Abstract: A measuring device is provided. The measuring device includes a sensor unit configured to detect a measurement signal, upstream measuring device electronics that include a signal processing circuit and an input interface, and a power limitation circuit arranged to limit the power supplied by the external power supply at the input interface.

Abstract: A method for operating an electronic switch is described hereinafter. According to one exemplary embodiment, the method (for an electronic switch in the switched on state) comprises detecting whether there is an undervoltage condition at a supply voltage node and providing an undervoltage signal which indicates an undervoltage condition. The method further comprises switching off the electronic switch if the undervoltage signal indicates an undervoltage condition and switching (back) on the electronic switch if the undervoltage signal no longer indicates an undervoltage condition. If the undervoltage signal indicates an undervoltage condition during a switch-on process of the electronic switch, the electronic switch is switched off again and switching back on is prevented for a defined period of time, irrespective of the undervoltage signal. Moreover, a corresponding circuit is described.

Abstract: Provided are embodiments for a system for performing input power detection. The system includes a first input for a first power source, a second input for a second power source, and a controller that is operably coupled to the first power source and the second power source. The system also includes a first path connecting a first circuit to the first power supply, wherein the first path comprises a first field effect transistor (FET) that is operated to inhibit leakage current flow to the first circuit, and a second path connecting a second circuit to the second power supply, wherein the second path comprises a second FET that is operated to inhibit leakage current flow to the second circuit. Also provided are embodiments for a method for performing input power detection.

Abstract: Based on a first signal, a first voltage output circuit outputs a first output voltage which is based on a first voltage or does not output the first output voltage. Based on a second signal, a second voltage output circuit outputs a second output voltage which is based on a second voltage or does not output the second output voltage. When a level of the first voltage is lower than a reference level, a voltage detector circuit outputs the first signal such that the first voltage output circuit does not output the first output voltage and outputs the second signal such that the second voltage output circuit outputs the second output voltage. The second voltage output circuit outputs the second output voltage such that the second output voltage has a level of the first output voltage when the level of the first voltage is the reference level.

Abstract: A battery management system includes a microcontroller unit which transmits and receives communications information through a communications input/output terminal, a fault generator unit which generates fault information and transmits the fault information through a fault information output terminal, and a battery cell monitoring unit which is coupled to the communications input/output terminal and the fault information output terminal and diagnoses an operation of internal function based on the fault information transmitted from the fault generator unit and outputs an internal diagnosis result value to the microcontroller unit.

Abstract: A system and method for redundant electric power for an electric aircraft is provided. The system includes a plurality of battery packs which includes at least a first pack monitor unit and at least a second pack monitor unit configured to detect a first battery pack datum and a second battery pack datum and transmit the pair of battery pack datum to a controller. Each battery pack. The system further includes a contactor coupled to the electric aircraft, a plurality of loads communicatively coupled to each battery pack of the plurality of battery packs, and a controller, wherein the controller is designed and configured to receive the first battery pack and the second battery pack datum, compare the first battery pack datum to the second battery pack datum as a function of a differential threshold, and generate an alert datum as a function of the comparison.

Abstract: A display device includes a display panel including a gate line, a data line, a gate driver outputting a gate signal to the gate line, a data driver outputting a data voltage to the data line and a power voltage generator. The power voltage generator generates a gate-on voltage, a gate-off voltage, and a gate clock signal toggled between the gate-on voltage and the gate-off voltage, detects a current level of a gate clock current, cuts off power of the display device when a count of the gate clock current higher than or equal to a first current level is greater than or equal to a reference count, and cuts off the power of the display device when the gate clock current is higher than or equal to a second current level higher than the first current level in an initial frame after the display device is turned on.

Abstract: A calibration device includes a signal generator and a processor. The signal generator is configured to provide an input signal to a filter circuit, wherein the filter circuit has a real time constant and is configured to receive the input signal to output an output signal. The processor is configured to calculate a real gain according to the output signal and the input signal, compare the real gain with a target gain to obtain a comparison result and determine whether to adjust the real time constant of the filter circuit according to the comparison result. The present disclosure also provides a calibration method.

Abstract: Systems and methods are provided to implement power supply units (PSUs) that are capable of operating on input power having different types of input voltage waveforms, including, but not limited to, pure sinusoidal waveforms, non-pure sinusoidal waveforms, and non-sinusoidal waveforms. Such a PSU may operate to continue supplying DC output power to a system load as long as the PSU is powered by any one of a variety of such different input power types, while at the same time also effectively monitoring for presence of input power provided to the PSU and shutting down the PSU in event of absence or termination of the input power to the PSU. Such a PSU may also automatically identify and adapt to changes between different types of input power while at the same time continuing to supply DC output power to a system load in an uninterrupted manner for as long as some type of input power is being provided to the PSU.

Abstract: A chip programming voltage detection circuit and a chip programming voltage detection method are disclosed. The chip programming voltage detection circuit comprises a detection subcircuit and a warning subcircuit. The detection subcircuit detects a voltage at a programming voltage output pin, and outputs a detection signal based on the voltage at the programming voltage output pin. The warning subcircuit is connected to a detection output terminal of the detection subcircuit, and is operated to issue a warning alarm in a case where the detection signal indicates that the voltage at the programming voltage output pin does not reach a voltage required for an IC chip programming.

Abstract: An article of apparel, a system, and methods include a structural material configured to enable the article of footwear to the worn on a body. A wireless transmission circuit is included and a piezoelectric generator is positioned with respect to the structural material in a configuration to be flexed to induce a voltage signal output. A voltage sensor is configured to sense the voltage profile and output a sensor signal indicative of the voltage profile. An electronic data storage, coupled to the voltage sensor, is configured to store voltage profile information based on the sensor data. A comparator, coupled to the electronic data storage, is configured to identify a change in the voltage profile information over time. The wireless transmission circuit is configured to transmit data indicative of a physical status of the article of footwear based on the change in the voltage profile information over time.

Abstract: Disclosed is a battery pack, including: at least one battery module which includes a plurality of battery cells and is connected between a first terminal and a second terminal; a relay connected between the first terminal and a third terminal; and a battery management system (BMS) which is connected to the first to third terminals, and generates a charge control signal controlling a charge operation of a charger connected to the third terminal based on battery detection information obtained by detecting the plurality of battery cells and the at least one battery module.

Abstract: A power supply assembly including a load supply converter system and energy saving transfer route both connected electrically to a load connection. The energy saving transfer route bypasses the load supply converter system, and includes a bypass switch system having a first bypass switch and second bypass switch connected in series. A control system of the power supply assembly is adapted to provide a system diagnostic operation including providing a diagnostic state for the bypass switch system by controlling the first bypass switch into a non-conducting state, and controlling the second bypass switch into a conducting state, generating a diagnostic voltage in an output of the load supply converter system, and detecting a short circuit incident if an electric current flowing through the bypass switch system exceeds a predetermined short circuit threshold value.

Abstract: A multiple power supply system includes first and second power supply units. The first power supply unit provides a main output voltage while in a normal mode of operation. The first power supply unit includes a first bulk capacitor, and first standby power circuitry. The first standby power circuitry provides a standby voltage while the first power supply unit is in the normal mode of operation. The second power supply unit provides the main output voltage while in the normal mode of operation. The first power supply unit includes a second bulk capacitor, and second standby power circuitry. The second standby power circuitry provides the standby voltage while the first power supply unit is in the normal mode of operation, and enables reverse charging of the second bulk capacitor by the first power supply unit while the second power supply unit is in a reverse charging mode of operation.

Abstract: an overvoltage protector for protecting a device to be protected, having a first terminal and a second terminal. A number of strings are connected in parallel to one another between the first terminal and the second terminal, each string having a resistor, and at least one of the strings comprising a switching element that is connected in series to the resistor of the string. A circuit having an overvoltage protector, a use of an overvoltage protector, and a method for operating an overvoltage protector is also provided.

Abstract: A protection circuit is provided. A control circuit receives an input voltage. In a case that the input voltage is lower than a negative threshold voltage, the control circuit outputs a first control voltage to a surge bleeder circuit through a first output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a first bleeder current. In a case that the input voltage is higher than a positive threshold voltage, the control circuit outputs a second control voltage to the surge bleeder circuit through a second output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a second bleeder current.

Abstract: The present disclosure provides a method and device for overvoltage protection. Specifically, the present disclosure provides an overvoltage protection device which provides a feedback loop for electronic components such as amplifiers and digital to analog converters which require feedback. The overvoltage protection device also includes overvoltage switches in both the signal and feedback channels, which may be opened by a fault detector in the event of an overvoltage. The device also includes an overvoltage feedback channel coupled between the signal and feedback channels, and which also includes a switch which may be closed in the event of an overvoltage event. As such, the overvoltage device provides a closed loop feedback channel during an overvoltage event.

Abstract: Using various techniques, each transistor in a DC-DC converter can have a corresponding voltage detector that can compare a difference of a first voltage at a first terminal of the transistor and a second voltage at a second terminal of the transistor to a threshold voltage. Then, based on at least one comparison, a controller can detect an open circuit or a short circuit in one or more of the transistors regardless of the direction of the load current in the DC-DC converter.

Abstract: A computer-implemented method according to one embodiment includes managing a cache in a tiered data storage system. The cache is configured to be powered by a temporary power source during a power loss event. The managing includes determining an amount of time that the temporary power source is capable of powering the cache before the temporary power source is depleted, and maintaining a dynamic cache size. The maintaining includes dynamically selecting the cache size based on the amount of time that the temporary power source is capable of powering the cache before the temporary power source is depleted, and based on a latency of destaging extents of data in the cache.

Abstract: Provided is a charge/discharge control circuit for controlling charging and discharging of a secondary cell. The charge/discharge control circuit includes a positive power supply terminal and a negative power supply terminal configured to monitor a voltage of the secondary cell, a charge control signal output terminal from which a charge control signal is output, the charge control signal controlling stopping and allowing charging of the secondary cell, a discharge control signal output terminal, an overcurrent detection terminal, an overcurrent cancel terminal, an external voltage input terminal provided separately from the overcurrent cancel terminal, a discharge overcurrent detection circuit connected to the overcurrent detection terminal, to which a discharge overcurrent detection voltage is set, and a discharge overcurrent cancel circuit connected to the overcurrent cancel terminal, to which a discharge overcurrent cancel voltage is set.

Abstract: A protective device comprises an input, an output, a first power switch, a second power switch and a drive unit. The first and second power switches are electrically connected in parallel with one another between the input and the output. The first power switch is configured to conduct a first forward current in a conducting state and to limit said first forward current in a current-limiting state. The second power switch is configured to conduct a second forward current in a conducting state and to interrupt said second forward current in an interrupting state. The second power switch comprises a lower on resistance than the first power switch. The switch arrangement is configured, for limiting the current flowing between the input and the output, to interrupt the second forward current with the second power switch and to limit the first forward current with the first power switch.

Abstract: A computer program product and DC-to-DC converter comprising, an electronic switching device, an inductor coupled to the electronic switching device, a capacitor coupled to the inductor wherein the inductor and capacitor are chosen such that the resistance of the load line is greater than a gain minus the equivalent series resistance. A transient controller is communicatively coupled to the electronic switching device, wherein the transient controller has adaptive voltage positioning and wherein the transient controller sends a signal configured to initiate discharging the capacitor during a transient event.

Abstract: A disclosed under-voltage lockout (UVLO) circuit includes an automatic UVLO threshold configuration. The UVLO circuit may include an over-voltage protection circuit that receives power from a power source, a peak detector that detects a peak voltage output for the power source, a voltage threshold generator that sets a UVLO threshold based on the peak voltage output, and a comparator that compares an instantaneous voltage with the UVLO threshold and configures an operating mode of a device based on the comparison.

Abstract: A voltage detecting apparatus includes: a voltage detecting unit configured to detect a voltage of a battery supplying power to a load; a discharge circuit configured to discharge the battery; a protection circuit disposed between the voltage detecting unit and the battery and between the discharge circuit and the battery; and a determination unit configured to estimate an internal resistance of the protection circuit on the basis of a first voltage detected by the voltage detecting unit when the discharge circuit is in a non-operating state and a second voltage detected by the voltage detecting unit when the discharge circuit is in an operating state and determine a half-cut state of the protection circuit on the basis of a result of the estimation.

Abstract: A thermostat with voltage and current sensing capability is coupled directly to an HVAC unit and provides low latency failure detection and control using an on-board CPU. The thermostat can be configured to detect failure modes using current and voltage sensing and to make autonomous decisions to control the HVAC in response to such measurements.

Abstract: Embodiments of the present disclosure include an apparatus. The apparatus includes a flash memory with a device threshold voltage for an on/off state, a sense circuit, a decoupling capacitor, and a bleeder circuit. The sense circuit is configured to sense a voltage level of a voltage supply line. The bleeder circuit is configured to bleed a remaining charge available on the decoupling capacitor. The sense circuit is configured to determine a state of the flash memory based on the voltage level of the voltage supply line. The bleeder circuit is configured to bleed the decoupling capacitor in an off state and to preserve the remaining charge available in an on state.

Abstract: A conversion circuit includes a main device including a first terminal, a second terminal and a control terminal, and a voltage control switching circuit including a first terminal configured to receive an first driving signal, a second terminal coupled to the control terminal of the main device and configured to transmit a second driving signal to drive the main device, and a reference terminal coupled to the second terminal of the main device. A current passing through the voltage control switching device is controlled in response to a voltage level of the reference terminal.

Abstract: Implementations described and claimed herein provide systems and methods for supplying voltage to a load and battery. In one implementation, an unregulated DC-to-DC converter is electrically connected to a first energy source to down convert a first voltage supplied by the first energy source. A load is electrically connected to the unregulated DC-to-DC converter to receive the down converted first voltage. A regulated DC-to-DC converter is electrically connected to the unregulated DC-to-DC converter to regulate the down converted first voltage to a second voltage. A second power source is electrically connected to the regulated DC-to-DC converter to charge the second power source using the second voltage, and the second power source is switchably connectable to the load.

Abstract: A power distribution apparatus with a backup energy-storing function receives a first input power source, and the apparatus includes an output module, a conversion module, an energy storage unit, and a management unit. When the first input power source is normal, the output module outputs the first input power source. Also, the management unit controls the conversion module to convert the first input power source to a first power source for charging the energy storage unit. When the first input power source is abnormal, the energy storage unit outputs a second power source to the conversion module. Also, the management unit controls the conversion module to convert the second power source into a second input power source for outputting the second input power source from a second output module.

Abstract: Embodiments of the present disclosure include an apparatus. The apparatus includes a voltage supply line, a sense circuit coupled to the voltage supply line, and a bleeder circuit. The sense circuit is configured to sense a voltage level of the voltage supply line. The bleeder circuit is configured to bleed a remaining charge available on a capacitor when the voltage level reaches a device threshold voltage. The device threshold voltage arises from a device connected to the apparatus.

Abstract: A protection circuit can include a first clamping sub-circuit, a first switching sub-circuit and a first resistive sub-circuit coupled in series between a first and second node. The protection circuit can also include a second clamping sub-circuit, a second switching sub-circuit and a second resistive sub-circuit coupled in series between the second and first nodes. The first and second clamping sub-circuits and the first and second resistive sub-circuits can be configured to bias a switching shunt sub-circuit. The switching shunt sub-circuit can be configured to short the first and second nodes together in response to a bias potential from the first and second clamping sub-circuits and the first and second resistive sub-circuits indicative of an over-voltage, Electrostatic Discharge (ESD) or similar event. The first and second switching sub-circuits can be configured to prevent the occurrence of a current path through the first and second resistive sub-circuits at the same time.

Abstract: A flyback power converter includes: a transformer, a primary side switch and a primary side controller circuit. The primary side controller circuit includes: a pulse modulation circuit and a protection control circuit. The pulse modulation circuit generates a pulse modulation signal. The protection control circuit is coupled to the pulse modulation circuit and compares an AC voltage related signal with an over voltage threshold. When the AC voltage related signal exceeds the over voltage threshold, the comparison circuit generates an over voltage protection trigger signal. When the pulse number of the over voltage protection trigger signal exceeds the over voltage counting threshold, the over voltage counter circuit triggers an over voltage protection signal, to indicate that an over voltage condition occurs, and a protection operation is performed.

Abstract: Disclosed is a hybrid electrochemical cell having two (or more) sub-cells each with different cell chemistry. For example, a second electrochemical sub-cell has a metal fuel electrode with the same type of metal fuel in a first electrochemical sub-cell, but has a different battery chemistry than the first sub-cell. A controller is configured to selectively generate an electrical current from at least one sub-cell in a discharge mode and selectively apply an electrical current to at least one sub cell in a charge mode, e.g., by controlling an open or closed state of switches. The operating modes may be controlled based on input parameters.

Abstract: One example includes a relay device that is comprised of a galvanic isolation barrier, a protection control and power extractor, and an electronic switch. The galvanic isolation barrier is coupled to an input of the relay device and receives a switch control signal and outputs another switch control signal. The protection control and power extractor is coupled to an output of the galvanic isolation barrier. The protection control and power extractor extracts power from a power supply coupled to the relay device. The protection control and power extractor is responsive to the other switch control signal and generates a protection signal in response to a determination of an operating parameter of the relay device. The protection control and power extractor further outputs an electronic switch device signal based on the generated protection signal.

Abstract: An interchangeable storage and charging compartments assembly provides a carrying case that contains a plurality of interchangeable compartments. The compartments are sized and dimensioned to retain a plurality of electronic devices and files that match the dimensions of the corresponding compartments. A foam resilient member retains the contents snugly in the compartments. Each compartment, and the corresponding item contained therein, are interchanged from inside the case to accommodate different electronic devices and files. A power supply member integrated in the case provides power independently to each compartment through individual cables. Thus, electronic devices can be powered and data can be transferred to and from electronic devices. A charging port in the sidewall of the case operatively connects power supply to an external power source for recharging. A lid that can be locked and unlocked over the case with a locking mechanism to protect the contents of the compartment cavity.

Abstract: One embodiment provides an electronic control unit (ECU) for a vehicle. The ECU includes transceiver circuitry, voltage measurement circuitry and feature set circuitry. The transceiver circuitry is to at least one of send and/or receive a message. The voltage measurement circuitry is to determine at least one of a high bus line voltage (VCANH) value and/or a low bus line voltage (VCANL) value, for each zero bit of at least one zero bit of a received message. The received the message includes a plurality of bits. The feature set circuitry is to determine a value of at least one feature of a feature set based, at least in part, on at least one of a high acknowledge (ACK) threshold voltage (VthH) and/or a low ACK threshold voltage (VthL). The feature set includes at least one of an operating most frequently measured VCANH value (VfreqH2) of a number of VCANH values and/or an operating most frequently measured VCANL value (VfreqL2) of a number of VCANL values.

Abstract: Devices, methods and systems of disinfecting medical instruments, more particularly blood glucose meters. A disinfection cradle including a flat base for positioning the cradle on a surface, the cradle having a receptacle configured to receive the diagnostic apparatus, and a UV source positioned in the receptacle that is configured to administer a disinfection cycle to the diagnostic apparatus by directing UV light outward at the diagnostic apparatus received in the receptacle, the UV light being able to act as a disinfecting agent to the disinfection cradle and diagnostic apparatus.

Abstract: Early power failure (EPF) detection circuit applies a rectified, unfiltered periodic waveform, at the frequency of the mains supply voltage to a threshold detector. During each cycle of the periodic waveform, the threshold detector produces a pulse voltage having a leading edge when the periodic waveform begins to exceed a threshold level associated with the threshold detector and a trailing edge when the periodic waveform ceases to exceed the threshold voltage. A microprocessor measures the length of the interval between the leading and trailing edges for indirectly measuring the magnitude (for example, RMS or peak) of the mains supply voltage. When the indirectly measured magnitude decreases below a minimum permissible, second threshold magnitude, a controlled power shutdown of the apparatus is initiated, such as by, for example, programs interrupt routine in the microprocessor.

Abstract: A power distribution system in operative association with a source and a plurality of loads includes a converter, a power distribution unit including a plurality of solid state power controllers and configured to provide power from converter to plurality of loads, and a fault protection unit operatively coupled to converter, power distribution unit, or both. The fault protection unit includes a sensor configured to sense current at output terminal of at least one of power distribution unit and converter and a controller configured to compare sensed current with a corresponding threshold value of current, identify presence of a fault in at least one of plurality of loads, power distribution unit, and converter based on comparison, and activate a desired protection scheme to provide fault ride through during the presence of the fault.

Abstract: Apparatus and associated methods relate to a glitch detection circuit monitoring a duration that a selected fractional supply voltage is below a predetermined voltage threshold. The selected fractional supply voltage may be at the predetermined threshold when the supply voltage is between a valid circuit-supply voltage and a power-on circuit-reset (POR). A glitch detect signal may be generated, for example, when the monitored duration is greater than a predetermined duration threshold. A test glitch generator may generate a test glitch, for example, having selectable voltage and duration, which may be selectably applied to the glitch detection circuit to verify operation.

Abstract: An electronic unit for a vehicle communication interface, and a vehicle communication interface of that kind, are described. The electronic unit includes a switch matrix having at least one low-leakage-current switch that is designed to interrupt both communication devices simultaneously.

Abstract: In the examples provided herein, an electrostatic discharge (ESD) recording circuit has a first memristive element coupled to a pin of an integrated circuit. The first memristive element switches from a first resistance to a second resistance when an ESD event occurs at the pin, and the first resistance is less than the second resistance. The ESD recording circuit also has shunting circuitry to shunt energy from an additional ESD event away from the first memristive element.

Abstract: A system and method for testing and ejecting a test strip of a fluid testing medical device. The system includes parallel first and second guide rails defining a rail cavity between the guide rails. A sled includes a sled post and opposed first and second side leg sets each having at least one deflectable leg. Each of the deflectable legs is externally slidably engaged to one of the guide rails limiting the sled to only sliding motion in either a loading direction or an opposite ejection direction. An actuator arm is rotatably connected to a mechanism assembly. The sled post is received in an actuator arm slot. Actuator arm rotation in a loading rotational direction displaces the sled in the loading direction in a sliding motion. Subsequent opposite rotation of the actuator arm in an ejection rotational direction displaces the sled in the ejection direction and ejects the test strip.

Abstract: A power management and distribution system, including a power feed line configured to supply electric power of a given power feed line voltage, a plurality of loads to be supplied with power from the power feed line, each of the loads requiring power of a characteristic load voltage, and a plurality of solid state power controllers (SSPCs) connected between the power feed line and the plurality of loads, each of the solid state power controllers configured to selectively connect a respective load of the plurality of loads to the power feed line or to disconnect the respective load of the plurality of loads from the power feed line.

Abstract: Disclosed are advances in the arts with novel methods and apparatus for detecting faulty connections in an electrical system. Exemplary preferred embodiments include monitoring techniques and systems for monitoring signals at one or more device loads and analyzing the monitored signals for determining fault conditions at the device loads and/or at the main transmission lines. The invention preferably provides the capability to test and monitor electrical interconnections without fully activating the host system.

Abstract: In an electronic device, a monitoring circuit monitors a voltage change with regard to each of an RX2+ terminal and an RX2? terminal in a state where a charging device is connected to a Type-C connector. A determining circuit determines whether a short-circuit between a VBUS terminal and the RX2+ and RX2? terminals has occurred using the voltage change at each of the RX2+ terminal and the RX2? terminal.

Abstract: A two-terminal IC chip and method thereof. For example, a two-terminal IC chip includes a first chip terminal, a second chip terminal, a first switch configured to receive a control signal, a first capacitor coupled to the first switch, a second switch configured to receive the control signal, a second capacitor coupled to the second switch, a third switch configured to receive the control signal, and a third capacitor coupled to the third switch. A first terminal voltage is a voltage of the first chip terminal, a second terminal voltage is a voltage of the second chip terminal, and a chip voltage is equal to a difference between the first terminal voltage and the second terminal voltage.

Abstract: An adapter module including an adapter and a power cord is provided. The adapter includes a first interface, at least a second interface coupled with at least a load, an identifying circuit having a sensing switch configured at the first interface, a controller, and a detecting circuit. The first interface is provided for inserting by a connector of the power cord. The sensing switch changes its on/off state depending on whether the first connector provides a trigger. A first message is generated if the first connector provides the trigger. The controller is coupled to the identifying circuit and receives the first message. The detecting circuit is coupled between the first interface and the second interface for detecting a power parameter value, and provides a second message to the controller. The controller sends a warning message according to the first message and the second message.

Abstract: A USB Type-C interface chip having a CC pin. In an embodiment, the chip includes an internal unit coupled through a signal path to the CC pin; a high voltage detection unit coupled in the signal path, for detecting a voltage at the CC pin and comparing the detected voltage and a reference voltage; a high voltage protection unit for protecting, in response to the comparison result of the high voltage detection unit the internal unit from high voltage possibly present at the port of the chip.

Abstract: A hot-swap protection circuit includes: a hot-swap circuit, a hot-swap detection circuit, and an N-well generation circuit, where the hot-swap detection circuit is configured to detect whether hot-swap is performed on the hot-swap circuit, and feed back a detection result to the N-well generation circuit; and the N-well generation circuit is configured to receive the detection result fed back by the hot-swap detection circuit, and output a control signal according to the detection result, to protect the hot-swap circuit. The hot-swap detection circuit is used to detect whether hot-swap is performed on the hot-swap circuit, and the detection result is fed back to the N-well generation circuit, so that the N-well generation circuit outputs a control signal according to the detection result fed back by the hot-swap detection circuit, to protect the hot-swap circuit, thereby preventing the hot-swap of the hot-swap circuit from burning a host or a peripheral device.