Abstract: An electric power supply system includes an electric power reception apparatus and an electric power supply apparatus adapted to supply electric power to the electric power reception apparatus when the electric power reception apparatus is placed on the electric power supply apparatus. The electric power supply apparatus includes a plurality of electric power supply units adapted to supply electric power by electromagnetic induction to the electric power reception apparatus. A selection unit of the electric power supply apparatus selects, from the total plurality of electric power supply units, a plurality of electric power supply units whose location corresponds to a position where the electric power reception apparatus is placed, and a control unit controls the supply of electric power such that electric power is supplied to the electric power reception apparatus from the selected plurality of electric power supply units.

Abstract: Various receiver electrodes for supplying power to a load connected in a capacitive power transfer system are disclosed. In one embodiment, the receiver electrodes include a first conductive plate (212) connected to a first sphere-shaped hinge (211), wherein the first sphere-shaped hinge is coupled to a first receiver electrode (210); and a second conductive plate (222) connected to a second sphere-shaped hinge (221), wherein the second sphere-shaped hinge is coupled to a second receiver electrode (220), the second receiver electrode being connected to an inductor of the capacitive power transfer system and the first receiver electrode being connected to the load, the inductor being connected to the load to resonate the capacitive power transfer system.

Abstract: Power management and power transfer systems within the transmit and receive portions of an inductive charging system. An inductive charging system may include an inductive charging station to transmit power and a portable electronic device to receive power. Embodiments may take the form of power transfer systems within an inductive charging station including load-based transmit frequency adjustments. Embodiments may also take the form of power management systems within portable electronic devices which conserve power by disconnecting circuits from ground when those circuits are in an idle state.

Abstract: A method of handling wireless charging authentication for an electronic device of a wireless charging system includes sending a first message to a controller of the wireless charging system to notify the controller that an authentication is required by a wireless charger of the wireless charging system; receiving a second message including authentication information from the controller; and sending a third message including the authentication information to the wireless charger, in order to satisfy the authentication.

Abstract: A wireless power transmission device is provided. The wireless power transmission device includes a resonance signal generator and a controller. The resonance signal generator is configured to transmit wireless power to a wireless power reception device. The controller is configured to adjust the wireless power transmitted to the wireless power reception device, when a predetermined condition caused by over-voltage protection operation at the wireless power reception device is detected.

Abstract: Configurations and methods of wireless power transmission using a laptop computer may include a transmitter and/or a receiver embedded in the laptop screen. The embedded transmitter may emit RF waves for the generation of pockets of energy that may be utilized by receivers in peripheral devices for charging or powering. Meanwhile, the receiver embedded in the laptop computer may collect RF waves from a separate transmitter for charging or powering the laptop computer.

Abstract: Some embodiments provide a system for charging devices. The system includes a master device and a slave device. Some embodiments provide a method for charging devices in a system that includes a slave device and a master device. The slave device includes (1) an antenna to receive a radio frequency (RF) beam and (2) a power generation module connected to the antenna that converts RF energy received by the slave antenna to power. The master device includes (1) a directional antenna to direct RF power to the antenna of the slave device and (2) a module that provides power to the directional antenna of the master device.

Abstract: A faulted circuit indicator includes a microprocessor or discrete logic to determine a fault condition and initiate one or more fault indications, a super capacitor, a battery, and power supply circuitry for providing power to the microprocessor and one or more fault indicators. The power supply circuitry: inductively receives energy from a power line; determines whether an induced voltage is sufficient to power one or more functions of the FCI device; and if not, determines whether available voltage from the super capacitor is sufficient to power the one or more functions of the FCI device. If so, the power supply circuitry draws voltage from the super capacitor and, if not, the power supply circuitry draws voltage from the battery when it is determined that the available voltage from the super capacitor is not sufficient to power the one or more functions of the FCI device.

Abstract: According to one aspect, embodiments herein provide a power device comprising an input, power circuitry, a plurality of outlets, a network module configured to be coupled to a network, a controller coupled to the plurality of outlets, the power circuitry and the network module, the controller configured to operate the power circuitry to provide output power to the plurality of outlets derived from input power, provide a management interface to a management system via the network module and the network, the management interface configured to allow an operator to provide an indication of a type of equipment coupled to each one of the plurality of outlets, and display, via the management interface, a plurality of network configuration options in a layout based on the indication of the type of equipment coupled to each one of the plurality of outlets provided by the operator.

Abstract: To prevent overloading of a shared secondary power feed, active transfer switches are controlled to switch discrete hardware from the shared secondary to a corresponding primary power feed, even if such a primary is currently nonoperational thereby resulting in deactivation of such hardware. A threshold amount of power draw from the shared secondary is established, such as to ensure that failure of a single primary can be accommodated, and active transfer switches are controlled so as to prevent such a threshold from being exceeded. Alternatively, or in addition, active transfer switches are controlled such that they, in the event of an interruption in the power being provided by the primary power feed, either switch to the shared secondary or, in accordance with the aforementioned control, do not switch despite the interruption in power.

Abstract: A connector includes a main housing element for holding smart connector circuitry. A threaded nub extends from the main housing element and is sized to be received within a knock-out of a junction box. The threaded nub has a first opening and a second opening separated by a barrier for allowing respective ones of power wires and dimming wires, which are coupled to the smart connector circuitry, to be passed from the main housing element to the junction box.

Abstract: The invented power feeding system includes power transmitting and power receiving devices. The power transmitting device includes an AC power source, a first electromagnetic induction coil, a first resonant coil, and a first capacitor. The power receiving device includes an antenna unit including a second resonant coil, a second capacitor, and a second electromagnetic induction coil; a charging circuit unit including a rectifier circuit, a power storage device, a current detection circuit for detecting a current value supplied to the power storage device, and a voltage detection circuit for detecting a voltage value applied to the power storage device; and a communication control unit including a control circuit for generating a selection signal based on the detected current value and the detected current voltage, a plurality of switches to be turned on or off by the selection signal, and passive elements electrically connected to the plurality of switches.

Abstract: This document discusses apparatus and methods for reducing energy consumption of digital-to-time converter (DTC) based transmitters. In an example, a wireless device can include a digital-to-time converter (DTC) configured to receive phase information from a baseband processor and to provide a first modulation signal for generating a wireless signal, and a detector configured to detect an operating condition of the wireless device and to adjust a parameter of the DTC in response to a change in the operating condition.

Abstract: The present disclosure provides wireless charging and powering methods for healthcare gadgets and wireless sensors. The method may include wireless power transmission through suitable techniques such as pocket-forming. The methods may include one or more transmitters and one or more receivers. In some embodiments the transmitters and receivers may be embedded to medical devices and wireless sensors, respectively. In other embodiments, the receiver may be integrated into wireless sensors. In yet another embodiment, the transmitters may be positioned on strategic places so as to have a wider range for wireless power transmission to portable electronic medical devices and wireless sensors.

Abstract: Methods and apparatuses for wireless communication with a system of a vehicle are provided. One implementation includes an apparatus for wireless communication with a system of a vehicle. The apparatus comprises a first antenna configured to receive a signal from the system of the vehicle. The apparatus comprises a processor configured to determine whether the first antenna is saturated by an external magnetic field. The processor is further configured to cause the at least one of the first antenna or a second antenna to transmit a frame indicating that the first antenna is saturated by the external magnetic field in response to determining that the first antenna is saturated. The frame is a periodic frame. The processor is further configured to transmit an identification frame identifying the apparatus in response to receiving a trigger signal. A wireless power transmitter is configured to reduce or discontinue wireless power transmission in response to receiving the frame.

Abstract: A method for controlling communication between wireless power transmitter managers is disclosed. According to some aspects of this embodiment, wireless power transmission system may include one or more wireless power transmitter managers and one or more wireless power receivers for powering various customer devices. A WiFi connection may be established between wireless power transmitter managers to share information between system devices. Wireless power transmitter manager may need to fulfill two conditions to control power transfer over a customer device; customer device's signal strength threshold has to be significantly greater than 50%, such as 55% or more of the signal strength measured by all other wireless power transmitter managers and has to remain significantly greater than 50% for a minimum amount of time.

Abstract: A power supply apparatus includes a power supply unit that wirelessly supplies power to an electronic device, a communication unit that transmits information related to the power supply apparatus to the electronic device, transmits information for requesting the electronic device for transmitting information related to the electronic device, when a predetermined time has elapsed after the information related to the power supply apparatus is transmitted to the electronic device, and receives the information related to the electronic device from the electronic device; and a control unit that uses the information related to the electronic device to control power to be wirelessly supply to the electronic device, after the information related to the electronic device is received from the electronic device.

Abstract: An electromagnetic connector is disclosed that is configured to form a first magnetic circuit portion comprising multiple coils disposed about a first core member. The electromagnetic connector is configured to mate with a second electromagnetic connector that is configured to form a second magnetic circuit portion comprising a coil disposed about a second core member. When the electromagnetic connector is mated with the second electromagnetic connector, the first core member and the second core member are configured to couple the multiple coils of the electromagnetic connector to the coil of the second electromagnetic connector with a magnetic circuit formed from the first magnetic circuit portion and the second magnetic circuit portion. The magnetic circuit is configured to induce a signal in a first coil of the multiple coils and the coil of the second electromagnetic connector when a second coil of the multiple coils is energized.

Abstract: A rotor includes a hollow cylindrical rotor core that has a center hole, in which a rotating shaft is to be press-fitted, and a plurality of magnet-receiving holes in which a plurality of permanent magnets are respectively received. In a radially inner surface of the rotor core defining the center hole, there are formed a plurality of non-contacting recesses and a plurality of contacting protrusions alternately in the circumferential direction of the rotor core. Each of the non-contacting recesses is recessed radially outward so as not to be in contact with the rotating shaft. Each of the contacting protrusions protrudes radially inward so as to be in pressed contact with the rotating shaft. The rotor core further has a plurality of through-holes each of which penetrates the rotor core in the axial direction of the rotor core and is located radially outside a corresponding one of the contacting protrusions.

Abstract: Disclosed are a hairpin connecting device and a hairpin winding motor including the same. An exemplary embodiment of the present invention may provide a hairpin connecting device including: a cover part shaped like a circular loop fastened to a leg side of a stator core; and a plurality of connection caps arranged inside the cover part in a circumference direction and configured to electrically connect connected ends of respective hairpins exposed to the leg side.

Abstract: A stator includes a hollow cylindrical stator core and a stator coil. The stator core has a plurality of slots formed therein. The stator coil is provided in the slots of the stator core in a plurality of layers in a radial direction of the stator core, and includes a first winding and a second winding. The first winding extends around the stator core so as to be located at the (2n?1)th and 2nth layers of the stator coil, and has an end located at the 2nth layer, where n is a natural number. The second winding extends around the stator core so as to be located at the (2n+1)th and (2n+2)th layers of the stator coil, and has an end located at the (2n+1)th layer. The ends of the first and second windings, which are respectively located at the 2nth and (2n+1)th layers, are electrically connected to each other.

Abstract: A coil that is wound around a core having a plurality of slots arranged so as to be distributed in a circumferential direction of a cylindrical core reference plane, and that has N (where N is an integer of 2 or more) star connections. Each of the N star connections includes three phase coil portions corresponding to respective three phases, and first ends of the three phase coil portions are connected together at a neutral point that is formed independently for each of the star connections, second ends of the N phase coil portions of the same phase which are included in the different star connections are connected to each other, a phase coil placement region where the phase coil portion is placed is designed to be continuous in the circumferential direction.

Abstract: A stator core with a plurality of slots circumferentially arranged therearound has a stator winding including three (UVW) phase windings, each phase winding having 4n parallel windings. The stator winding is formed of U-shaped conductor segments inserted in the slots from one axial end, a pair of open end portions of each conductor segment extending axially from of the stator core and being bent toward circumferentially opposite directions, the bent portions being star connected together. The plurality of slots have, for each phase winding, pairs of circumferentially adjacent slots, each slot having an even number of slot-received portions of the phase winding radially aligned in a column, and for each circumferential slot pairs, the slot-received portion in an m-th layer of each slot of the pair is electrically connected to the portion inserted in an (m+1)-th layer of a slot of a circumferentially adjacent slot.

Abstract: An electrical induction motor may include a stator with a plurality of circumferentially spaced slots, and N windings installed in the slots and each configured to be connected between two current inputs from an inverter, with a phase angle difference between the two current inputs equal to H×180°/N, wherein H=a harmonic of a current drive waveform supplied by the inverter to the windings. Each of the N windings may be installed in the plurality of slots to form a top layer of winding and a bottom layer of winding, with a phase angle of the current flowing through the top layer of winding in each slot being aligned with a phase angle of current flowing through the bottom layer of winding at a first, higher harmonic, and out of alignment at a second, lower harmonic.

Abstract: An insertion groove is disposed on a tubular portion overlapping portion that is overlapped with an inner circumferential surface of a tubular portion of the stator core. Inter-coil insulating bodies that are disposed between a plurality of stator coils include a groove inserted portion. The groove inserted portion includes: a first inserted portion that can be inserted inside the insertion groove when the insulating film is in a bent and folded state; and a second inserted portion that is contiguous to the first inserted portion, a shape of a visible outline of a cross section of the second inserted portion being different than that of the first inserted portion. The second inserted portion generates a stronger elastic force of recovery than the first inserted portion when the groove inserted portion is inserted into the insertion groove.

Abstract: In a motor, a magnet is configured so that four pairs of S-poles and N-poles are formed at equal angular intervals, and a stator core has six salient poles formed thereon. Of the plurality of salient poles, when the first salient pole or the second salient pole faces a position between an S-pole and an N-pole, the other salient pole faces the center of an S-pole or the center of an N-pole. The radial-direction lengths of the first salient pole and the second salient pole among the plurality of salient poles are longer than the other salient poles, and the radial-direction length of the portion of the first coil wound around the first salient pole and the radial-direction length of the portion of the second coil wound around the second salient pole are longer than the radial-direction lengths of the other salient poles.

Abstract: Disclosed is a motor, the motor according to exemplary embodiments of the present disclosure including an insulator body coupled to a stator core wound with a plurality of coils applied with powers of mutually different polarities to prevent the coil and the stator coil from being short-circuited, a terminal housing coupling unit integrally formed with the insulator body to be coupled to a terminal housing supplying an outside power by being circumferentially protruded, and a coil guide unit formed at the terminal housing coupling unit to prevent coils connected to a terminal of each polarity installed at the terminal housing from being short-circuited.

Abstract: A power collection device includes a carrier and a connection portion integrated with or attached to the carrier. The connection portion has a via for a wire to pass therethrough, a first side being in contact and connection with the carrier, a second side opposite to the first side, and a third side connected with the first and second sides. The via is in a shape of a circle, rectangle, square, rhombus, triangle with one side being close to the second side, or triangle with one angle being close to the second side. The via has a maximum length in a direction parallel to the first side being ¼ to ¾ times a length of the first side, and a maximum length in a direction perpendicular to the first side being ¼ to ¾ times a length from the first side to the second side.

Abstract: A coupling portion is provided on either a rotary shaft or a worm shaft in an integrally rotational manner, said coupling portion for connecting the rotary shaft to the worm shaft and having a coupling hole therein. The coupling projection provided on the other of the rotary shaft and the worm shaft is inserted in the coupling hole. A circumferential clearance and a radial clearance are formed between the inner surface of the coupling hole and the coupling projection. Circumferential buffer portions are interposed in the circumferential clearance, and radial buffer portions are interposed in the radial clearance. The inner surface of the coupling hole and the coupling projection are arranged such that the circumferential buffer portions are compressed to deform in the circumferential direction whereby to allow the buffer portions to be brought into contact with each other when the rotary shaft is rotating.

Abstract: A motor brake device includes an armature base, an armature plate, a fixing plate and at least one brake lining. The armature plate is disposed on the armature base. The armature plate is vertically movable relative to the armature base. The fixing plate is fixed on the armature base. The fixing plate and the armature base are located at two opposite sides of the armature plate. The braking assembly is arranged between the armature plate and the fixing plate, and includes a two-winged rotor hub plate, a brake friction plate and at least two elastic elements. The at least one brake lining is arranged between the armature plate and the braking assembly and/or between the fixing plate and the braking assembly.

Abstract: A rotor of a motor capable of simplifying a manufacturing process and improving precision. The rotor includes a screw type of ball spindle, and a nut spindle that surrounds the ball spindle, is screwed onto the ball spindle, and has magnets attached to an outer circumferential surface thereof.

Abstract: A system for recycling energy within an assembly line includes a mobile power generator attached to a conveyer platform (a.k.a. a “skillet”) or other conveyance within the assembly line. The mobile power generator has a drive wheel that contacts an adjacent surface, such as a floor, and is rotated by movement of the conveyance along or past the surface. Rotation of the drive wheel is transmitted to a low RPM electrical generator to produce electrical energy at the conveyance.

Abstract: The present invention is a system for producing energy via use of gravity and then integrating such a force into a system design of energy power generation by translating the force of gravity into potential energy then into kinetic energy and from kinetic energy back into potential energy again. This system can operate mechanically or electromechanically with the aid of a minimal amount of external energy. A mechanical sequence is introduced in the system's operation to prolong the operational functionality of motion to its working components to the point where full, or substantially full, and independent recycling of fluids takes place and in the process it generates power to run the system's electricity producing generators and supply electricity to the power grid.

Abstract: A device and method for generating electric energy/power from a wave motion. The device comprises an input branch connected to a movable element, a secondary branch connected to a main electric generator, a power split transmission comprising a first mechanical port connected to the input branch, and a second mechanical port connected to a secondary branch, and a third port being a mechanical or electrical control port. The device further comprises a variable speed auxiliary electrical machine connected to the control port for mechanically or electrically controlling power distribution in the power split transmission. The device further comprises a control unit adapted for controlling the variable speed auxiliary electrical machine in such a way as to realize a one-way rotation of the main electric generator.

Abstract: Provided is an electric motor having improved overall cooling efficiency by enabling a coolant to flow around a stator and around and through a rotor in parallel for the stator and the rotor to allow the stator and the rotor to be cooled in parallel. In the electric motor, after an automatic transmission fluid flowing into a first coolant inflow port (10) passes through a shaft internal flow path and rotor internal flow paths (27), the automatic transmission fluid passes through a coolant exhaust port (20) to flow out of a housing (18). After the automatic transmission fluid flowing into a second coolant inflow port (11) passes through a clearance (31) between the housing (18) and a stator (17) and around coil ends (29) of stator coils (16), the automatic transmission fluid passes through the coolant exhaust port (20) to flow out of the housing (18).

Abstract: A metal gear cover 43, which is provided so as to cover a worm wheel housing 36b, is disposed between a worm wheel 41d and a circuit board 51 and grounded, thereby quickly introducing exogenous noise “ON” such as static electricity to the outside of the sunroof motor 21, even if exogenous noise “ON” enters the sunroof motor 21 and reaches the gear cover 43. Therefore, it is possible to surely prevent exogenous noise “ON” from being reflected to the circuit board 51, and causing the circuit board 51 to malfunction and the like. Furthermore, it is possible to improve reliability of the sunroof motor 21.

Abstract: A monitoring system for monitoring an electric machine is provided. A mini-camera for observing the electric machine is arranged inside the electric machine. Moreover, the mini-camera is arranged movably on guide elements, wherein the guide element is designed in such a way that the mini-camera is held in an uncritical parked position during the operation of the electric machine.

Abstract: An electric machine assembly includes an electric machine including a rotor. A controller operatively connected to the electric machine and configured to receive a torque command. The rotor is configured to rotate at a rotor speed (?) based at least partially on the torque command. The controller has a processor and tangible, non-transitory memory on which is recorded instructions for executing a method for determining a cumulative rotor fatigue (FC) based at least partially on the rotor speed. The controller is operative to control at least one operating paramater of the electric machine based at least partially on the cumulative rotor fatigue (FC). The controller is configured to record respective occurrences of the rotor stress value exceeding respective predefined stress levels in chronological order to create a cycle dataset, such that the cycle dataset preserves a time order of the respective occurrences.

Abstract: A method for sealing fluid cooled conduits in-situ for a generator is provided. The fluid or liquid cooled conduits are located external to a stator of the generator and substantially outward of stator bars. The method includes draining coolant from the fluid cooled conduits, and drying interior surfaces of the fluid cooled conduits. In inserting step inserts a borescope and a sealant applicator through an opening in one of the fluid cooled conduits. A locating step locates a brazed joint in the fluid cooled conduit, and a positioning step positions the borescope and the sealant applicator near the brazed joint. An applying step applies a sealant to the inside of the fluid cooled conduit at the brazed joint A viewing step may be used to view the brazed joint with the borescope to confirm that the applying step has been successful.

Abstract: In a rotor manufacturing method, a magnetic body is moved by being pushed by a pusher along a guide surface of a guide portion, and the magnetic body is in a stated of being biased to the guide surface since the magnetic body is urged by a restriction portion. Therefore, the magnetic body can slide reliably between the guide portion and the restriction portion while restricting an insertion posture of the magnetic body. Thus, even if a wall surface of a magnet insertion hole is provided with a protrusion, when the magnetic body slides with the guide surface as a reference, the magnetic body will not abut against the protrusion, and the magnetic body can be reliably loaded into the magnet insertion hole.

Abstract: An improved rotor assembly configured for magnets with differing lengths, and methods and systems for manufacturing the same. The rotor assembly may be created by selectively creating first and second tabs extending into apertures of lamination sheets. The first and second tabs may be selectively removed, depending on the different magnet lengths and the specific lamination sheet, according to one of a first finishing schedule and a second finishing schedule. The lamination sheets are stacked with any remaining first and second tabs, and other features, aligned.

Abstract: A disclosed apparatus includes a converter for receiving a supply and regulating a load. The converter uses a gate driver that is controlled by a controller via a control loop. The control loop controls the converter in response to a feedback signal. The controller is located on a first integrated circuit and the gate driver is located on as second integrated circuit. A process geometry of the first integrated circuit is finer than a process geometry of the second integrated circuit.

Abstract: In accordance with embodiments of the present disclosure, systems and methods may include an input configured to indicate a switching node voltage of a switching node of a power converter comprising a first switch device coupled at its non-gate terminals between a ground voltage and the switching node and a second switch device coupled at its non-gate terminals between an output supply node and the switching node. The systems and methods may also include a predriver circuit coupled to the input and a gate terminal of the first switch device, the predriver circuit configured to drive an input voltage signal to the gate terminal of the first switch device and configured to select an effective impedance of the gate terminal of the first switch device based on the input.

Abstract: A converter includes a first bridge arm and a voltage clamping unit. The first bridge arm includes a first switching unit. The voltage clamping unit is coupled to the first bridge arm, and includes a first charging branch and a second charging branch. The first charging branch is configured to have a first resonant frequency, to absorb a first spike of the first switching unit. The second charging branch is configured to have a second resonant frequency to absorb a second spike of the first switching unit.

Abstract: In one embodiment, a power factor correction (PFC) circuit can include: (i) a rectifier bridge and a PFC converter coupled to an input capacitor; (ii) a harmonic wave compensation circuit configured to shift a phase of a DC input voltage provided from the rectifier bridge, where the harmonic wave compensation circuit comprises a phase of about ?45° when a corner frequency is about 50 Hz; and (iii) a PFC control circuit configured to control the PFC converter, where the PFC control circuit comprises a first sampling voltage, and the harmonic wave compensation circuit is configured to control a phase of the first sampling voltage to lag a phase of the DC input voltage by about 45°.

Abstract: A switched-mode power supply device that rectifies and smoothes a direct input voltage to obtain a predetermined output voltage is disclosed. A series circuit includes a reactor and a switching element and the circuit switches the direct input voltage. An OFF time calculator calculates an OFF time of the switching element based on the direct input voltage, the output voltage, and an ON time of the switching element calculated based on the output voltage and a reference value. A frequency calculator calculates at least one of a period and a frequency based on the OFF time calculated by the OFF time calculator and the ON time. A controller that controls switching of the switching element based on a result of comparison between one of the period and the frequency, and a corresponding one of a reference period and the reference frequency.

Abstract: A two-stage power converter architecture including an isolation transformer and rectification of the isolation transformer output by an LLC resonant circuit and methodology for operating the same feeds an output voltage back to a circuit for generating waveforms for controlling a totem pole circuit to provide output voltage regulation as well as rectification of AC input voltage. The circuit for controlling the totem pole circuit may also be responsive to the AC input power waveform to provide power factor correction (PFC), in which case, the feedback signal provides additional pulse width modulation of the PFC signals. Bus capacitor size may also be reduced by injecting harmonics of the AC input waveform into the feedback signal which also serves to substantially maintain efficiency of the (preferably LLC) resonant second stage.

Abstract: A switching power supply device enables measures against noise even when the conducted EMI standard is expanded to a low frequency region. A jitter control circuit, configured so as to reduce generation of conducted EMI noise by giving jitter (frequency diffusion) to a switching frequency which drives a switching element, upon receiving a feedback voltage representing the condition of a load, expands the diffusion width of the switching frequency in stages in accordance with a shift from a fixed frequency region of a maximum oscillation frequency, through a frequency reduction region, to a fixed frequency region of a minimum oscillation frequency. By so doing, it is possible to obtain the effect of sufficient reduction of EMI noise even when an EMI noise measurement frequency range is expanded to a low frequency side.

Abstract: Transient or fault conditions for a switched capacitor power converter are detected by measuring one or more of internal voltages and/or currents associated with switching elements (e.g., transistors) or phase nodes, or voltages or currents at terminals of the converter, and based on these measurements detect that a condition has occurred when the measurements deviate from a predetermined range. Upon detection of the condition fault control circuitry alters operation of the converter, for example, by using a high voltage switch to electrically disconnect at least some of the switching elements from one or more terminals of the converter, or by altering timing characteristics of the phase signals.

Abstract: A charge pump circuit having first and second input nodes to be coupled to a first power source, and top and bottom output nodes and an intermediate node. The charge pump circuit produces i) a voltage at the top output node that is higher than a voltage of the intermediate node, and ii) a voltage at the bottom output node that is lower than the voltage of the intermediate node. A bias voltage source has i) an input that is to be coupled to a second power source and ii) an output that produces an output voltage, which is a predetermined proportion of an input voltage at the input and that follows the input voltage downward and upward as the input voltage sags and recovers, respectively. The output of the bias voltage source is directly connected to the intermediate node of the output stage. Other embodiments are also described.