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| Number | Title | Issue Date |
| 7649401 | Driving circuit for an emitter-switching configuration of transistors A driving circuit for an emitter-switching configuration of transistors having first and second control terminals connected to the driving circuit, forms a controlled emitter-switching device having in turn respective collector, source and gate terminals. The drivin... | 01/19/2010 |
| 7570101 | Advanced insulated gate bipolar transistor gate drive A gate drive for an insulated gate bipolar transistor (IGBT) includes a control and protection module coupled to a collector terminal of the IGBT, an optical communications module coupled to the control and protection module, a power supply module coupled to the con... | 08/04/2009 |
| 7564294 | Inverter apparatus To provide a highly reliable inverter apparatus which discriminates long-cycle noise generated by the isolated signal transmission element from short-cycle dv/dt noise and induction noise. A low pass filter, band pass filter, and a switching means are provide... | 07/21/2009 |
| 7368901 | Sequential control circuit A sequential control circuit operates according to an input signal. When the input signal is determined at a first state, the sequential control circuit asserts a plurality of control signals in a predetermined sequence. When the input signal is determined at a seco... | 05/06/2008 |
| 7362148 | Device for controlling a semiconductor element A control device for controlling a load drive semiconductor element for driving a load has a test operation mode for measuring a leak current of the load drive semiconductor element. In the test operation mode, a control terminal of the load drive semiconductor elem... | 04/22/2008 |
| 7339210 | Compound semiconductor switching circuit device High resistance elements of 5 KΩ or more are connected near first and second control terminals between the first and second control terminals and respective crossing portion of first and second connectings. Even when a high frequency analog signal transmitted in a ... | 03/04/2008 |
| 7336118 | Inverter apparatus To provide a highly reliable inverter apparatus which discriminates long-cycle noise generated by the isolated signal transmission element from short-cycle dv/dt noise and induction noise. A low pass filter, band pass filter, and a switching means are provided betwe... | 02/26/2008 |
| 7301745 | Temperature dependent switching circuit A temperature dependent switching circuit comprises a first transistor with a threshold voltage Vth having a negative temperature coefficient. A diode having a forward voltage drop with a negative temperature coefficient coupled with its anode connected to the drain... | 11/27/2007 |
| 7283343 | Integrated reverse battery protection circuit for an external MOSFET switch A reverse battery protection circuits that provides an integrated reverse battery condition solution for protection of external NMOS switches during the reverse battery condition is disclosed herein. This reverse battery protection circuit minimizes power consumptio... | 10/16/2007 |
| 7279953 | Current switch and method of driving the same A method and apparatus for driving a current switch with a differential drive signal monitors both the temperature of the switch and the current through the switch. The method and apparatus dynamically control the amplitude of the drive signal as a function of the s... | 10/09/2007 |
| 7268606 | High-frequency signal switching An electronic signal processing apparatus has a signal switch with a first and a second transistor of normally-on type, having main current channels coupled between an internal node and a switch input and output, respectively. A diode provides a switchable signal co... | 09/11/2007 |
| 7265952 | Two-terminal protecting circuit An integrated circuit provides a load with back-flow and open-circuit protection and includes a load, a trigger circuit, and a shunt circuit. The integrated circuit provides large-size LED displays having series LED connection with back-flow and open-circuit protect... | 09/04/2007 |
| 7262638 | Current sense amplifier A current sense amplifier includes a pair of cross-coupled transistors, each transistor being connected between a respective input signal line and a respective output signal generating node, for amplifying voltage difference between the output signal generating node... | 08/28/2007 |
| 7262470 | Semiconductor device With a microwave FET, the internalized Schottky junction capacitance or pn junction capacitance is small and these junctions are weak against static electricity. However, with a microwave device, a protecting diode could not be connected since the increase of parasi... | 08/28/2007 |
| 7242238 | Drive circuit for voltage driven type semiconductor element A drive circuit for a voltage driven type semiconductor element, includes: an electrical charge discharge unit that discharges electrical charge from a gate terminal of a voltage driven type semiconductor element when the voltage driven type semiconductor element is... | 07/10/2007 |
| 7236340 | Gate control circuit for prevention of turn-off avalanche of power MOSFETs A switch in an inductive circuit is prevented from avalanche operation when the switch is turned off. By preventing avalanche, the associated EMI is reduced or eliminated. Switch avalanche can be prevented using an active component, such as a transistor, or a passiv... | 06/26/2007 |
| 7233179 | Output stage interface circuit for outputting digital data onto a data bus An output stage interface circuit (1) comprises a main bipolar transistor (Q1) coupling a data output terminal (5) to a first rail (2) to which the positive of the power supply voltage (VDD) is applied, and a substrate diffusio... | 06/19/2007 |
| 7224087 | Circuit for the control of a triac without galvanic isolation A circuit for controlling a bidirectional switch referenced to a first reference voltage by a control circuit supplied by a first voltage and referenced to a second reference voltage. The supply voltage of the control circuit is connected by a diode to a coupling ci... | 05/29/2007 |
| 7218164 | Emitter switching driving network to control the storage time A driving network for an emitter-switching circuit comprises a pair of cascode-configured transistors, the one of the bipolar type and the other of the MOS type, and the driving network is of the type comprising a driving block for respective conduction terminals an... | 05/15/2007 |
| 7202649 | High frequency switch circuit A high-frequency switch circuit is presented. The invention includes a pair of switches, a pair of inductors, and a pair of diodes. Inductors are electrically connected in series between the switches which are thereafter electrically coupled to a power source. Switc... | 04/10/2007 |
| 7202532 | Integrated circuit An integrated circuit includes at least two circuit components formed on a common semiconductor substrate. Each circuit component has a self-contained supply voltage system. Coupling circuits couple the supply voltage systems for the at least two circuit components.... | 04/10/2007 |
| 7203050 | NPN Darlington ESD protection circuit An electrostatic discharge protection (ESD) circuit includes an NPN Darlington circuit and an n-type metal oxide semiconductor (NMOS) transistor. The drain of NMOS transistor is connected to the input end of the NPN Darlington circuit. The source of NMOS transistor ... | 04/10/2007 |
| 7196551 | Current mode logic buffer Systems and methods provide current mode logic buffers and interface circuits. As an example, in accordance with an embodiment of the present invention, a CML buffer is disclosed that receives and/or provides multiple signal pairs having different common mode voltag... | 03/27/2007 |
| 7184481 | Audio reproducing apparatus and method A comparator (12) for compensating the pulse width of the drive control signal of a power amplifier (54) by using a sense signal of an offset voltage generated between the nodes (H, I) of the power amplifier (54) is provided to enlarge the time ... | 02/27/2007 |
| 7176755 | Transistor-based interface circuitry Among the embodiments of the present invention is an apparatus that includes a transistor, a servo device, and a current source. The servo device is operable to provide a common base mode of operation of the transistor by maintaining an approximately constant voltag... | 02/13/2007 |
| 7148736 | Power switch The power switch has a first transistor, a limiting transistor, and an auxiliary transistor. The first transistor has a load path and a control electrode. The limiting transistor, which limits a voltage drop across the load path of the first transistor, has a load p... | 12/12/2006 |
| 7132877 | Radiation tolerant solid-state relay The present invention provides a radiation-tolerant-solid-state-relay without radiation-hardened parts. A p-channel MOSFET provides power-switching functionality. In further detail, the solid-state-relay comprises a bias section, a control section, and a power-switc... | 11/07/2006 |
| 7119586 | Circuit arrangement for control of a semiconductor circuit A circuit arrangement for control of a regulated path and a semiconductor circuit (1) comprises a control connection, with an input, to which a switching signal (3) for control of the semiconductor circuit (1) is applied, an output, to which the... | 10/10/2006 |
| 7107977 | Ignition apparatus for internal combustion engine An ignition apparatus for an internal combustion engine, which is controlled by a control unit, includes a connector, an ignition coil assembly, an igniter and a capacitor. The connector is electrically connected with the control unit, and includes an input terminal... | 09/19/2006 |
| 7106121 | High frequency switch circuit One end of each of five resistors is connected to each of the two ends and the respective intermediate points of a cascade of four depression-type FETs, while the other ends of the five resistors are provided with a predetermined voltage. This configuration fixes th... | 09/12/2006 |
| 7106041 | Current mirror apparatus and method for reduced early effect A current mirror includes an output stage that responds to a change in mirror output voltage with a change in output stage current, and an output compensation stage that, in response to the change in output stage current, introduces an output compensation current to... | 09/12/2006 |
| 7102416 | High side switching circuit A high side switching circuit, comprising: a switching transistor; a charge pump drive circuit including a circuit for generating an oscillating signal; and a charge pump arranged to provide a gate drive voltage to the switching transistor in response to a control s... | 09/05/2006 |
| 7082020 | Electronic switching device and an operating method thereof A switching device includes at least one MOSFET switching element and at least one JFET protective element, which is connected electrically in series to the switching element and which limits the electric current to a maximum current (saturated current) and control ... | 07/25/2006 |
| 7053692 | Powergate control using boosted and negative voltages A powergating circuit includes an MOS circuit such as a memory circuit having a first power terminal and a second power terminal, a P-channel transistor having a drain coupled to the first power terminal of the MOS circuit, and an N-channel transistor having a drain... | 05/30/2006 |
| 7053676 | Circuit arrangement for generating a signal having a specific waveform with an adjustable voltage level A circuit arrangement for generating specific waveforms includes a controllable voltage transformer circuit for generating an output signal (VOUT) with a specific waveform, which increases the voltage of its output signal depending on a first control sign... | 05/30/2006 |
| 7046050 | High side NFET gate driving circuit A circuit that provides for a high side NFET gate driver that uses a circuit using only common capacitors, diodes, resistors, and transistors to create a high side NFET gate driver. The system is operated so that when there is a high input the NFET will turn off and... | 05/16/2006 |
| 7038500 | Circuit arrangement for controlling power semiconductor transistors A current regulated circuit arrangement for controlling a power semiconductor transistor, as example a MOSFET or IGBT power transistor, that includes at least two mirror-symmetrically arranged regulated power sources and an output voltage regulator. A first regulate... | 05/02/2006 |
| 6975146 | High side NFET gate driving circuit A circuit that provides for a high side NFET gate driver that uses a circuit using only common capacitors, diodes, resistors, and transistors to create a high side NFET gate driver. The system is operated so that when there is a high input the NFET will turn off and... | 12/13/2005 |
| 6956427 | Electrically insulated switching element drive circuit An electrically insulated type of switching element drive circuit supplies an AC voltage via a transformer to a control electrode drive circuit that controls a switching element, with the frequency or amplitude of the AC voltage being modulated in accordance with re... | 10/18/2005 |
| 6952128 | Polarity insensitive solid state switch A polarity insensitive solid state switch controlling a shunt load, wherein the switch includes first and second transistors connected in anti-parallel in series with the shunt load; and a longitudinal current sensor controlling the control electrodes of both transi... | 10/04/2005 |
