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33results about How to "Reduce static loss" patented technology
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Vehicle and charging control method and system used for vehicle low-voltage battery
ActiveCN105922873AReduce static lossElectric powerVehicular energy storageLow voltageCurrent voltage
The invention discloses a vehicle and a charging control method and system used for a vehicle low-voltage battery. The charging control method comprises the following steps that after the vehicle enters a still standing state, a vehicle controller enters a low power consumption timing mode and starts timing; when the timed time reaches the wake-up time stored in the vehicle controller, the vehicle controller is woken up, the current voltage of the low-voltage battery is detected through the vehicle controller, and whether the current voltage of the low-voltage battery is smaller than or equal to the preset lower electric quantity voltage threshold value or not is judged; and if the current voltage of the low-voltage battery is smaller than or equal to the preset lower electric quantity voltage threshold value, the vehicle controller controls a DC / DC converter to work so that the low-voltage battery can be charged. According to the charging control method used for the vehicle low-voltage battery, when the timed time reaches the wake-up time, the current voltage of the low-voltage battery is judged so as to determine whether charging is conducted, and thus the low-voltage battery can be charged according to the actual demand; and in addition, the still standing loss of the vehicle can be reduced.
Owner:BEIJING ELECTRIC VEHICLE
Soft-starting circuit of power supply
InactiveCN101640412AReduce static lossReduce lossEmergency protective arrangements for limiting excess voltage/currentPower conversion systemsEnergy storagePower control
The invention relates to a soft-starting circuit of power supply, belonging to the technical field of power control. The soft-starting circuit is arranged between the power supply and a main body unit. One input end of the main body unit is connected with an output end of the power supply. The soft-starting circuit comprises a switch unit, a current limit unit, an energy storage unit and a controlunit, wherein the switch unit is connected with the current limit unit in parallel, the front end of a parallel branch thereof is connected to another output end of the power supply, and the rear endof the parallel branch is connected to one end of the energy storage unit and another output end of the main body unit; the other end of the energy storage unit is connected to one output end of thepower supply; a first end of the control unit is connected to a control end of the switch unit, and a second end of the control unit is connected to a control end of the main body unit; and the control unit controls the disconnection and the connection of the switch unit so as to control the power supply to supply power to the main body unit. The technical scheme can reduce the energy consumptionand protect the power supply.
Owner:ZTE CORP
BUCK-BOOST type DC converter and control method thereof
ActiveCN107959421AStable outputReduce power consumptionEfficient power electronics conversionEmergency protective circuit arrangementsMode controlControl signal
The disclosure relates to a BUCK-BOOST type DC converter and a control method thereof; the converter comprises a BUCK-BOOST circuit module, a drive module, an output voltage sampling module, a mode control module and a current detection module; the current detection module is in middle phase connection with the BUCK-BOOST circuit module, used for detecting inductance current in the BUCK-BOOST circuit, and sending current detection signals to the mode control module; the mode control module can form a corresponding PWM mode control signal or a PSM mode control signal according to the current detection signal and an output voltage sample signal; according to the PWM mode control signal or the PSM mode control signal, the drive module drives the BUCK-BOOST circuit to work in a BUCK mode, a BOOST mode or a BUCK-BOOST mode under the PWM mode, or to work in the BUCK-BOOST mode under the PSM mode. The DC converter can output a stable voltage in a full load range, and the switch tube power consumption and circuit static loss can be reduced in a mode switching process, thus improving the conversion efficiency.
Owner:BEIJING XIAOMI PINECONE ELECTRONICS CO LTD
Charging system based on secondary control and secondary control device thereof
ActiveCN105529799AConstant output powerDoes not affect battery lifeBatteries circuit arrangementsEfficient power electronics conversionSwitching signalConductor Coil
The invention discloses a charging system based on secondary control, which comprises a transformer, a rectifier device, a secondary rectifier switch transistor, a secondary synchronous rectifier auxiliary chip, a primary control chip and a primary switch transistor, wherein the secondary synchronous rectifier auxiliary chip controls opening and closing of the secondary rectifier switch transistor, the secondary rectifier switch transistor is controlled according to a received transmission signal of a charging interface to regulate an abrupt voltage generated at two ends of a secondary winding, and the regulated abrupt voltage is fed back to an auxiliary winding to generate an output voltage switching signal; the primary control chip acquires the output voltage switching signal and then generates a gating signal, and according to the gating signal, the voltage detected by the voltage detection end and the feedback voltage of the voltage feedback end, the primary switch transistor is controlled to regulate the output voltage and the output current of the system. According to the charging system of the invention, the charging output specifications can intelligently change according to a load. The invention also discloses a secondary control device for the charging system based on secondary control.
Owner:BYD SEMICON CO LTD
Solar controller circuit
ActiveCN105098957AReduce static lossImprove securityEnd cell switching arrangementsElectrical batteryControl signal
The invention discloses a solar controller circuit which comprises a main battery, a standby battery, a circuit switching module, an MCU and a voltage dividing module. The anode of the main battery is connected with the first end of the voltage dividing module, the second end of the voltage dividing module is connected with the input end I1 of the MCU, the first end of the circuit switching module is connected with the anode of the main battery or the anode of the standby battery, the second end of the circuit switching module is connected with the first output end O1 of the MCU, and the cathode of the main battery and the cathode of the standby battery are connected with the second output end O2 of the MCU. When the voltage dividing module detects that the voltage of the main battery is lower than or equivalent to a preset voltage threshold, the MCU transmits a switching control signal to the switching control module, the circuit switching module receives the switching control signal, and the first end, which is connected to the anode of the main battery, of the circuit switching module is connected to the anode of the standby battery. The solar controller circuit is conducive to reducing the static loss and improves the safety level.
Owner:MOSO POWER SUPPLY TECH
Switching converter and control circuit thereof
PendingCN114257066AImprove efficiencyReduce static lossDc-dc conversionElectric variable regulationHemt circuitsEngineering
The invention discloses a switching converter and a control circuit thereof. The control circuit comprises a first error amplifier, a logic and driving circuit and a reference voltage generating circuit. The reference voltage generating circuit performs intermittent sampling and holding according to the DC input voltage to generate the reference voltage, the reference voltage generating circuit is only started for a period of time in each clock period, and the stability of the reference voltage is maintained through the holding stage in the remaining time of the clock period, so that the stability of the DC output voltage is ensured, and the stability of the DC output voltage is ensured. And extremely low static power consumption can be realized, the efficiency of the switching converter in a light load state is improved, and the switching converter with ultra-low power consumption is realized.
Owner:SG MICRO
Digital pressure switch
InactiveCN102236334AImprove reliabilitySuppress interferenceProgramme control in sequence/logic controllersMicrocomputerMicrocontroller
The invention discloses a digital pressure switch, comprising a CPU single chip microcomputer taken as a controller as well as a power supply module, a sensor module and a warning and control module which are connected with the CPU single chip microcomputer, wherein a power driver module which has fast response speed, is provided with a freewheel diode and protects a circuit board from being influenced by a back electromotive force is connected between the CPU single chip microcomputer and the warning and control module; and a signal processing module which can inhibit common-mode interference and improve antijamming capability is connected between the CPU single chip microcomputer and a sensor. The digital pressure switch has the characteristics of good stability, high accuracy and long service life.
Owner:ZHAOQING ZHICHENG PNEUMATIC
Undervoltage lock-out circuit having dynamic filtering function
PendingCN108832595AWith dynamic filter functionFilter time reductionArrangements responsive to undervoltageTime changesVIT signals
The invention provides an undervoltage lock-out circuit having a dynamic filtering function. The undervoltage lock-out circuit comprises a reference circuit, a power supply sampling circuit, a comparator and a filter circuit. A filter circuit in the prior art is replaced by a dynamic filter circuit. The two paths of output signals of the power supply sampling circuit are output to one input end ofthe comparator and one input end of the dynamic filter circuit; the two paths of output signals of the reference circuit are output to the other input end of the comparator and the second input end of the dynamic filter circuit; and the output of the comparator is output to the third input end of the dynamic filter circuit. The filtering time of the dynamic filter circuit is controlled by the three paths of output signals simultaneously, and the filtering time changes with the power supply voltage, that is, the larger the drop amplitude of the power supply voltage is, the smaller the filtering time is, thereby realizing dynamic filtering; and the dynamic filter circuit outputs a feedforward signal to the power supply sampling circuit, and thus the output of the dynamic filter circuit is updated continuously.
Owner:无锡安趋电子有限公司
Low-voltage transformer area load non-power-cut switching system and working method thereof
ActiveCN113595227ASimplify live working stepsImprove reliabilityPower network operation systems integrationSingle network parallel feeding arrangementsTransformerPower grid
The invention discloses a low-voltage transformer area load non-power-cut switching system and a working method thereof, and relates to the technical field of electric power operation, maintenance and power supply. At present, power-off switching is needed during power grid maintenance. The system comprises a main conductive branch, a short-time conductive branch, a commercial power bypass, a control circuit and a current / voltage signal acquisition module. The main conductive branch comprises a second circuit breaker Q2; one end of the second circuit breaker Q2 is connected with the mobile box transformer substation / power van S1, and the other end of the second circuit breaker Q2 is connected with the wire outlet end of the low-voltage distribution box JP1; the short-time conductive branch comprises an electronic solid-state switch D1; the short-time conductive branch is connected in parallel with the second circuit breaker Q2; the commercial power bypass comprises a first circuit breaker Q1; and one end of the first circuit breaker Q1 is connected with the wire outlet end of the low-voltage distribution box JP1, and the other end of the first circuit breaker Q1 is connected with the wire inlet end of the low-voltage distribution box JP1. According to the technical scheme, the solid-state electronic solid-state switch D1 bears the transient process, the short-time power failure phenomenon caused by breaking of a mechanical contact is avoided, and therefore non-power-cut switching of the load between the power grid and the standby power supply is achieved.
Owner:HANGZHOU ELECTRIC EQUIP MFG +2
Charging system based on secondary control and its secondary control device
ActiveCN105529799BConstant output powerDoes not affect battery lifeBatteries circuit arrangementsEfficient power electronics conversionSignal onConductor Coil
The invention discloses a charging system based on secondary control, comprising: a transformer; a rectification device; a secondary rectification switch tube and a secondary synchronous rectification auxiliary chip, and the secondary synchronous rectification auxiliary chip controls the opening and closing of the secondary rectification switch tube , and control the secondary rectifier switch tube according to the received transmission signal of the charging interface to adjust the sudden voltage generated at both ends of the secondary winding, and generate an output voltage switching signal when the adjusted sudden voltage is fed back to the auxiliary winding; the primary The control chip and the primary switch tube, the primary control chip generates a gate signal when it collects the output voltage switching signal, and controls the primary switch tube according to the gate signal, the voltage detected by the voltage detection terminal and the feedback voltage of the voltage feedback terminal to adjust the system output voltage and output current. The charging system can intelligently change the charging output specification according to the load. The invention also discloses a secondary control device of the charging system based on secondary control.
Owner:BYD SEMICON CO LTD
PN junction gate-controlled gallium oxide field effect transistor and preparation method thereof
InactiveCN112164724AImprove breakdown voltageLower on-resistanceSemiconductor/solid-state device manufacturingSemiconductor devicesGate leakage currentField effect
The invention discloses a PN junction gate-controlled gallium oxide field effect transistor and a preparation method thereof, and mainly solves the problems of effective p-type doping of a gallium oxide material and bipolar structure loss of a gallium oxide-based device at present. The transistor comprises an insulating substrate and an n-type beta-Ga2O3 thin film layer from bottom to top, a source electrode and a drain electrode are arranged at the two ends of the n-type beta-Ga2O3 thin film layer, a gate electrode is arranged in the middle area, and Al2O3 protection layers are arranged on the n-type beta-Ga2O3 thin film layer between the gate electrode and the source electrode and between the gate electrode and the drain electrode and on the inner surfaces of the source electrode and thedrain electrode. A p-type NiO thin film layer is arranged between the n-type beta-Ga2O3 thin film layer and the gate electrode, and the p-type NiO thin film layer and the n-type beta-Ga2O3 thin filmform a p-n junction. According to the invention, the on-resistance and the gate leakage current of the device are reduced, the voltage endurance capability of the device is improved, the static loss of the device is reduced, and the method can be used for preparing a normally-off high-voltage-withstanding gallium oxide device.
Owner:XIDIAN UNIV
Audio voltage following circuit, audio product and voltage following method
PendingCN113259815AImprove power supply efficiencySolve lossSignal processingLoudspeaker signals distributionTelecommunicationsAudio power amplifier
The invention discloses an audio voltage following circuit, an audio product and a voltage following method. The audio voltage following circuit comprises an audio digital processing module, a boosting module and a power amplification module, and the audio digital processing module is used for calculating an audio peak value according to an input audio data signal and generating a voltage control signal and an audio signal according to the audio peak value; the boosting module is connected with the audio digital processing module; the boosting module is used for generating a following voltage signal according to the voltage control signal; the power amplification module is connected with the audio digital processing module and the boosting module; and the power amplification module is used for amplifying the power of the audio signal according to the following voltage signal. According to the technical scheme provided by the invention, the hardware cost is reduced, the audio voltage changes along with the audio data signal, the static loss is reduced, and the power supply efficiency of the power amplifier is improved.
Owner:GUOGUANG ELECTRIC
Battery power supply circuit and power source with same
ActiveCN105098918AReduce static lossExtended use timeBatteries circuit arrangementsEfficient power electronics conversionInput controlComputer module
The invention discloses a battery power supply circuit and a power source with the same. The battery power supply circuit comprises a delay module used to delay the transmission of an input voltage to an input control chip, an input control module used to transmit the input voltage to a voltage control module when a post-stage circuit is in a non-dormant mode, an input filter module used to filter the input voltage transmitted by the input control module to the voltage control module, the voltage control module used to boost the input voltage and output the boosted input voltage to the post-stage circuit through an output filter module when the input voltage transmitted by the input control module is lower than the voltage required by the post-stage circuit, and the output filter module used to filter an output voltage signal output by the voltage control module to the post-stage circuit. By adopting the battery power supply circuit and the power source of the invention, the static loss and standby loss of a booster circuit are reduced, the service time of batteries is prolonged, and the utilization rate of batteries is increased.
Owner:QINGDAO GOERTEK
Shield gate groove type field effect transistor and preparation method thereof
PendingCN114141875AReduce doping concentrationLower specific on-resistanceSemiconductor/solid-state device manufacturingSemiconductor devicesEngineeringField effect
The invention relates to a shield gate trench type field effect transistor and a preparation method thereof. The transistor comprises a substrate region, a drift region, a shield gate, a control gate, a matrix region, a source region, an insulating layer, a source electrode, a drain electrode and a metal gate electrode, the drift region, the base region, the source region and the source electrode are sequentially arranged above the substrate region, the drain electrode is arranged below the substrate region, and the control gate and the shield gate are arranged on one side of the drift region from top to bottom; the substrate region, the drift region and the source region are all N-type doped; the doping concentration of the substrate region and the doping concentration of the source region are both larger than the doping concentration of the drift region. The substrate region, the shield gate and the control gate are all P-type doped; the doping concentration of the shield grid is the same as that of the drift region; and the doping concentration of the control grid is greater than that of the shielding grid. According to the scheme provided by the invention, a peak electric field introduced by an electric field concentration effect caused by a relatively small curvature radius at a corner of the shielding grid can be effectively improved, and an effect of improving a breakdown voltage is achieved, so that the specific on-resistance of the device is reduced.
Owner:无锡先瞳半导体科技有限公司
A vehicle charge controller static loss control system
ActiveCN102624038BRealize monitoringReduce static lossBatteries circuit arrangementsElectric powerElectricityControl system
Owner:NINGBO BYD AUTO CO LTD
Preparation method of split gate MOSFET device and split gate MOSFET device
PendingCN112289850AImprove electric field distributionReduce static lossTransistorSemiconductor/solid-state device manufacturingMOSFETElectrical resistance and conductance
The invention relates to the technical field of semiconductors, in particular to a preparation method of a split gate MOSFET device and the split gate MOSFET device. The method comprises the steps of:S1, providing a substrate, forming an epitaxial layer on the substrate, and enabling the width of the bottom surface of the epitaxial layer to be equal to the width of the top surface of the substrate; wherein the corresponding resistivity of the epitaxial layer is changed in a non-uniform gradual change manner from bottom to top. The preparation method has the beneficial effects that: the epitaxial layer is formed on the substrate, and the corresponding resistivity of the epitaxial layer from bottom to top is changed in a non-uniform gradual change manner, so that the internal electric fielddistribution of the device is optimized, the coverage area of two-dimensional breakdown electric field lines at the same position of the device with the same size is larger, and while the electric field intensity is improved, the intensity of the electric field close to the substrate direction is obviously increased, and a depletion region is broadened downwards, so that the breakdown voltage isimproved, and the on-resistance and the static loss of the device are reduced under the same target voltage.
Owner:SHANGHAI CHANGYUAN WAYON MICROELECTRONICS
Gate-controlled gallium oxide field effect transistor based on p-i-n structure and its preparation method
ActiveCN112133757BImprove breakdown voltageImprove withstand voltage characteristicsSemiconductor/solid-state device manufacturingSemiconductor devicesThin membraneField effect
Owner:XIDIAN UNIV
Soft-starting circuit of power supply
InactiveCN101640412BReduce static lossReduce lossEmergency protective arrangements for limiting excess voltage/currentPower conversion systemsEngineeringEnergy storage
Owner:ZTE CORP
A battery power supply circuit and a power supply with the same
ActiveCN105098918BReduce static lossExtended use timeBatteries circuit arrangementsEfficient power electronics conversionComputer moduleInput control
Owner:QINGDAO GOERTEK
A solar controller circuit
ActiveCN105098957BReduce static lossImprove securityEnd cell switching arrangementsElectrical batteryControl signal
The embodiment of the present invention discloses a solar controller circuit. The solar controller circuit includes a main battery, a backup battery, a circuit switching module, an MCU, and a voltage divider module. One end; the second end of the voltage divider module is connected to the input terminal I1 of the MCU; the first end of the circuit switching module is connected to the positive pole of the main battery or the positive pole of the backup battery, and the second end of the circuit switching module is connected to the first output terminal of the MCU O1; the negative pole of the main battery and the negative pole of the backup battery are connected to the second output terminal O2 of the MCU; the MCU is used to use the voltage divider module to send The switching control signal, the circuit switching module is used to receive the switching control signal, and switch the first end of the circuit switching module from being connected to the positive pole of the main battery to being connected to the positive pole of the backup battery. Implementing the embodiment of the present invention is beneficial to reducing static loss and improving safety.
Owner:MOSO POWER SUPPLY TECH
Buck-boost DC converter and its control method
ActiveCN107959421BStable outputReduce power consumptionEfficient power electronics conversionEmergency protective circuit arrangementsConvertersMode control
The present disclosure relates to a BUCK-BOOST DC converter and a control method thereof. The converter includes a BUCK-BOOST circuit module, a drive module, an output voltage sampling module, a mode control module and a current detection module, and the current detection module is connected to the BUCK-BOOST circuit module for detecting the inductance in the BUCK-BOOST circuit current, and send the current detection signal to the mode control module; the mode control module generates a corresponding PWM mode control signal or PSM mode control signal according to the current detection signal and the output voltage sampling signal, and according to the PWM mode control signal or PSM mode control signal , the driving module drives the BUCK-BOOST circuit to work in the BUCK mode in the PWM mode, the BOOST mode or the BUCK-BOOST mode or the BUCK-BOOST mode in the PSM mode. The disclosure achieves the purpose of outputting a stable voltage in the full load range of the DC converter, and reduces the power consumption of the switching tube and the static loss of the circuit during the mode switching process, thereby improving the conversion efficiency.
Owner:BEIJING XIAOMI PINECONE ELECTRONICS CO LTD
Current supply circuit, designing method therefor, and polyphase drive circuit
InactiveCN1894846AReduce lossReduce dynamic lossEfficient power electronics conversionDc-ac conversion without reversalSwitching frequencyFlyback diode
The loss in a current supply circuit including an inverter having a switching element is reduced. The dynamic loss of the IGBT element including a free wheel diode is proportional to the product of a turn-on loss and a switching frequency while the static loss is proportional to the product of a current flowing to the IGBT element and a saturation voltage between the collector and emitter. Even if the resistance of the IGBT element is increased by twice, the saturation voltage between the collector and the emitter is not increased by twice. Accordingly, the voltage and current given to the load are multiplied by 2 and 1 / 2, respectively, so that the powers given to the load are identical. Moreover, it is possible to reduce the static loss even if the dynamic losses are identical.
Owner:DAIKIN IND LTD
Synaptic circuit, synaptic array and data processing method based on synaptic circuit
ActiveCN110619907BReduce static lossAvoid cross interferenceDigital storagePhysical realisationComputer scienceData store
The embodiments of the present application relate to the field of neural networks. The synaptic circuit provided by the present invention includes: a first memory, a second memory, and a switch assembly; the switch assembly includes a first switch tube, a second switch tube, and a third switch tube; the first end of the first switch tube is connected to the second switch tube. The first end of a memory is connected, the control end of the first switch tube is connected to the first bit line interface; the first end of the second switch tube is connected to the first end of the second memory, the control end of the second switch tube is connected to the first bit line interface The two-bit line interface is connected; the second end of the first memory is connected with the first end of the second memory; the first end of the third switch is connected with the second end of the second memory, and the second end of the third switch is connected with the second end of the second memory. The word line interface is connected, and the third end of the third switching transistor is grounded. Based on the embodiment of the present application, the first memory and the second memory connected in series are respectively controlled by the first switch tube and the second switch tube, so that cross-interference between memories can be reduced during data storage.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Zero-interruption hybrid dual power supply automatic conversion device and use method thereof
PendingCN110611366AMake up for the interruption of load power supplyGuaranteed continuityPower network operation systems integrationSingle network parallel feeding arrangementsLoad circuitStandby power
The invention discloses a zero-interruption hybrid dual power supply automatic conversion device and a use method thereof. The device comprises a conversion device body. An excitation conversion switch and a main control controller are arranged in the conversion device body. The main control controller is provided with an ADC sampling module and an IGBT drive output module. The input end of the excitation conversion switch is connected with a main power supply circuit L1 and a backup power supply circuit L2. The input end of the excitation conversion switch is connected with a load circuit through a bus. An inverter grid-connected power supply unit is arranged next to the excitation conversion switch. The input and output ends of the inverter grid-connected power supply unit are connectedwith the main power supply circuit L1 and the load circuit respectively. The control end of the excitation conversion switch is connected with the signal output end of the main control controller. Thedevice provided by the invention overcomes a traditional conversion switch's problem that the load has a short power failure when a circuit is switched, and has the advantages of lower static loss, higher withstand voltage level and insulation level, and better power supply continuity and stability.
Owner:HANGZHOU ZHIJIANG SWITCHGERA
Current supply circuit, designing method therefor, and polyphase drive circuit
InactiveCN100495891CReduce lossReduce dynamic lossEfficient power electronics conversionDc-ac conversion without reversalSwitching frequencyFlyback diode
Owner:DAIKIN IND LTD
Wireless charging system for electronic device
InactiveCN108206592ASimple structureRealize transmissionCircuit arrangementsElectric power transmissionEngineering
The invention discloses a wireless charging system for an electronic device, aiming to solve the problem of finding an implementation scheme of a wireless charging system with a simple structure. Thesystem comprises an energy transmitting end and an energy receiving end, wherein the energy transmitting end comprises a first integral filtering module, an inverter circuit, a conversion circuit anda transmission resonant network which are connected with each other in order; the energy receiving end comprises a receiving resonant network matched with the transmitting resonant network and a second integral filtering module which are connected with each other in order; the energy transmitting end and the energy receiving end are connected with the receiving resonant network by the transmittingresonant network. The invention realizes the electric energy transmission between the energy transmitting end and the energy receiving end by the setting of the first integral filtering module, the inverter circuit, the converting circuit, the transmitting resonant network, the receiving resonant network matched with the transmitting resonant network and the second integral filtering module, andsimplifies the structure of the wireless charging system at the same time.
Owner:SHANGHAI DIANJI UNIV
Insulated gate bipolar transistor
Disclosed is an insulated gate bipolar transistor comprising at least the following layers: a source layer of a first conductivity type; a base layer of a second conductivity type wherein the source layer and the base layer electrically contact the source electrode; a drift layer of the first conductivity type; and a collector layer of the second conductivity type disposed between the drift layer and the collector electrode and electrically contacting the collector electrode. The insulated gate bipolar transistor further comprises at least two trench gate electrodes and at least one trench Schottky electrode, and a collection region of the second conductivity type is arranged at the bottom of these electrodes. The collection regions are in the drift layer and laterally separated from each other by the drift layer. The Schottky layer forms a Schottky contact to the collection region at the contact region.
Owner:HITACHI ENERGY SWITZERLAND AG
A vehicle auxiliary power supply circuit and system
ActiveCN112564473BAvoid damageThe wake-up signal is validProgramme controlComputer controlConstant powerSleep state
Owner:武汉葆源新能科技有限公司
A coaxial bicyclic TSV structure with low thermal stress and high electrical performance and preparation method thereof
ActiveCN114566478BAccurate transmissionPlay the role of shielding signal interferenceSemiconductor/solid-state device detailsSolid-state devicesPhysical chemistryWafer thinning
The invention discloses a coaxial double-ring TSV structure with low thermal stress and high electrical performance and a preparation method. First, the wafer is thinned to a required thickness; then a TSV through hole is formed on the front side of the wafer; and then the inner wall of the TSV through hole is formed The first insulating layer is deposited by thermal oxidation method and deposition method; the diffusion adhesion layer / barrier layer, the seed layer and the outer conductive metal ring are sequentially prepared on the inner wall of the first insulating layer; the diffusion adhesion layer / barrier is deposited on the inner side of the outer conductive metal ring layer, the second insulating layer; prepare the diffusion adhesion layer / barrier layer, the seed layer and the inner conductive metal ring on the inner wall of the second insulating layer; deposit the diffusion adhesion layer / barrier layer in the inner conductive metal ring, and fill the third insulating layer , the coaxial double-ring TSV structure is obtained. The outer conductive metal ring of the present invention is grounded to shield signal interference, and the inner conductive metal ring is used to transmit signals and reduce thermal stress.
Owner:WUHAN UNIV
Pulse width modulation two-output circuit
InactiveCN109347460AReduce forward voltage dropReduced turn-off lossPulse duration/width modulationThree-phaseFilter capacitor
The invention discloses a pulse width modulation two-output circuit and belongs to the field of circuit technology. The pulse width modulation two-output circuit comprises an insulated gate bipolar transistor U1, a UVW three-side power end filtering capacitor circuit (1), a power end filtering circuit (2), a fault signal output circuit (3), a UVW three-phase output current detection circuit (4), aUVW output terminal power supply clamping protection circuit (5), a UVW terminal output protection absorption circuit (6), a singlechip U5 and a peripheral circuit thereof, wherein the UVW three-sidepower end filtering capacitor circuit (1), the power end filtering circuit (2), the fault signal output circuit (3), the UVW three-phase output current detection circuit (4), the UVW output terminalpower supply clamping protection circuit (5), the UVW terminal output protection absorption circuit (6), the singlechip U5 and the peripheral circuit thereof are respectively connected with the insulated gate bipolar transistor U1 by virtue of a corresponding pin. The circuit disclosed by the invention has the advantage that number of applied circuit elements is greatly reduced.
Owner:青岛艾普欧盛电子科技有限公司
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