Abstract: A regulator and a method for regulating include sensing an input voltage at a sensing unit and outputting a sensed voltage to a sensed voltage node. A bypassing unit receives the input voltage, bypassing the sensing unit, and applies the input voltage to the sensed voltage node. A comparison unit compares a the sensed voltage from the sensed voltage node to a reference voltage and outputs a comparison result signal.

Abstract: A stabilizing current source circuit is provided. The stabilizing current source circuit is used for stabilizing a current provided by a current source, and the current of the current source increases when temperature rises. The stabilizing current source circuit comprises a current source circuit and an adjustment circuit. The current source circuit provides a current that increases when temperature rises. The adjustment circuit is coupled to the current source circuit and provides an input current that increases when temperature rises. The current of the current source is subtracted from the input current to generate a current source current which does not vary with temperature.

Abstract: A power supply circuit for a motherboard includes a first resistor, a second resistor, a Schottky diode, and a direct current (DC) voltage source. The Schottky diode includes a first anode, a second anode, and a cathode. The first anode of the Schottky diode is respectively coupled to terminals of the first and second resistors, another terminal of each of the first and second resistors is respectively coupled to a power supply and ground. The second anode of the Schottky diode is coupled to the DC voltage source, the cathode of the Schottky diode is coupled to a south bridge.

Abstract: An integrated circuit device includes: an internal circuit disposed on an inside area of the integrated circuit device; and at least one regulator circuit that generates a regulation voltage formed by stepping down a power supply voltage provided from outside, wherein an output terminal of the regulator circuit is connected to a first pad that is an external terminal of the integrated circuit device and a power supply line of the internal circuit, and the regulator circuit controls the state of the output terminal based on a plurality of control signals inputted respectively to a plurality of control terminals.

Abstract: The invention provides DC-DC converters comprising a load sensor, a variable Power MOS, and a Power MOS width controlling and driving device. The Power MOS width controlling and driving device is coupled between the load sensor and the variable Power MOS. The variable Power MOS comprises a plurality of PMOS transistors coupled in parallel and a plurality of NMOS transistors coupled in parallel. After the load sensor detects the load current of the DC-DC converter, the Power MOS width controlling and driving device conducts the PMOS and NMOS transistors according to the sensed load current to control the total size of the conduction paths that couple a transformed DC voltage output terminal to a source of an original DC voltage or ground.

Abstract: A method and a device, the device has ground voltage elevation compensation capabilities and includes: multiple current consuming components; a positive voltage supply input; a negative voltage supply input; and a compensation circuit, coupled to the negative voltage supply input and to a grounding element; wherein the compensation circuit is adapted to detect a ground voltage elevation resulting from a flow of excess consumption current through the grounding element, and in response couple the negative voltage supply input to the grounding element; wherein the excess current flows through the grounding element due to an increment in a current consumption of a current consuming element of the device.

Abstract: The locked phase active power current control circuit is composed of a DC source, an electronic switch, a driving transformer, a phase detecting unit, a current intercepting unit and a square wave controller. A DC signal provided by the DC source is converted into a square wave signal by the electronic switch for the driving transformer to operate a load. The electronic switch outputs the square wave signal to the phase detecting unit whereat a phase signal of the square wave is detected and the detected signal is transmitted to the current intercepting unit whereat the detected signal is compared with the current intercepted at the electronic switch, the driving transformer, or the load, and the comparison result is fed back to the square wave controller so as to set the operation frequency of the electronic switch. The essential principle of the present invention is based on the fact that the square wave is in phase with the first harmonic wave.

Abstract: A start-up circuit for a high voltage power distribution circuit includes a transistor, a current source which generates ramped current, an operational amplifier which is connected between the current source and the transistor and controls the transistor, a capacitor which is fed the generated ramped current from the current source and is charged by the generated ramped current, the capacitor being connected to the non-inverting input of the operational amplifier, and a feedback capacitor connected from the transistor output to the non-inverting input of the operational amplifier, which is fed the generated ramped current from the capacitor and is discharged. The transistor is fully enabled when the feedback capacitor is fully discharged.

Abstract: The present invention provides a highly reliable electric power converter reduced in parasitic inductance.

Abstract: A DC/AC inverter provided for transforming a DC voltage source into an AC power source, wherein the AC signal is used for driving a fluorescent lamp. The inverter comprises a half-bridge switch circuitry electrically connected to the DC voltage source, for outputting an AC signal, a resonant tank electrically connected between the half-bridge switch circuitry and the fluorescent lamp, for stepping up and filtering the AC signal into a high-voltage AC power source which is supplied to a load, and a controller feeding back an output of the fluorescent lamp, providing a pulse width modulation signal for turning on and off the half-bridge switch circuitry, such that the fluorescent lamp can operate consistently and provide a consistent brightness.

Abstract: A circuit having a first input and a second input configured to apply an alternating voltage, a first output and a second output configured to supply a rectified and regulated voltage, a rectifier bridge circuit having a current return circuit, a third transistor and a fourth transistor, and a controller configured to regulate the voltage between the first and the second output to a constant value. The current return circuit is connected to the first input, the second input and to the second output. The third transistor is configured as a series voltage regulator and is connected to the first input and the first output. The fourth transistor is configured as a series voltage regulator and is connected to the second input and the first output. The controller is coupled to a control input of the third transistor and to a control input of the fourth transistor. Further, a method for rectifying and regulating voltages of a circuit is provided. The circuit and the method can be used in a contactless chip card.

Abstract: A bootstrap circuit for a step-down chopper regulator IC includes an LDMOS transistor having a gate and a source connected to output terminals of a constant voltage circuit and a drain connected to a leader terminal of a boot voltage, and a bootstrap control circuit that performs control of turning on and off the LDMOS transistor so as to support high-speed oscillation without requiring expensive process and realize a stable step-down chopping action with a wide input voltage range.

Abstract: A control system that controls a switching circuit having a switching element and an inductive element coupled to an output of the switching element. The control system includes a switching control circuit that controls the switching element to operate the switching circuit in a first conduction mode of operation, such as a boundary conduction mode (BCM), in which current in the inductive element is maintained at a non-zero level during a first time period within each switching cycle. A conduction mode control circuit is configured for switching the switching circuit into a second conduction mode of operation, such as a discontinuous conduction mode (DCM), in which current in the inductive element is maintained at a non-zero level during a second time period within each switching cycle. The first time period differs from the second time period.

Abstract: A switching regulator. A pulse width modulation (PWM) unit comprises an output stage and generates a PWM driving signal to control the output stage, such that an inductor delivers an inductor current signal to the load, and a slope compensation unit outputs a slope compensation signal with a compensation slope proportional to a falling slope of the inductor current signal to the PWM unit according to the inductor current signal.

Abstract: A switching regulator for controlling transmit antennas of variable impedance, particularly transmit antennas of a keyless access authorization system in or for a vehicle, having an input terminal into which an antenna potential applied or appliable at the transmit antenna may be coupled, and having a control circuit designed to generate a compensation signal as a controlled variable for adapting the antenna potential to an actual output impedance and to establish a slope of the compensation signal depending on the actual antenna potential. The invention relates furthermore to a transceiver circuit with such a switching regulator and to a keyless access control system in or for a vehicle.

Abstract: The invention relates to an electronic device (5) in the form of a flexible multilayer film body, in particular an RFID transponder, and to a rectifier (52) for such an electronic device. The rectifier (52) has at least two organic diodes or organic field effect transistors each having at least one electrical functional layer composed of a semiconducting organic material. The rectifier (52) furthermore has two or more charging or charge-reversal capacitors which are connected up to the two or more organic diodes or organic field effect transistors in such a way that the charging or charge-reversal capacitors can be charged via different current paths.

Abstract: A method of controlling a power converter is used to interface to a power grid or supply network operating at a frequency (Fnet) that is nominally fixed (say at 50 Hz, for example) but which can be varied as a way of controlling power imbalanced within the network as a whole. The power converter can include a network bridge that operates in accordance with the pulse width modulation (PWM) strategy having a switching frequency (Fpwm), a nominal switching frequency (Fpwm_nom) and a number of pulses per period (Pulse_Number).

Abstract: The present invention is directed to a electrical wiring device that includes a housing having a plurality of line terminals. A cover assembly is coupled to the housing, the cover assembly including at least one set of receptacle openings disposed on either side of a central portion of the cover assembly. A plurality of receptacle terminals are disposed in the housing, each of the plurality of receptacle terminals being coupled to a corresponding one of a plurality of load terminal structures. Each of the plurality of receptacle terminals is in communication with a corresponding one of the at least one set of receptacle openings. A light assembly is disposed in the central portion of the cover assembly and coupled to the plurality of line terminals or the plurality of load terminals. The light assembly has a light transmission region disposed in the central portion. The light transmissive region occupies a substantial portion of a width of the cover assembly.

Abstract: A DC-to-DC converter with improved transient response, accuracy and stability is disclosed. The DC-to-DC converter includes a comparator, a driver, at least one switch and a stability circuit. The stability circuit receives a voltage signal based upon sensing one of the at least one switch. The configuration with elimination a current sensing resistor can create a simpler solution for the DC-to-DC converter.

Abstract: A circuit arrangement configured to drive a load is disclosed herein. The circuit arrangement comprises a first and a second supply potential terminal for application of a first supply potential and a second supply potential. A load terminal is provided between the first and second supply potential for connection of the load. The circuit arrangement further comprises a first transistor component of a first conduction type. The first transistor component includes a load path and a control terminal, with the load path connected between the first supply potential terminal and the load terminal. The circuit arrangement also comprises a freewheeling element. The freewheeling element is provided as a second transistor of a second conduction type connected up as a diode. The second transistor is connected between the load terminal and the second supply potential terminal. The first transistor component and the freewheeling element are integrated in a common semiconductor body.