Abstract: A drive device adapted to drive a semiconductor power device, wherein the drive device comprises a drive circuit comprising a first terminal adapted for connection to a first terminal of the power device, a gate terminal adapted to provide a driving signal for a gate terminal of the power device, a sensor for detecting overvoltage conditions at the first terminal of the power device, and wherein the drive circuit is adapted to modify the driving signal when the sensor detects an indication of an overvoltage condition, and wherein the drive circuit including the sensor is integrated onto a single substrate.

Abstract: A tester tool for a sensor and related method includes connecting the sensor to the tester tool, activating the tester tool to operate the sensor, and testing the sensor. The tester tool includes a power supply, a control module, a display module and a connector plug adapted for releasable connection with a sensor connector plug, the connector plug being connected to the power supply for receiving power to operate the sensor, and to the control module for providing information to the control module from the sensor. The display module provides information to a user indicative of operation of the sensor when the sensor is active and receives power to operate from the power supply.

Abstract: The present invention discloses a DC solid-state circuit breaker with self-adapt fault current limiting capability. The topology of the DC solid-state circuit breaker is a H-bridge circuit consisting of two unidirectional breakable bridge arms and two series-connected diode bridge arms, wherein the two unidirectional breakable bridge arms are connected in series to the two series-connected diode bridge arms in a same direction to form two series branches, respectively; the series branches are connected in parallel; a series branch formed by a DC reactor L and a DC biased power supply is connected to the PCC between the two unidirectional breakable bridge arms and the PCC between the two series-connected diode bridge arms; the DC line is connected to the two PCCs, respectively.

Abstract: A display device includes: a display panel including data lines, gate lines, and pixels, the display panel is operated in an active period or in a blank period; and a driving circuit for driving the display panel, the driving circuit including: a signal controller for outputting clock control signals; a voltage generator for receiving the clock control signals, wherein the voltage generator outputs active clock signals synchronized with the clock control signals during the active period and outputs blank clock signals during the blank period; and an overcurrent detection circuit for receiving the clock control signals and the blank clock signals, the overcurrent detection circuit detects an overcurrent of the blank clock signals, and a phase difference between the clock control signals in the active period is different from a phase difference between the clock control signals in the blank period.

Abstract: A device, battery and method for spark detection based on transient currents is provided. The battery includes: a cell; an interface; a first protection circuit and a second protection circuit. The first protection circuit comprises a first switch between the cell and the interface. The second protection circuit comprises a second switch between the cell and the interface. The first protection circuit is configured to: measure a load current on the cell; and open the first switch according to a first delay time based on the measurement of the load current. The second protection circuit is configured to: measure a transient current on the cell above the load current; and open the second switch according to a second delay time, lower than the first delay time, based on the measurement of the transient current.

Abstract: A circuit breaker is proposed, comprising a live line and a neutral line and a semiconductor switching unit located in the live line, the circuit breaker further comprises a bypass line, which is connected in parallel to the semiconductor switching unit, with a first mechanical switch and a second mechanical switch located in the bypass line, with the first mechanical switch connected in series to the second mechanical switch, whereby the semiconductor switching unit, the first mechanical switch and the second mechanical switch are controlled by a processing unit of the circuit breaker, which is embodied to send a first opening command to the first mechanical switch in case of a short-circuit-detection, and sending a second opening command to the second mechanical switch a time-delay after sending of the first opening command.

Abstract: A regulator includes: a first transistor connected between an input terminal and an output terminal; a feedback circuit configured to control a control voltage of a control electrode of the first transistor such that a voltage of the output terminal approaches a target voltage according to a feedback voltage proportional to the voltage of the output terminal; a second transistor having one end connected to the input terminal and a control electrode to which the control voltage is applied in common with the first transistor; and a clamp circuit configured to set the other end of the second transistor to a voltage determined by the voltage of the output terminal.

Abstract: A short-circuit protection circuit for a self-arc-extinguishing type semiconductor element includes a first protection circuit and a second protection circuit. The first protection circuit is configured to reduce a voltage between a control electrode and a first main electrode of the self-arc-extinguishing type semiconductor element when detecting overcurrent flowing between the first main electrode and a second main electrode. The second protection circuit is configured to: detect current flowing in an interconnection adapted to supply the drive voltage; determine, based on the detected current, whether the first protection circuit is in an operating state; and change the drive voltage to turn off the self-arc-extinguishing type semiconductor element when the first protection circuit is in the operating state.

Abstract: The invention relates to a novel approach for the protection of electrical circuits from ground faults and parallel and series arc faults in a fully solid-state circuit configuration. Solid-state circuits and methods of use are described that provide the key functions of low-voltage DC power supply, mains voltage and current sensing, fault detection processing and high voltage electronic switching.

Abstract: A system for current measurement and ground fault detection is disclosed. In embodiments, the system includes a plurality of Hall Effect sensors configured to detect phase currents associated with at least one portion of a multi-phase system. The system further includes a plurality of phase current measurement circuits and a ground fault detection circuit connected to the Hall Effect sensors. The phase current measurement circuits are configured to measure the phase currents detected by the Hall Effect sensors, and the ground fault detection circuit is configured to measure a summation of the phase currents detected by the Hall Effect sensors.

Abstract: A power switch circuit is disclosed. The power switch circuit includes a switch circuit, a first current protection circuit, a second current protection circuit and a selection circuit. The switch circuit is coupled between an input terminal and an output terminal. The switch circuit includes a first sensing switch, a second sensing switch and a power switch. The first sensing switch, the second sensing switch and the power switch are the same cell. The first current protection circuit is coupled to the second sensing switch. The second current protection circuit is coupled to the first sensing switch. The selection circuit is coupled to the switch circuit, first current protection circuit and second current protection circuit. The selection circuit generates a selection signal according to an output voltage to selectively enable the first current protection circuit or second current protection circuit.

Abstract: To join two sources in parallel, the second source output is lowered and then raised until two diodes providing an auxiliary path are passing current. This can reduce current spikes. Alternatively, the diodes can reversed, the voltage raised, and the lowered until diose are passing current.

Abstract: A power switch over current protection system including a power switch transistor configured to deliver a power current from a power source to power load, a power switch driver configured to control and on/off state of the power switch, an over current protection (OCP) circuit to detect a threshold value of the power current, a discharge transistor configured to discharge a parasitic capacitance of the power switch transistor, and a system state machine to receive a signal from the OCP circuit configured to control an action of the power switch driver and discharge transistor depending on the level of the power current.

Abstract: The present disclosure relates to a driver device, which can drive a load in high temperatures. In a driver IC which drives a motor by switch-driving four output transistors, a gate driving circuit is configured to render a slew rate of a gate voltage of each output transistor to be adjustable at multiple steps while the output transistor is switching. Although a predetermined rate is set to be the slew rate of the gate voltage in a normal state, the slew rate is increased at high temperatures.

Abstract: The present application discloses a method for driving a display panel for displaying images. The method includes determining multiple subpixels in a bright area of an image to be displayed by the display panel. The bright area is an image display area having a luminance value maintained greater than a threshold luminance value for a duration longer than a threshold duration. Additionally, the method includes driving the multiple subpixels to emit light alternatingly in a period of alternate light-emission for displaying the image. Furthermore, the method includes driving all adjacent subpixels surrounding any one subpixel that is not emitting light during the period of alternate light-emission to provide luminance rendering to the one subpixel such that the luminance value of the bright area is greater than the threshold luminance value.

Abstract: An embodiment electronic circuit includes an electronic switch comprising a load path, and a control circuit configured to drive the electronic switch and configured to operate in one of a first operation mode and a test mode. The control circuit comprises a test mode input and is configured to operate in the test mode based on a test signal received at the test mode input. The control circuit in the first operation mode is configured to generate a first protection signal based on a current-time-characteristic of a load current of the electronic switch and drive the electronic switch based on the first protection signal.

Abstract: Described herein are mechanisms and methods for blocking the propagation of signals to Integrated Circuit (IC) components that have been power gated, rather than simply suffering from leakage through signals that might not be parked in a low state. In some embodiments, switches that block the flow of current in such signals may enable turning off power to any IC component and not just to circuits on an IC component that make sole use of protocols that are friendly to power gating. This may advantageously increase power savings, by permitting more portions of a system in an idle state to be power gated, or by reducing or eliminating leakage in signals on boundaries of blocks being power gated, or both.

Abstract: Disclosed is a circuit breaker apparatus, including a first switching assembly, a first controller, a second switching assembly and a second controller. The first switching assembly is connected in series between a positive pole of a power supply and a load. The first switching assembly includes multiple first switching units in series. The first controller is electrically connected to a first pre-set reference potential of the first switching assembly. The first controller is electromagnetically coupled with each first switching unit through a first transformer unit. The second switching assembly is connected in series between a negative pole of the power supply and the load. The second switching assembly includes multiple second switching units in series. The second controller is electrically connected to a second pre-set reference potential of the second switching assembly. The second controller is electromagnetically coupled with each second switching unit through a second transformer unit.

Abstract: The present application discloses a method for driving a display panel for displaying images. The method includes determining multiple subpixels in a bright area of an image to be displayed by the display panel. The bright area is an image display area having a luminance value maintained greater than a threshold luminance value for a duration longer than a threshold duration. Additionally, the method includes driving the multiple subpixels to emit light alternatingly in a period of alternate light-emission for displaying the image. Furthermore, the method includes driving all adjacent subpixels surrounding any one subpixel that is not emitting light during the period of alternate light-emission to provide luminance rendering to the one subpixel such that the luminance value of the bright area is greater than the threshold luminance value.

Abstract: The invention relates to a fuse system for at least one load of a vehicle, the fuse system having a fuse apparatus that has at least one electronic fuse for the at least one load and an evaluation and control circuit that evaluates a load current through the at least one electronic fuse and compares the load current with at least one prescribed disconnection criterion of a first parameter set, wherein the evaluation and control circuit initiates a trip process that trips the at least one electronic fuse and disconnects the load current to the corresponding load if the at least one prescribed disconnection criterion is satisfied.

Abstract: The battery protection integrated circuit includes: a higher-level reception terminal configured to receive information from a higher-level circuit; a lower-level transmission terminal configured to transmit information to a lower-level circuit; a storage configured to store a unique identification information; a higher-level signal input terminal configured to be supplied with a permission signal; a lower-level signal output terminal configured to output a second permission signal to the lower-level circuit; a storage controller configured to store a unique identification information when the identification information is not stored, and when the permission signal is supplied; and a switch configured to make the lower-level signal output terminal not provide the second permission signal when the identification information is not stored in the storage, and make the lower-level signal output terminal provide the second permission signal when the identification information is stored in the storage.

Abstract: In a described example, an apparatus includes: a first metal oxide semiconductor field effect transistor (MOSFET) coupled between a first input terminal for receiving a supply voltage and an output terminal for coupling to a load, and having a first gate terminal; an enable terminal coupled to the first gate terminal for receiving an enable signal; a first current mirror coupled between the first input terminal and a first terminal of a first series resistor and having an input coupled to the first gate terminal; and a second MOSFET coupled between the first gate terminal and the output terminal, and having a second gate terminal coupled to the first terminal of the first series resistor, the first series resistor having a second terminal coupled to the output terminal.

Abstract: An objective of the invention is to provide a bidirectional power valve for current occurring in a high voltage DC conductor, control method therefor, hybrid multi-terminal HVDC System using the same. The bidirectional power valve includes a first power diode arrangement of a first conducting direction, a second power diode arrangement of a second conducting direction; a mechanical disconnector, being connected with the second power diode arrangement in series; wherein: the first power diode arrangement and the series-connected second power diode arrangement and the mechanical disconnector are connected in parallel; and the first conducting direction of the first power diode arrangement and the second conducting direction of the second power diode arrangement are opposite to each other. The current commutation and re-commutation can be achieved with less requirement of the timing accuracy of switching event which makes the usage of a mechanical disconnector and power diode feasible.

Abstract: According to one embodiment, there is provided a semiconductor integrated circuit including a first switch transistor, a first reference transistor, a differential amplifier circuit, and a current source. The first switch transistor is electrically connected between a first node on an input terminal side and a second node on an output terminal side. The first reference transistor is electrically connected between the first node and a third node. The differential amplifier circuit has a first input terminal electrically connected to the second node, a second input terminal electrically connected to the third node, and an output terminal electrically connected to a gate of the first switch transistor and a gate of the first reference transistor. The current source is electrically connected between the third node and a reference potential. The first reference transistor has dimensions smaller than dimensions of the first switch transistor.

Abstract: The disclosure relates to a protective circuit for a photovoltaic (PV) module that includes an input having two input terminals for connecting the PV module, an output having two output terminals for connecting further PV modules of a series circuit comprising PV modules, a first switch for connecting one of the input terminals to one of the output terminals, and a controller configured to control the first switch, wherein the protective circuit further includes a series circuit including a first diode and an energy store, wherein the series circuit is arranged in parallel with the input of the protective circuit. The protective circuit also includes a second diode, which connects an output terminal of the protective circuit to a midpoint of the series circuit including the first diode and the energy store, and wherein a series circuit including the second diode and the energy store is connected in parallel with the first switch.

Abstract: A composite circuit protection device includes a positive temperature coefficient (PTC) component, a voltage-dependent resistor, a first conductive lead and a second conductive lead. The PTC component includes a PTC polymeric layer, and first and second electrode layers respectively disposed on two opposite surfaces of the PTC polymeric layer. The voltage-dependent resistor is connected to the second electrode layer of the PTC component. The first and second conductive leads are respectively bonded to the first electrode layer of the PTC component and the voltage-dependent resistor. The PTC component has a rated voltage ranging between 40% and 200% of a varistor voltage of the voltage-dependent resistor.

Abstract: In order both to accommodate instantaneous current as well as overcurrent protection in accordance with the load, an overcurrent protection circuit has: a threshold value generation unit that, in accordance with a threshold value control signal, switches between setting an overcurrent detection threshold value to a first set value (? Iref) and a second set value (? Iset) lower than the first set value; an overcurrent detection unit that compares a sense signal in accordance with the current being monitored and the overcurrent detection value and generates an overcurrent protection signal; a reference value generation unit that generates a reference value (? Iset) in accordance with the seconds set value; a comparison unit that compares the sense signal and the reference value, and generates a comparison signal; and a threshold value control unit that monitors the comparison signal, and generates a threshold value control signal.

Abstract: A high speed arc suppressor and method include a first phase-specific arc suppressor configured to suppress arcing across contacts of the power contactor in a positive domain and a second phase-specific arc suppressor configured to suppress arcing across the contacts in a negative domain. First and second high speed switches are configured to enable and disable operation of an associated one of the first and second phase-specific arc suppressors. First and second drivers are configured to drive the first and second high speed switches.

Abstract: An object is to provide an air conditioner that can prevent malfunctions due to an inrush current, where the air conditioner includes an inrush-current prevention resistor that prevents inflow of an inrush current from an AC power supply, a relay-a operation unit as a first relay that is serially connected to the inrush-current prevention resistor, a relay-b operation unit as a second relay that is connected in parallel to the inrush-current prevention resistor and the relay-a operation unit as the first relay, an indoor control unit that controls ON and OFF of the relay-a operation unit as the first relay, and an outdoor control unit that controls ON and OFF of the relay-b operation unit as the second relay. When power is being supplied from the AC power supply via the relay-a operation unit as the first relay, the outdoor control unit turns ON the relay-b operation unit as the second relay.

Abstract: An electronic circuit breaker having a control unit and a controllable semiconductor switch which is connected in a current path between a voltage input and a load output, wherein the semiconductor switch is integrated into a voltage-controlled current source circuit, the output current of said current source circuit when the load is connected being adjusted by means of the control unit in such a way that the power of the semiconductor switch is lower than or equal to a maximum power value, and wherein the control unit outputs a setpoint value to the voltage-controlled current source circuit and receives a difference value from said voltage-controlled current source circuit, which difference value is formed from a deviation of an actual value, which represents the output current, from the setpoint value and is supplied to the semiconductor switch as a control signal for driving said semiconductor switch.

Abstract: A DC electrical network comprising DC terminals operatively connectable to a converter; and DC transmission paths arranged to interconnect the DC terminals, and including a DC power transmission medium and a switching apparatus. The DC network further including: an active power electronic device connected in at the DC transmission paths, the active power electronic device; a detector configured to detect faults in the DC transmission paths; and a control unit programmed to operate the active power electronic device to vary an apparent impedance of a faulty DC transmission path to force a current flowing in the faulty DC transmission path to reduce to a target current level, and operate the switching apparatus to block current from flowing in the faulty DC transmission path when the current flowing in the faulty corresponding DC transmission path is reduced to the target current level.

Abstract: A method for operating an electrical circuit for controllably delivering power from a power source to an electrical load including a switch further configured to operate in a first conducting mode and a second non-conducting mode, and a controller, the method includes ceasing delivering power from the power source to the electrical load.

Abstract: A multiphase charging circuit includes a first phase having a first switch and a second phase having a second switch to provide a system voltage for a system load, a control method of the multiphase charging circuit includes: generating a plurality of feedback control signals with generating each of feedback control signal based on a corresponding feedback signal, a ramp signal, a corresponding reference signal and a current flowing through the first phase; selecting one of the plurality of feedback control signals as a first enable signal; generating a first control signal of the first switch based on the first enable signal and a first time period control signal; generating a second enable signal by shifting a pre-determined phase difference to the first control signal; and generating a second control signal of the second switch based on the second enable signal and a second time period control signal.

Abstract: System and method for providing at least an output current to one or more light emitting diodes. The system includes a control component configured to receive at least a demagnetization signal, a sensed signal and a reference signal and to generate a control signal based on at least information associated with the demagnetization signal, the sensed signal and the reference signal, and a logic and driving component configured to receive at least the control signal and output a drive signal to a switch based on at least information associated with the control signal. The switch is connected to a first diode terminal of a diode and a first inductor terminal of an inductor. The diode further includes a second diode terminal, and the inductor further includes a second inductor terminal.

Abstract: Methods and apparatuses for detecting when an electronic device, preferably a portable electronic device (PED) in some embodiments, has been exposed to moisture, and inhibiting the flow of electrical power to the electronic device when the moisture is too high or increasing too fast are disclosed. Embodiments sample air within the device, measure the moisture in the sampled air, inhibit the connection of electrical power to the device if the moisture exceeds a threshold, and permit the connection of electrical power to the device if the moisture is below a threshold. Some embodiments measure the moisture in the ambient air to improve effectiveness. Other embodiments allow resetting of a tripped condition. Other embodiments include constant sampling of air from within the device to assist drying, and inhibiting application of power to the device until the device is sufficiently dry. Still other embodiments interrupt power from the battery within the device.

Abstract: A system electrostatic discharge circuit is provided. The system electrostatic discharge circuit includes a first transient voltage suppressor diode and a first resistance element. The first resistance element and the first transient voltage suppressor diode are coupled in series between a first power line and a second power line. In addition, a resistance value of the first resistance element is proportional to a sum of currents flowing through the first resistance element.

Abstract: Resonant power converters. Example embodiments are integrated circuit controllers for a resonant power converter, the controllers including: a frequency controller configured to control frequency of signals driven to a high-side gate terminal and a low-side gate terminal; a fault detector configured to sense an overcurrent condition of a primary winding of the resonant power converter, and to assert an overcurrent signal responsive to the overcurrent condition; a feedback controller that, during periods of time when the overcurrent signal is de-asserted, is configured to sense a signal representative of output voltage by way of the feedback terminal and to create an intermediate signal; and the feedback controller further configured to, during periods when the overcurrent signal is asserted, modify the intermediate signal to increase the frequency of the signals driven to the high-side gate terminal and the low-side gate terminal.

Abstract: A motor vehicle comprises a motor configured to input and output power for driving; an inverter configured to drive the motor; a power storage device configured to transmit electric power to and from the motor; a system main relay configured to connect and disconnect the power storage device with and from a power line on an inverter-side; and a control device configured to enable the motor vehicle to be driven with turning on the system main relay according to a predetermined procedure in response to a system on-operation. The motor vehicle does not perform failure diagnosis of the inverter when an abnormality signal of the inverter is generated before a predetermined time after the system main relay is turned on in response to the system on-operation, while performing the failure diagnosis when the abnormality signal of the inverter is generated after the predetermined time.

Abstract: A system for compensating the input signals to arrays of pixels that include semiconductor devices that age differently under different ambient and stress conditions. The system creates a library of compensation curves for different stress conditions of the semiconductor devices; identifies the stress conditions for at least a selected one of the semiconductor devices based on the rate of change or absolute value of at least one parameter of at least the selected device; selects a compensation curve for the selected device based on the identified stress conditions; calculates compensation parameters for the selected device based on the selected compensation curve; and compensates an input signal for the selected device based on the calculated compensation parameters.

Abstract: Disclosed is a DC circuit breaker including at least one contact configured to be coupled between a source of DC power and a DC load and a method of controlling the closed and open state of the contact. The DC circuit breaker includes a thermomagnetic trip circuit and an electronic trip circuit. The electronic trip circuit is responsive to a sensed level of DC current flowing in the contact in a closed state for accumulating an indication of the total time the DC current is sensed. The accumulated indication of the total time the DC current is sensed is compared to a predetermined value or level and, in response to the accumulated indication exceeding the predetermined value or level, the contact is caused to switch from a closed state to an open state.

Abstract: A linear solenoid driving device that drives a linear solenoid, the linear solenoid driving device includes a driving circuit that performs switching control over a switching element connected to the linear solenoid based on a driving command; a current detection circuit that has a detection resistor which is connected to the switching element and the linear solenoid, and detects a current, and an operational amplifier which amplifies a voltage across both ends of the detection resistor and outputs the amplified voltage; a reference voltage output circuit that outputs a reference voltage which has a same temperature characteristic as an output voltage of the operational amplifier; and a control unit.

Abstract: An alternating current-direct current (AC-DC) converter includes: an input AC power supply that outputs an input AC voltage; a step-up converter that converts the input AC voltage into an output DC voltage to be outputted from an output capacitor; and an inrush current suppressing circuit. The inrush current suppressing circuit includes: an inrush current suppressing resistor provided on a path through which a current from the input AC power supply flows to charge the output capacitor and returns to the input AC power supply; a resistance short-circuiting switch that short-circuits the inrush current suppressing resistor; and a control circuit that generates a signal for turning off the resistance short-circuiting switch when an absolute value of the input AC voltage is higher than the output DC voltage.

Abstract: Systems for and methods of synchronous rectification in a flyback power converter are disclosed. In accordance with an embodiment, a switching power supply comprises a power converter and a controller. The power converter has an inductor, a capacitor and a switching element. The switching element is configured to rectify a current in the inductor for charging the capacitor to form a voltage for powering a load. The switching element comprises a switch and a diode. The controller is configured to control the switching element and to detect a load condition. When the load condition is detected, the controller controls the switching element to actively rectify the current in the inductor for charging the capacitor. When the load condition is not detected, the controller holds the switching the element open such that the current is passively rectified by the diode.

Abstract: An un-interruptible power supply (UPS) with indication of battery internal resistance includes a processor, a display, an internal resistance sensor assembly and a battery pack. The internal resistance sensor assembly is connected to the processor and the battery pack. The processor is connected to the display, generates a reference internal resistance according to multiple internal resistances detected by the internal resistance sensor assembly within a stable time after installation, generates a stable internal resistance according to an internal resistance of the battery pack detected by the internal resistance sensor assembly after the stable time, compares the stable internal resistance with the reference internal resistance to generate a status of internal resistance of the battery pack, and instructs the display to display the status for user's timely awareness of the condition of the battery pack and prompt action when the performance of the battery pack deteriorates.

Abstract: In one embodiment, there is a fault interrupter device comprising at least one sensor comprising at least one first transformer having at least one outer region forming an outer periphery and at least one inner hollow region. There is also at least one second transformer that is disposed in the inner hollow region of the at least one first transformer. The transformers can be substantially circular in configuration, and more particularly, ring shaped. In another embodiment there is a rotatable latch which is used to selectively connect and disconnect a set of separable contacts to selectively disconnect power from the line side to the load side. The rotatable latch is in one embodiment coupled to a reset button. In at least one embodiment there is a slider which is configured to selectively prevent the manual tripping of the device.

Abstract: A fast-acting power protection system and a related method of power protection are disclosed. The fast-acting power protection system includes a current limiting block capable of reducing or blocking an unwanted current or voltage surge at an input terminal of the fast-acting power protection system. The fast-acting power protection system can include an NMOS-based power switch unit, a current-limiting block control unit, and an NMOS-based active Zener clamp, which may be separated or combined on hybrid substrates of a single semiconductor package for improved design and manufacturing scalability, cost efficiency, and reliability. Depending on design preferences, the NMOS-based active Zener clamp may be integrated into the current-limiting block control unit or remain separate. The fast-acting power protection system protects an electrical device connected to an output terminal of the fast-acting power protection system from an unwanted voltage surge by rapidly clamping an output voltage to a clamp voltage.

Abstract: The disclosure discloses a current balance circuit, which comprises a current sensing unit, a reference unit and an adjusting unit. The current sensing unit is configured to receive a plurality of input currents flowing through a plurality of channels having different impedances, and generate a plurality of corresponding input voltages according to the plurality of input currents. The reference unit is coupled to the current sensing unit, and configured to distribute a plurality of setting voltages corresponding to a plurality of output ends according to an output current ratio related to the plurality of output ends and the plurality of input voltages. The adjusting unit is coupled to the current sensing unit and the reference unit, and configured to adjust the plurality of input currents according to the plurality of setting voltages and input voltages, and generate a plurality of output currents to prevent a channel from being overloaded.

Abstract: An analog transmit/receive switch and voltage detection circuit that do not require depletion mode devices are provided. The switch may be configured to operate in a receive mode and a protection mode. The voltage detection circuit may be coupled to the switch and may be configured to measure a potential difference between two terminals of the switch. The switch and the voltage detection circuit may not include any depletion mode devices.

Abstract: A wheel sensor interface apparatus may include: a wheel sensor interface unit configured to supply power to a wheel sensor of a vehicle, or sense an output current of the wheel sensor and transmit the sensed current to a microprocessor unit of the vehicle; and an over-current detection unit including: a reference current generation unit configured to generate a reference current using a voltage across a resistor through which the output current flows; and a voltage level decision unit configured to decide a voltage level according to the reference current. The over-current detection unit may determine whether the output current is an over-current, according to the voltage level.

Abstract: There has been a problem in semiconductor apparatuses of related art in which a circuit operation cannot be returned after a reverse current occurred. In one embodiment, a semiconductor apparatus includes a timer block configured to count up a count value to a predetermined value in response to a control signal being enabled, the control signal instructing a power MOS transistor to be turned on, and a protection transistor including a drain connected to a gate of the power MOS transistor, a source and a back gate connected to a source of the power MOS transistor, and an epitaxial layer in which the power MOS transistor is formed, the epitaxial layer being supplied with a power supply voltage. The protection transistor short-circuits the source and gate of the power MOS transistor in response to an output voltage of the power MOS transistor meeting a predetermined condition and the count value reaching the predetermined value.