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Power supply apparatus
There is provided a power supply apparatus capable of precisely control a primary side switching frequency at a secondary side by receiving fed-back information...
Power supply apparatus with auxiliary winding switching circuit
A power supply apparatus includes a main converter, an auxiliary winding switching circuit and a pulse width modulation controller. The main converter includes...
Power system switch protection using output driver regulation
A controller of a switching power converter includes a voltage protection circuit that generates a modified supply voltage that does not exceed a predetermined...
Hysteretic-mode pulse frequency modulated (HM-PFM) resonant AC to DC
The disclosed embodiments provide an AC/DC power converter that converts an AC input voltage into a DC output voltage. This AC/DC power converter includes an...
Controller with constant current limit
Methods and apparatuses are disclosed for generating a temperature independent current limit. The value of the temperature independent current limit may be...
Resonant converter apparatus and control method for the same
A resonant converter apparatus includes a first pre-regulator, a first resonant converter, a second pre-regulator, a second resonant converter and a controller....
Positive-side DC terminals P1' and P' connected to a positive-side DC bus of a chopper 4 are provided in the chopper 4 and the positive-side DC terminals P1'...
Discontinuous mode DC-DC converter including a voltage-current conversion
circuit for converting into current a...
The DC-DC converter includes an inductor cooperating with a first switch and a second switch operating alternately, in order to supply an output voltage of...
Low quiescent current pull-down circuit
A device to detect an electrical signal is provided. The device includes sensing, output, and pull-down nodes. The device includes a pull-down circuit having a...
Current sensing circuit for switching power converters
A current sensing circuit for a switched mode power converter employs a passive current sensing network coupled in parallel with the switched inductor. The...
Controller for adjusting a switching frequency in a boost converter
Thermal levels in an inductor of a boost converter may be managed by controlling an average current through the inductor. For example, a switching frequency of...
Switching charger, the control circuit and the control method thereof
A switching charger having a control circuit configured to provide a control signal; a power stage turned ON and OFF by the control signal; an inductor coupled...
An apparatus may be provided. The apparatus may comprise a first circuit portion, a second circuit portion, and a third circuit portion. The first circuit...
Device for controlling a switching mode power supply
An apparatus for controlling an output voltage of a switching mode power supply (SMPS) by adjusting a switching duty ratio is provided. A comparator outputs a...
Method of current compensation based on division-sigma control for DC/DC
A method is provided for current compensation. The method is based on division-sigma (D-.SIGMA.) control for a DC/DC converter. Inductance changes are allowed...
Control apparatus, switching power supply and control method for
maintaining power conversion efficiency
Disclosed herein are control apparatus, switching power supply, and control method embodiments for maintaining power conversion efficiency. An embodiment...
Fast response control circuit and control method thereof
In one embodiment, a control circuit configured to control a switch mode power supply, can include: (i) a compensation signal generating circuit configured to...
Switch mode power supply for envelope tracking
There is disclosed an envelope tracked power supply comprising a high bandwidth, low delay closed loop switch mode power supply stage comprising: a pulse width...
Switching regulator having fast startup time and low standby power
A switching regulator having fast start-up time and low standby power is disclosed. In an exemplary embodiment, an apparatus includes a transistor that...
Charge pump circuit
A bipolar output charge pump circuit having a network of switching paths for selectively connecting an input node and a reference node for connection to an...
Apparatus for regulating output voltage and apparatus for boosting voltage
There is provided an apparatus for regulating an output voltage, including: a sensing circuit sensing an output voltage from a charge pump; a comparator circuit...
Power factor correction circuit with active snubber and power supply
including the same
There are provided a power factor correction circuit and a power supply including the same, the power factor correction circuit including a main switch...
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...
Control of transformer flux density in an isolated switched mode power
A control circuit generates a control signal to control a duty cycle of a switched mode power supply such that the magnetic flux density in the transformer is...
A converter circuit with short-circuit protection can include a plurality of phase legs having a series connection of normally-on switches, between voltage...
Device and method for protecting a battery
A battery protection device for protecting a battery (1;41) comprises an electrical circuit arranged to generate or suppress a ripple current through said...
VCC charge and free-wheeling detection via source controlled MOS
A driver circuit using a power converter allows free-wheeling detection and/or provision of supply voltage. A circuit controls a switching state of a power...
Axial flux electric machine
An electric machine is described. The electric machine includes a rotor comprising a rotor disk and a plurality of permanent magnets magnetically coupled to the...
Amorphous divided-core stator and axial-gap-type motor using same
Provided are an amorphous split core stator, which maximizes an opposing area between a plurality of split cores and magnets, increases a fill factor of coils,...
Methods and systems for use in configuring a coil forming machine
A method for configuring a coil forming machine is provided. The method comprises receiving a 3D model of a production coil, generating a 3D model of the coil...
Electric motors having modular construction, power sharing and performance
Modular motor apparatuses, systems and methods are disclosed. Certain embodiments comprise a motor core and driver module a power supply module, and an external...
Transmission for a vehicle
A transmission for a vehicle is disclosed which includes a casing defining a first cavity and a second cavity inside the casing. A platform is at least...
Predicting motor failure based on relationship of motor pair
A system and method of predicting motor failure based on relationships of motor pair characteristics, such as temperatures. A motor pair detection module...
Anti-separating structure of sensing magnet for motor
The present invention relates to an anti-separating structure of sensing magnet for motor, wherein, the coupling between the plate and the sensing magnet is...
Air cooled electric motor
An electric machine includes a stator having a first end and a second end and an end frame including a first cup portion arranged to at least partially contain...
Facility for transforming heat energy
The facility for transforming heat energy includes an energy-storage device including an HT vat containing a heat-transfer fluid HT in pressurized gaseous...
A power tool includes a housing, a brushless motor, and a cover member. The housing has an air intake hole and an air exhaust hole formed therein, the housing...
Gear housing of linear actuator with opening for power take-off
A linear actuator comprising a cabinet (1), an electric motor (2), a transmission (4), a gear housing (11), a spindle nut (6), a spindle (5), the actuator being...
Magnetic coupler having magnets with different magnetic strengths
A coupling apparatus (20) is provided for transferring energy to or from a flywheel. The coupling apparatus comprises first (22) and second (24) movable...
Rotary body driving apparatus
The rotary body driving apparatus comprises: a rotary body having a plurality of reflective surfaces; a rotor being attached to a rotor shaft together with the...
Direct drive rotor with metal coupler
A rotor for an outer rotor-type motor is provided. The rotor includes a metallic coupler and a polymeric frame molded over at least part of the metallic coupler.
Electric power steering electric motor apparatus and electric power
An electric power steering electric motor apparatus includes: an electric motor including: a motor housing; a stator; a rotor; and a power supplying portion...
Inverter terminal board installed in motor case and packing
An inverter terminal board and packing capable of performing a packing function even when variations due to assembly tolerances of a motor and an inverter are...
Actuator unit with conductor stamping
An actuating drive having a housing which comprises receptacles for a step-down gear mechanism and for a very small electric motor, wherein the motor receptacle...
Rotary electric machine, bearing attaching and detaching jig, and bearing
To provide a rotary electric machine including a stator iron core, a rotor including a lamination core that is arranged within the stator iron core and is...
Grease leakage preventing structure for gear reducer
A grease leakage preventing structure is provided for a gear reducer of a dynamoelectric machine with a gear reducer, which is capable of preventing, if soft...
Spherical wheel motor
Disclosed is a spherical wheel motor including: a spherical rotor having freedom of rotation along surrounding magnetized directions; a stator formed in a dome...
Rotating electric machine
A rotating electric machine includes a rotor, a stator and an Insulating resin. The stator includes a stator core and a stator coil that is partially received...
Spoke type permanent magnet motor capable of minimizing leakage of
A spoke type permanent magnet motor according to the present invention includes a stator having a stator slot radially disposed according to the center thereof...
Low-cost low-cog PM machine
Due largely to their high torque-to-current and torque-to-volume ratios, permanent magnet (PM) motors and generators are increasingly being used in a wide range...