Abstract: Embodiments disclosed herein include two stage voltage regulators for electronic systems. In an embodiment, a voltage regulator comprises a switched capacitor voltage regulator (SCVR). In an embodiment, the SCVR receives a first voltage as an input and outputs a plurality of SCVR output voltages. In an embodiment, the voltage regulator further comprises a low-dropout (LDO) regulator. In an embodiment, the LDO regulator receives one or more of the plurality of SCVR output voltages as LDO input voltages, and where the LDO regulator outputs a second voltage.

Abstract: A power-management integrated circuit (PMIC) is installed on a memory module to optimize power use among a collection of memory devices. The PMIC includes external power-supply nodes that receive relatively high and low supply voltages. Depending on availability, the PMIC uses one or both of these supply voltages to generate a managed supply voltage for powering the memory devices. The PMIC selects between operational modes for improved efficiency in dependence upon the availability of one or both externally provided supply voltages.

Abstract: A protection circuit against connection of an incorrect power supply, applied in a server system, includes a mainboard circuit, the protecting circuit includes at least two power sources, a comparing module, and a protecting module. The comparing module determines whether the multiple power sources are the same in current and voltage. When the power sources are determined to be the same, the comparing module outputs a first signal, the protecting module connects the at least two power sources to the mainboard circuit accordingly. If the at least two power sources are determined as not being the same, the comparing module outputs a second signal, the protecting module disconnects the multiple power sources and the mainboard circuit accordingly.

Abstract: A regulating circuit including a first direct current (DC)-DC converter configured to apply a first supply voltage to a first node in a first mode and apply the first supply voltage to a second node in a second mode, a first low drop output (LDO) regulator connected to the first node, the first LDO regulator configured to provide an output voltage to an output node by regulating the first supply voltage of the first node, and a second LDO regulator connected to the first node, the second LDO regulator configured to provide an auxiliary current to the first node in the second mode may be provided.

Abstract: An electronic device includes an internal voltage driving circuit configured to drive an internal voltage to one of first and second power supply voltages based on a driving control signal depending on an operating frequency. The electronic device includes a driving control signal generation circuit configured to generate the driving control signal that sets a level of the internal voltage, by detecting the level of the internal voltage.

Abstract: A 3-level ripple quantization scheme provides power transistor (MOS) strength-tuning mechanism focused on the transient clamp period. The 3-level ripple quantization scheme solves the digital low dropout's (D-LDO's) tradeoff between silicon area (e.g., decoupling capacitor size), quiescent power consumption (e.g., speed of comparators), wide load range, and optimal output ripple. The 3-level ripple quantization scheme eliminates oscillation risk from either wide dynamic range or parasitic by exploiting asynchronous pulse patterns. As such, ripple magnitude for both fast di/dt loading events and various steady-state scenarios are shrunk effectively, resulting significant efficiency benefits.

Abstract: A power system may include a plurality of voltage regulator phases each configured to generate an output voltage at its output from an input voltage, a switched capacitor power converter sharing its output with the outputs of the plurality of voltage regulator phases and configured to, when enabled, generate the output voltage at its output from the input voltage, and a power controller configured to selectively enable and disable the switched capacitor power converter based on electrical current requirements of the power system.

Abstract: A low dropout regulator includes a first stage that generate a first output voltage and a second stage that generates a second output voltage different from the first output voltage. The first stage and the second stage are coupled in parallel to a node, the stages are selectively controlled respective first and second output signals based on different conditions. One condition may be operation of a load in one or more predetermined modes. Another condition may be transition between modes. Selective control of the first stage during a mode transition may reduce voltage undershoot or voltage overshoot in the load.

Abstract: A simultaneous low quiescent current and high performance low dropout (LDO) voltage regulator is disclosed. In some implementations, the LDO voltage regulator includes a first and a second pass transistors configured to receive an input voltage (Vin). The LDO voltage regulator further includes an error amplifying module having a first output, a second output, a first input, and a second input. The error amplifying module can further include a first output stage configured to drive the gate of the first pass transistor during a high performance (HP) mode, and a second output stage configured to drive the gate of the second pass transistor during the HP mode and during a low power (LP) mode.

Abstract: A system includes an input voltage source, a linear regulator coupled to the input voltage source, and a load coupled to an output of the linear regulator. The linear regulator includes an error amplifier coupled to a control terminal of a switch; and a control circuit coupled to the error amplifier and configured to provide a reference voltage to the error amplifier. The control circuit includes a mode selection circuit with a slow loop configured to sample a load current and with a fast loop configured to detect an output voltage error signal. The mode selection circuit is configured to adjust a mode of the control circuit between a continuous power mode and a duty cycle power save mode based on the sampled load current and the output voltage error signal.

Abstract: An embodiment device includes a first MOS transistor and a first resistor in series between first node and second nodes, the first resistor being connected to the second node; a second MOS transistor and a second resistor in series between the first and second nodes, the second resistor being connected to the second node and the gates of the first and second transistors being coupled to each other; an operational amplifier including a first terminal connected to a node of connection of the first resistor to the first transistor, a second terminal, and an output terminal coupled to the gate of the first transistor; and a circuit configured to supply a set point voltage to the second terminal of the amplifier.

Abstract: A power supply unit, preferably for a power analyzer, a power analyzer comprising a power supply unit and a method for operating a power supply unit, wherein the power supply unit comprises a feedback control unit controlling the output level of the voltage, the current or the power supplied to output terminals of the power supply unit on a preset value, means for sensing the actual output level of the voltage, the current or the power, respectively, and sending a signal representing the sensed output level to said feedback control unit, and means for detecting oscillations in the actual output of the voltage, the current or the power, respectively and for issuing an oscillation detection signal to the feedback control unit, wherein the feedback control unit is arranged to adapt at least one parameter value of the feedback control in response to a value of the oscillation detection signal.

Abstract: A ground leakage current power supply is provided that includes a hot node coupled to a hot wire of an AC power source, and an earth ground node coupled to an earth ground, where a neutral wire is not present. The supply also has an energy storage component and a low voltage power supply. The energy storage component is coupled in series to a current limiter that is coupled to receive rectified power from the AC power source, where the current limiter enables the energy storage component to charge to a voltage value at a rate that limits ground leakage current. The low voltage power supply includes a linear voltage regulator and is coupled to the energy storage component and to a return node, the return node providing a return reference voltage, and is configured to receive the voltage value, and is configured generate a regulated output voltage that is referenced to the return reference voltage.

Abstract: An integrated circuit (IC) is disclosed that includes a load circuit, and a voltage regulator circuit configured to provide a load voltage and a load current to the load circuit. The voltage regulator circuit can regulate the load voltage based on the load current.

Abstract: A circuit comprising a NMOS having a gate coupled to a first node and a source terminal coupled to a second node, a second NMOS having a gate coupled to the second node and a source terminal coupled to an output node, a PMOS having a gate coupled to a third node, a drain terminal coupled to a fourth node, and a source terminal coupled to a fifth node, and a second PMOS having a gate coupled to the fourth node, a drain terminal coupled to the output node, and a source terminal coupled to the fifth node. The circuit also includes a voltage protection sub-circuit coupled to the first node, a fast turn-off sub-circuit coupled to the output node, a fast turn-on sub-circuit coupled to the third and fourth nodes, and a node initialization sub-circuit coupled to the first, second, and fourth nodes and the fast turn-on sub-circuit.

Abstract: There is provided a DC/DC converter that can eliminate the necessity of current sense resistors to thereby reduce the mounting area, improve the efficiency, and realize favorable transient characteristics. A multi-phase DC/DC converter with N phases (N is an integer equal to or greater than 2) is provided. A high-side transistor MH, a low-side transistor ML, and an inductor L are provided for each phase ?. Output power supply wiring connects a load side end of each of N inductors L1 to LN and a load. The output power supply wiring is branched from the load toward the load side ends of the N inductors L1 to LN. A coil current flowing through an inductor Li of an ith phase ?i (i=1, 2, . . . N) is detected based on a voltage drop Vsi of a branch portion bri corresponding to the phase ?i of the output power supply wiring.

Abstract: A power conversion system includes one power conversion device and one or more power conversion devices. The power conversion device includes a power converter that controls output voltage to be a preset voltage to apply the preset voltage to a load on the basis of an output from a power supply. The power conversion device controls the power converter so that a detected value of the first voltage detected by a voltage detector becomes a preset voltage value. The power conversion devices each include a power converter that controls output current to be a preset current to supply the preset current to the load on the basis of an output from a power supply. The power conversion devices each controls operation of the power converter on the basis of the detected value of the first voltage. The power conversion device controls operation of the power converter by changing the first voltage.

Abstract: A multi-stage charge pump including a first stage configured to generate a first output voltage, a last stage configured to receive the first output voltage from the first stage and output a second output voltage, a switch configured to receive the second output voltage from the last stage, and a voltage regulator circuit configured to control the second output voltage of the last stage to maintain a substantially constant on-resistance of the switch.

Abstract: An I-V conversion module includes: a current output type sensor, a pre-integral circuit, a charge transfer auxiliary circuit, and an I-V transformation circuit including an inverting amplifier. The current output type sensor is connected to an input end of the I-V transformation circuit through the pre-integral circuit. The charge transfer auxiliary circuit connects in parallel with the inverting amplifier. When both the pre-integral circuit and the charge transfer auxiliary circuit are open circuits, the pre-integral circuit pre-integrates the induction current output by the current output type sensor to store pre-integral charges. When both pre-integral circuit and the charge transfer auxiliary circuit are closed circuits, the pre-integral charges are transferred to the I-V transformation circuit. In these embodiments, both the time for establishing the I-V conversion module and power consumption can be reduced.

Abstract: An electroluminescent display and a method of driving the same are disclosed. The electroluminescent display includes a display panel including a plurality of pixels electrically connected to a plurality of data lines and a plurality of gate lines. Each pixel includes a driving element adjusting a current of a light emitting element depending on a gate-to-source voltage, and a switching element supplying a second voltage to the driving element in response to a gate-on voltage of an emission control signal. The switching element is turned off in response to a gate-off voltage of the emission control signal during a real-time compensation time. A source voltage of the driving element is changed during the real-time compensation time.

Abstract: A voltage regulator apparatus includes operational amplifier, first resistor, second resistor, driving transistor, amplifier circuit, and output circuit. The operational amplifier has first input terminal coupled to reference voltage, second input terminal, and output terminal. The first resistor has first terminal coupled to second input terminal. The second resistor is coupled between first resistor and ground level. The driving transistor has control terminal coupled to output terminal of operational amplifier and first terminal coupled to second terminal of first resistor. The amplifier circuit is coupled to output terminal of operational amplifier and configured to sense output voltage of voltage regulator apparatus to amplify the sensed voltage with specific gain to regulate a transistor of output circuit. The transistor has control terminal controlled by amplifier circuit. The output voltage is generated at first terminal of the transistor.

Abstract: The present technology relates to a regulator circuit and a control method capable of coping with steep change in load. An output transistor provided between an input terminal and an output terminal, a differential amplifying unit that amplifies a difference between reference voltage and voltage fed back from the output transistor, a voltage feedback path, and a current feedback path are provided, in which the current feedback path includes a current source and a transistor. The transistor included in the current feedback path is formed of an NMOS, a gate is connected to an output terminal of the differential amplifying unit, a drain is connected to the current source, and a source is connected to an input terminal of the differential amplifying unit. The present technology is applicable to a regulator circuit.

Abstract: Devices and methods are provided related to modulated power supplies. The device includes an inductor. When a load is to be supplied with power, a terminal of the inductor is coupled to the load. When the load is not to be supplied with power, terminals of the inductor may be coupled with each other.

Abstract: Systems, methods, and devices for providing power to low energy circuits include inrush circuits. Devices include a regulator that includes at least one driver device configured to generate a first current associated with a load comprising a low energy integrated circuit. Devices also include a bias generator configured to generate a second current to charge a load capacitor coupled with a power terminal of the low energy integrated circuit. Devices further include an enable circuit configured to enable the bias generator and disable the regulator responsive to a load voltage being below a threshold voltage, and further configured to enable the regulator to generate the first current and disable the bias generator responsive to the load voltage being above the threshold voltage.

Abstract: A method of forming an integrated circuit comprises forming a first doped region and a second doped region in a substrate. The second doped region is formed separate from the first doped region by a first spacing. A dielectric layer is formed over the substrate, and a gate is formed over the dielectric layer. The gate is positioned having the first doped region on a first substrate side of the gate and the second doped region on a second substrate side of the gate, opposite the first substrate side of the gate. A third doped region is formed in the substrate separated from the first doped region by a second spacing. The method further comprises forming a fourth doped region in the substrate.

Abstract: An application launcher and management framework (ALM framework) is provided for enabling and managing the execution of external applications (e.g., third party applications) on a network device. The ALM framework enables external applications to be executed and managed on a network device based upon configuration information specified for the external applications. In certain embodiments, the ALM framework enables an external application to be executed within the network device's network operating system (NOS) as if the application was provided as part of the NOS. By enabling the external application to be integrated with the network device's NOS, the ALM framework enables several services provided by the NOS to be made available to the external application.

Abstract: A device and method for hybrid feedback control of a switch-capacitor multi-unit voltage regulator are presented. A multi-unit switched-capacitor (SC) core includes a plurality of SC converter units, each unit with a capacitor and a plurality of switches controllable by a plurality of switching signals. Power switch drivers provide a switching signal to each SC converter unit. A secondary proactive loop circuit includes a feedback control circuit configured to control one or more of the plurality of switches. A comparator is configured to compare the regulator output voltage with a reference voltage and provide a comparator trigger signal. Ripple reduction logic is configured to receive the comparator trigger signal and provide an SC unit allocation signal. A multiplexer is configured to receive a first clock signal, a second clock signal, and the SC unit allocation signal and provide a signal to the power switch drivers.

Abstract: A digital LDO regulator includes: a pulse control circuit for generating a proportional control signal based on an error code, generating an integral control signal that toggles during a first section, which includes an initialization section and an integration section, based on the proportional control signal, and generating a state information signal that defines a steady state section, the initialization section, and the integration section; a proportional control circuit for outputting a first drive signal by multiplying the error code by a proportional gain factor based on the proportional control signal; an integral control circuit for outputting a second drive signal by multiplying the error code by an integral gain factor based on the state information signal and the integral control signal; and a driver for adjusting the output voltage in response to the first drive signal and the second drive signal.

Abstract: An electronic device may include: a load and a voltage regulator coupled to the load and configured to provide a load current, where the voltage regulator includes a first and a second pass device coupled in parallel and configured to operate simultaneously. A method may include providing current to a load using a first and a second pass device coupled in parallel and configured to operate simultaneously, where the first device provides a first current corresponding to a high-frequency component and the second device provides a second current corresponding to a low-frequency component; in response to a decrease in a low-frequency component, causing the second current to decrease and causing the low-frequency component to increase; and in response to an increase in the low-frequency component, causing the second current to increase and causing the low-frequency component to decrease.

Abstract: Embodiments described herein present a new LDO design that eliminates the need for the sleep bias circuitry included in other systems. Further, the new LDO design can be biased with a small fraction of the operating current enabling the LDO to wake up substantially faster than previous LDO designs that include separate sleep circuitry. In some cases, the LDO can instantly (or faster than other LDOs) transition from a sleep mode to an operating mode enabling improved operation compared to prior LDOs. Furthermore, the new LDO design maintains a non-breakdown voltage across the transistors reducing the need to enter sleep mode to prevent transistors of the LDO from entering a breakdown region.

Abstract: An electronic apparatus comprises several series-connected loads powered by a high voltage power source. To provide voltage regulation for each load, a ladder circuit is described. To automatically balance the voltage at output, one or more voltage-control-oscillators are included.

Abstract: A linear power supply circuit includes a first output transistor of a P-channel type or pnp type which is connected between an input terminal to which an input voltage is input and an output terminal from which an output voltage is output; a first differential amplifier configured to amplify a difference between the output voltage or a feedback voltage according to the output voltage and a predetermined first reference voltage and output a first amplification voltage; a second differential amplifier configured to amplify a difference between the input voltage or a first monitor voltage according to the input voltage and the output voltage or a second monitor voltage according to the output voltage and output a second amplification voltage; and a first driver configured to generate a control voltage of the first output transistor according to the first amplification voltage and the second amplification voltage.

Abstract: According to one embodiment, in a semiconductor integrated circuit, a first input terminal of an error amplifier is electrically connected to a third node between a second node and a reference potential. A second input terminal of the error amplifier is electrically connected to a reference voltage. An output terminal of the error amplifier is electrically connected to a gate of an output transistor. A first input terminal of a comparator is electrically connected to a fourth node between the second node and the reference potential. A second input terminal of the comparator is electrically connected to the reference voltage. One end of a coupling capacitance is electrically connected to an output terminal of the comparator. A gate of an auxiliary transistor is electrically connected to the other end of the coupling capacitance. A drain of the auxiliary transistor is electrically connected to the second node.

Abstract: An apparatus includes an integrated circuit (IC). The IC includes a regulator to receive a plurality of input voltages and to provide a regulated output voltage to a load. The regulator includes a plurality of voltage regulators that receive the plurality of input voltages and provide the regulated output voltage as an output of the regulator. The IC further includes a controller that controls the regulator by using a voltage regulator in the plurality of voltage regulators to generate the regulated output voltage from the plurality of input voltages.

Abstract: An integrated circuit comprises a first doped region and a second doped region in a substrate. The second doped region is separated from the first doped region by a first spacing. The integrated circuit further comprises a dielectric layer over the substrate and a gate over the dielectric layer. The gate is positioned having the first doped region on a first substrate side of the gate and the second doped region on a second substrate side of the gate opposite the first substrate side of the gate. The integrated circuit also comprises a third doped region in the substrate separated from the first doped region by a second spacing. The integrated circuit further comprises a fourth doped region in the substrate. The gate and the third doped region are coupled with a first voltage supply, and the fourth doped region is coupled with a second voltage supply.

Abstract: A circuit and a method for sensing a current flowing from a supply voltage into an electric load are presented. The current sensing circuit comprises a first circuit branch connected between the supply voltage and the electric load, a second circuit branch connected between the supply voltage and ground, and an equalization circuit for equalizing a first voltage drop across a first resistive element and a second voltage drop across a second resistive element and for generating an indication of a current flowing through the second circuit branch.

Abstract: The invention concerns a device for controlling at least one diode 2, the control device comprising an electrical card 4 comprising a printed circuit 5 on which the following are mounted: a diode 2, a front component 7 and a storage capacitor 9 connected in such a way as to form a circuit loop 17 extending substantially in a thickness of the electrical card 4.

Abstract: Presented systems and methods can facilitate efficient switching and protection in electronic systems. A system can comprise: an input operable to receive a signal; an adjustable component configurable to operate in a first mode which includes a low resistance and the component configurable to operate in a second mode which includes a current limiting operation in which the second mode enables continued operation in conditions that are unsafe for operation in the first mode; and an output operable to forward a signal. The adjustable component can be configurable to turn off if unsafe to operate in either the first mode or second mode. The first mode can include a relatively large component configuration with a relatively low drain to source on resistance. Utilizing a small component configuration in the second mode can include a relatively increased gate to source voltage compared to a large component configuration in the second mode.

Abstract: An efficient power supply with fast, wideband response has been disclosed. In one implementation, two switching regulators with different frequency responses are combined to provide wideband, efficient power.

Abstract: In certain aspects, a method for voltage regulation includes adjusting, using a feedback circuit, a resistance of a first pass element in a direction that reduces a difference between a reference voltage and a feedback voltage, wherein the first pass element is coupled between an input and an output of a voltage regulator, and the feedback voltage is equal to or proportional to a voltage at the output of the voltage regulator. The method also includes adjusting a bias voltage of the feedback circuit in a direction that reduces the difference between the reference voltage and the feedback voltage.

Abstract: An apparatus operates at least one light-emitting diode in the form of a laser diode. The light-emitting diode is interconnected in series with the load section of a controllable semiconductor element and a current measuring resistor between a first supply voltage terminal and a second supply voltage terminal. The supply voltage terminals are the output connections of a voltage-regulating circuit in the form of a DC voltage boost converter which provides a supply voltage), and wherein a current-regulating circuit is provided for the current through the at least one light-emitting diode, whose actuator is the controllable semiconductor element.

Abstract: A medical laser using solely an electronic shutter circuit for controlling the laser output, without any mechanical shutter mechanism, is provided for use in clinical applications. The medical laser has several advantages compared to medical lasers with mechanical shutters. These advantages can be defined in terms of the speed of the electronic shutter, increased reliability, increased safety, smaller and less expense. The medical laser according to the invention will shut the laser down in less than 100 microseconds making it far superior to what would be possible with a typical mechanical shutter which would take at least 10 ms to disable the laser. Safety and reliability is a result of an electronic shutter circuit with at least two current sensors, at least two photodetectors and a set of one, two or three fast electronic safety switches.

Abstract: Disclosed are a method and circuit for reducing a ripple of a current output by a current source. The circuit for reducing a ripple of a current output by a current source comprises a tube with adjustable impedance and a control circuit.

Abstract: An electric power conversion device includes a plurality of cell converters connected in cascade and including main circuits, drive circuits, and self-feeding devices for supplying power to the drive circuits by being supplied with power from the main circuits. The drive circuit is supplied with power via a first feed line from the self-feeding device in the corresponding cell converter, and supplied with power from the self-feeding device in another cell converter via a second feed line on which an insulation input/output circuit is provided. When the self-feeding device is abnormal, the drive circuit is supplied with power from the self-feeding device in the other cell converter, whereby the electric power conversion device continuously provides a desired output.

Abstract: A voltage regulator circuit includes: an output transistor that controls an output voltage by making an output current flow between first and second electrodes in accordance with a first differential voltage, which is a difference between first and second voltages of the first and third electrodes; an operational amplifier that controls the second voltage such that the output voltage comes to be at a target level; an initiation circuit that maintains the second voltage at the third voltage such that the output transistor is off before initiation of the voltage regulator circuit and that allows the second voltage to be controlled by the operational amplifier after initiation of the voltage regulator circuit; and a current output circuit that outputs an adjustment current from the third electrode or to the third electrode such that the first differential voltage becomes larger when the output voltage is less than a prescribed level.

Abstract: A power supply management device includes: a signal-output-unit for outputting, for each of a plurality of power-supply-lines for which voltage supply is started in a predetermined order, a signal indicating that a voltage of the power-supply-line has reached a given level; and a voltage-shut-off-circuit for short-circuiting one of the power-supply-lines for which voltage supply is started second or later, to a portion at a voltage level lower than a level of a voltage supplied to each of the power-supply-lines, at or before a time point of start of voltage supply to one of the power-supply-lines for which voltage supply is started first, and releasing the one power-supply-line from being short-circuited in accordance with the signal indicating that a voltage of one of the power-supply-lines for which voltage supply is started immediately before voltage supply to the one power-supply-line is started has reached a given level.

Abstract: A method and apparatus for performing a function in a mobile device are disclosed. A media sound from a sound output device external to the mobile device is captured and a sound feature is extracted from the captured media sound. A function to be performed in the mobile device is determined by identifying at least one reference sound feature in a set of reference sound features based on the extracted sound feature, each reference sound feature in the set of reference sound features being associated with at least one of a plurality of media sounds and at least one of a plurality of functions. Further, the determined function is performed in the mobile device.

Abstract: An auxiliary power supply device can include a first power storage unit, a first charging circuit to receive input power and charge the first power storage unit, a second power storage unit having lower power supply speed than the first power storage unit and longer power supply time than the first power storage unit, a second charge circuit to receive input power and charge the second power storage unit, and a switching unit to supply the stored power of the first power storage unit to external devices for a predetermined time when a sudden power-off occurs and supply stored power of the second power storage unit to the external devices after the predetermined time elapses.

Abstract: Switch devices with a first switching path and a second switching path are provided in some embodiments. When a voltage drop across the first switching path exceeds a predetermined voltage, the second switch may be activated.

Abstract: A low-drop-output type voltage regulator may include an error amplifier providing a gate signal depending on a voltage difference between a reference voltage and a feedback voltage, a semiconductor switch adjusting a current between an input terminal receiving a battery voltage and a ground, in response to the gate signal, a feedback circuit dividing and detecting a detection voltage in a detection node between the semiconductor switch and the ground and providing the feedback voltage, a voltage sensor sensing the battery voltage, and a feedback voltage controller adjusting a level of the feedback voltage depending on the sensed battery voltage.