to the first signal, generate the control signal having a voltage greater than the threshold value, and in response to the second signal, generate the control signal having a voltage less than or equal to the threshold value, and provide the control signal to an overvoltage port of the controller.

[0087] In one embodiment, the insulation circuit may include a load resistor disposed between the overvoltage port of the controller and the input portion. The voltage of the control signal may be determined based on the magnitude of the load resistor.

[0088] In one embodiment, the insulation circuit may include a diode and a bipolar junction transistor (BJT). A forward current from an anode of the diode to a cathode of the diode may cause a collector current to flow from a collector of the BJT to an emitter of the BJT. The magnitude of the load resistance and the magnitude of the collector current may provide the control signal having a voltage greater than the threshold value.

[0089] In one embodiment, the cathode of the diode may be electrically connected to the output terminal of the comparator circuit. The anode of the diode may be electrically connected to a first power source providing a collector voltage. The magnitude of the forward current may be determined based on the difference between the voltage of the first signal of the comparator circuit and the collector voltage.

[0090] In one embodiment, the collector of the BJT may be connected to a second power source that provides a device voltage. The emitter of the BJT may be connected to the load resistor and the overvoltage port of the controller, respectively.

[0091] In one embodiment, the resistor circuit may include resistors arranged in series. The resistors may be arranged in parallel between a first node between the power supply and a first port of the output portion and a second node between a drain of the transistor and a second port of the output portion.

[0092] In one embodiment, the power may be provided via a -48V (voltage) direct current (DC) bus system. The controller may include a hot-swap controller.

[0093] In one embodiment, the power supply circuit may further include an input capacitor connected in parallel with the output portion. The overvoltage port of the controller may be connected to the input portion without a capacitor.

[0094] In embodiments, an electronic device is provided. The electronic device may include a processor and a power supply circuit configured to provide power to the processor. The power supply circuit may include an input portion for obtaining power from a power supply, an output portion for providing power to an electronic component, a transistor disposed between the input portion and the output portion, a controller for providing an over-voltage (OV) protection function by selectively turning on or off a gate of the transistor based on a comparison result between a voltage of a control signal and a threshold configured for an OV protection function, a resistor circuit disposed in parallel with the output portion, and a detection circuit connected to the resistor circuit for obtaining at least a portion of a voltage applied to the output portion. The detection circuit may provide the control signal having a voltage greater than the threshold to the controller when the voltage applied to the output portion is higher than a clamping voltage. The above detection circuit may be configured to provide the controller with the control signal having a voltage lower than or equal to the threshold value when the voltage applied to the output portion is lower than or equal to the clamping voltage. The clamping voltage may be lower than or equal to the allowable voltage of the electronic component.

[0095] According to one embodiment, the detection circuit may include a comparator circuit configured to obtain a detection voltage corresponding to a specified ratio of a voltage applied to the output portion through the resistance circuit, output the first signal when the detection voltage is higher than a reference voltage, and output the second signal when the detection voltage is lower than or equal to the reference voltage.

[0096] In one embodiment, the detection circuit may include an isolation circuit configured to, in response to the first signal, generate the control signal having a voltage greater than the threshold value, and in response to the second signal, generate the control signal having a voltage less than or equal to the threshold value, and provide the control signal to an overvoltage port of the controller.

[0097] In one embodiment, the insulation circuit may include a load resistor disposed between the overvoltage port of the controller and the input portion. The voltage of the control signal may be determined based on the magnitude of the load resistor.

[0098] In one embodiment, the insulation circuit may include a diode and a bipolar junction transistor (BJT). A forward current from an anode of the diode to a cathode of the diode may cause a collector current to flow from a collector of the BJT to an emitter of the BJT. The magnitude of the load resistance and the magnitude of the collector current may provide the control signal having a voltage greater than the threshold value.

[0099] In one embodiment, the cathode of the diode may be electrically connected to the output terminal of the comparator circuit. The anode of the diode may be electrically connected to a first power source providing a collector voltage. The magnitude of the forward current may be determined based on the difference between the voltage of the first signal of the comparator circuit and the collector voltage.

[0100] In one embodiment, the collector of the BJT may be connected to a second power source that provides a device voltage. The emitter of the BJT may be connected to the load resistor and the overvoltage port of the controller, respectively.

[0101] In one embodiment, the resistor circuit may include resistors arranged in series. The resistors may be arranged in parallel between a first node between the power supply and a first port of the output portion and a second node between a drain of the transistor and a second port of the output portion.

[0102] In one embodiment, the power may be provided via a -48V (voltage) direct current (DC) bus system. The controller may include a hot-swap controller.

[0103] In one embodiment, the power supply circuit may include an input capacitor connected in parallel with the output portion. The overvoltage port of the controller may be connected to the input portion without a capacitor.

[0104] For one or more embodiments, at least one of the components described in one or more of the preceding drawings may be configured to perform one or more operations, techniques, processes, and / or methods as described herein. For example, a processor (e.g., a baseband processor) described herein with respect to one or more of the preceding drawings may be configured to operate according to one or more examples described herein. For another example, circuitry associated with a user equipment (UE), a base station, a network element, and the like, as described above with respect to one or more of the preceding drawings, may be configured to operate according to one or more examples described herein.

[0105] Any of the embodiments described above may be combined with any other embodiment (or combination of embodiments) unless explicitly stated otherwise. The foregoing description of one or more implementations provides examples and descriptions, but is not intended to be exhaustive or limit the scope of the embodiments to the precise forms disclosed. Modifications and variations are possible in light of the above teachings or may be learned from practicing various embodiments.

[0106] The methods according to the embodiments described in the claims or specification of the present disclosure may be implemented in the form of hardware, software, or a combination of hardware and software.

[0107] When implemented in software, a computer-readable storage medium storing one or more programs (software modules) may be provided. The one or more programs stored in the computer-readable storage medium are configured for execution by one or more processors in an electronic device. The one or more programs include instructions that cause the electronic device to execute methods according to embodiments described in the claims or specifications of the present disclosure. The one or more programs may be provided as included in a computer program product. The computer program product may be traded between sellers and buyers as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read only memory (CD-ROM)) or an application store (e.g., Play Store). 쪠) or directly between two user devices (e.g., smart phones), online distribution (e.g., downloading or uploading). In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0108] These programs (software modules, software) may be stored in random access memory, non-volatile memory including flash memory, read only memory (ROM), electrically erasable programmable read only memory (EEPROM), magnetic disc storage devices, compact disc-ROM (CD-ROM), digital versatile discs (DVDs) or other forms of optical storage devices, magnetic cassettes, or may be stored in memories formed by a combination of some or all of these. In addition, each configuration memory may include multiple copies.

[0109] Additionally, the program may be stored on an attachable storage device that is accessible via a communication network, such as the Internet, an intranet, a local area network (LAN), a wide area network (WAN), a storage area network (SAN), or a combination thereof. Such a storage device may be connected to a device implementing an embodiment of the present disclosure via an external port. Additionally, a separate storage device on the communication network may be connected to a device implementing an embodiment of the present disclosure.

[0110] In the specific embodiments of the present disclosure described above, components included in the disclosure are expressed singularly or plurally, depending on the specific embodiment presented. However, the singular or plural expressions are selected to suit the presented situation for convenience of explanation, and the present disclosure is not limited to singular or plural components. Components expressed in plural may be composed of singular elements, or components expressed in singular may be composed of plural elements.

[0111] According to embodiments, one or more of the 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., modules or programs) 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 embodiments, 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.

[0112] Meanwhile, although the detailed description of the present disclosure has described specific embodiments, it is obvious that various modifications are possible within the scope of the present disclosure.

Claims

1. In the power supply circuit, Input section for obtaining power from a power supply; Output section for providing power to electronic components; A transistor positioned between the input portion and the output portion; A controller for providing an OV protection function by selectively turning on or off the gate of the transistor based on a comparison result with a threshold value configured for voltage and over-voltage (OV) protection of a control signal; A resistor circuit arranged in parallel with the above output section; and A detection circuit connected to said resistance circuit to obtain at least a portion of the voltage applied to said output portion, The above detection circuit: When the voltage applied to the above output portion is higher than the clamping voltage, the control signal having a voltage greater than the threshold value is provided to the controller, When the voltage applied to the output portion is lower than or equal to the clamping voltage, the control signal having a voltage lower than or equal to the threshold value is provided to the controller, The above clamping voltage is less than or equal to the allowable voltage of the electronic component. Power supply circuit.

2. In claim 1, The above detection circuit Obtain a detection voltage corresponding to a specified ratio of the voltage applied to the output section through the above resistance circuit, If the above detection voltage is higher than the reference voltage, the first signal is output, A comparator circuit configured to output the second signal when the detection voltage is lower than or equal to the reference voltage, Power supply circuit.

3. In claim 2, The above detection circuit, In response to the first signal, generating the control signal having a voltage greater than the threshold value, In response to the second signal, generating the control signal having a voltage lower than or equal to the threshold value, An isolation circuit configured to provide said control signal to an overvoltage port of said controller, Power supply circuit.

4. In claim 3, The above insulation circuit includes a load resistor arranged between the overvoltage port of the controller and the input portion, The voltage of the above control signal is determined based on the size of the load resistance. Power supply circuit.

5. In claim 4, The above insulation circuit includes a diode and a BJT (bipolar junction transistor), The forward current from the anode of the diode to the cathode of the diode causes a collector current to flow from the collector of the BJT to the emitter of the BJT, The size of the load resistance and the size of the collector current provide the control signal having a voltage greater than the threshold value. Power supply circuit.

6. In claim 5, The cathode of the above diode is electrically connected to the output terminal of the above comparator circuit, The anode of the above diode is electrically connected to a first power source providing a collector voltage, The magnitude of the forward current is determined based on the difference between the voltage of the first signal of the comparator circuit and the collector voltage. Power supply circuit.

7. In claim 6, The collector of the above BJT is connected to a second power supply that provides the device voltage, The emitter of the above BJT is respectively connected to the load resistor and the overvoltage port of the controller. Power supply circuit.

8. In claim 1, The above resistance circuit includes resistors arranged in series, The above resistors are arranged in parallel between a first node between the power supply and the first port of the output portion and a second node between the drain of the transistor and the second port of the output portion. Power supply circuit.

9. In claim 1, The above power is provided via a -48V(voltage) DC(direct current) bus system, The above controller comprises a hot-swap controller, Power supply circuit.

10. In claim 1, Further comprising an input capacitor connected in parallel to the above output section, The above overvoltage port of the above controller is connected to the input section without a capacitor, Power supply circuit.

11. In electronic devices, processor; and A power supply circuit configured to provide power to the processor, The above power supply circuit, Input section for obtaining power from a power supply; Output section for providing power to electronic components; A transistor positioned between the input portion and the output portion; A controller for providing an OV protection function by selectively turning on or off the gate of the transistor based on a comparison result with a threshold value configured for voltage and over-voltage (OV) protection of a control signal; A resistor circuit arranged in parallel with the above output section; and A detection circuit connected to said resistance circuit to obtain at least a portion of the voltage applied to said output portion, The above detection circuit: When the voltage applied to the above output portion is higher than the clamping voltage, the control signal having a voltage greater than the threshold value is provided to the controller, When the voltage applied to the output portion is lower than or equal to the clamping voltage, the control signal having a voltage lower than or equal to the threshold value is provided to the controller, The above clamping voltage is less than or equal to the allowable voltage of the electronic component. Electronic devices.

12. In claim 11, the detection circuit: Obtain a detection voltage corresponding to a specified ratio of the voltage applied to the output section through the above resistance circuit, If the above detection voltage is higher than the reference voltage, the first signal is output, A comparator circuit configured to output the second signal when the detection voltage is lower than or equal to the reference voltage, Electronic devices.

13. In claim 12, the detection circuit, In response to the first signal, generating the control signal having a voltage greater than the threshold value, In response to the second signal, generating the control signal having a voltage lower than or equal to the threshold value, An isolation circuit configured to provide said control signal to an overvoltage port of said controller, Electronic devices.

14. In claim 13, The above insulation circuit includes a load resistor arranged between the overvoltage port of the controller and the input portion, The voltage of the above control signal is determined based on the size of the load resistance. Electronic devices.

15. In claim 14, The above insulation circuit includes a diode and a BJT (bipolar junction transistor), The forward current from the anode of the diode to the cathode of the diode causes a collector current to flow from the collector of the BJT to the emitter of the BJT, The size of the load resistance and the size of the collector current provide the control signal having a voltage greater than the threshold value. Electronic devices.

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