Abstract: A regulator includes: an ADC for detecting a change in an output voltage and outputting an error code; a control signal generation unit for generating a proportional control signal, integral control signals, a counting signal, and an error sign signal based on the error code; a proportional control unit for shifting the error code based on a proportional gain factor, and outputting a first control signal by synchronizing the shifted error code with the proportional control signal; an integral control unit for shifting the integral control signals based on the counting signal, shifting the shifted signals based on an integral gain factor to generate integral pulse signals, and outputting second control signals by controlling a pre-stored code value based on the integral pulse signals and the error sign signal; and a driving unit for outputting first and second currents in response to the first and second control signals.

Abstract: An apparatus for providing surge-tolerant power to an appliance is provided. The apparatus includes an input circuit for receiving a source of DC voltage. The apparatus also includes a pass device having a first terminal, a control terminal and a second terminal. Further, the apparatus includes a first means for providing an output voltage based on an input of the pass device. The apparatus also includes a second means for applying a voltage to a control terminal of the pass device based on the output voltage. The voltage is sufficient to put the pass device into a low impedance state between the first terminal and the second terminal thereof.

Abstract: A power supply system includes a first converting stage, a second converting stage, and a third converting stage. The first converting stage is configured to generate a first voltage according to a first input voltage. The second converting stage is coupled to the first converting stage in series, and includes a first non-regulated power converter and a second non-regulated power converter. The first non-regulated power converter is configured to generate a second voltage according to the first voltage. The second non-regulated power converter is configured to generate a third voltage according to the second voltage. The second voltage is higher than the third voltage, and a varying range of the second voltage is wider than a varying range of the third voltage. The third converting stage is configured to generate a first output voltage according to the third voltage.

Abstract: A differential probe provides a probe input which comprises two inputs for recording a first and second input signal. The differential probe further provides a first amplifier which is connected to the two inputs. The differential probe additionally provides a compensation device, which generates and superposes on the first and second input signal a differential offset signal. The compensation device also generates a common-mode offset signal which is independent of the differential offset signal.

Abstract: A system for powering and controlling a backlit electronic display where redundancy is used to provide two independent paths from a pair of power sources to the backlight. Further, two independent paths are also used from a pair of power sources to the electronic display. If any one of the paths were to fail or begin to degrade in performance, the system contains monitoring devices which can direct another path to be used by the system. Two separate control circuits for the electronic may be used so that either one may be used to control the electronic display if one were to fail. Two separate temperature sensors and luminance sensors may also be used to increase the durability of the system.

Abstract: A light emitting assembly is described. In one embodiment, one or more light emitting diode (LED) devices and one or more microcontrollers are bonded to a same side of a substrate, with the one or more microcontrollers to switch and drive the one or more LED devices.

Abstract: A current transformer arrangement, and method, include a current sensor for producing a sensor output voltage that is proportional to the input current flowing in a conductor; a first processing branch including a voltage calculating device for calculating the effective voltage value of the sensor output voltage; a second processing branch including a polarity detecting device having an input terminal connected with the current sensor output terminal to produce a polarity signal having one polarity when the conductor input current is either an alternating current, a hybrid current, or a direct current flowing in one direction, and the opposite polarity when the conductor input current is a direct current flowing in the opposite direction; and a multiplier device for modifying the effective voltage value to produce a signed effective voltage having a polarity corresponding with the polarity of the polarity signal. A modifying circuit modifies the signed effective voltage.

Abstract: A controller for a multiphase converter comprises a first stage controller for producing a first gate drive signal to turn on a first power transistor of a first boost converter; a delay element configured to produce a delayed signal by delaying the first gate drive signal by half a cycle length; a time difference detection element configured to: output a turn on command based on a zero crossing detection (ZCD) signal indicating that one or more zero current conditions of a second boost converter of the multiphase converter are met and the delayed signal; and a second stage controller configured to assert a second gate drive signal to turn on a second power transistor of the second boost converter based on the turn on command.

Abstract: A power supply is configured to automatically and rapidly switch from a voltage maintaining mode to a current limiting mode (at times that are unpredictable from a point of view of the power supply) when supplying replenishing current to a combination of a power insulated gate switching device and power capacitor that drive relatively large surges of pulsed power through a load such as a laser emitter of a Time of Flight (TOF) determining system. The current limiting mode is automatically activated by the start of each train of large surges of pulsed power and it replenishes charge to the power capacitor on a time averaged basis such that the capacitor develops a temperature appropriate voltage for providing the time averaged current to the power insulated gate switching device and its load and causing the load (e.g., laser) to output a desired amount of output power.

Abstract: This invention is an electronic circuit with a low power retention mode. A single integrated circuit includes a circuit module and a droop switch circuit supplied by a voltage regulator. In a normal mode a PMOS source-drain channel connects the voltage regulator power to the circuit module power input or isolates them dependent upon a power switch input. In a low power mode a second PMOS connected between the first PMOS gate and output diode connects the first PMOS. This supplied the circuit module from the voltage regulator power as reduced in voltage by a diode forward bias drop. This lower voltage should be sufficient for flip-flops in the circuit module to retain their state while not guaranteeing logic operation. There may be a plurality of chain connected droop switch each powering a corresponding circuit module.

Abstract: To provide a switching regulator equipped with an on-time control circuit small in power consumption. An on-time control circuit is configured to be equipped with switches each turned on/off by a signal controlling on and off of a switching element and be turned off during an off-time of the switching element.

Abstract: A controller for a switched mode power converter includes limit-to-valley ratio circuitry, an on-time generator, and a drive circuit. The limit-to-valley ratio circuitry is coupled to generate a ratio signal in response to sensing a switch current of a switch that regulates an output of the switched mode power converter. The ratio signal is representative of a time ratio between a first length of time that the switch current is at or above a switch current limit and a second length of time that the switch current is at or below a switch current valley that is a portion of the switch current limit. The on-time generator is coupled to vary a switch on-time signal in response to receiving the ratio signal. The drive circuit is coupled to output a drive signal to a control terminal of the switch in response to receiving the switch on-time signal.

Abstract: In one example, a method for compensating for a temperature effect during operation of a voltage regulator circuit includes applying a load current at an output of the voltage regulator circuit, measuring a first output voltage at the output, measuring a reference current or voltage, increasing the load current, measuring a change in the reference current or voltage corresponding to the increased load current, measuring a second output voltage when the measured change in the reference current exceeds a threshold, and determining a temperature coefficient (TC) value based on the measured second output voltage.

Abstract: A system for powering and controlling an LED-backlit liquid crystal display (LCD) where redundancy is used to provide two independent paths from a pair of power supplies to the LED backlight. Further, two independent paths are also used from a pair of power supplies to the LCD. If any one of the paths were to fail or begin to degrade in performance, the system contains monitoring circuits which can direct another path to be used by the system. Two separate control circuits for the LCD may be used so that either one may be used to control the LCD if one were to fail. Two separate temperature sensors and luminance sensors may also be used to increase the durability of the system.

Abstract: A controller for controlling a power supply includes a feedback signal generator to generate a feedback signal representative of an output current in response to an output sense signal. A state selector circuit receives the feedback signal and outputs a digital state signal to set an operational state of a switch of the power supply. The state selector circuit adjusts the digital state signal in response to feedback information at an end of a feedback period. A driver circuit receives the digital state signal and generates a drive signal in response to the digital state signal. The drive signal drives switching of the switch in accordance with the operational state of the switch.

Abstract: A controller for voltage regulators providing power to computer processors may control the number of active phases of each voltage regulator according to a determined electrical current demand from the processor. By relying on electrical current demand rather than a P-state, the latter generally indicating a power conservation status, improved regulator efficiencies may be had, in particular responding to situations where low current demand occurs under heavy processor demand because of C-state variations.

Abstract: The present invention relates to a voltage converter based on a switching regulator, and more particularly, to systems, devices and methods of dynamically controlling an output of the voltage converter to rapidly transition between different power supply voltages as required in many electronic devices. The switching regulator generates an output supply voltage that tracks a voltage originally provided by an internal DAC. During the supply voltage variation, a step control signal is provided to introduce a supplemental voltage step into the reference voltage before the reference voltage is used to generate the output supply voltage. The switching regulator is thereby overdriven under this supplemental voltage step, enhancing the slew rate and the settling time of the output supply voltage to meet stringent requirements imposed by many electronic devices.

Abstract: There is provided a liquid discharging apparatus including: a modulation portion which generates a modulation signal pulse-modulated from a source signal; a ground terminal which electrically connects the modulation portion to a ground potential; a transistor which generates an amplification modulation signal amplified from the modulation signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; a feedback circuit which generates a feedback signal based on the driving signal, and sends back the feedback signal to the modulation portion via a feedback terminal; and a piezoelectric element which is displaced as the driving signal is applied, in which the modulation portion, the ground terminal, and the feedback terminal are formed on the same semiconductor substrate, and in which, in a plan view, the ground terminal and the feedback terminal are disposed being adjacent to each other.

Abstract: A current mode converter includes a converter stage comprising a first switch, a second switch, an inductor, and a capacitor, and a digital-to-analog converter configured to convert a digital target current signal to an analog current signal. The current mode converter further includes a slope compensation circuit coupled to the digital-to-analog converter and is configured to convert the analog target current signal to a slope compensated analog target signal. A comparator is coupled to the converter stage and the slope compensation stage and is configured to generate and output a signal when a value of an actual analog signal is equal to a value of the slope compensated analog target signal.

Abstract: A switching regulator using current mode control and adaptive slope compensation includes a DC correction circuit to introduce a DC correction signal to cancel the DC offset error generated by the slope compensation signal. In some embodiments, the DC correction signal is a function of the input voltage and the output voltage and is applied in response to the slope compensation signal being applied. In one embodiment, the DC correction signal is a linear function of the input voltage and the output voltage.

Abstract: A power control server outputs power through a power line, outputs a high-frequency signal and communicates with an electronic device to which the power is output, through the power line, and reads out device information including at least identification information that identifies the electronic device, obtains user information related to a user who uses the electronic device, and transmits the obtained user information and the read out device information to an information management server. The information management server receives the user information and the device information transmitted from the power control server, and performs user registration related to the electronic device identified by the identification information included in the device information, based on the received user information. The present technology can be applied to a power supply control system that supplies the power to an electronic device, for example.

Abstract: In one embodiment an apparatus includes a multiplicity of processor components; one or more device components communicatively coupled to one or more processor components of the multiplicity of processor components; and a controller comprising logic at least a portion of which is in hardware, the logic to schedule one or more forced idle periods interspersed with one or more active periods, a forced idle period spanning a duration during which the multiplicity of processor components and the one or more device components are simultaneously placed in respective idle states that define a forced idle power state during isolated sub-periods of the forced idle period. Other embodiments are disclosed and claimed.

Abstract: This invention is an electronic circuit with a low power retention mode. A single integrated circuit includes a circuit module and a droop switch circuit supplied by a voltage regulator. In a normal mode a PMOS source-drain channel connects the voltage regulator power to the circuit module power input or isolates them dependent upon a power switch input. In a low power mode a second PMOS connected between the first PMOS gate and output diode connects the first PMOS. This supplied the circuit module from the voltage regulator power as reduced in voltage by a diode forward bias drop. This lower voltage should be sufficient for flip-flops in the circuit module to retain their state while not guaranteeing logic operation. There may be a plurality of chain connected droop switch each powering a corresponding circuit module.

Abstract: The embodiments discussed herein relate to systems, methods, and apparatus for executing a pulse frequency modulation (PFM) mode of a boost converter in order to ensure that a switching frequency of the boost converter is a above an audible frequency threshold. In this way, a user operating a display device that is controlled by the boost converter will not be disturbed by audible noises generated at the display device. The PFM mode enforces an audible frequency threshold by using control circuitry designed to increase or decrease the frequency of a pulse signal depending on how the frequency of the pulse signal changes over time. The control circuitry can apply an additional load to the boost converter in order to increase the frequency of the pulse signal when the frequency is approaching the audible frequency threshold.

Abstract: In an embodiment, a processor includes voltage calculation logic to calculate a plurality of maximum operating voltage values each associated with a number of active cores of the plurality of cores, based at least in part on a plurality of coefficient values. In this way, the processor can operate at different maximum operating voltages dependent on the number of active cores. Other embodiments are described and claimed.

Abstract: An apparatus comprises an output port for a circuit load, a first input port for an energy harvest source, an input/output port a second energy source, a first circuit path from the energy harvest source to the second energy source at the input/output port and to the variable load at the output port, a second circuit path from the second energy source to the output port, a cold start circuit that produces a first voltage level at the output port by charging a capacitor at the output port using energy of the energy harvest source, and a main converter circuit that produces a second regulated voltage level at the input/output port using energy of the energy harvest source when the voltage at the output port capacitor is above a specified voltage value and uses the energy of the capacitor at the output port during startup of the main converter circuit.

Abstract: In one embodiment, the present invention includes a multicore processor with a power controller to control a frequency at which the processor operates. More specifically, the power controller can limit a maximum operating frequency of the processor to less than a configured maximum operating frequency to enable a reduction in a number of frequency transitions occurring responsive to power state events, thus avoiding the overhead of operations performed in handling such transitions. Other embodiments are described and claimed.

Abstract: Voltage regulators in a current share arrangement may provide a total current to a common load, and may be simultaneously turned on to ramp up member currents. Each voltage regulator may provide a respective member current in the current share configuration. A target current value may be determined from a cycle-averaged current value of the member currents and a voltage error value of the voltage regulator, and each member current may be ramped to the target current value instead of the cycle-averaged current value when the voltage regulators are turned on, resulting in more stable and balanced current ramping. A predictive multi-phase digital controller may therefore operate according to a target current determined based on a measured or inferred inductor current and an error voltage. Pulse-width, pulse position and pulse frequency (adding or skipping pulses) may be calculated according to the operation of the predictive multi-phase digital controller.

Abstract: A radio including a switched mode power supply configured to shift its operating frequency to a frequency which alleviates electromagnetic interference with a radio frequency to which the radio is or will be tuned.

Abstract: An electronic device and a method for supplying power are provided. The electronic device includes a power supply, a central processing module, at least two load power supply circuits including a capacitor, at least one switch and at least one feedback resistor unit. The switch is connected with the power supply and the central processing module, configured to be turned on or off according to a control signal output by the central processing module; the feedback resistor unit is connected with the switch and a load, configured to sample the load when the switch is turned on and feed back a sampled voltage, to the power supply through the switch, the power supply supplies power to the load; the capacitor is connected with the switch and the load, configured to be charged when the switch is turned on, or supply power to the load when the switch is turned off.

Abstract: Drivers for driving light circuits with light emitting diodes include an isolation circuit with a primary part and a secondary part and a guiding circuit for guiding common mode surge signals to a reference potential. The isolation circuit may be configured to guide a first part of the common mode surge signal away from the light circuit, and the guiding circuit may be configured to guide a second part of the common mode surge signal away from the light circuit, the second part being smaller than the first part. The guiding circuit may include one or more capacitors for connecting one or more terminals of the secondary part to the reference potential, where the value(s) of the one or more capacitors is/are larger than values of a parasitic capacitance of the isolation circuit.

Abstract: In one example, a method includes receiving a voltage value and comparing the voltage value to a reference voltage value to determine a delta voltage value. The method may also include determining a reference current value based on the delta voltage value. The method may also include receiving a current value and comparing the current value to the reference current value to determine a delta current value. The method may also include determining a threshold value based on the delta current value, where the threshold value is used to define a control signal that controls a power converter.

Abstract: The present document relates to a current sensing and/or control circuit with reduced sensing errors. A current control circuit for controlling a load current into an electronic device is described. The current control circuit comprises an array of control transistors configured to adjust the load current provided at an output of the array of control transistors. The load current is drawn from a power supply at an input voltage. Furthermore, the power supply is coupled to an input of the array of control transistors. The circuit further comprises a reference transistor coupled to the power supply at an input of the reference transistor and a reference current source configured to draw a reference current at an output of the reference transistor.

Abstract: A load-sensing voltage charge pump system may include a plurality of reference voltage inputs including a target voltage input. The system may also include a plurality of voltage charge pump segments equal in number to the plurality of reference voltage inputs. A voltage charge pump segment may include: a regulator that receives a reference voltage, and a voltage charge pump that outputs a current to a load at a sensed voltage. The regulator may enable each of the voltage charge pump segments, when the sensed voltage is less than or equal to the one of the reference voltages and the target voltage. The system may include a boosted line connected in parallel to an output of each of the voltage charge pump segments. The boosted line may receive the current at the sensed voltage from each of the voltage charge pump segments that is enabled.

Abstract: In accordance with one embodiment of the present disclosure, a multi-phase voltage regulator may comprise a plurality of phases, each phase configured to supply electrical current to one or more information handling resources electrically coupled to the voltage regulator. A controller may be electrically coupled to the plurality of phases. The controller may designate at least one of the plurality of phases as a first state phase, and designate each of the plurality of phases not designated as a first state phase as a second state phase. The controller may alternate the designation of at least two of the plurality of phases between a first state phase and a second state phase. Each first state phase may be configured to supply a first electrical current regardless of electrical current demand. Each second state phase may be configured to supply a second electrical current based on the current demand.

Abstract: Provided are a digital current equalizing device, an analog current equalizing device, a current equalizing method and a system. The digital current equalizing device comprises: an output current sampling amplifying module (102), a digital processing module (104), and a main power frequency conversion module (106). An input terminal of the output current sampling amplifying module (102) connects to an output loop of a power supply, and an output terminal of the output current sampling amplifying module (102) connects to a current equalizing bus through a resistor R0, wherein the digital processing module (104) is configured to adjust an output voltage reference signal Vr according to a difference between an output voltage signal V2 of the output current sampling amplifying module (102) and an voltage signal Vbus of the current equalizing bus, and the main power frequency conversion module (106) is controlled to adjust the voltage according to the adjusted output voltage reference signal Vr?.

Abstract: In an embodiment, a circuit includes a Direct Current (DC)-DC buck-boost converter and a controller. The controller includes an error amplifier configured to receive a feedback signal responsive to an output signal of the buck-boost converter. The error amplifier is configured to compare the feedback signal and a reference signal to generate an error signal. The controller includes a modulator circuit that is configured to receive the error signal and compare the error signal with a periodic ramp signal to generate a modulated signal. The controller further includes a digital logic block to generate switching signals in response to the modulated signal that is fed to the buck-boost converter to control the output signal of the buck-boost converter. The controller includes a capacitance multiplier circuit coupled to the output of the error amplifier to configure a dominant pole so as to compensate the buck-boost converter.

Abstract: A loop controller includes an error amplifier configured to receive an output of a controlled process and further configured to receive a reference input; and an asymmetric compensator. The asymmetric compensator includes a high pass filter configured to receive an amplified version of the reference input and output a filtered reference; and an asymmetric impedance configured to receive an amplified version of the filtered reference and output a compensation signal. The error amplifier is further configured to sum the compensation signal and the output of the controlled process, and provide an error signal based on a difference between the sum and the reference input. The compensation signal includes a first gain for a rising transition of the controlled process output and a second gain for a falling transition of the controlled process output.

Abstract: In various embodiments, a control system for an electronic circuit iteratively applies voltage to and senses current from a load to regulate operation of the load.

Abstract: A power supply apparatus capable of outputting a predetermined voltage or a predetermined electrical current selectively is provided, including a voltage level setter to determine an output level of a voltage or an electrical current according to an external signal, a constant voltage feedback unit to correct an output value of the voltage level setter so as to output a constant voltage of the output level to a load terminal, a constant current feedback unit to maintain the external signal constantly and correct an output value of the voltage level setter so as to output a constant current of the output level to the load terminal, a switch to connect the voltage level setter with the constant voltage feedback unit or the constant current feedback unit selectively, and a controller to control the switch to output the constant voltage or the constant current selectively according to a state of the load terminal.

Abstract: A battery discharge circuit has a switching circuit and a controller. The switching circuit is coupled between a battery and a load. The controller is configured to generate a control signal to control the switching circuit. When the battery voltage drops below a first reference voltage, the controller adjusts the control signal to regulate the battery voltage to be equal to the first reference voltage.

Abstract: The present invention discloses an adaptive phase-shifted synchronization clock generation circuit and a method for generating phase-shifted synchronization clock. The adaptive phase-shifted synchronization clock generation circuit includes: a current source generating a current which flows through a node to generate a node voltage on the node; a reverse-proportional voltage generator coupled to the node for generating a voltage which is reverse-proportional to the node voltage; a ramp generator receiving a synchronization input signal and generating a ramp signal; a comparator comparing the reverse-proportional voltage to the ramp signal; and a pulse generator for generating a clock signal according to an output from the comparator.

Abstract: A method for regulating an electrical power source includes the steps of detecting for one or more predetermined conditions associated with a load power of the electrical power source, whereupon the one or more predetermined conditions is detected, acquiring electrical characteristics of the electrical power source to determine a global maximum load power value arranged to approximate a true maximum load power of the electrical power source, and processing the global maximum load power value to determine a local maximum load power value of the electrical power source, wherein the local maximum load power value is arranged to be more accurate in approximating the true maximum load power of the electrical power source when compared with the global maximum load power value.

Abstract: A controller for a multiphase power converter has a plurality of DC to DC converters coupled in parallel between a voltage source and a single output terminal is provided. The controller includes a voltage sensing circuit coupled to the output terminal. An internal pulse generating circuit is couplable to the voltage sensing circuit for generating an internal pseudo-pulse width modulated signal. An ON time signal distribution circuit is couplable to an output of the internal pulse generating circuit and couplable to driver circuit for driving each of the plurality of DC to DC converters. A multiphase power converter and method also disclosed.

Abstract: The disclosure relates to an electric power conversion apparatus, and capable of determining a minimum output voltage of a boost converter based on a voltage of the grid, and comparing the minimum output voltage of the converter with an input voltage of the converter, and controlling the operation of the converter based on the comparison result, thereby reducing the unnecessary operation and switching loss of the converter, the electric power conversion apparatus according to the invention comprises a converter; and a control unit configured to detect a grid voltage to determine a minimum output voltage of the converter based on the grid voltage, and control the operation of the converter based on an input voltage of the converter and the determined minimum output voltage.

Abstract: A voltage monitoring circuit includes: a ripple filter configured to output an output voltage from which a ripple component included in an input voltage, which is input from a voltage source, has been removed; a load configured to operate with the output voltage as a supply voltage and output a first signal through the operation; a comparator configured to compare an electric potential of the output voltage with an electric potential of the first signal and output a second signal when the electric potential difference is equal to or less than a predetermined threshold value; and a control circuit configured to reduce the electric potential of the first signal under the condition that the second signal is input thereto.

Abstract: A constant on-time control switching converter with DC calibration is disclosed. A current flowing into a capacitor of a DC calibration circuit is reduced by introducing a transconductance amplifier and a resistor. Thus, the equivalent capacitance of the capacitor is magnified, which allows the user to integrate a capacitor with smaller capacitance to realize DC calibration.

Abstract: A controller (100; 200) for controlling a process variable (202) comprises an input interface (102) configured to receive a feedback signal indicative of an error between a process variable (202) to be controlled and a setpoint (104) for the process variable. At least a first integrator is (108) configured to derive an accumulated error signal using an integrator input signal depending on the feedback signal and at least one resonator having a predetermined resonance frequency is configured to provide a resonator output signal using a resonator input signal depending on the feedback signal. An output interface is (130) configured to provide a manipulation signal for influencing the process variable (202), the manipulation signal being derived using the accumulated error signal and the resonator output signal.

Abstract: An integrated circuit includes an operational circuit module receiving a supply voltage from a voltage regulator external to the integrated circuit, and an adaptive voltage scaling module to adjust the supply voltage based on performance characteristics of the operational circuit module. The adaptive voltage scaling module can include a performance monitoring module disposed on the integrated circuit and configured to generate at least an indicator corresponding to at least one performance characteristic of the operational circuit module. The adaptive scaling module can include a voltage requirement determination and voltage feedback generator module disposed on the integrated circuit and coupled to the performance monitoring module. The voltage requirement determination and voltage feedback generator module is configured to output a feedback voltage signal having a voltage level as a function of at least the indicator.

Abstract: A voltage conversion circuit comprises a first and a second output (O1, O2) which are configured to have an electric load (LD) connected therebetween, wherein an output signal between the first and a second output (O1, O2) is generated in response to a pulse-width modulated clock signal (PWM). The circuit further comprises a forward branch (FWD) being configured to generate an output voltage (VDC) at the first output (O1) depending on a control signal. A feedback branch (FBK) comprises a comparison circuit (CC) being configured to generate the control signal.