Abstract: A wireless power transmitting device transmits wireless power signals modulated at a given power frequency to a wireless power receiving device using a wireless power transmitting coil. The wireless power receiving device may transmit data signals to the wireless power transmitting device. The wireless power transmitting device may include a data receiver that is coupled to the wireless power transmitting coil and that receives the transmitted data. The data receiver may include an input stage, bandpass filter circuitry, demodulator circuitry, and a data stream combiner. The data receiver may further include a power supply noise cancellation circuit. The power supply noise cancellation circuit may include an input stage, a baseband filter, a window filter, a down-sampler, and a difference filter. The power supply noise cancellation circuit may be coupled to the data stream combiner and is configured to mitigate power supply noise interference in the received data.

Abstract: A switching regulator sources a power rail and includes a top side or input rail side switch, a bottom side or ground side switch, and an inductor. When the switching regulator is disabled or generally turned off, a bottom side transistor in the bottom side switch is pulsed on and off, or held on, to drain or bleed the power rail to ground. When the bottom side transistor is off and if there is a voltage across the inductor from the power rail at a switching node, current flows through a body diode of the top side switch to the input rail of the switching regulator.

Abstract: A current output circuit includes a DC-DC power source, a current output unit, and a voltage detector. The DC-DC power source controls an output voltage. The current output unit operates at the output voltage of the DC-DC power source, generates a current signal based on a control instruction, and outputs the current signal to a load. The voltage detector holds the voltage of the load at the peak thereof and outputs the voltage of the load held at the peak to the DC-DC power source as a voltage signal. The DC-DC power source controls the output voltage on the basis of the voltage signal.

Abstract: An electronic device includes a first semiconductor die with a first FET having a drain connected to a switching node, a source connected to a reference node, and a gate connected to a first switch control node. The first die also includes a diode-connected bipolar transistor that forms a temperature diode next to the first FET. The temperature diode includes a cathode connected to the reference node, and an anode connected to a bias node. The electronic device also includes a second semiconductor die with a second FET, and a package structure that encloses the first and second semiconductor dies.

Abstract: A method for applying probability functions in real time includes receiving an input value. An optimized binary sequence is selected from a lookup table based on the received input value. The lookup table includes probability values of at least a part of a noise probability sequence. The input value is masked by a least significant bit of the selected optimized binary sequence to yield an output value. The selected optimized binary sequence is right shifted by one bit and the right shifted bit is carried over to a most significant bit position of the selected optimized binary sequence.

Abstract: An apparatus and method for reducing an output voltage ripple of a converter are provided. The apparatus may include a controller for controlling a converter, wherein the controller may include a clock generating circuit that generates a periodic clock signal containing periodic clock pulses, and a control circuit that causes the clock generating circuit to asynchronously initiate a clock pulse based on a difference between a feedback voltage of the converter and a reference voltage. The apparatus may also include an on-time modulation circuit which modulates the on-time based on the difference between the reference voltage and the sampled output voltage.

Abstract: Systems and methods for changing an output voltage of a voltage regulator are disclosed. A voltage change command that is serially transmitted from a control system to a voltage regulator is used to indicate that a change is output voltage is requested. The voltage change command is a serial stream that is less than a byte in length and includes a 1-bit write operation field, a 1-bit voltage change field and up to 6 bits of voltage change information.

Abstract: A programmable, high efficiency resonant converter includes a resonant cell including a first capacitor and a first inductor, the resonant cell having a voltage output VOUT coupled to the first capacitor with a first switch and a first feedback input coupled to the first inductor; and a hard switching cell including a second capacitor and a second inductor, the hard switching cell having a second feedback input coupled to the second capacitor and a voltage output VX coupled to the second capacitor and to the first feedback input of the resonant cell, whereby a negative current is applied to the resonant cell.

Abstract: An apparatus for predicting a future state of an electronic component is provided. The apparatus includes a measuring unit configured to measure a waveform of a signal related to the electronic component. Further, the apparatus includes a processing unit configured to calculate a predicted value of a characteristic of the electronic component based on a reliability model of the electronic component using the waveform of the signal.

Abstract: A buck-boost converter using a delta-sigma modulator (DSM) includes a buck-boost mode driving circuit configured to receive an input voltage and output an output voltage according to an operation mode, a mode controller configured to sense an output of the buck-boost mode driving circuit and determine the operation mode, and a gate driver configured to receive a mode determination signal for determining the operation mode from the mode controller and control switches included in the buck-boost mode driving circuit. Accordingly, output ripple characteristics thereof can be improved.

Abstract: Provided is a dual control apparatus and control method for a high voltage direct current (HVDC) system. The dual control apparatus comprises: a first controller and a second controller operated in a dual manner, the first controller and the second controller each including: a deviation calculation unit calculating a deviation between a target value and a control value; a PI controller performing proportional control and integral control on the deviation; a first buffer storing an error value for the integral control performed by the PI controller of a relevant one of the first and second controllers; and a second buffer storing an error value for the integral control performed by the PI controller of a remaining one of the first and second controllers.

Abstract: A multi-phase DC-DC power converter includes an error amplifier, a comparator, a phase selection circuit, a plurality of phase circuits and a PFM/PWM logic control circuit. The plurality of phase circuits are each associated with a phase of the multi-phase DC-DC power converter, each including a turn-on clock generation circuit, a first switching transistor, a second switching transistor, an output inductor, a zero-crossing detection circuit, and a control logic. The PFM/PWM logic control circuit is configured to output, in response to a PFM control signal and a control signal associated with switch signals, a first PFM control signal and a second PFM control signal to a first phase circuit and a second phase circuit of the plurality of phase circuits. The PFM/PWM logic control circuit enters a first phase, a second phase, and a third phase under a light load condition or a no load condition.

Abstract: A vehicle-mounted signal generation circuit for generating a PWM signal to be provided to a voltage conversion device that outputs an output voltage generated by converting an input voltage with an on/off operation of a switch according to the PWM signal, the vehicle-mounted signal generation circuit including an electronic control unit that is configured to: generate the PWM signal for the voltage conversion device; set a target duty ratio, which is a target value of a duty ratio of the PWM signal, based on an output from the voltage conversion device; set a cycle setting value of the PWM signal and to change the cycle setting value set according to passage of time; and set an output duty ratio, which is a value of a duty ratio based on the target duty ratio set and the cycle setting value set.

Abstract: In one embodiment, a host controller is to couple to an interconnect to which a plurality of devices may be coupled. The host controller may include: a first driver to drive first information onto the interconnect; and a first receiver to receive second information comprising parameter information of at least one of the plurality of devices from the interconnect. The host controller may further include an integrity control circuit to receive the parameter information of the at least one of the plurality of devices and dynamically update at least one capability of the host controller based at least in part on the parameter information. Other embodiments are described and claimed.

Abstract: A digital voltage regulator and a method to regulate an output voltage at an output node based on an input voltage is presented. The regulator has a driver stage with N driver slices, with N>1. Each of the N driver slices can be activated or deactivated individually. A driver slice comprises a current source to provide an output current component to the output node, if the driver slice is activated. Furthermore, the regulator has a control unit to activate a number n of the N driver slices, based on a deviation of a feedback voltage from a reference voltage, where the feedback voltage is dependent on the output voltage.

Abstract: One aspect of the invention provides a DC-to-DC driver including: a converter including an output configured to drive a load with an output current; and a feedback controller coupled to the converter. The feedback controller includes: a pulse-width modulator configured to output a first pulse-width modulated signal to the converter; a first switching mechanism coupled to the pulse-width modulator; a compensator having an output coupled to the first switching mechanism, the compensator configured to generate a first duty cycle control signal based on a comparison of the output current and a first reference voltage; and a sampler having an input coupled to the output of the compensator and an output coupled to the switching mechanism, the sampler configured to generate a second duty cycle control signal based on the first duty cycle control signal.

Abstract: A switched-mode power supply circuit that performs a burst-mode operation to stop and restart switching is provided, including: a power supply that supplies DC voltage; a switching element that controls the switching; a first comparator that detects an output voltage of the switched-mode power supply circuit; a storage element that stores an output of the first comparator according to a timing of controlling the switching; and a determination unit that measures a time period for which at least one of an output of the first comparator or an output of the storage element continues to be higher than the predetermined voltage, and if the measurement is not reset within a predetermined elapsed time, determines that the switched-mode power supply circuit is in an overvoltage state, wherein the switched-mode power supply circuit resets the measurement at a timing corresponding to a switching stop timing in the burst-mode operation.

Abstract: A method is provided. The method is executable by a processor of a battery management system. The method includes sending a first command signal to a multiplexer to cause the multiplexer to select a cell of a battery. The method also includes sending a second command signal to a current source to apply a current to the cell of the battery. The method also includes receiving measurement information based on the application of the current to the cell from a measurement circuit.

Abstract: A digital regulator includes a voltage comparison circuit, a counter, a decoder and a switch circuit. At an initialization phase, the voltage comparison circuit is configured to compare the reference voltage signal and a first signal to output a first level signal, and the counter is configured to initialize and output an initialization signal as a control signal according to the first level signal. At an operation phase, the voltage comparison circuit is configured to compare the reference voltage signal and an output terminal of the switch circuit to output a second level signal, and the counter is configured to count according to the second level signal and output the control signal. The decoder is configured to turn on the plurality of switch units according to the control signal from the counter.

Abstract: A power supply has a multi-level DC-DC converter and a battery pack with two or more cells provided in series. The switching DC-DC converter provides a regulated voltage at an output. The converter has an energy storage element. The switching regulator is designed to selectively operate in two or more different modes. It switches between a first mode where one cell is connected (between battery and inductor of the converter), and the converter functions like a single cell buck converter and a second mode where two cells are connected in series and the converter functions like a two series cell buck converter. In general, any number of cells and modes can be provided, with successive cells being connected in series in each mode.

Abstract: A semiconductor structure is provided. The semiconductor structure includes an insulating substrate including a first region and a second region; an engineered layer surrounding the insulating substrate; a nucleation layer formed on the engineered layer; a buffer layer formed on the nucleation layer; a first epitaxial layer formed on the buffer layer; a second epitaxial layer formed on the first epitaxial layer; an isolation structure at least formed in the second epitaxial layer, the first epitaxial layer and the nucleation layer, and located between the first region and the second region; a first gate, a first source and a first drain formed on the second epitaxial layer within the first region; and a second gate, a second source, and a second drain formed on the second epitaxial layer within the second region.

Abstract: A hybrid-mode boost power factor corrector includes an inductor, a switch unit, a diode unit, a current-detecting unit, and a control unit. The inductor is coupled to a DC input power source. The switch unit is coupled to the inductor and a ground. The diode unit is coupled to the inductor and the switch unit. The current-detecting unit receives an inductor current flowing through the inductor and provides a current detection signal corresponding to the inductor current. The control unit is coupled to the current-detecting unit to receive the current detection signal. When the hybrid-mode boost power factor corrector is operated in a light-load condition, the control unit samples a peak value of the current detection signal; when the hybrid-mode boost power factor corrector is operated in a heavy-load condition, the control unit samples an average value of the current detection signal.

Abstract: The lighting device includes a power conversion circuit and a control circuit. The power conversion circuit includes a high voltage side output terminal and a low voltage side output terminal to be connected to a light source, and a step-down chopper circuit. The control circuit performs a lighting operation of controlling the power conversion circuit to develop a DC output voltage between the high voltage side output terminal and the low voltage side output terminal. The control circuit starts a protective operation of limiting a current to be supplied to the light source when the output voltage is equal to or higher than a threshold value. The threshold value is in a range of 1.2 to 1.3 times a rated voltage of the light source.

Abstract: A power transformation system that may incorporate inductive-capacitive circuits configured to receive AC power and filter out output power, a voltage regulator (e.g., microprocessor), a transistor/switch configured to connect or disconnect the input inductive-capacitive circuit to or from, respectively, an output filter, and a level shifter configured to provide a control signal to the transistor to connect or disconnect the inductive-capacitive circuit via the transistor/switch, to or from, respectively, the output filter. The input inductive-capacitive circuit may provide power factor correction for the AC power. The level shifter may provide pulse width modulation control signals to the transistor/switch for connection or disconnection between the inductive-capacitive circuit and the output filter.

Abstract: A controller is configured to perform self-calibration to maintain approximately a desired switching frequency of a power converter. The self-calibration performed by the controller at least partially mitigates detrimental effects associated with variation in an actual switching frequency of the power converter from a designed switching frequency. The controller maintains approximately the desired switching frequency, in one example, in view of a delay inherent in the control by the controller of the power converter.

Abstract: Embodiments of the present disclosure relates to a method and device for balancing a supply current. In one embodiment, a current supply current for a load is detected. A first signal representing the current supply current is transmitted to a digital logic module. A second signal representing a maximum supply current and a third signal representing a minimum supply current are received from the digital logic module. A subsequent supply current for the load is determined based on the current supply current, the maximum supply current and the minimum supply current. By using the method and device according to the embodiments of the present disclosure, the supply currents of a plurality of power supply units for the load can be balanced a simple way with a low hardware cost.

Abstract: A regulator circuit that employs coupled inductors with on-time modulation is disclosed. The regulator circuit includes a driver circuit coupled via first and second inductors to a power supply node of a load circuit, and may charge the power supply node via the first inductor for a first charging period, and charge the power supply node via the second inductor for a second charging period. A control circuit may determine durations of the first and second charging periods using respective pluralities of currents.

Abstract: The present disclosure a switched-mode power supply using a reconfigurable delta-signal modulator (DSM). The switched-mode power supply comprises, a current sensing unit configured to determine an operation mode on the basis of a result of sensing a current of an output terminal; a compensator configured to output a compensation signal by amplifying a difference value between an output voltage and a reference voltage; a reconfigurable DSM configured to output a digital signal by noise-shaping the compensation signal; a power switch unit switched by the digital signal to output an output voltage; and an attenuator configured to supply a feedback voltage of the output voltage attenuated by a voltage divider to the compensator.

Abstract: A switching power supply circuit preventing coil current reversal, while minimizing a current consumption and speeding up a switching frequency is provided. The switching power supply circuit under a synchronous rectification system compares a feedback voltage and a reference voltage by a comparator and, based on the results of the comparison, alternately turns on and off a main switching element and a subordinate switching element to convert a direct current input voltage into a direct current output voltage. The circuit includes: an on-time generation circuit which, based on the input voltage and the output voltage, defines the on-times of the main switching element and the subordinate switching element; and a switching signal generation unit which, based on the output signals of the comparator and the on-time generation circuit, generates switching signals for controlling the on/off operation of the main switching element and the subordinate switching element.

Abstract: A zero static loadline switching regulator can include a controller having an integrating outer control loop that receives a first feedback signal corresponding regulator load and a reference signal and generates an intermediate feedback signal therefrom. The control circuit can also include an inner control loop that receives the intermediate feedback signal and a second feedback signal corresponding to a load on the regulator and generates an error signal used to control switching devices of the regulator. The control circuit can also include a transient response circuit configured to boost the error signal, for a predetermined time period after and responsive to a load transient. The error signal may be boosted to an intermediate value between its saturation level and its full scale level. The intermediate value may be predetermined or may be determined responsive to the magnitude of the load transient.

Abstract: A voltage driver includes a voltage input, a voltage regulation controller including an on/off input. The voltage regulation controller is configured to control a switching converter in a first mode, a second mode, and at least one additional mode. The switching converter is configured to operate as an open pass switch in the first mode, is configured to operate as a closed pass switch in the second mode, and is configured to operate as an overcurrent and overvoltage protection switch in the at least one additional mode. A discrete output driver control and monitoring circuit can be used to control the switching converter. The output driver control and monitoring circuit includes a controller coupled to a communication bus and is configured to provide high level control instructions to the communication bus.

Abstract: A device and method for controlling a power supply. The method includes: a first correction signal is generated according to a down-slope waveform and a second correction signal is generated according to an up-slope waveform, in a period of the switching element. Therefore, two kinds of corrections can be performed by using an oscillator, while the area of the circuit can be reduced and the cost of the integrated circuit can be decreased.

Abstract: The switching regulator has: a control unit for turning on/off an upper switch and a lower switch in a complementary manner in accordance with an output voltage; and a current extraction unit for extracting a constant current from a first end or a second end of an inductor. When under a light load, the control unit stops the switching control and fixes the upper switch and the lower switch in an off state. The constant current has positive temperature characteristics, wherein the value of the constant current is greater than or equal to a value obtained by subtracting leakage current of the lower switch from leakage current of the upper switch.

Abstract: A delay-time correction circuit delays an input signal for generating a pre-drive signal to a drive unit generating a drive signal. A transition-change sensor senses a transition change in one of a turn-on operation and turn-off operation. A correction-signal generator generates a correction signal in response to the transition change sensed by the transition-change sensor and to the input signal. A delay output unit generates an output signal corresponding to the pre-drive signal by delaying the input signal using the correction signal. The delay output unit delays the output signal that instructs the other of a turn-on operation and turn-off operation, from the input signal, in accordance with a length of a period for the transition change in the one of a turn-on operation and turn-off operation that is performed immediately before the other of a turn-on operation and turn-off operation.

Abstract: A power converter comprises an inductor coupled between a switching terminal and an output terminal of the power converter, a high side switching element coupled between an input terminal of the power converter and the switching terminal, a low side switching element coupled between the switching terminal and a reference terminal, and a feedback circuit comprising a continuous comparator unit configured to compare a ramp signal with an error signal using a first enable signal, a latched comparator unit configured to compare the ramp signal with the error signal using a second enable signal, wherein the error signal is based on a difference between a reference voltage and an output voltage at the output terminal of the power converter.

Abstract: A switching voltage regulator with variable minimum off-time. The value of the minimum off-time may depend on the voltage across a bootstrap capacitor. The value of the minimum off-time defines a minimum time for a switch to be open and to allow the bootstrap capacitor to charge.

Abstract: Voltage supply system with boost converter and charge pump. A voltage supply system can include a boost converter controllable to receive an input voltage at an input node and generate an output voltage when the output voltage is greater than or equal to the input voltage. The voltage supply system can include a charge pump controllable to receive the input voltage at the input node and generate the output voltage when the output voltage is less than the input voltage. The voltage supply system can further include a controller configured to receive a control signal and control the boost converter or the charge pump to generate the output voltage at an output node based on the control signal.

Abstract: A CPU determines an ON-time setting value with which the generating unit generates a PWM signal having an ON time that is closest to the ON time corresponding to a product of a reference period and a target duty cycle, and sets the determined setting value in the generating unit. The CPU divides the ON time of the PWM signal based on the determined ON-time setting value, multiplies, by N, the period that corresponds to a result of the division, and specifies a period settable value with which a PWM signal having a period that is closest to a result of the multiplication is generated. The CPU determines period setting values for N periods based on a quotient and a remainder obtained by dividing the specified settable value by N, and sets the determined setting values in the generating unit for each period of the PWM signal.

Abstract: Examples of an insulation system include a digital isolator for receiving supply of a first power supply on an input side thereof and receiving supply of a second power supply on an output side thereof, and an output adjusting unit for receiving supply of the second power supply, directly outputting an output of the digital isolator when a voltage of the second power supply is larger than a predetermined voltage, and stopping data output irrespective of the output of the digital isolator when the voltage of the second power supply is smaller or equal to the predetermined voltage.

Abstract: An exemplary voltage correction circuit includes a high-pass filter coupled with an integrated load, and an active clamp coupled with the high-pass filter in a closed-loop feedback arrangement. The high-pass filter includes an impedance network having a frequency response defining a lower frequency boundary of a passband of the voltage correction circuit, and the active clamp has a frequency response defining an upper frequency boundary of the passband of the voltage correction circuit. The active clamp is adapted to receive an input voltage proportional to a load transient within the passband and to generate an output current of the voltage correction circuit that cancels the effects of the load transient. A loop gain of the voltage correction circuit is greater than or equal to one within the passband and is less than one for frequencies lower than the lower frequency boundary and higher than the upper frequency boundary.

Abstract: A system and method of operating an automatic variable voltage transient response management system comprising a switchable power regulator circuit for receiving an input voltage and generating a plurality of output voltages for an information handling system the switchable power regulator circuit including a feedback loop for an adaptable error amplifier circuit, and a memory for storing a control circuit resistance table wherein each of the plurality of output voltages are associated in the control circuit resistance table with one of a plurality of total control circuit resistance values to adapt the error amplifier circuit feedback gain, and a digital core processor executing code instructions of the automatic variable voltage transient response management system to determine a requested regulated output voltage, identify one of the plurality of the total control circuit resistances associated with the requested regulated output voltage of the plurality of output voltages in the controller resistance tabl

Abstract: A switched-mode power converter includes timing control feedback loop circuits to minimize or eliminate the potential difference across a high-power switch and a low-power switch during their transitions times. A first feedback circuit compares the measured voltage across the high-power switch at the moment the high-power switch closes with the input voltage to the high-power switch to control a low-to-high delay time. A second feedback circuit compares the measured voltage across the low-power switch at the moment the low-power switch closes with the input voltage to the low-power switch to control a high-to-low delay time. A third feedback circuit compares the measured voltage across the low-power switch at the moment the low-power switch opens. The output of the third feedback circuit is provided as inputs to the first and second feedback circuits. The third feedback circuit also controls the frequency of the power converter.

Abstract: Apparatuses, systems and methods for regulating the output currents of a power supply at a target output current include a buck converter module operably connected to a power source and a load. A first switch couples the power source to the buck converter module during a first period of a given operating cycle, while the buck converter module stores and provides electrical power to the load. During a second period, a second switch may discharge, the electrical power stored during the first period. A current sensor senses the currents during at least one of the first period and the second period and, over the operating cycle, the switching times are adjusted so the average output current equals the target output current. Adjustments to the first and second period durations result in maximum and a minimum currents symmetrically disposed about the average current provided to the load during the operating cycle.

Abstract: A system having ring generation device being configured for phase inverted synchronous operation with a primary converter device. The primary converter device is operable to supply power to at least one device. The primary converter device produces a first electromagnetic interference during operation. The ring generation device produces a second electromagnetic interference that cancels the first electromagnetic interference. The primary converter device and the ring generator device are synchronized and operate in an inverse phase with each other to generally cancel the electro-magnetic interference signal created by the primary converter device. A ring generation charging switch and a ring generation discharging switch generally turns on and off alternately which matches a charging and discharging of a primary switching node.

Abstract: A power converter comprises an inductor coupled between a switching terminal and an output terminal of the power converter, a high side switching element coupled between an input terminal of the power converter and the switching terminal, a low side switching element coupled between the switching terminal and a reference terminal, and a feedback circuit comprising a continuous comparator unit configured to compare a ramp signal with an error signal using a first enable signal, a latched comparator unit configured to compare the ramp signal with the error signal using a second enable signal, wherein the error signal is based on a difference between a reference voltage and an output voltage at the output terminal of the power converter.

Abstract: A method of controlling the stability of a power converter in a closed-loop control system. The method includes inputting a variable to be controlled such as an output voltage of the power converter to a compensator or mathematical function for processing; determining, using the compensator, an error signal representative of a difference between the output voltage and a reference voltage; evaluating an energy content in a short-time Fourier transform spectrogram of the error signal from the compensator and/or evaluating the sinusoidality shape of the error signal; updating a transfer function of the compensator and other system parameters in accordance with the energy content or sinusoidality.

Abstract: A circuit, comprising a trapezoidal generator that comprises digital logic configured to couple at a first input to a loop controller and at a second input to a buck-boost region detector and a driver coupled to an output of the digital logic and configured to couple to at least one power transistor of a power converter.

Abstract: A digital constant on-time controller adaptable to a direct-current (DC)-to-DC converter includes a current sensing circuit that senses stored energy of the DC-to-DC converter, thereby generating a sense voltage; an offset cancellation circuit coupled to receive the sense voltage, thereby generating an offset-removed sense voltage according to a valley voltage of the sense voltage; a comparator that compares the offset-removed sense voltage with a reference signal; and a pulse-width modulation (PWM) generator that generates a switch control signal according to a comparison result of the comparator.

Abstract: Disclosed are methods and apparatus for a lighting unit that may adaptably achieve a plurality of lighting effects. A plurality of LEDs (541A-G, 641) producing a light output having at least one adaptable light output characteristic may be provided and controlled by a controller 650 electrically coupled to the plurality of LEDs (541A-G, 641). The controller may control the at least one adaptable light output characteristic in accordance with received lighting configuration data that is specific to a particular lighting implementation.

Abstract: In an embodiment, a system may support a “coast mode” in which the power management unit (PMU) that supplies the supply voltage to an integrated circuit is disabled temporarily for certain modes of the integrated circuit. The integrated circuit may continue to operate, consuming the energy stored in capacitance in and/or around the integrated circuit. When coast mode is initiated, a time interval for coasting may be determined. When the time interval expires, the PMU may re-enable the power supply voltage.