52results about "Power consumption reduction" patented technology

The invention provides a chip pin multiplexing control circuit and a control method thereof, and a chip, the circuit comprises a multiplexing terminal, a chip power supply terminal, a power-on reset controller, a pin signal detector, a voltage detector and a debugging controller, the multiplexing terminal is used for receiving a general function signal and a debugging function signal; the power-on reset controller is used for sending a first enabling control signal to the pin signal detector during power-on; the pin signal detector is used for obtaining an input signal of the multiplexing terminal when enabling is confirmed according to the first enabling control signal, and sending the first control signal to the debugging controller; the voltage detector is used for detecting a voltage signal of a chip power supply terminal and sending a second control signal to the debugging controller; the debugging controller is used for confirming whether to enter a debugging mode according to the first control signal and the second control signal. By applying the chip pin multiplexing control circuit provided by the invention, the waste of chip pin resources can be reduced, and accurate identification of the debugging request signal is ensured.

Disclosed are a clock divider and a control method thereof, which enable retention work to be smoothly performed by ensuring that an output clock of the clock divider is in a low-level state in a retention signal conversion section. A clock divider according to an embodiment of the present invention comprises: a counter that counts clocks of an input clock and generates a counter output for dividing the input clock; an output clock generator that generates a generated clock edge according to the counter output, thereby generating an output clock divided from an input clock; and the state machine controls the counter according to a clock low level request of the power management unit, so that the output clock is in a low level state in a retention signal conversion interval.

The invention relates to the technical field of transistor driving, in particular to an adaptive variable resistance transistor driving system, which comprises a data acquisition module; the driving analysis module is used for determining whether grid resistance driving needs to be carried out on the current opening process according to the abnormal reference value, and carrying out staged driving or overall driving on the grid resistance according to the Miller plateau time and the change rate fluctuation value when the grid resistance driving is carried out on the current opening process; the stage division module is used for determining whether to perform secondary division on each stage according to the stage comparison value corresponding to each stage; the stage driving module is used for determining grid resistance adjustment aiming at the characteristic pre-adjustment sections or all the pre-adjustment sections according to the number of the pre-adjustment sections and adjusting the grid resistance according to the abnormal degree of section change; and the integral driving module is used for adjusting the grid resistance according to the turn-on stage characterization value. According to the invention, the conduction loss of the transistor can be reduced.

The invention provides an H-bridge power tube driving circuit and a control method. According to the invention, the high-side driving voltage and the low-side driving voltage are additionally arranged, and a plurality of current sources are adopted as current input, so that the technical effects that the power tube quickly enters a linear region to reduce the on-resistance, the starting speed is improved and the loss is correspondingly reduced are achieved by increasing the current input of the input end of the power tube; each current source is provided with an independent switch, so that the current input of the input end of a power tube can be reduced by disconnecting the switches corresponding to part of the current sources after the gate-source voltage stably reaches a set value, and the technical effects of effectively preventing overshoot and reducing noise are achieved; and the corresponding fourth switch and the seventh switch are directly switched off, so that the whole driving circuit can be quickly switched off, the switching-off speed is greatly improved, and the technical effect of reducing circuit loss is achieved. The technical problems that loss is increased and efficiency is reduced due to the fact that the opening and closing speed is low in the prior art are solved.

The application discloses a noise reduction circuit, a power supply circuit, a readout circuit and a detection circuit, and relates to the field of MEMS interface circuits, which is used to reduce the low-frequency noise of a MEMS sensor interface circuit. The power supply circuit comprises a charge pump circuit and a noise reduction circuit, and the noise reduction circuit comprises a reference noise suppression circuit and a charge pump noise suppression circuit. The input end of the reference noise suppression circuit is used for connecting a clock signal, a power supply, a reference voltage and a feedback voltage, the output end is connected to the ground through a capacitor C1, and the output end outputs a second voltage. The power supply voltage of the charge pump noise suppression circuit is used for connecting a first voltage to be reduced, the input end is connected to the second voltage, and the output end respectively outputs a third voltage and the feedback voltage. The application reduces the low-frequency noise transmitted by the high-voltage feedback driving circuit and the charge pump circuit in the MEMS sensor interface circuit, and improves the measurement accuracy of the MEMS sensor.

The invention relates to a capacitive element driver and a method for driving a capacitive element. A circuit for driving an output of a capacitive element between two voltage levels has at least one driver unit having a first pair of switches connected in series between a first voltage source terminal and the capacitive element and a second pair of switches connected in series between a second voltage source terminal and the capacitive element. One or more non-dissipative elements may be connected between a first common node of the first switch pair and a second common node of the second switch pair. A combination of driver cell switches is sequentially activated and deactivated to provide a stepwise transfer of energy to the capacitive element, subtracted from, bypassed to the input voltage, and added to the input voltage. The switching stages that achieve the high voltage output may be the same as the switching stages that achieve the low voltage output, but are organized in an opposite order.

The application discloses a signal detection circuit and method based on a memristor, a receiver and equipment, and relates to the field of wireless communication. A voltage source module of the circuit is connected with a voltage input end of a memristor array module, a current source module is connected with a current input end of the memristor array module, a current output end of the memristor array module is connected with an inverting input end of an operational amplifier module and one end of a feedback resistance module respectively, the other end of the feedback resistance module and an output end of the operational amplifier module are connected with an input end of a multiplier module, and an output end of the multiplier module is connected with one end of a resistance module. The voltage of the voltage source module is set according to a set of transmission vectors, the current of the current source module is set according to a received radio frequency signal, and the conductance value of the memristor is set according to a channel matrix. The application can realize a lower bit error rate of signal detection on the basis of greatly reducing the calculation time and power consumption, and also reduces the requirement for the programmable bit precision of the memristor.

The application discloses a digital processing circuit, comprising a logic unit, at least one combinational logic device, the combinational logic device comprising at least one input terminal; a filter unit is used to divide the waveform of the received initial input signal into at least two segments of waveforms within a cycle of the clock signal of the combinational logic device, and to prevent the back propagation of glitches contained in at least one segment of waveforms, so as to provide a filtered input signal to the input terminal of the combinational logic device. By preventing the back propagation of the glitches contained in at least one segment of waveforms in the initial input signal through the filter unit, the application can eliminate the influence of the glitches in the signal on the power consumption of the entire circuit in time, so as to effectively reduce the additional power consumption caused by the glitches.

The invention discloses a high-power radio frequency switch circuit and a control method thereof, and belongs to the technical field of radio frequency switch circuits, the high-power radio frequency switch circuit comprises a blocking capacitor C2, a matching inductor L12, a diode D1, a capacitor C9, a blocking capacitor C4, a matching inductor L6, a diode D2, a capacitor C12, a blocking capacitor C7 and a matching inductor L7, one end of the blocking capacitor C2 is connected with an input end channel Term1, the other end of the blocking capacitor C2 is connected with one end of the matching inductor L12, and the other end of the matching inductor L12 is connected with the other end of the matching inductor L12. And the other end of the matching inductor L12 is connected to two paths of the switch, namely a first path and a second path, a grounded diode D3 and a grounded diode D4 are respectively connected between the capacitor C9 and the blocking capacitor C4 in the first path and the second path and between the capacitor C12 and the blocking capacitor C7 in the first path and the second path, and the diode D3 and the diode D4 are both connected with a feed circuit. After the two output channels are connected with the grounding diode D3 and the grounding diode D4, the isolation between the channels can be improved, the working frequency range is wider, and the high-frequency insertion loss is smaller.

A battery management device according to an embodiment disclosed in the present document comprises: an intermediate signal generation unit for generating intermediate signals related to controlling the operation of contactors respectively corresponding to a first battery pack and a second battery pack connected in parallel to the first battery pack; and a final signal generation unit for generating a final signal for controlling an electrical connection of a positive contactor corresponding to the second battery pack, the final signal being generated on the basis of the intermediate signal and a comparison result between a link voltage, which is a voltage applied by the first battery pack to nodes to which the first battery pack and the second battery pack are connected, and a pack voltage applied to the contactor corresponding to the second battery pack.

The invention discloses a driving circuit and a signal transmitting chip, and relates to the technical field of communication chips, the driving circuit comprises an amplitude amplification circuit and an impedance matching circuit, the amplitude amplification circuit is used for carrying out amplitude amplification on an external differential input signal and then outputting the signal to the impedance matching circuit, and the impedance matching circuit is used for carrying out impedance matching on the signal; and the impedance matching circuit is connected with the amplitude amplification circuit and is used for performing impedance matching on the differential output signal of the amplitude amplification circuit and then outputting the signal to a post-stage circuit. The driving circuit in the embodiment of the invention is realized through two stages of circuits, namely the amplitude amplification circuit and the impedance matching circuit, and each stage of circuit can realize corresponding functions and reasonably configure power consumption at the same time, so that the power consumption of the whole driving circuit can be smaller than that of a traditional current mode logic driving circuit when the amplitude of an output signal is relatively large; and the power consumption of the signal transmitting chip is reduced.

This invention discloses a digital isolator circuit with additional delay, including a transmitter circuit that receives a data input signal and generates first and second transmitter output signals, wherein the second transmitter output signal is a delayed version of the first transmitter output signal. Subsequently, an isolation barrier generates the first and second isolation output signals, causing a receiver circuit to generate a data output signal in response to these isolation output signals. By further incorporating a delay circuit in the transmitter circuit to delay the first transmitter output signal and generate the second transmitter output signal, this invention effectively enhances the received signal at the receiver circuit, maintaining the stability of the common-mode signal and the robustness of data transmission. A pulse carrier modulation mechanism is also employed to effectively reduce power consumption, electromagnetic interference, and signal jitter.

A communication device includes a first device and a second device. The first device includes a transmitting circuit configured to output and transmit a differential signal including a first signal and a second signal to the second device using an input signal and an enable signal. The second device includes a first amplifier configured to receive the differential signal from the first device, a gate circuit configured to gate an output signal of the first amplifier based on a deactivated reset signal, and a count circuit configured to: (1) count a section in which a value of the differential signal is constant based on a clock signal and an output signal of the gate circuit and (2) generate an activated reset signal when the count of the section exceeds a threshold value.

The invention relates to an industrial standard digital quantity input device. The device comprises an input circuit, a protection and clamping circuit, a current limiting circuit, a power supply circuit, a hysteresis comparator circuit and a micro-control unit, wherein the input circuit is used for transmitting a digital quantity input (DI) signal to the protection and clamping circuit; the protection and clamping circuit is used for clamping the voltage of the input DI signal within a preset safety range; the current limiting circuit is used for limiting the current of the DI signal passing through the protection and clamping circuit below a preset threshold value; the hysteresis comparator circuit is used for comparing the voltage of the DI signal passing through the current limiting circuit with a reference voltage; the micro-control unit is used for receiving the voltage signal transmitted by the hysteresis comparator circuit and sending the voltage signal to the upper-layer controller; the power supply circuit is used for providing preset voltage for the current limiting circuit, the hysteresis comparator circuit and the micro-control unit. The device has a DI input current control function and a DI signal clamping function, and the stability and the anti-interference performance of the circuit can be improved.

The invention relates to the technical field of latches, and discloses a high-performance low-overhead four-point reinforced latch based on dual modular redundancy, which comprises an input module, a storage module L1 and a storage module L2, the storage module L1 and the storage module L2 are connected with the input module, and the storage module L1 and the storage module L2 are connected with an output module; and the input module comprises a transmission gate TG1-a transmission gate TG10 which are connected with the storage module L1 and the storage module L2. According to the method, internal four-node overturning can be completely tolerated, and meanwhile, the method has a relatively high four-node overturning self-recovery rate and relatively high reinforcing performance and reliability; a double-input C unit stacking structure is adopted, the leakage power consumption is greatly reduced, and the clock control double-input C unit is utilized, so that the dynamic power consumption is reduced; only one transmission gate is arranged from the input end to the output end in a transparent mode, so that the latch has low time delay and can be widely applied to the fields of aerospace and the like with high requirements on reliability and low power consumption of the latch.

The invention discloses a phase interpolator circuit, and belongs to the field of phase interpolator circuits. The phase interpolator circuit comprises a current source module, a control word decoding module, a phase interpolation module and a buffer output module, the current source module provides different currents for different units of the phase interpolation module, the control word decoding module converts an input control word into a corresponding control signal, the phase interpolation module allocates weight to an input four-phase clock according to the input control word to carry out phase interpolation and output, and the buffer output module recovers a voltage signal to a full swing. The digital resource overhead and the circuit area are remarkably reduced, and high linearity can be achieved through the designed control word decoding scheme and the current source proportion. The method is applied to a multi-channel high-speed sampling application scene with harsh area and resource overhead requirements.

According to the trimming circuit and the trimming method thereof, the electrical device and the vehicle, through the technical scheme, the fusing state of an internal trimming fuse is controlled according to the trimming input signal based on the trimming module, the trimming control signal is generated according to the fusing state, and the trimming output signal is generated according to the trimming control signal through the output module; according to the trimming circuit, the trimming module is electrically connected to the first enabling line, so that the trimming module is turned on or turned off according to the first enabling signal output by the first enabling line, the trimming module is controlled to be turned off through the first enabling signal when the trimming function is not needed, and the power consumption of the trimming circuit is reduced.

A communication device includes a first device and a second device. The first device includes a transmitting circuit configured to output and transmit a differential signal including a first signal and a second signal to the second device using an input signal and an enable signal. The second device includes a first amplifier configured to receive the differential signal from the first device, a gate circuit configured to gate an output signal of the first amplifier based on a deactivated reset signal, and a count circuit configured to: (1) count a section in which a value of the differential signal is constant based on a clock signal and an output signal of the gate circuit and (2) generate an activated reset signal when the count of the section exceeds a threshold value.

The invention relates to a circuit arrangement for operating a load, comprising a first clocked converter operating as a power factor correction circuit and a second clocked converter for converting the intermediate circuit voltage into a suitable operating current for the load. The circuit arrangement is either permanently connected to the AC voltage network or the AC voltage network is not completely switched off when the circuit arrangement is switched off. The circuit arrangement now has measures for reducing glow currents in that each possible current path between the input and the output of the circuit arrangement is either provided with an isolator switch or an isolated part of the circuit arrangement is utilised in order to avoid these glow currents. A Y capacitor is also connected to the isolated part of the circuit arrangement, so that the Y capacitor avoids the glow currents via a capacitance of the LED module by diverting these glow currents to the protective earth (PE).

The present invention relates to the field of integrated circuit technology, and discloses an FPGA lookup table circuit and implementation method. The lookup table circuit includes: a first decoder for acquiring a first address input signal of a lookup table, decoding the first address input signal to obtain first decoded data; a first selector for acquiring multi-bit RAM data, selecting and processing the RAM multi-bit data using the first decoded data to obtain output multi-bit data; a second decoder for acquiring a second address input signal of the lookup table, decoding the second address input signal to obtain second decoded data; and a second selector for selecting and processing the output multi-bit data using the second decoded data to obtain single-bit output data of the lookup table. The present invention consumes fewer components, saves logic resources and area occupied by LUTs in FPGAs, and has the effect of enhancing versatility.

The embodiment of the invention relates to a preset control loop for a PPG LED driver. According to an embodiment, a driver circuit for a light emitter in a photoplethysmography (PPG) system includes a main control loop having an operational amplifier and a transistor configured as a source follower. During the preset control stage, the preset circuit sets the output voltage of the operational amplifier to be a preset level. The switching circuit activates the preset circuit in a preset phase and activates the main control loop in a main control phase. Before the main control loop is activated, the preset circuit pre-regulates the gate voltage of the source follower transistor to be close to its threshold voltage. This improves startup performance by reducing delay and uncontrolled initial current while avoiding the need for amplifier trimming. The circuit can realize fast stabilization time and accurate control of short current pulse at a very low duty ratio, and is beneficial to PPG measurement accuracy and power efficiency in wearable health care monitoring equipment.

The invention provides a selectable boost circuit applied to an intelligent low-side switch chip, the intelligent low-side switch chip comprises a pin IN, a power tube and a voltage change rate control module respectively connected with the pin IN and the power tube, and the selectable boost circuit comprises a selectable voltage multiplication module which is provided with an input end and an output end, the input end is connected to a pin IN of the intelligent low-side switch chip, and the output end is connected to the voltage change rate control module; and the selectable voltage multiplication module is used for detecting an input voltage value of the pin IN, performing boost control based on the input voltage value to obtain a target voltage, and outputting the target voltage to the power tube so as to enable the internal resistance of the power tube to be smaller than a preset threshold value, thereby remarkably reducing the switching loss and improving the efficiency and reliability of the intelligent low-side switching chip.

This invention provides a microwave power switching circuit, device, and control method. The circuit includes an RF input port, a first matching element, a second matching element, at least one RF output port, and at least one switching module. Each switching module corresponds to one RF output port. Each switching module includes a first switching branch, which includes a first switching transistor, a second switching transistor, and an absorption load. Within the same first switching branch, the first switching transistor and the absorption load are connected in series, and the second switching transistor and the absorption load are connected in parallel. When the microwave power switching circuit is operating, the switching states of the first and second switching transistors within the same switching module are opposite, ensuring that the RF output port and RF input port corresponding to the switching module are either in a conducting state or an isolated state. This invention can reduce the insertion loss of the microwave power switching circuit and improve its isolation.

A digital isolator module having additional delay path is provided, comprising a transmitter circuit receiving a data input signal and generating a first and second transmitter output signal. The second transmitter output signal is a delay signal of the first transmitter output signal. An isolation barrier is then configured, accordingly developing a first and second isolated output signal. And a receiver circuit accordingly generates a data output signal in response to the first and second isolated output signals. By employing a delay circuit in the disclosed transmitter circuit for delaying the first transmitter output signal and generating the second transmitter output signal, receiving signals at the receiver input terminal can be enhanced, robustness of data transmission is greatly improved and common mode voltage instability is suppressed. A pulse carrier modulation technique is further developed in the disclosed digital isolator module for reducing power consumption, electromagnetic interferences and jitter disturbance.

The application relates to the field of transistor driving technology, in particular to a transistor driving system with self-adaptive variable resistance, which comprises a data acquisition module, a driving analysis module used for determining whether gate resistance driving is needed for a current on process according to an abnormal reference value, and when the gate resistance driving is needed for the current on process, driving the gate resistance in stages or as a whole according to Miller platform time and a change rate fluctuation value, a stage division module used for determining whether each stage is divided twice according to corresponding stage comparison values of the stages, a stage driving module used for determining gate resistance adjustment for a characteristic pre-adjustment stage or all pre-adjustment stages according to a pre-adjustment stage number, and adjusting the gate resistance according to paragraph change abnormality, and a whole driving module used for adjusting the gate resistance according to on stage characteristic values. The application can reduce the on loss of the transistor.

Subscalar digital arithmetic computing paradigm is disclosed. The atomic data and atomic operations thereon are broken down into sub-atomic data fragments and sub-atomic partial operations. Such a break-up exposes hitherto unexploited levels of parallelism by way of allowing overlap of operations even if data-dependent. It is found that this improved exploitation of latent parallelism to enhance processing throughputs comes with a favourable impact on the area-power characteristics of corresponding computing structures. The present invention may be implemented through synthesized circuits and may result in an enhanced improvement in their area-throughput figure-of-merit (FOM).

The application relates to the chip technical field, in particular to a low-power-consumption asynchronous handshake circuit and an asynchronous circuit, the asynchronous handshake circuit comprising a first flip-flop, a second flip-flop and a third flip-flop; a clock port of the first flip-flop is used for receiving a single pulse signal generated based on a first clock, a data port of the first flip-flop is connected with vdd, and an output port of the first flip-flop is connected with a data port of the second flip-flop; an output port of the second flip-flop is connected with a data port of the third flip-flop, and a clock port of the second flip-flop and an output port of the third flip-flop are both connected with a second clock; if the first flip-flop is an asynchronous low-level effective reset port, the asynchronous handshake circuit further comprises an inverter, an output port of the third flip-flop is connected with a data port of the inverter, and an output port of the inverter is connected with a reset port of the first flip-flop. The application reduces the power consumption of the asynchronous handshake circuit and improves the timing convergence speed of the asynchronous handshake circuit.

The invention relates to the technical field of chips, in particular to a low-power-consumption asynchronous handshake circuit and an asynchronous circuit, and the asynchronous handshake circuit comprises a first trigger, a second trigger and a third trigger; a clock port of the first trigger is used for receiving a single pulse signal generated based on a first clock, a data port of the first trigger is connected with the vdd, and an output port of the first trigger is connected with a data port of the second trigger; an output port of the second trigger is connected with a data port of the third trigger, and a clock port of the second trigger and an output port of the third trigger are both connected with a second clock; if the first trigger is an asynchronous low-level effective reset port, the asynchronous handshake circuit further comprises a phase inverter, an output port of the third trigger is connected with a data port of the phase inverter, and an output port of the phase inverter is connected with a reset port of the first trigger. According to the invention, the power consumption of the asynchronous handshake circuit is reduced, and the time sequence convergence speed of the asynchronous handshake circuit is improved.

An apparatus and method of generating an output transmit signal, comprising generating a first portion of an output transmit signal (TXo) based on an input transmit signal (TXi), where the first portion (TXo1) of the output transmit signal comprises a first set of pulses each spanning a unit interval (UI); generating a second portion (TXo2) of the output transmit signal based on the input transmit signal, wherein the second portion of the output signal comprises a second set of pulses each spanning an intermediate sub-interval of the UI; and combining the first portion with the second portion to generate an output transmit signal.

A leakage compensation circuit (1101), a crystal oscillator circuit, and a microprocessor chip (1100). The leakage compensation circuit (1101) comprises: an IO module (100); a leakage compensation module (200), which comprises a source follower transistor (210) and a leakage current mirror transistor (220), wherein the source follower transistor (210) is electrically connected to an output end of the IO module (100) and is used for receiving and outputting a leakage current of the IO module (100), and the leakage current mirror transistor (220) is electrically connected to an output end of the source follower transistor (210) and is used for outputting a leakage compensation current on the basis of the leakage current of the IO module (100); and a crystal oscillator driving module (300), which is electrically connected to the output end of the IO module (100) and an output end of the leakage compensation module (200), and is used for receiving the leakage current and the leakage compensation current, and outputting a leakage compensation result on the basis of the leakage current and the leakage compensation current. The leakage compensation circuit can perform leakage compensation on an IO circuit, thereby ensuring the normal operation of the IO circuit.