SHINDENGEN ELECTRIC MANUFACTURING CO., LTD. Patent applications |
Patent application number | Title | Published |
20160118492 | SEMICONDUCTOR DEVICE - A semiconductor device includes a drift layer | 04-28-2016 |
20160079347 | SEMICONDUCTOR DEVICE - It is an objective to improve reverse surge withstand capability of a semiconductor device, for example, a Schottky barrier diode. | 03-17-2016 |
20160020684 | POWER SUPPLY DEVICE - A power supply device includes a first inverter that converts a first direct-current voltage into a first alternating-current voltage and outputs the first alternating-current voltage, and a second inverter that has an output connected in series with an output of the first inverter and converts a second direct-current voltage into a second alternating-current voltage synchronized with the first alternating-current voltage and outputs the second alternating-current voltage. | 01-21-2016 |
20150369203 | IGNITION CONTROL APPARATUS AND IGNITION CONTROL METHOD - An ignition control apparatus ( | 12-24-2015 |
20150216012 | LED ILLUMINATION DIMMING CIRCUIT AND LED ILLUMINATION DIMMING METHOD - An LED illumination dimming circuit comprises a capacitor connected to the first output terminal at a first end thereof and to the second output terminal at a second end thereof; a coil connected to the second end of the capacitor at a first end thereof; a switch element connected to a second end of the coil at a first end thereof; a resistor connected to a second end of the switch element at a first end thereof and to the ground terminal at a second end thereof; a diode connected to the power supply terminal at a cathode thereof and to the second end of the coil at an anode thereof; and a controlling circuit that controls an operation of the switch element with a switch controlling signal. | 07-30-2015 |
20150189756 | MODULE, MODULE COMBINED BODY AND MODULE PRODUCTION METHOD - A module comprises a first insulating-substrate-side member that has a first insulating substrate, a first conductor layer provided on the first insulating substrate, and a first electronic element provided on the first conductor layer; a second insulating-substrate-side member that has a second insulating substrate, a second conductor layer provided on a lower side of the second insulating substrate, and a second electronic element provided on a lower side of the second conductor layer; and a sealing member that is provided between the first insulating substrate and the second insulating substrate. The first electronic element and the second electronic element are opposingly disposed. The first electronic element and the second electronic element are connected by an element connecting conductor post that has electric conductivity. | 07-02-2015 |
20150160324 | FAULT DETECTING APPARATUS AND COMPUTER PROGRAM THEREFOR - A fault detecting apparatus, to use an output current from a drive circuit as a current value detected by a current sensor, calculates a duty ratio of a control signal to be supplied to the drive circuit to define the duty ratio as a theoretical value of the duty ratio of the control signal. The fault detecting apparatus compares a duty ratio of a control signal actually supplied to the drive circuit with the theoretical value of the duty ratio of the control signal to determine whether the current sensor (fails on the basis of a comparison result. | 06-11-2015 |
20150160074 | TEMPERATURE DETECTING APPARATUS AND COMPUTER PROGRAM THEREFOR - A temperature detecting apparatus detects a temperature of a detection target having a switch element. The temperature detecting apparatus includes a current detecting unit and a temperature estimating unit. The current detecting unit detects an output current from the detection target changing depending on an on/off operation of the switch element. The temperature estimating unit, on the basis of a current value detected by the current detecting unit, calculates a conduction loss of the switch element and a switching loss of the switch element to estimate the temperature of the detection target on the basis of the calculated conduction loss and the calculated switching loss. | 06-11-2015 |
20150155244 | GLASS COMPOSITION FOR PROTECTING SEMICONDUCTOR JUNCTION, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE - A glass composition for protecting a semiconductor junction is made of fine glass particles prepared from a material in a molten state obtained by melting a raw material which contains at least SiO | 06-04-2015 |
20150053753 | COMPOSITE NANOMETAL PASTE CONTAINING COPPER FILLER AND JOINING METHOD - The present invention addresses the problem of providing a composite nanometal paste which is relatively low in price and is excellent in terms of bonding characteristics, thermal conductivity, and electrical property. | 02-26-2015 |
20140361416 | RESIN-SEALED SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING RESIN-SEALED SEMICONDUCTOR DEVICE - A resin-sealed semiconductor device | 12-11-2014 |
20140353851 | GLASS COMPOSITION FOR PROTECTING SEMICONDUCTOR JUNCTION, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE - Provided is a glass composition for protecting a semiconductor junction which contains at least SiO | 12-04-2014 |
20140312416 | SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE - A semiconductor device includes, in a cell region thereof: a low resistance semiconductor layer; a drift layer; a base region; a high-concentration semiconductor region; and a gate electrode layer. The semiconductor device includes, in a peripheral region thereof: the low resistance semiconductor layer; the drift layer; which is formed over the low resistance semiconductor layer; a gate lead line; a gate finger; and a gate pad. The gate electrode layer and the gate lead line are electrically connected with each other by way of a resistor made of polysilicon containing an impurity, and an impurity concentration in polysilicon which forms the resistor is lower than an impurity concentration in polysilicon which forms the gate electrode layer. | 10-23-2014 |
20140285158 | REGULATOR, BATTERY CHARGING APPARATUS AND BATTERY CHARGING METHOD - [Problem to be Solved] | 09-25-2014 |
20140232283 | DIRECTION INDICATING APPARATUS - To provide a direction indicating apparatus that is less susceptible to a change of a power supply voltage and can reduce the difference in brightness of a direction indicating lamp using an LED element between a direction indicating operation and a hazard operation. A direction indicating apparatus includes a pulse signal generating part, a first switching element, a variable resistor circuit, a direction indicating switch, a hazard switch, first and second direction indicating lamps, a voltage detecting part and a lighting status detecting part. | 08-21-2014 |
20140070769 | BRUSHLESS MOTOR CONTROL APPARATUS AND BRUSHLESS MOTOR CONTROL METHOD - Even in a situation other than engine normal operation such as engine stall, the output voltage of the three-phase brushless motor is prevented from causing the excessive voltage to be applied to an external load. | 03-13-2014 |
20140055066 | BRUSHLESS MOTOR CONTROL DEVICE AND BRUSHLESS MOTOR CONTROL METHOD - After a rotor of a three-phase brushless motor is previously moved by a simple control method to a predetermined rotary position, a motor is started-up. A brushless motor control device ( | 02-27-2014 |
20140035503 | THREE-PHASE MOTOR DRIVING APPARATUS AND THREE-PHASE MOTOR DRIVING METHOD - The three-phase motor driving apparatus according to an aspect of the present invention comprises a controlling part that estimates a rotational position of the three-phase brushless motor based on a reference pulse signal output by the rotor sensor according to a rotational position of the magnetic pole of the first phase of the rotor when the three-phase brushless motor rotates, and controls the motor driver in driving patterns sequentially prescribed so as to correspond to the estimated rotational position of the three-phase brushless motor. | 02-06-2014 |
20140035501 | BRUSHLESS MOTOR CONTROL DEVICE AND BRUSHLESS MOTOR CONTROL METHOD - Regarding a brushless motor control device and a control method, the phase voltage Vsu of any one phase of the three-phase brushless motor is detected by a sub-coil (Su) ( | 02-06-2014 |
20140028263 | CELL BALANCE CIRCUIT AND CELL BALANCE DEVICE - To provide a cell balance circuit and a cell balance apparatus with a low cost and with a compact size, and configured to equalize the charge voltages of rechargeable batteries when the rechargeable batteries are charged or discharged, while suppressing deterioration of the rechargeable batteries. A cell balance circuit AA includes a transformer T, a switch SW | 01-30-2014 |
20140014064 | DRIVE CONTROLLING APPARATUS AND DRIVE CONTROLLING METHOD - According to a drive controlling method, the engine is driven in the forward direction by a predetermined reference torque, and the position of the rotation angle of the engine driven in the forward direction is judged based on information concerning whether the rotation angle has passed through the first top dead center in the forward movement of the engine, the amount of forward movement of the engine driven in the forward direction and the amount of reverse movement of the engine driven in the reverse direction. | 01-16-2014 |
20130343093 | BIDIRECTIONAL DC-DC CONVERTER AND POWER SUPPLY SYSTEM - A bidirectional DC-DC converter comprises: a first low voltage-side input/output terminal and a second low voltage-side input/output terminal; a low voltage-side rectifying circuit connected to the first low voltage-side input/output terminal and the second low voltage-side input/output terminal; a first high voltage-side input/output terminal and a second high voltage-side input/output terminal; a high voltage-side rectifying circuit connected to the first high voltage-side input/output terminal and the second high voltage-side input/output terminal; a transformer connected between the low voltage-side rectifying circuit and the high voltage-side rectifying circuit; and a controlling circuit that controls operations of switching elements in the low voltage-side rectifying circuit and the high voltage-side rectifying circuit. The controlling circuit achieves soft switching of a switching element in the high voltage-side rectifying circuit in a step-down operation. | 12-26-2013 |
20130335040 | DRIVE CONTROLLING APPARATUS AND POWER GENERATION CONTROLLING METHOD - In a power generation controlling method, if a first peak of the inverse of the rotation number measured in a first cycle following a plurality of successive cycles is not equal to or lower than a second threshold, it is judged whether or not the first peak is equal to or higher than a third threshold, which is higher than the first threshold. Furthermore, if a second peak of the inverse of the rotation number measured in a second cycle following the first cycle is equal to or lower than a fourth threshold, a target voltage of power generation by a generator a rotating shaft of which is connected to a crank shaft of the four-stroke engine is changed from a normal state voltage to an in-acceleration voltage, which is lower than the normal state voltage. | 12-19-2013 |
20130309898 | CHARGING APPARATUS - When a power supply plug | 11-21-2013 |
20130308360 | POWER FACTOR CORRECTION CIRCUIT - Provided is a power factor correction circuit capable of reducing ringing sound of a transformer produced when an overshoot protection is effected. An output voltage control circuit performs constant voltage-control such that capacitor charge voltage of an output capacitor corresponds to a first voltage value, and when the capacitor charge voltage of the output capacitor reaches a second voltage value higher than the first voltage value, an overvoltage detecting unit detects the second voltage value. Further, a current limiting unit detects a value of a switching current through a switching element, and determines a limiting value of the level of the switching current. Then, the switching current is limited to the limiting value, and when an overvoltage detecting unit detects the second voltage value, a limiting value changing unit causes the current limiting unit to change the limiting value to decrease the value of the switching current. | 11-21-2013 |
20130306992 | SILICON CARBIDE SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME - A silicon carbide semiconductor device includes: a silicon carbide layer, a reaction layer which is in contact with the silicon carbide layer, a conductive oxidation layer which is in contact with the reaction layer, and an electrode layer which is formed over the reaction layer with the conductive oxidation layer interposed therebetween. A thickness of the conductive oxidation layer falls within a range of 0.3 nm to 2.25 nm. | 11-21-2013 |
20130257353 | BATTERY CHARGING APPARATUS - A battery charging apparatus includes a plurality of input terminals which are connected to respective phases of a three-phase AC dynamo, and a rectifying circuit including a plurality of rectifying elements and a plurality of switching elements. A switching element control unit and pulse generation unit are provided, for controlling the turning on/off of the switching elements, and for generating a pulse signal, respectively. The switching element control unit is configured to control the plurality of switching elements, and includes a potential difference detection unit configured to detect potential differences between potentials of input terminals, and a specifying unit configured to determine a phase order of AC outputs which are input to the input terminals. | 10-03-2013 |
20130181515 | Vehicle Power Supply System, Engine Control Unit, and Power Supply Method - A engine control unit comprises: a three-phase bridge circuit that has a first end connected to the first end of the first load and a second end connected to a ground, the three-phase bridge circuit performing commutation control on an alternating-current power supplied from the motor generator or driving the motor generator; a DC-DC converter connected between the first end of the three-phase bridge circuit and a second end of the control switch; a diode that has an anode connected to the battery connecting terminal and a cathode connected to the second end of the control switch; a voltage detecting circuit that detects a voltage of the battery connecting terminal; a first switch element connected between a second end of the coil and the ground; a second switch element connected between a second end of the first load and the ground; and a control circuit. | 07-18-2013 |
20130169218 | Regulator, Battery Charging Apparatus and Battery Charging System - A regulator comprises a rectifying circuit that rectifies an alternating current output from an output terminal of each phase of the three-phase alternating-current generator “ | 07-04-2013 |
20130154064 | GLASS COMPOSITION FOR PROTECTING SEMICONDUCTOR JUNCTION, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE - A glass composition for protecting a semiconductor junction contains at least SiO | 06-20-2013 |
20130147377 | DIRECTION INDICATION LAMP CONTROL DEVICE, DIRECTION INDICATION DEVICE, AND METHOD OF CONTROLLING DIRECTION INDICATION DEVICE - A direction indication lamp control device includes: a pulse signal generation unit that generates a pulse signal; a current control element having one end to which power supply voltage is supplied, a control terminal to which the pulse signal is supplied, and the other end which outputs a drive current, the other end of the current control element being connected to one end of an external direction indication switch, and the other end of the direction indication switch being connected to a direction indication lamp; and a leak detection unit that causes the pulse signal generation unit to decrease the amplitude of the pulse signal in a case where the drive current corresponding to a pulse wave of the pulse signal is equal to or less than a leak detection current value during a leak detection period. | 06-13-2013 |
20130140991 | DIRECTION INDICATION LAMP CONTROL DEVICE, DIRECTION INDICATION DEVICE AND WIRE DISCONNECTION DETECTION METHOD OF THE DIRECTION INDICATION DEVICE - A direction indication lamp control device includes: a current control element including an end which outputs a drive current having a magnitude corresponding to amplitude of a pulse signal; a current clamp unit which limits the drive current to a current upper limit value; a voltage clamp unit which limits a reference voltage to a voltage upper limit value; and a wire disconnection detection unit which outputs a wire disconnection detection signal in a case where the drive current corresponding to the pulse wave of the pulse signal is equal to or less than a wire disconnection detection value, or in a case where the reference voltage is equal to the voltage upper limit value. The current upper limit value is smaller than the drive current flowing through a direction indication lamp when the reference voltage is the voltage upper limit value. | 06-06-2013 |
20130119946 | BATTERY CHARGER AND BATTERY CHARGING METHOD - A rectification processor includes rectifier elements that control charge to batteries independently for each of the batteries. A charge-state detector detects charge states of the batteries from their voltages, and determines whether to select the batteries for charging in a half-cycle determined beforehand in accordance with the detected result. A synchronous signal detector detects a signal synchronized with the phase of the 3-phase alternate current (AC) generator from the 3-phase AC generator, and outputs a synchronous signal. A charge controller controls the charge in the rectification processor in synchronization with the 3-phase AC generator according to the synchronous signal from the synchronous signal detector, and, in accordance with the charge states of the batteries output from the charge-state detector, controls charge amounts to the battery/batteries that was determined for selection. | 05-16-2013 |
20130075873 | GLASS COMPOSITION FOR PROTECTING SEMICONDUCTOR JUNCTION, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE - Provided is a glass composition for protecting a semiconductor junction which contains at least SiO | 03-28-2013 |
20130060455 | ENGINE CONTROL UNIT, ENGINE CONTROL SYSTEM AND ENGINE CONTROL METHOD - An engine control method includes: a step of running the engine in a forward direction by driving a motor that applies a torque to a crank of the engine in the forward direction in a case where the crank angle of the engine does not lie in the first section; a step of removing any load from the motor in a case where the crank angle of the engine lies in the first section; a step of braking the motor in a case where it is determined in the sixth step that the crank angle of the engine lies in the second section; and a step of running the engine in the forward direction by driving the motor in the forward direction in a case where it is determined that there is the request for restart of the engine. | 03-07-2013 |
20130049705 | REGULATOR, BATTERY CHARGING APPARATUS AND BATTERY CHARGING SYSTEM - A regulator comprises a rectifying circuit that rectifies an alternating current output from an output terminal of each phase of the three-phase alternating-current generator “ | 02-28-2013 |
20120281440 | ISOLATED SWITCH-MODE POWER SUPPLY DEVICE - The present invention provides an isolated switch-mode power supply device capable of sufficiently reducing power consumption in a standby mode. An isolated switch-mode power supply device includes: a capacitor that supplies control power for controlling switching of a switching element; a first control unit that includes a constant current supplying unit that controls switching of the switching element; a switching element that connects or disconnects the first control unit and the capacitor; a capacitance element unit having a capacitor to which a constant current is supplied from the constant current supplying unit, a capacitor charge voltage of the capacitance element unit changing according to an outputted voltage in the standby mode; and a second control unit that controls power supply to the first control unit by closing or opening the switching element during a switching pause period in the standby mode according to the capacitor charge voltage of the capacitor. | 11-08-2012 |
20120114972 | Composite Nanometal Paste of Two-Metallic-Component Type, Bonding Method, and Electronic Part - Provided is a composite nanometal paste, whose layer, when sintered in an inert gas under no load, gives a metal layer that is equal or superior in electrical conductivity and thermal conductivity to conventional lead-rich solders. The composite nanometal paste contains, as metal components, composite metal nanoparticles comprising metal cores with an average particle diameter of d (nm) and an organic coating layer formed around the circumference, and metal filler particles having an average particle diameter of D (nm), and satisfies the first relation d05-10-2012 | |
20110241611 | BATTERY CHARGER, BATTERY CHARGING CIRCUITS, AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICES - Provided is a battery charging technique by which high efficiency of the battery charging can be always controlled no matter how the power consumption of the battery is changed. In a battery charger, a charging control circuit holds a charge/non-charge state of a battery during an arbitrary period of time in order to prevent the unbalance of phase voltages due to occurrence of transition between the charge/non-charge states during a short period of time and the reduction of the efficiency of the battery charging. Further, zero-crossing erroneous detection in a phase voltage of the output of a three-phase alternating-current generator due to noises is prevented. | 10-06-2011 |
20110241610 | BATTERY CHARGER, BATTERY CHARGING CIRCUITS, AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICES - There is provided a battery charging technique by which various battery charging control can be achieved even when power consumption of a battery is small. In a battery charger, in order not to turn OFF a power switch even when an ACG starting detection circuit recognizes that an output of a generator is not generated in a state in which the power consumption of the battery is small and the voltage of the battery is not dropping, a voltage of the battery in addition to phase terminal signals of a three-phase alternating-current generator is inputted to the ACG starting detection circuit, and the ACG starting detection circuit controls not to turn OFF the power switch when the output of the three-phase alternating-current generator is generated or when the voltage of the battery is equal to or higher than a predetermined voltage. | 10-06-2011 |
20110241068 | SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SEMICONDUCTOR DEVICE - A semiconductor device which can make the generation of gate parasitic oscillations more difficult than a semiconductor device of the related art is provided. The semiconductor device includes: a drift layer which is constituted of a reference concentration layer and a low concentration layer; a gate electrode structure; a pair of source regions, a pair of base regions, and depletion-layer extension regions which are formed in the reference concentration layer below the base regions, wherein the depletion-layer extension regions are formed such that a lower surface of the depletion-layer extension region is deeper than a boundary between the low concentration layer and the reference concentration layer and projects into the low concentration layers, and a dVDS/dt-decreasing diffusion layer which contains an n-type impurity at a concentration higher than the concentration of the impurity which the reference concentration layer contains and decreases dVDS/dt when the semiconductor device is turned off is formed on a surface of the reference concentration layer. | 10-06-2011 |
20110198617 | ELECTRODE, SEMICONDUCTOR DEVICE, AND METHOD FOR MANUFACTURING THE SEMICONDUCTOR DEVICE - Disclosed is a semiconductor device comprising a p-type SiC semiconductor and an ohmic electrode having an Ni/Al laminated structure provided on the p-type SiC semiconductor. The semiconductor device simultaneously has improved contact resistance and surface roughness in the ohmic electrode. The semiconductor device comprises an ohmic electrode ( | 08-18-2011 |
20110169015 | BIPOLAR SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SAME - Disclosed is a bipolar semiconductor device which is capable of reducing the surface state density of a bipolar transistor and increasing the current gain of the transistor, thereby improving the transistor performance. A bipolar semiconductor device ( | 07-14-2011 |
20110163738 | CURRENT DETECTION CIRCUIT AND TRANSFORMER CURRENT MEASURING SYSTEM - A current detection circuit and a transformer current measurement system are offered, in which when elements and circuit, which cannot operate originally unless a transformer with small excitation inductance is used, are connected to a primary side of the transformer, even if the transformer, whose excitation inductance is large, is used, transformer current (primary current and secondary current) can be measured without deteriorating operations of the elements and circuit. | 07-07-2011 |
20110095398 | BIPOLAR SEMICONDUCTOR DEVICE AND METHOD OF PRODUCING SAME - A bipolar semiconductor device includes a collector region that is an n-type low-resistance layer formed in one surface of a semiconductor crystal substrate, an n-type first high-resistance region on the collector region, a p-type base region on the first high-resistance region, an n-type low-resistance emitter region that is formed in another surface of the semiconductor crystal substrate, an n-type second high-resistance region between the emitter region and the base region so as to contact the emitter region, an n-type recombination suppressing region around the second high-resistance region so as to adjoin the second high-resistance region, and a p-type low-resistance base contact region which is provided so as to adjoin the recombination suppressing region, and which contacts the base region. Each of doping concentrations of the second high-resistance region and the recombination suppressing region is equal to or lower than 1×10 | 04-28-2011 |
20110039382 | Semiconductor device and method for manufacturing the same - A semiconductor device including a plurality of units having identical structures, each unit includes: a drain electrode; a drift layer that includes a low concentration layer on the drain electrode and a reference concentration layer on the low concentration layer, a gate electrode on the reference concentration layer; a pair of source regions that are provided on an upper surface of the reference concentration layer and in the vicinity of both ends of the gate electrode; a pair of base regions that surround outer surfaces of the source regions; a source electrode electrically connected to the source regions and the base regions; and a pair of depletion-layer extension regions that are respectively provided under the base regions in the reference concentration region. Boundaries between the depletion-layer extension regions and the low concentration layer are positioned lower than a boundary between the reference concentration layer and the low concentration layer. | 02-17-2011 |
20100237825 | Battery Charging Device and Delay Angle Control Method for Battery Charging Device - A battery charging device of the present invention has a rectifier portion that is formed by switching elements, and performs advance angle/delay angle control. An advance angle/delay angle amount in the advance angle/delay angle control is determined based on a differential voltage between the voltage of a battery and a predetermined target voltage. In this case, when a determined delay angle amount exceeds a delay angle limit value, delay angle control is performed using the delay angle limit value. Moreover, the power generation amount of an alternating current generator is detected, and the delay angle amount and power generation amount are stored. If the current delay angle amount is greater than the previous delay angle amount, and the previous power generation amount is greater than the current power generation amount, then the previous delay angle amount is set as the delay angle limit value. | 09-23-2010 |
20100158743 | METHOD OF MANUFACTURING MAGENTIC BODY - A method of manufacturing a magnetic body in which insulating magnetic powder particles are stacked and press-molded in a molding space, and wiring is formed on a surface of the insulating magnetic powder particles solidified by press molding is provided according to the present invention. The method includes: a first step S | 06-24-2010 |
20090250750 | TRENCH GATE POWER MOSFET - A trench gate power MOSFET ( | 10-08-2009 |
20090160408 | BATTERY CHARGING DEVICE, THREE-PHASE VOLTAGE GENERATING CIRCUIT, THREE-PHASE VOLTAGE GENERATION METHOD AND DELAY ANGLE CONTROL METHOD - In the battery charging device of the present invention, a U, V, W phase voltage generating circuit detects a voltage signal of a U phase sub-coil of a three-phase alternating current generator, and generates a signal of a triangular wave that is in synchronization with the U phase. Moreover, a first triangular wave is generated in synchronization with a phase from 0° to 180° of the U phase rectangular wave, and a second triangular wave is generated in synchronization with a phase from 180° to 360° of the U phase. In addition, a V phase rectangular wave is generated in which the level is inverted at a voltage point of two thirds the peak voltage of the first triangular wave, and in which the level is inverted at a voltage point of two thirds the peak voltage of the second triangular wave, and a W phase rectangular wave is generated in which the level is inverted at a voltage point of one third the peak voltage of the first triangular wave, and in which the level is inverted at a voltage point of one third the peak voltage of the second triangular wave. | 06-25-2009 |
20090073728 | POWER CONVERTER AND METHOD, AND TRIANGLE WAVE GENERATING CIRCUIT - A power converter that converts an AC power outputted from a generator into a DC power and supplies it to a battery (load). The power converter includes a thyristor (switch unit) connected between an output unit of the generator and the battery (load); and a gate control unit (control unit) for generating a triangle wave voltage having a constant peak voltage corresponding to each cycle of the AC power outputted from the generator, generating a differential voltage between the voltage supplied to the load via the switch unit and a predetermined target voltage, and controlling the conductive state of the switch unit based on the triangle wave voltage and the differential voltage. | 03-19-2009 |
20080315301 | Trench Gate Power Semiconductor Device - A trench gate power MOSFET ( | 12-25-2008 |