Abstract: A method of controlling a switching power supply comprises: generating a pulse train; applying the pulse train to a switching transistor of the switching power supply to cause switching of the switching transistor on and off to convert an input voltage applied to the switching transistor to an output voltage, which rises while switching the switching transistor on and off and falls while not switching the switching transistor on and off; and performing hysteretic voltage control of the output voltage by first controlling dropping pulses of the pulse train so that the output voltage remains between hysteretic voltage thresholds including an overvoltage threshold and an undervoltage threshold that is less than the overvoltage threshold.

Abstract: A power converter can include a DC-DC converter having an output with an active power buffer coupled thereto. The active power buffer can include an energy storage capacitor and one or more switching devices selectively coupling the capacitor to the output to alternately store energy in and discharge energy from the capacitor. Control circuitry can include a DC-DC converter control loop that operates the DC-DC converter to regulate an average voltage across the capacitor and an active power buffer control loop that operates the one or more switching devices of the active power buffer to regulate an output voltage of the power converter. The DC-DC converter control loop can include a relatively slower control loop that controls the DC-DC converter during steady state load conditions and at least one relatively faster control loop that controls the DC-DC converter during transient load conditions.

Abstract: Disclosed herein is a control circuit of a boost DC/DC converter having a high-side transistor and a low-side transistor. The circuit includes an input pin that receives an input voltage of the boost DC/DC converter, a pulse modulator that generates a pulse signal pulse-modulated in such a manner that output of the boost DC/DC converter comes close to a target state, a logic circuit that generates a control signal of the high-side transistor and a control signal of the low-side transistor on the basis of the pulse signal, and a switch driving circuit that drives a load switch that is a PMOS transistor connected to the high-side transistor and a load between them. When stopping the boost DC/DC converter, the switch driving circuit applies a voltage corresponding to the input voltage of the boost DC/DC converter to a gate of the PMOS transistor.

Abstract: There is described a method of controlling a single inductor multiple output, SIMO, switching converter, the method comprising (a) counting, for each output of the multiple outputs of the SIMO switching converter, a period of time during which an output voltage at the respective output is below a corresponding individual threshold value, (b) identifying that output among the multiple outputs of the SIMO switching converter for which the counted period of time is longest, and (c) connecting the identified output to the single inductor of the SIMO switching converter to supply current from the single inductor of the SIMO switching converter to the identified output. Furthermore, a corresponding controller is described.

Abstract: Distributions of on-chip inductors for monolithic voltage regulation are described. On-chip voltage regulation may be provided by integrated voltage regulators (IVRs), such as a buck converter with integrated inductors. On-chip inductors may be placed to ensure optimal voltage regulation for high power density applications. With this technology, integrated circuits may have many independent voltage domains for fine-grained dynamic voltage and frequency scaling that allows for higher overall power efficiency for the system.

Abstract: A ripple amplitude compensation circuit for ripple-based control of DC-DC converter, wherein the ripple amplitude compensation circuit for adjusts the gains of the voltage loop and ripple loop according to the ripple amplitude. With the present invention, the ripple-based control loop's performance can be optimized.

Abstract: A device enabling dedicated DCDC conversion for key-off electrical loads is described. According to one or more embodiments, a device is provided comprising a battery, one or more main conversion units coupled to the battery, and one or more dedicated key-off conversion units coupled to the battery and to one or more key-off electrical modules.

Abstract: Disclosed is a DC-DC converter of a power conversion system comprising first to fourth switches; fifth to eighth switches; a first capacitor connected to the first and second switches; a second capacitor connected to the fifth and sixth switches; a third capacitor connected to the third and fourth switches; a fourth capacitor connected to the seventh and eighth switches; a first inductor connected to a first node between the first and second switches, and a second node between the fifth and sixth switches; and a second inductor connected to a third node between the third and fourth switches, and a fourth node between the seventh and eighth switches, wherein the first and second inductors are coupled inductors, and a fifth node between the second and third switches, and a sixth node between the sixth and seventh switches are electrically equivalent.

Abstract: Control circuitry for the load voltage of a safety-relevant load is sensitive to values of the load voltage outside a safe voltage range. The control circuitry includes a seventh node, a reference potential, a dominant main control circuit, and a non-dominant emergency control circuit. The seventh node is part of the dominant main control circuit, and not part of the non-dominant emergency control circuit. The load voltage of the safety relevant load drops between the seventh node and the reference potential. The dominant main control circuit includes the load voltage as a control parameter, whereas the non-dominant emergency control circuit does not. In the event of an uninterrupted dominant main control circuit, the load voltage depends on the load voltage, and in the event of an interrupted dominant main control circuit, does NOT depend on the load voltage but is controlled nevertheless.

Abstract: A voltage regulating circuit including a conversion circuit configured to convert a voltage pulse sequence into a filtered analog voltage, wherein the voltage pulse sequence represents a predefined operating limiting voltage, and a regulator configured to receive the filtered analog voltage as regulation variable and to regulate an output voltage of the voltage regulating circuit to a predefined desired voltage.

Abstract: Techniques for ripple-type control of networked physical systems such as power systems, water systems, and others are provided. As one example, a device includes at least one processor configured to determine, for a first controllable device in a system, based on a measurement of an output parameter and a minimum output parameter value, an output violation value for the first device. The processor is further configured to determine, based on a present input value for the first device, the output violation value, and an assistance requisition value corresponding to a second device, a target input value for the first device. The processor is further configured to cause the first controllable device to modify operation based on the target input value and a maximum input value for the first controllable device.

Abstract: A current measuring device for switched-mode electronic power converters includes two independent sensors connected in series for the current to be measured, one of said sensors providing an admittance and the other providing a conductance. The current measuring device further includes a parallel current measuring resistor and an average value capacitor which are connected in parallel contribute to the provided admittance. The conductance is provided by a serial current measuring resistor as one of the sensors. The current to be measured has both DC and AC current components. The current measuring device further includes a filter is transferred back into the power path or merged with the current measuring sensors.

Abstract: A DC power supply device capable of preventing voltage oscillation of a power supply path to a motor control device is provided. The DC power supply device includes a power supply unit (such as an AC/DC converter) that outputs a DC and a filter circuit that detects a voltage fluctuation of the DC output from the power supply unit and adjusts impedance of own circuit such that the voltage fluctuation of the DC is prevented based on a detection result.

Abstract: A secondary-side protection and sense circuit for a power converter has a sensing component, an adder amplifying circuit, an electronic switch, and a charge/discharge circuit. The sensing component is connected to an output connecting terminal of the power converter. The adder amplifying circuit has an operational amplifier, a first resistor, and a second resistor. The operational amplifier has an input terminal connected to the sensing component, an output terminal connected to a primary-side control component, and a power terminal. The first resistor and the second resistor are connected in series and between the input terminal and the power terminal of the operational amplifier. The electronic switch is connected between a ground terminal and a connection node between the first resistor and the second resistor. The charge/discharge circuit is connected to the electronic switch and the power terminal of the operational amplifier.

Abstract: A high-power pulsed surface processing system includes insulated-gate bipolar transistors (IGBT) to replicate desirable pulse structures with high precision, at low cost, and with high reliability within a single system. The pulsed surface processing system includes a power supply, an anode and a cathode, a dual gate driver supplying power to one or more IGBT gates, and one or more capacitor banks. Pulse formation software controls the timing and duration of electrical pulses to the electrodes. A freewheeling diode protects the system from an abrupt reduction of current in the circuit. The high-power pulsed surface processing system may be used to control versatile and complex pulse structures while with precise control of instantaneous pulse powers, pulse timing, and process control. The inclusion of dual gate drivers also offers the ability for multiple pulsers to be created and “slaved” together for a wide variety of custom processes.

Abstract: An electrosurgical generator supplies, during operation, a high-frequency alternating current to an electrosurgical instrument for plasma cutting of body tissue. The electrosurgical generator has outputs for connecting an electrosurgical instrument to supply an electrosurgical instrument connected to the outputs with a high-frequency alternating current, and for determining the impedance of a load connected to the outputs. The electrosurgical generator features impedance and voltage measuring units as well as an output voltage control unit. The output voltage control unit is designed to control the AC output voltage depending on a maximum output voltage value that is set during operation depending on an output value of the impedance measuring unit and/or depending on an output value of the voltage measuring unit, such that the maximum output voltage value predefines a lower AC output voltage during a vaporization phase than during an ignition phase occurring subsequently to the vaporization phase.

Abstract: Systems and methods for adaptively tuning a Proportional, Integral and Derivative (PID) controller in a zero order industrial process are provided. A method and system can involve receiving input data at one or more inputs of the PID controller and generating output data at one or more outputs of the PID controller in response to processing the input data. Error(s) associated with the controller are determined based on an analysis of a measured parameter with respect to a desired setpoint. The measured parameter may be indicated in the output data. Adaptive gain may be applied to the PID controller in response to the absolute value of the controller error both exceeding a deadband and increasing. Additionally, normal gain, which is lower than the adaptive gain, may be applied to the PID controller in response to the absolute value of the controller error either being below the deadband or decreasing.

Abstract: Apparatuses and associated methods for load bank and power generator control are described herein. In one aspect, a method for controlling a load bank can include: receiving input via a human-machine interface (HMI) corresponding to setpoints of operation for the load bank; receiving data via a power quality analyzer and corresponding to load bank operating parameters; determining, via the power quality analyzer, whether the load bank is operating according to the setpoints of operation received from the HMI; and generating a set of commands for adjusting the load bank operating parameters based on whether the load bank is operating according to the setpoints of operation.

Abstract: Adjusting slope compensation. At least one example embodiment is a method including: operating a switching power converter comprising a charge control switch, the charge control switch configured to control power flow through the switching power converter, and the operating by a circuit controller; measuring, by the circuit controller, an attribute of duty cycle of a first period of the charge control switch; measuring, by the circuit controller, an attribute of duty cycle of a second period of the charge control switch; measuring, by the circuit controller, an attribute of duty cycle of a third period of the charge control switch; determining, by the circuit controller, that the switching power converter is experiencing subharmonic oscillation based on the first, second, and third attributes of duty cycle; and changing, by the circuit controller, an attribute of slope compensation responsive to the determining that the switching power supply is experiencing subharmonic oscillation.

Abstract: An embodiment circuit comprises high-side and low-side switches arranged between supply and reference nodes, and having an intermediate node. A switching control signal is applied with opposite polarities to the high-side and low-side switches. An inductive load is coupled between the intermediate node and one of the supply and reference nodes. Current sensing circuitry is configured to sample a first value of the load current flowing in one of the high-side and low-side switches before a commutation of the switching control signal, sample a second value of the load current flowing in the other of the high-side and low-side switches after the commutation of the switching control signal, sample a third value of the load current flowing in the other of the high-side and low-side switches after the second sampling, and generate a failure signal as a function of the first, second and third sampled values of the load current.

Abstract: This disclosure concerns a medical device designed for delivering a medical fluid or designed for controlling delivery of a medical fluid, and to a method of operating such a medical device. The medical device comprises a user interface associated with an electronic circuit connected to a first port and to a second port of a controller. The electronic circuit enables the controller to detect actuation of the user interface. The controller is configured to execute the following sequence of steps: first step: configure the first port as an output port and to apply a first signal to the first port; second step: to acquire a second signal from the second port; and third step: to determine on the basis of the second signal if a short circuit has occurred and to generate a short circuit alert signal if applicable.

Abstract: A controller includes a ramp circuit and control logic. The ramp circuit includes: ramp generation circuitry having a first control input and a first current output; ramp adjustment circuitry having a second control input and a second current output; current scaling circuitry having a first current input, a current sense output and an offset current output, the first current input coupled to the first and second current outputs; and ramp completion circuitry having a current sense input and a completion output, the current sense input coupled to the current sense output. The control logic has a third control input and first and second control outputs. The third control input is coupled to the completion output. The first control output is coupled to the first control input. The second control output is coupled to the second control input.

Abstract: Described embodiments include a voltage regulator circuit comprising a first comparator having a first comparator input coupled to a waveform input source, a second comparator input coupled to an output voltage terminal and a first comparator output. There is a second comparator having third and fourth comparator inputs and a second comparator output, the third comparator input coupled to a voltage source configured to provide a voltage representing a current limit, and the fourth comparator input coupled to the output voltage terminal. There is also a state machine having a first state machine input coupled to the first comparator output, a second state machine input coupled to the second comparator output and a state machine output, wherein a state of the state machine is determined by the first and second comparator outputs, and the state machine output provides a PWM signal responsive to the state of the state machine.

Abstract: A signal analysis circuit for determining whether a supplying-end module of an induction type power supply system receives a modulation signal from a receiving-end module includes a signal receiving circuit, a gain amplifier, a ramp generator, a comparator, a timer and a processor. The signal receiving circuit is configured to obtain a coil signal on a supplying-end coil of the supplying-end module. The gain amplifier is configured to adjust a voltage level of the coil signal to generate an amplification signal. The ramp generator is configured to generate and output a ramp signal. The comparator is configured to compare the amplification signal with the ramp signal to determine a trigger time on which the amplification signal and the ramp signal intersect. The timer is configured to obtain a time data corresponding to the trigger time. The processor is configured to analyze the modulation signal according to the time data.

Abstract: A switching regulator includes a first transistor having a control input and the first transistor is coupled to an input voltage terminal. The regulator includes a second transistor having a control input. The second transistor is coupled to the first transistor at a switch terminal and to a ground terminal. The regulator also includes a controller coupled to the control inputs of the first and second transistor. The controller configured is configured to cause both the first and second transistors to be off concurrently during each of multiple switching cycles for an adaptive high impedance state. The length of time of the adaptive high impedance state is inversely related to current output by the switching regulator.

Abstract: An apparatus includes a controller. The controller receives feedback associated with a device powered by a power source. Sampling of the feedback associated with the device is susceptible to noise caused by a power converter in a vicinity of the controller. To achieve more accurate sampling of the feedback, the controller adjusts operation of the power converter during a window of time in which the power source powers the device. The adjusted operation reduces noise caused by the power converter such that, during the window of time in which the operation of the power converter is adjusted, the controller derives one or more accurate sample values from the received feedback.

Abstract: The present invention concerns an electronic circuit power supply device, configured to: flow, through a first conductor connected to a node, a first current that is an image of a second current consumed by the electronic circuit; flow a third current through a second conductor connected to the node, a first branch of a current mirror conducting the third current; flow a fourth constant current through a third conductor connected to the node; consume a fifth current that is an image of the third current; and regulate a potential of the node by acting on a gate potential of a transistor electrically in series with a second branch of the current mirror.

Abstract: An IC controller for USB Type-C device includes an error amplifier (EA), which includes an EA output coupled to a PWM comparator of a buck-boost converter; a first transconductance amplifier to adjust a current at the EA output, the first transconductance amplifier operating in a constant voltage mode; and a second transconductance amplifier to adjust the current at the EA output, the second transconductance amplifier operating in a constant current mode. A first set of programmable registers is to store a first set of increasingly higher transconductance values. A second set of programmable registers is to store a second set of increasingly higher transconductance values. Control logic is to: cause the first transconductance amplifier to operate while sequentially using transconductance values stored in the first set of programmable registers; and cause the second transconductance amplifier to operate while sequentially using transconductance values stored in the second set of programmable registers.

Abstract: A voltage converter system includes a switch configured to operate in first and second states. Compensation circuitry is configured to provide: a certain reference voltage as a reference voltage when the switch has the second state; and a compensated reference voltage as the reference voltage when the switch has the first state. Control circuitry is configured to switch the switch between the first and second states based on the reference voltage and a feedback voltage generated based on an output voltage of the voltage converter system.

Abstract: An apparatus comprises an emulator and a corresponding compensator. During operation, the emulator produces, at different instants of time, an emulated output current value representative of an amount of current supplied from an output voltage to a load. In general, the compensator provides selective compensation to the emulated output current value over time. For example, for a first time duration, compensation adjustments from the compensator are used to modify the emulated output current value. For a second duration of time, compensation adjustments from the compensator are not used to modify the emulated output current value. Disabling or discontinuing application of adjustments (such as based on the actual measured output current) during the second time duration (such as during a respective transient condition) provides more accurate and timely generation of a respective emulated output current value.

Abstract: A circuit for a multi-phase power regulator including a power stage with a first phase and a second phase, the circuit including phase management circuitry coupled to the first phase and the second phase to control the first phase and the second phase, a first comparator coupled to an output of the multi-phase power regulator to compare a value of the output of the multi-phase power regulator to a first threshold value to produce a first comparison result, and phase shedding circuitry coupled to the first comparator and the phase management circuitry to control the phase management circuitry to activate or deactivate the second phase based at least partially on the first comparison result.

Abstract: A duty timing detector includes: a control logic, the control logic being configured to: receive an input toggle signal and an output toggle signal that corresponds to the input toggle signal, and generate a difference signal using a difference between a duty of the input toggle signal and a duty of the output toggle signal; a first low-pass filter configured to output a DC input voltage based on a pulse width of the input toggle signal; a second low-pass filter configured to output a DC difference voltage based on a pulse width of the difference signal; a compensation circuit configured to compensate the duty of the output toggle signal using the DC input voltage and the DC difference voltage; and an oscillator configured to generate a duty-compensated output toggle signal, and to provide the duty-compensated output toggle signal to the control logic.

Abstract: A power supply system with line loss reduction supplies power to a load through a power line. The power supply system includes a step-up converter, a detection circuit, and a control unit. The control unit sets a terminal voltage required by the load, controls an output voltage of the step-up converter to be terminal voltage, and acquires an output current corresponding to the terminal voltage to be a present current by the detection circuit. The control unit controls the output voltage to be a modulated voltage, and acquires an output current corresponding to the modulated voltage to be a modulated current by the detection circuit. The control unit adjusts the output voltage to be a first predetermined voltage according to the terminal voltage, the present current, the modulated voltage, and the modulated current.

Abstract: A processing system is configured to drive a transmitter electrode with a repetitive multi-burst pattern. The repetitive multi-burst pattern includes a first multitude of bursts of a sensing waveform and a second multitude of bursts of the sensing waveform. The second multitude of bursts is a repetition of the first multitude of bursts. The processing system is further configured to receive, from a receiver electrode, a resulting signal in response to the repetitive multi-burst pattern, and identify, in the resulting signal, a segment least affected by a noise, and that temporally coincides with a burst in the first multitude of bursts or a burst in the second multitude of bursts matching the burst in the first plurality of bursts. The processing system is also configured to decode the resulting signal using the segment.

Abstract: A spike suppression circuit includes a wide bandgap transistor, a first transistor, a clamping circuit, and a capacitor. The wide bandgap transistor is depletion-type. The first transistor is coupled in series with the wide bandgap transistor. The clamping circuit provides a voltage difference, and is coupled to a common node between the wide bandgap transistor and the first transistor. The capacitor provides a supply voltage for the clamping circuit. When the first transistor is turned off, the capacitor can recycle spike energy at the common node.

Abstract: An apparatus includes a first gate drive transistor and a second gate drive transistor connected in series, a common node of the first gate drive transistor and the second gate drive transistor connected to a gate of a power switch, the second gate drive transistor configured as a bulk switch having a bulk terminal connected to a bulk terminal of the power switch, a first auxiliary transistor connected between the bulk terminal and a source of the power switch, a second auxiliary transistor coupled between the gate of the power switch and a system ground, and a third auxiliary transistor coupled between a logic control ground and the system ground, wherein the second auxiliary transistor and the third auxiliary transistor are configured to pull the gate of the power switch and the logic control ground down to the system ground in response to a turn off of the apparatus.

Abstract: The process for starting a power supply circuit which includes a switched-mode power supply is performed using: a first phase during which, if an output voltage of the switched-mode power supply is lower than a first voltage, the switched-mode power supply operates in pulse width modulation mode to increase its output voltage up to said first voltage; and when the output voltage has reached the first voltage, a second phase during which the switched-mode power supply operates in a bypass mode.

Abstract: A switching regulator may be used to generate an output voltage from an input voltage. The switching regulator includes; an inductor including a first terminal and a second terminal that passes an inductor current from the first terminal to the second terminal, a first switch that applies the input voltage to the first terminal when turned ON, a second switch that applies a ground potential to the first terminal when turned ON, a feedback circuit configured to estimate a load receiving the output voltage, detect when the inductor current reaches an upper bound or a lower bound, and adjust the lower bound based on the estimated load, and a switch driver configured to control the first switch and the second switch, such that the inductor current is between the upper bound and the lower bound in response to at least one feedback signal provided by the feedback circuit.

Abstract: An apparatus includes a power converter and an estimator. The power converter produces an output voltage to power a load via current through an inductor. The estimator receives a current sense signal from a current monitor resource. The current sense signal represents/indicates a measured magnitude of the current supplied to the load through the inductor over time during one or more power delivery control cycles. Portions of the current sense signal may be an inaccurate representation of an amount of current through the inductor. Via the current sense signal, or portion thereof, the estimator determines (such as calculates) an inductance (value) of the inductor. The estimator then uses the calculated inductance value to estimate a magnitude of the output current supplied through the inductor to the load.

Abstract: In an embodiment, an apparatus includes: an amplifier to compare a reference voltage to a feedback voltage and to output a comparison signal based on the comparison; a first loop circuit coupled to the amplifier to receive the comparison signal and output a first feedback voltage for the amplifier to use as the feedback voltage in a first mode of operation; and a second loop circuit coupled to the amplifier. The second loop circuit may be configured to receive the comparison signal and output a second feedback voltage for the amplifier to use as the feedback voltage in a second mode of operation. The second feedback voltage may be greater than the first feedback voltage, and the second loop circuit may output a regulated voltage based on the comparison signal.

Abstract: A ripple voltage control circuit for controlling a switching converter, including: a control circuit configured to superimpose a compensation voltage and a ripple voltage on a feedback voltage that represents an output voltage of the switching converter, in order to generate a ripple signal; the control circuit being configured to superimpose a bias voltage on a reference voltage that represents a desired output voltage of the switching converter as a reference signal, and to compare the ripple signal against the reference signal in order to generate a turn-on signal for a main power switch of the switching converter; and where the compensation voltage adaptively varies with a duty cycle of the main power switch, such that the ripple signal is independent of the duty cycle, in order to maintain the feedback voltage as equal to the reference voltage.

Abstract: Provided is multi-phase interleaving control in a power supply device, the control allowing the pulse widths ?T of respective phases to overlap one another, so as to be adaptable to wideband pulse power control. In applying dead beat control to the multi-phase interleaving, constant current control is performed using combined current of the respective phase current values, and the pulse widths ?T(k) is computed under this constant current control, thereby preventing variation of the pulse widths ?T(k) between the phases, and achieving stable power control. Accordingly, the pulse power control becomes adaptable to wideband. Furthermore, wideband control is possible also in two-level pulse power control that performs control by switching at high frequency between High-level power and Low-level power.

Abstract: A circuit comprising a frequency to voltage converter having an input configured to receive a signal and an output coupled to a first node and another frequency to voltage converter having an input configured to receive a reference clock and an output coupled to a second node. The circuit also comprises a voltage source coupled between the first node and a third node, a voltage source coupled between the second node and a fourth node, a switch coupled between the first node and the third node, and a switch coupled between the second and fourth nodes. The circuit further comprises a comparator having an input coupled to the second node, another input coupled to the third node, and an output, a logic circuit having an input coupled to the comparator output and an output, and a counter having an input coupled to the logic circuit output and an output.

Abstract: A power supply system includes a battery disposed on a vehicle lower portion; a feeder line electrically coupled to the battery, wired inside a hollow front pillar that couples a vehicle upper portion with the vehicle lower portion, and configured to supply electric power from the battery to the vehicle upper portion; and a power distributor disposed on the vehicle upper portion, electrically coupled to the feeder line, and configured to distribute the electric power that is input from the feeder line to load devices disposed on a vehicle. As a result, the power supply system can improve the workability of wiring work.

Abstract: A voltage regulation system utilizes a controller to select one of a continuous comparator and a discrete comparator to operate, making one of the continuous comparator and the discrete comparator output a pulse signal to the controller. The controller controls a switched power stage circuit to supply power to a load element. Through the aforementioned configuration, the switched power stage circuit adjusts the power supply based on the condition of the load element, thus decreasing the power loss of the switched power stage circuit.

Abstract: In some examples, an apparatus comprises a switching regulator circuit, an output circuit, a duty cycle comparison circuit, a current comparison circuit, and a switching regulator control circuit. The switching regulator circuit switches between first and second voltages. The output circuit has a voltage input and a voltage output and generates a signal based on the first and second voltages. The duty cycle comparison circuit asserts a first signal responsive to a voltage at the voltage output exceeding a product of a multiplier and a reference signal. The current comparison circuit asserts a second signal responsive to a voltage at the voltage input exceeding a first reference voltage and to assert a third signal responsive to the voltage at the voltage input being below a second reference voltage. The switching regulator control circuit controls the switching regulator circuit based on the first, the second, and the third signals.

Abstract: A switching network includes a switch, a driver for the switch, and a floating-regulator that powers the driver. The floating-regulator includes a shunt that is used only when testing the network. The shunt diverts biasing current so that it does not interfere with a measurement of an electrical property of a switch.

Abstract: A power-supply apparatus includes a power-supply circuit to which an input voltage and an input current are input, to include a switching element to be controlled by a control signal so as to generate an output voltage and an output current, a memory, and a processor coupled to the memory and the processor to calculate a first duty ratio of the control signal so that the output voltage approaches a target voltage, calculate a second duty ratio of the control signal for the switching element, based on the input voltage, the input current, the output voltage, and the output current, detect deterioration of the power-supply circuit, based on the first duty ratio and the second duty ratio, generate the control signal of the first duty ratio when the power-supply circuit has not deteriorated, and generate the control signal for stopping the power-supply circuit when the power-supply circuit has deteriorated.

Abstract: According to an aspect, a power supply is provided. The power supply includes a plurality of voltage converters including a first voltage converter and one or more other voltage converters. The power supply also includes a power supply control configured to perform a plurality of operations including enabling the first voltage converter during a start-up mode of operation, monitoring and regulating an output of the first voltage converter, reconfiguring the power supply control to enable the one or more other voltage converters based on determining that the output of the first voltage converter meets a regulation threshold, and transitioning from the start-up mode of operation to a regular mode of operation based on enabling the one or more other voltage converters to output one or more regulated voltages by the power supply.

Abstract: In recent years, an improvement in detection accuracy of an overcurrent is desired. An overcurrent detection device is provided, which includes a gate current detection unit that detects whether a gate current flowing to a semiconductor element is equal to or above a reference gate current; a sense current detection unit that detects whether a sense current flowing through a sense-emitter terminal of the semiconductor element is equal to or above a reference sense current; and an adjustment unit that decreases a detected value of the sense current relatively to the reference sense current if the gate current is equal to or above the reference gate current.