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| Number | Title | Issue Date |
| 7999600 | Device and method for limiting Di/Dt caused by a switching FET of an inductive switching circuit A circuit for limiting di/dt caused by a main switching FET during its turn-off against an inductive switching circuit is proposed. The circuit for limiting di/dt includes an auxiliary inductor in series with the main switching FET for inducing an auxiliary inductiv... | 08/16/2011 |
| 7564292 | Device and method for limiting Di/Dt caused by a switching FET of an inductive switching circuit A circuit for limiting di/dt caused by a main switching FET during its turn-off against an inductive switching circuit is proposed. The circuit for limiting di/dt includes: An auxiliary inductor in series with the main switching FET for inducing an auxiliary ... | 07/21/2009 |
| 7362147 | Integrated circuit An integrated circuit is disclosed that includes a MOS output stage transistor, a gate terminal for applying a drive signal, which controls the turning on and off of the output stage transistor, a charge transistor, which when the output stage transistor is turned o... | 04/22/2008 |
| 7348826 | Composite field effect transistor A composite field effect transistor, in accordance with one embodiment, includes a zener diode, a junction field effect transistor and a metal-oxide-semiconductor field effect transistor. A gate of the junction field effect transistor is coupled to an anode of the z... | 03/25/2008 |
| 7312510 | Device using ambipolar transport in SB-MOSFET and method for operating the same A device using an ambipolar transport of an SB-MOSFET and a method for operating the same are provided. The SB-MOSFET includes: a silicon channel region; a source and a drain contacted on both sides of the channel region and formed of material including metal layer;... | 12/25/2007 |
| 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 |
| 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 |
| 7173474 | Load-generated drive, no quiescent current, techniques and circuits for high speed switching of transistors Techniques and circuits for high speed switching of transistors are provided. These techniques and circuits switch an output device while varying the drive current to the output device in proportion to the output current through the output device. In addition, these... | 02/06/2007 |
| 7170729 | Semiconductor integrated circuit device A semiconductor integrated circuit of the present invention includes, between a power line 1 and a ground line 2, an NMIS transistor 3 capable of supplying fixed signals with low and high levels to the outside, an NMIS transistor 6 having... | 01/30/2007 |
| 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 |
| 7071761 | Apparatus and method for reducing propagation delay A timer circuit is arranged for reduced propagation delay and improved stability at low supply voltages. The timer circuit includes a capacitor circuit, a voltage offset circuit, an inverter circuit, and a current source circuit. The current source circuit is arrang... | 07/04/2006 |
| 7050920 | Semiconductor device having a test circuit for testing an output circuit A method for testing an output circuit of a semiconductor device including a plurality of output circuits includes the step of turning ON p-ch and n-ch MIS transistors of a subject output circuit, turning ON and OFF one and the other, respectively, of p-ch and n-ch ... | 05/23/2006 |
| 7042182 | Electronically commutated motor operable directly from AC power network An electronically commutated motor (10) is adapted to be powered directly by an AC voltage (UAC) source, and comprises a permanent-magnet rotor (18), a stator having at least one winding phase (L1, L2, . . . , Ln), a rectifier ... | 05/09/2006 |
| 7042383 | High speed gain amplifier and method in ADCs An ADC implemented according to an aspect of the present invention contains a non-zero bit stage followed by a zero-bit stage. The non-zero bit stage generates a sub-code, which is used in generating a digital code corresponding to an input analog signal, and the ze... | 05/09/2006 |
| 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 |
| 7034600 | Method and apparatus for EMC-optimized actuation of a semiconductor switching element A semiconductor switching element has a control connection and a load path, with the load path connected in series with a load and a supply voltage is applied across the series circuit. The semiconductor switching element is actuated by providing a first charging cu... | 04/25/2006 |
| 7005910 | Feed-forward circuit for reducing delay through an input buffer An invention is provided for a feed forward circuit that reduces delay through an inverting circuit. The feed forward circuit includes an inverter having an input and an output, and an inverting circuit having an input and an output. The input of the inverting circu... | 02/28/2006 |
| 6992520 | Gate drive method and apparatus for reducing losses in the switching of MOSFETs Usually, in power converters, the load on a MOSFET is inductive, and the current cannot change rapidly. The drain current is the upper limit of the Miller current, so that if the gate current is larger than the drain current, the gate capacitance will continue to di... | 01/31/2006 |
| 6987414 | High frequency switch circuit A high frequency switch circuit including high frequency terminals which input/output a high frequency signal, high frequency semiconductor switch sections which are arranged on lines coupling the high frequency terminals, a DC potential isolating circuit which isol... | 01/17/2006 |
| 6975157 | Starter device for normally off JFETs A semiconductor switching device or amplifier combined in parallel with one or more active devices defined as starter devices. A starter device is used to reduce the terminal voltage of a switching device or amplifier to a dc level below about 0.4 volts which will t... | 12/13/2005 |
| 6967415 | Power source apparatus A power source apparatus comprising: a direct current power source to output a first voltage; a load driven with a second voltage higher than the first voltage; a booster converter to boost an output from the direct current power source to the second voltage; and a ... | 11/22/2005 |
| 6967520 | Gate drive circuit, which makes the gate-charge flow back to the load and the main power source A gate driving circuit having: a direct current power source; a driving signal source for outputting signal; a main switch device, having a gate terminal in which the signal outputted from the driving signal source is inputted, for controlling a conduction state bet... | 11/22/2005 |
| 6940319 | Device for controlling high and low levels of a voltage-controlled power switch A device for controlling a voltage-controlled switch, including two circuits respectively for setting to the high level and for setting to the low level a control terminal of the voltage-controlled switch, one at least of the circuits including a power transistor ca... | 09/06/2005 |
| 6917227 | Efficient gate driver for power device A power module includes a power semiconductor device having a first terminal, a second terminal, and a third terminal. The second terminal is a control terminal to regulate flow of electricity between the first and third terminals. A gate driver has an output node c... | 07/12/2005 |
| 6879190 | Low-power driver with energy recovery The present invention provides an energy recovering driver that includes a pull-up control, a pull-down control and a transmission gate. The pull up control is responsive to a pull-up control signal and a clock signal to turn the transmission gate ON and OFF and pre... | 04/12/2005 |
| 6861892 | Load-generated drive, substantially no quiescent current, techniques and circuits for high speed switching of transistors Techniques and circuits for high speed switching of transistors are provided. These techniques and circuits switch an output device while varying the drive current to the output device in proportion to the output current through the output device. In addition, these... | 03/01/2005 |
| 6844759 | Method and circuit for eliminating charge injection from transistor switches A method for reducing charge injection from a field effect transistor switch in a circuit being controlled by a timing signal having an operation cycle with at least a first phase and a second phase. A charge density is changed in at least one layer in a channel in ... | 01/18/2005 |
| 6819149 | Gate drive device for reducing a surge voltage and switching loss In a circuit having MOS transistors connected in series, a surge voltage that occurs during off periods is reduced, while suppressing an increase in switching loss at turning off of the MOS transistors. When a first power MOSFET (1) is turned off and then a s... | 11/16/2004 |
| 6809559 | Method of forming a power device and structure therefor A method of forming a power device (10) includes forming a power transistor (27) and a pull-down transistor (28) on a semiconductor die (36). The pull-down transistor (28) is enabled to rapidly and predictably disable the power tra... | 10/26/2004 |
| 6690213 | Chopper type comparator A chopper type comparator is equipped with an input switching circuit 1 that switches between an input voltage VIN and a reference voltage VRE, a capacitor C1, and an amplification circuit 11 that is formed from amplifiers... | 02/10/2004 |
| 6661275 | Circuit arrangement and method for discharging at least one circuit node In a circuit arrangement for discharging at least one circuit node, an input and at least one output connectible to the at least one circuit node are provided along with at least one controllable resistor, a capacitor and a diode. A first terminal of the ... | 12/09/2003 |
| 6624683 | Threshold voltage reduction of a transistor connected as a diode A circuit design of a transistor connected as a diode, in particular to a design able to reduce the threshold voltage of the transistor and equal to the difference of the threshold voltage of the used transistors in the circuit disposal. The circuit desig... | 09/23/2003 |
| 6614289 | Starter device for normally off FETs A semiconductor switching device or amplifier combined in parallel with one or more active devices defined as starter devices. A starter device is used to reduce the terminal voltage of a switching device or amplifier to a dc level below about 0.4 volts w... | 09/02/2003 |
| 6614288 | Adaptive drive circuit for zero-voltage and low-voltage switches A circuit for controlling the switching behavior of a field effect transistor (FET) or other power switch in a power supply or converter. The circuit includes an adaptive feedback loop which controls the switching operation of the FET through application ... | 09/02/2003 |
| 6531909 | Load-generated drive, substantially no quiescent current, techniques and circuits for high speed switching of transistors Techniques and circuits for high speed switching of transistors are provided. These techniques and circuits switch an output device while varying the drive current to the output device in proportion to the output current through the output device. In addi... | 03/11/2003 |
| 6518834 | Circuit and method for reducing leakage current within an electronic system A circuit for reducing leakage current through one or more output transistors (312) includes a capacitor circuit (302) and additional circuitry. The capacitor circuit (302) stores and discharges a charge, thus providing a current having a limited duration... | 02/11/2003 |
| 6469549 | Apparatus and method for odd integer signal division The present invention provides a method and/or circuit for achieving a near 50 percent duty cycle divide-by-odd-integer output of an input reference clock.... | 10/22/2002 |
| 6429701 | Drive circuit for semiconductor power device and semiconductor switching circuit using the drive circuit In the initial stage of the operation of turning off a semiconductor device, the impedance of a carrier pull out circuit remains low for rapidly pulling out the stored carriers from the control electrode of the device. When the turn-off transition of the ... | 08/06/2002 |
| 6407594 | Zero bias current driver control circuit Static current consumption in a low-side output drive stage is eliminated by employing a switch in series with a current generator that is employed for controlling the discharge process of the driving node (gate) of the output power transistor and by cont... | 06/18/2002 |
| 6400207 | Quick turn-on disable/enable bias control circuit for high speed CMOS opamp Bias circuitry of an electronic circuit is disabled by interrupting a compensated feedback loop in a bias control circuit that, when enabled, produces a predetermined bias voltage (VBIAS+) applied to the bias circuitry. A trickle charging curre... | 06/04/2002 |
