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Multilevel inverter device and operating method
An inverter comprises a first boost apparatus, a second boost apparatus, a first converting stage coupled to the first boost apparatus, wherein the first...
Universal power conversion devices for alternating current electric
The present disclosure is directed to universal power conversion devices for alternating current electric apparatus. One example power conversion device...
System and method for efficiently harvesting environmental energy
A transducer converts energy coming from an energy source into an electrical signal for storage as electrical energy on a first storage element. A switch is...
Quad-array diode-less RF-to-DC rectifying charge-pump converter for energy
A RF-to-DC converter charges a battery or powers a circuit from the energy of received radio waves. The RF energy received is very small for far-field...
A rectifier circuit includes an inductor connected to AC inputs of a diode bridge circuit, a capacitor series circuit connected to a DC output, and...
Control system and method for controlling a rectifier
A system and method for controlling a rectifier due to changing operating conditions including at least one reactor per phase connected to the rectifier for...
Power system including an electret for a power bus
A power system for an alternating current power bus includes an electret operatively associated with the alternating current power bus. The electret includes an...
Stabilization circuit for low-voltage lighting
An electronic transformer stabilization circuit includes a detection circuit and a reactive load. The detection circuit may be configured to receive a...
AC link converter switch engine
A multiport AC link converter includes a resonant AC link, an input port, an output port, and a plurality of switches. A first subset of the switches is between...
Method for operating a converter circuit
A method is disclosed for operating a converter circuit, in which controllable power semiconductor switches of the rectifier unit of a converter circuit are...
Power supplying apparatus
A power supplying apparatus may be capable of switching off a synchronous rectifier on a secondary side in advance by predicting a switching-on time on a...
Overcurrent protection circuit for a switching power supply apparatus
In a switching power supply apparatus, when it is detected at time t1 that a voltage Vis has exceeded a first threshold Vth1, a timer counting a period of time...
AC/DC power converter
In one embodiment, an AC/DC power converter can include: a rectifier bridge and a filter capacitor for converting an external AC voltage to a half-sinusoid DC...
Isolated switching power supply
An isolated switching power supply can include a switching element connected to an input power supply, a control circuit that ON/OFF-drives the switching...
Switching power supply
A switching power supply achieves simultaneously achieves suppression of surge voltage and satisfactory transient response. The switching power supply comprises...
Method of operating switch mode power converters, and controllers and
lighting systems using such a method
A controller and method for operating a controller are disclosed. In an embodiment, a method involves in a mode-setting phase, polling connection pins to sense...
Systems and methods for constant voltage mode and constant current mode in
flyback power converters with...
System and method for regulating a power converter. The system includes a first signal generator configured to receive a first sensed signal and generate an...
Power adapter having programmable gain compensation trim
A power adapter to supply power at an output. The power adapter has a programmable gain compensation trim function. In some examples, the gain compensation trim...
Power supply with tickle pulse injection
A power supply injects a series of "tickle" pulses into a pulse width modulated (PWM) controller to induce the controller to generate PWM pulses at a minimum...
Analog current estimation and digital estimation correction for a
multiphase buck converter
A phase current estimator for a switching power converter includes analog circuitry for generating a phase current estimate error by comparing a phase current...
DC-to-DC converters capable of communicating information between a slave
circuit and a master controller, and...
A slave circuit for a DC-to-DC converter includes a switching circuit adapted to repeatedly switch a switching node between two different voltage levels, a...
Safe electric power regulating circuit
A safe electric power regulating circuit is connected between a power supply and a voltage boost/buck circuit to regulate the output voltage by the power supply...
Automatic buck/boost mode selection system for DC-DC converter
A reconfigurable DC-DC converter including a controller is disclosed which automatically adjusts the mode of operation (buck mode or boost mode) depending on...
Switched mode power supply with a bypass path for shunting current
A switching stage is provided that generally includes multiple switching paths for routing a signal. For example, the switching stage may include a first...
DC/DC converter, switching power supply device, and electronic apparatus
Provided is a DC/DC converter for a switching power supply device including a plurality of DC/DC converters which include a master DC/DC converter and a...
Control method and control circuit for switching power supply
In one embodiment, a method of controlling a switching power supply can include: (i) generating an ideal on time signal according to an input voltage and an...
Switching power supply device
A switching power supply device wherein an input voltage is stepped-up by first and second switching elements that are driven on and off in a complementary way,...
SMPS with output ripple reduction control and method thereof
A SMPS has a switch, an inductor, a zero current detection circuit for detecting the current flowing through the inductor, a load judgment circuit and a control...
Low-loss step-up and step-down voltage converter
A switch-mode DC-DC voltage converter including a boost stage in the form of a charge pump and a buck stage. Control circuitry is provided that enables the...
Converter circuit and method for converting an input voltage to an output
voltage using a white noise generator
A converter circuit is described comprising a switch circuit configured to provide an output voltage, a control circuit comprising an analog control portion and...
Boost converter stage switch controller
A low voltage lamp includes a boost converter stage and a load. The load may include low voltage light producing elements including low voltage light emitting...
Multi-mode current-allocating device
A multi-mode current-allocating device serves to control the DC to DC converter in each power supply device of a distributive power supply system. The...
Charge pump circuit capable of reducing reverse currents
A charge pump unit capable of reducing reverse current includes a first NMOS transistor, a first PMOS transistor, a second NMOS transistor, and a second PMOS...
Charge pump regulator circuit
A charge pump regulator circuit includes an oscillator and one or more charge pumps. One or more oscillating signals are generated by the oscillator. Each...
Two-state charge-pump control-loop for MEMS DVC control
The present invention generally relates to a DVC having a charge-pump coupled to a MEMS device. The charge-pump is designed to control the output voltage...
Suspend mode in charge pump
A device may be associated with a power source. The device may include a charge pump configured to output a pulse-width modulated voltage based upon an input...
Charge pump circuit and semiconductor device including the same
Efficiency of a charge pump circuit is increased. The charge pump circuit includes serially connected fundamental circuits each including a diode-connected...
Output ripple voltage control for a capacitive DC/DC converter
A switching direct current (DC)-to-DC converter includes a charge pump circuit with a flying capacitor (104) and a switching circuit (106). The switching...
Arrangement and method for a vehicle inverter drive
A method and arrangement are disclosed for a vehicle inverter drive having a voltage distribution block and two or more inverters, intermediate circuits of...
Management of common mode noise frequencies in portable electronic devices
The disclosed embodiments provide a system that facilitates the use of a portable electronic device. During operation, the system detects a coupling of a power...
Reactive power management
Methods and systems for controlling a reactive power contribution to reactive power flowing in an electricity distribution network, so as to optimize this...
Controlled start-up of a linear voltage regulator where input supply
voltage is higher than device operational...
A controlled start-up circuit mechanism in a linear voltage regulator can handle a higher supply voltage at start-up and limits the voltage seen at the devices...
A snubber circuit of a switching power supply device includes a transistor and a capacitor which are connected in series between a cathode and an anode of a...
Method for controlling harmonics and resonances in an inverter
In a method based on the MPDTC algorithm for controlling an inverter of an electrical system, the harmonics and resonances in the inverter can be damped by...
Provided is a voltage regulator including a leakage current correction circuit capable of keeping the accuracy of an output voltage of the voltage regulator...
Circuit and method for operating a circuit
In certain embodiments, a circuit comprises a first voltage source configured to provide a supply voltage at an output of the first voltage source for a...
Method and apparatus for controlling low voltage ride through of
photovoltaic grid-connected inverter
A method and an apparatus for controlling a Low Voltage Ride Through of a photovoltaic grid-connected inverter. The method for controlling comprises: judging...
Magnetic gear mechanism
The present invention is intended to provide a magnetic gear structure that realizes a magnetic gear that transmits a torque efficiently by reducing eddy...
Electromagnetic actuator for a surgical instrument
The invention relates to an electromagnetic actuator for a surgical or medical instrument, the actuator having a stator (19) and a displaceable element (10),...
Inertial drive actuator
An inertial drive actuator includes a displacement unit, a vibration substrate, a movable body, a first magnetic field generator which generates a magnetic...