| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 323303000 | Using a linearly acting final control device | 23 |
| 20080211476 | HIGH VOLTAGE SHUNT-REGULATOR CIRCUIT WITH VOLTAGE-DEPENDENT RESISTOR - A voltage regulator circuit comprising a first circuit functioning as a voltage dependent resistor, the first circuit having an input coupled to a voltage source and an output and having a resistance dependent on the voltage applied across the circuit by the voltage source such that the resistance increases as the applied voltage increases; and a regulator coupled to the output of the first circuit for providing a regulated output voltage. | 09-04-2008 |
| 20080246457 | Voltage up-conversion circuit - According to one exemplary embodiment, a voltage up-conversion circuit includes a modulated voltage generator circuit, where the modulated voltage generator circuit is configured to receive an input voltage and generate a modulated voltage, and where the modulated voltage generator circuit includes at least one transistor. The voltage up-conversion circuit further includes a switching circuit coupled to the modulated voltage generator circuit, where the switching circuit is configured to couple the modulated voltage to a load capacitor when the modulated voltage is at a high level and decouple the modulated voltage to the load capacitor when the modulated voltage is at a low level. In the voltage up-conversion circuit, the load capacitor reaches a voltage greater a breakdown voltage of the at least one transistor in the modulated voltage generator circuit. The breakdown voltage can be a reliability breakdown voltage. | 10-09-2008 |
| 20080284403 | High-side current sense circuit with common-mode voltage reduction - A high-side current sense circuit comprises a sense resistance R | 11-20-2008 |
| 20080309306 | Power control circuit with coupling circuit for controlling output power sequence and liquid crystal display using same - An exemplary power control circuit ( | 12-18-2008 |
| 20090174386 | Power Supply Start-Up and Brown-Out Inrush Management Circuit - A power supply device including a diode bridge, a converter module, and an inrush control module. The diode bridge is adapted to rectify an input voltage. The converter module is coupled to the diode bridge and is adapted to convert the input voltage into a direct current regulated output voltage. The inrush control module is connected to the diode bridge and is adapted to gradually activate a transistor and to limit an inrush current peak value based upon a zero crossing being detected in the input voltage. A method for limiting the inrush current peak value is also disclosed. | 07-09-2009 |
| 20090206817 | High Voltage Drive Circuit Employing Capacitive Signal Coupling and Associated Devices and Methods - According to one embodiment, there is provided a high voltage drive circuit comprising drive and sense electrodes formed substantially in a single plane. The device effects signal transfer between drive and receive circuits through the drive and sense electrodes by capacitive means, and permits high voltage devices, such as IGBTs, to be driven thereby without the use of high voltage transistors, thereby eliminating the need to use expensive fabrication processes such as SOI when manufacturing high voltage gate drive circuits and ICs. The device may be formed in a small package using, by way of example, using CMOS or other conventional low-cost semiconductor fabrication and packaging processes. | 08-20-2009 |
| 20100207596 | Power-up Control for Very Low-Power Systems - An input protection circuit (IPC) may prevent an input signal from propagating into a system, such as an integrated circuit (IC), when the voltage level of the input signal exceeds a specified value. The IPC may be configured to compare the input signal voltage, which may be that of an external input signal received by the system, with a reference voltage, which may be the power supply voltage. If the input signal voltage exceeds the reference voltage, the output of the IPC may be set to the value of a specified clamp voltage. If the input signal voltage does not exceed the reference voltage, the output of the IPC may track (or follow) the input signal voltage. For certain integrated circuits, the IPC may be configured to provide circuit protection for an input signal voltage ranging between 0V to 5V, and a power supply voltage ranging between 3.0V and 3.6V. | 08-19-2010 |
| 20110074377 | TIME CONSTANT CIRCUIT, SWITCH CIRCUIT, DC/DC CONVERTER, AND DISPLAY DEVICE - To provide a time constant circuit and the like capable of acquiring a characteristic of an output voltage that attenuates gradually after attenuating steeply, compared to a characteristic that attenuates monotonously. The time constant circuit includes: a series/parallel circuit formed by serially connecting a plurality of parallel circuits each formed with a resistance element and a capacitance element between a first terminal and a second terminal; and a voltage-dividing resistance element connected between a third terminal connected to the second terminal and a fourth terminal. A first parallel circuit is formed with a first resistance element and a first capacitance element, a second parallel circuit with a second resistance element and a second capacitance element, and an n-th parallel circuit with an n-th resistance element and an n-th capacitance element. Note that “n” is the number of the parallel circuits and it is an integer of 2 or larger. | 03-31-2011 |
| 20110273158 | Control Circuit for a DC-DC Converter - A control circuit according to an embodiment of the present invention for a DC-DC converter which has an input, an output and a series connection of a differentiator, a comparator unit, and an integrator. The series connection is coupled in between the input and the output. The comparator unit has an inverting amplifier. | 11-10-2011 |
| 20120139520 | Linear Regulator and Electronic Device Comprising Such a Linear Regulator - The invention relates to a linear regulator comprising input means configured to receive an input voltage, output means configured to deliver an output voltage, a shunt element coupled to said input means and said output means, and configured to be passed through by a current and to exhibit across its terminals a voltage drop independent of said current, controllable by-pass means coupled between said input means and said output means, and configured to have a first state for by-passing said shunt element and a second state for not by-passing said shunt element, and control means coupled to said input means and configured to place said by-pass means in their first state or in their second state depending on the value of said input voltage. The invention also relates to an electronic device comprising such a linear regulator. | 06-07-2012 |
| 20140132239 | Fully Integrated Adjustable DC Current Reference Based on an Integrated Inductor Reference - A novel fully integrated adjustable DC current reference is developed. The reference current is set by the ratio of a DC voltage generated using a band-gap reference and a tuned resistor based on an inductor reference. An AC signal is necessary to develop a relationship between the resistor tuned and the inductor reference. A computation unit which could be designed as an analog circuit is necessary to compute the value of the resistor in relationship to the reference inductor. Classic circuits are used to develop and analyze the relationship between the reference inductor and the tunable resistor that sets the DC current reference. Results show that the value of the inductance is insensitive to process, voltage and temperature variations. Therefore, assuming the DC bandgap reference voltage is insensitive to changes in process, voltage and temperature variations, so is the the DC current reference. | 05-15-2014 |
| 20140312872 | POWER SUPPLY CIRCUIT - A power supply circuit | 10-23-2014 |
| 20150008896 | CONSTANT RESISTANCE TO CONSTANT CURRENT/CONSTANT POWER START-UP - A constant current and constant power method and system for controlling current drawn from a voltage source uses an electronic load device such as one or more field effect transistors connected with the voltage source via a switch. The load device is configured as a resistance device. A constant resistance, a cutover voltage, and either a constant current or a constant power are set by the user for the voltage source. When the switch is closed, a fixed current is drawn from the voltage source to the load and the voltage from the source is measured. The measured voltage is compared with the cutover voltage. When the measured voltage is less than the cutover voltage, the current to the load is maintained in accordance with the measured voltage and the constant resistance. When the measure voltage exceeds the cutover voltage, the current to the load device is switched to a constant current or the load device is switched to constant power. This allows the voltage source to be gradually brought up to a desired output voltage. | 01-08-2015 |
| 20150022177 | ADAPTIVE LDO REGULATOR SYSTEM AND METHOD - An adaptive low dropout voltage regulator (LDO) circuit having low power dissipation, and a method of regulating voltage while maintaining low power dissipation. Power dissipation in an LDO circuit is controlled and held to a low value using an LDO circuit that maintains a constant voltage difference between Vin and Vout; that is, ΔV=Vin−Vout is approximately constant rather than linearly variable as a function of Vin. The output voltage Vout essentially tracks the input voltage Vin with an offset equal to ΔV; Vout increases as Vin, but is kept between minimum and maximum voltage output specification limits. | 01-22-2015 |
| 20150042304 | ELECTRONIC CIRCUIT FOR A WEIGHT-IN-MOTION SENSOR - An electronic circuit that changes a charge signal into a voltage signal within a sensor suitable for direct installation in a roadway can be connected to two single-core cables that need not be highly insulating yet can realize the required power supply of the electronics. The circuit includes an integrated impedance converter (IEPE) at the output to a two-core cable and a charge amplifier with an IC | 02-12-2015 |
| 20150102796 | PEAK DETECTOR FOR AMPLIFIER - Aspects of the disclosure provide a circuit for peak voltage detection. The circuit includes a diode-based peak detector and a compensation circuit. The diode-based peak detector has a first diode, and is configured to receive a signal for peak voltage detection and generate a first voltage of a stable level indicative of a peak voltage of the signal based on the first diode. The compensation circuit has a second diode. The compensation circuit is configured to receive the first voltage and generate a second voltage of a stable level that is independent of the first diode. | 04-16-2015 |
| 20150115928 | INPUT CIRCUIT - In aspects of the invention, a zap circuit and a decoder for decoding the output of the zap circuit turn ON only one analog switch in a selector. The selector delivers an electric potential at a node of a dividing resistor selected by the zap circuit. The output of the selector is delivered to the non-inverting input of an operational amplifier, and the output of the operational amplifier is delivered to the gate terminal of a MOSFET. The operational amplifier controls the gate of the MOSFET so that the potential at a current detecting resistor equals the output of the selector. As a result, a current proportional to the input voltage flows through the MOSFET. Because the current through a dividing resistor is also proportional to the input voltage, the total current is eventually proportional to the input voltage. | 04-30-2015 |
| 20150115929 | METHOD AND APPARATUS FOR GENERATING PIECE-WISE LINEAR REGULATED SUPPLY - The disclosure provides a voltage regulator for generating piece-wise linear regulated supply voltage. The voltage regulator includes a first clamp circuit that receives a reference voltage and an analog supply voltage. A second clamp circuit receives the reference voltage. A voltage divider circuit is coupled to the first clamp circuit and the second clamp circuit. The voltage divider circuit receives a peripheral supply voltage and generates a regulated supply voltage. | 04-30-2015 |
| 20150309528 | POWER SUPPLY VOLTAGE MONITORING CIRCUIT, AND ELECTRONIC CIRCUIT INCLUDING THE POWER SUPPLY VOLTAGE MONITORING CIRCUIT - Provided is a power supply voltage monitoring circuit capable of accurately detecting a power supply voltage with a small circuit scale and low power consumption. The power supply voltage monitoring circuit includes: a signal output circuit configured to output a signal voltage representing saturation characteristics with respect to an increase in power supply voltage; and a signal voltage monitoring circuit configured to output a signal representing that the signal voltage of the signal output circuit is normal, the signal voltage monitoring circuit including: a PMOS transistor including a gate connected to an output terminal of the signal output circuit; a first constant current circuit connected to a drain of the PMOS transistor; and an inverter including an input terminal connected to the drain of the PMOS transistor. | 10-29-2015 |
| 20150346758 | POWER SOURCE CIRCUIT - At normal times other than a restarting of an engine after being idling-stopped, a voltage Va | 12-03-2015 |
| 20150362944 | SYSTEMS AND METHODS FOR CABLE RESISTANCE COMPENSATION - The present disclosure includes circuits and methods for cable resistance compensation. In one embodiment, the present disclosure includes a circuit comprising a regulator coupled to receive an input voltage and an input current from an external power source across a cable, a voltage sensor coupled to sense the input voltage, a collapse detector coupled to detect whether or not the input voltage is below a first value, and a current limit circuit to control a maximum current in the regulator. The current limit circuit is reconfigured to a plurality of current limit values and the collapse detector detects if the input voltage from the external power source collapses below the first value at the plurality of current limit values. The voltage sensor measures different voltages at different input currents, and in accordance therewith, reduces collapse voltage value to compensate for a voltage drop caused by a resistance of the cable. | 12-17-2015 |
| 20150362945 | INTERNAL VOLTAGE GENERATION CIRCUIT OF SEMICONDUCTOR APPARATUS - An internal voltage generation circuit may include a first internal voltage generation block configured for receiving a first external voltage and for generating an internal voltage with a voltage level corresponding to a voltage level of a first reference voltage; and a second internal voltage generation block configured for receiving a second external voltage, generate the internal voltage with a voltage level corresponding to a voltage level of a second reference voltage, compare voltage levels of the second reference voltage and the internal voltage, and generate a comparison signal, wherein only one of the first and second internal voltage generation blocks is activated and the other is deactivated, in response to an enable signal, and the second internal voltage generation block disables the comparison signal to a voltage level of the first external voltage when the first internal voltage generation block is activated. | 12-17-2015 |
| 20180024585 | METHOD FOR OPTIMISING A WETTING CURRENT AND ADAPTED DEVICE FOR MONITORING SENSORS WITH CONTACT SWITCHES | 01-25-2018 |
