24results about How to "Improve transient response" patented technology

The invention provides a secondary slope compensation current generation circuit and electronic equipment, a primary slope compensation current generation module generates a corresponding primary slope compensation current according to a received switching signal, so that a first current pulling module pulls a first reference current from a secondary slope compensation current generation module; the first reference current corresponds to the primary slope compensation current; the second current pulling module provides a second reference current for the secondary slope compensation current generation module; and the secondary slope compensation current generation module outputs secondary slope compensation current according to the first reference current and the second reference current, and the secondary slope compensation current and the primary slope compensation current meet a corresponding quadratic term relationship. The slope current with the fixed slope is changed into the quadratic slope compensation current, so that the compensation of the slope current has small influence on the maximum peak current of the inductor under the condition of small duty ratio, and the transient response and the maximum loading capacity of the system are improved.

The invention discloses an LDO (Low Dropout Regulator) circuit with high PSR (Power Supply Response) and enhanced transient response, which comprises an LDO basic circuit, a biasing circuit, a feedforward power supply ripple elimination path, an overshoot suppression path and an undershoot suppression path, wherein the biasing circuit and the LDO basic circuit are connected with the feedforward power supply ripple elimination path, the overshoot suppression path and the undershoot suppression path. All devices in the feedforward power supply ripple elimination path can be set based on the size of a power tube in the LDO basic circuit to offset power supply ripples, and therefore the PSR of the LDO circuit is improved. The feedforward power supply ripple elimination path and the undershoot suppression path are combined to realize circuit multiplexing, so that the static power consumption of the LDO circuit is reduced. The overshoot suppression path and the undershoot suppression path increase the conversion rate of an output node in a feedback mode, so that the transient response of the LDO circuit to large load changes is enhanced, and the overshoot voltage and the undershoot voltage of the output end are reduced.

The invention discloses an OCL-LDO circuit which comprises a band-gap reference unit, a super source follower, a biasing circuit, a power transistor MP, an error amplifier, a flip voltage follower, a frequency compensation unit and a high-pass network. The invention introduces a unique output-capacitance-free low dropout regulator (OCL-LDO), and the core of the regulator is a flip voltage follower (FVF) which is embedded with a super source follower (SSF) and a high-pass network and has push-pull capability. According to the structure, the super source follower (SSF) with a high-pass network is ingeniously fused and is embedded in the flipping voltage follower (FVF), so that the transient response is remarkably improved.

The invention discloses an electronic assembly and a vertical power supply module. The electronic component comprises a mother board, a processor and a vertical power supply module. The mother board includes a first face and a second face. The processor includes a first face processor substrate mounted on the motherboard; the vertical power supply module is electrically connected to the processor to supply power to the processor. The vertical power supply module is attached to the processor substrate through an aperture through the motherboard.

The utility model provides an IGBT driving circuit based on a push-pull structure, and relates to the technical field of power electronic device driving, and the IGBT driving circuit comprises an optocoupler isolation module which is used for receiving a control signal and providing electrical isolation output; the push-pull driving module comprises an NPN type triode Q1 and a PNP type triode Q2 which are complementary and symmetrical; the push-pull driving module is configured as follows: when the optocoupler is conducted, Q1 is saturated and conducted, Q2 is cut off, and a driving current charges an IGBT grid electrode through R2; when the optocoupler is turned off, the Q2 is saturated and turned on, the Q1 is turned off, and the driving current flows through the R3 to discharge the grid electrode of the IGBT. Bidirectional driving current is provided through a push-pull structure, the charge charging and discharging speed of the IGBT grid electrode is increased, the switching loss is reduced, bidirectional driving current is provided through a switch-on resistor R2 and a switch-off resistor R3, the resistance value of the switch-on resistor R2 is selected to be small, the purpose of reducing switch-on loss Eon is achieved, the resistance value of the switch-off resistor R3 is selected to be large, and the purpose of reducing switch-off Vce is achieved.

The invention discloses a low-dropout linear voltage stabilizing circuit, a chip and electronic equipment, and belongs to the field of semiconductor integrated circuits. The circuit comprises a voltage detection module, a first adjusting module and a second adjusting module. The voltage detection module is connected with a target output end of the circuit and is used for outputting a first control voltage according to an output voltage of the target output end; the first adjusting module is connected with the voltage detection module and the target output end and used for providing first current for the target output end according to the first control voltage. The second adjusting module is connected with the voltage detection module and the target output end and used for providing second current for the target output end according to the first control voltage. Wherein the first current and the second current are both used for stabilizing the output voltage. Under the condition that the output voltage changes, the output voltage can be recovered more quickly through the first current and the second current, the transient response of the circuit is improved, and the circuit performance is improved.

The application discloses a BOOST internal ripple compensation circuit based on COT control and relates to the field of power supply design.The BOOST internal ripple compensation circuit comprises a conduction time control module TON, a driving module Driver, a ripple injection circuit and a comparator COMP; when the conduction time control module TON is in a conduction state, the comparator COMP is used for performing ripple compensation on the square wave generated by the ripple injection circuit, so that the BOOST system is guaranteed to be stable.The application does not need an equivalent resistor in series with an output capacitor, the ripple compensation is performed by the internal ripple injection circuit, the ripple of the output voltage is greatly reduced, meanwhile, the problem that the change trend of the ripple of the output capacitor is inconsistent with the change trend of the inductor current ripple is solved by the ripple injection circuit, the transient response is enhanced, compared with the traditional RC filter which needs a large capacitor and a resistor, the application only needs to select a small capacitor and a resistor to realize the ripple compensation, and the area of a chip is reduced.

The utility model relates to a low-dropout linear voltage stabilizing circuit. The low-dropout linear voltage stabilizing circuit comprises a front-stage low-dropout linear voltage stabilizing module and one or more rear-stage low-dropout linear voltage stabilizing modules in cascade connection with the front-stage low-dropout linear voltage stabilizing module. The preceding-stage low-dropout linear voltage stabilization module is configured to generate a stable first output voltage which serves as a power supply voltage to be provided for the backward-stage low-dropout linear voltage stabilization module. The rear-stage low-dropout linear voltage stabilization module is configured to generate stable output voltage under the power supply of the first output voltage; wherein the front-stage low-dropout linear voltage stabilization module adopts a current mode buffer compensation structure so as to improve the frequency stability; the rear-stage low-dropout linear voltage stabilization module is provided with an inverted source follower, and the output of the inverted source follower is connected to the control end of the second power adjustment tube so as to improve the circuit bandwidth. According to the low-dropout linear voltage stabilizing circuit, the frequency stability, the output voltage stability and the circuit bandwidth of the low-dropout linear voltage stabilizing circuit are improved.

The utility model discloses a TLVR inductor wound by double flat wires in parallel, the inductor comprises a T-shaped magnetic core, a primary coil and a secondary coil, the T-shaped magnetic core is a magnet which is integrally formed by mould pressing and is provided with a bottom plate and a stand column, the two coils which are respectively wrapped in an insulating mode are formed into more than one turn of concentric thread-shaped coil through double-wire winding, and the primary coil and the secondary coil are arranged in the T-shaped magnetic core. Two ends of the two coils are respectively bent towards the same side to form a first opening and a second opening which are sleeved inside and outside, the T-shaped magnetic core and the two coils are packaged and molded into a rectangular block body by hot-pressing powder in a combined state, and two groups of pins are molded based on the end parts of the two coils. According to the TLVR inductor, the two stages of coils which are different in thickness and are insulated and separated are spirally wound in parallel and are connected with the T-shaped magnetic core in a sleeved mode to be assembled and then packaged, the insulation isolation and coupling rate between the two stages of coils can be improved, the coupling coefficient K can reach 0.7, the transient response of the type of inductor is improved, and the TLVR inductor has the advantages of being simple in structure and convenient to use. The method is widely applied to hot industries such as AI artificial intelligence, ChatGPT, big data, cloud service and the like.

The invention provides a low dropout linear regulator with low power consumption and fast transient response and a microprocessor. A main loop circuit is configured to receive a reference voltage and a feedback voltage and adjust an output voltage to enable the output voltage to be constant at an expected value; the first loop circuit is configured to be connected with the main loop in parallel, receive the reference voltage and the feedback voltage and are used for adjusting the transient condition that the output load current is changed from small to large; the second loop circuit is configured to be connected in parallel with the main loop and receive the feedback voltage for adjusting the transient condition of the output load current from large to small. When the output is stable, the first loop circuit and the second loop circuit are in a closed state, the first loop circuit enhances the adjustment of the system on the suddenly dropped output voltage, and the second loop circuit enhances the adjustment of the system on the suddenly raised output voltage. The first loop circuit and the second loop circuit work together, opening or closing of the loop is selected according to the condition of the load, and energy consumption is saved.

The invention discloses a voltage build-up rate control circuit and a low dropout regulator, and the circuit comprises a pre-stage signal generator which is used for generating a first output signal; the signal superposition module is used for providing a second output signal according to the first output signal; the sampling capacitor is used for providing pull-up current for the first node according to the establishment rate of the second output signal; the current generator is used for providing pull-down current with a set rate curve for the first node; and the negative feedback regulation module is used for comparing the voltage of the first node with a set reference voltage and providing regulation current for the output end of the signal superposition module according to a comparison result, so that the establishment rate of the second output signal is the same as a rate curve set by the current generator. According to the voltage establishment rate control circuit, the output voltage of various circuit systems can be established according to the determined rate curve, so that the circuit stability can be improved, and the transient response of the circuit can be optimized.

The invention discloses a two-stage power supply architecture and a cooperative control method thereof. The two-stage power supply architecture comprises a first-stage converter, a second-stage converter, a first-stage controller and a second-stage controller, the first-stage converter receives voltage input by an external input bus and outputs intermediate bus voltage to the second-stage converter; the second-stage converter outputs the converted voltage to the second-stage controller and external load equipment; the second-stage controller further receives an externally input reference voltage, controls the working state of the second-stage converter based on the converted voltage and the reference voltage and outputs the current local working state to the first-stage controller, and the first-stage controller further receives an externally input reference working state and controls the working state of the second-stage converter based on the reference working state. And the working state of the first-stage converter is controlled based on the reference working state and the current local working state to ensure that the two-stage power supply architecture works at the optimal efficiency point. The power supply has the characteristics of high efficiency and high transient response.

The invention discloses a direct-current power converter, a control method and a control device thereof, and a mobile power supply, and relates to the technical field of mobile power supplies. The method comprises the following steps: acquiring output power; when the output power is greater than a preset first power threshold, controlling the switching device to work according to a preset first switching frequency; and when the output power is less than or equal to a preset second power threshold, controlling the switching device to work according to a preset second switching frequency. According to the invention, the output power is monitored in real time, and the switching frequency is adaptively switched according to the output power, so that efficiency optimization in a full-load range is realized. During high-power output, a high first switching frequency is adopted, transient response is optimized, and miniaturization of passive elements is facilitated; and when low-power output is carried out, the low second switching frequency is automatically switched, so that the switching loss which is dominant at the moment is reduced, and the transmission efficiency during low-power working is improved.

The utility model discloses a coaxial one-piece earphone horn, which comprises a surface cover, a support, a low-frequency driving unit, a high-frequency driving unit and a PCB (printed circuit board), the surface cover is arranged on the surface of the support, the low-frequency driving unit and the high-frequency driving unit are arranged in the support, and the PCB is arranged on the back of the support. The low-frequency driving unit comprises a low-pitch voice coil, a low-pitch voice diaphragm, a low-pitch washer, a low-pitch magnet and a low-pitch U-shaped cup, the high-frequency driving unit comprises a high-pitch voice diaphragm, a high-pitch voice coil, a high-pitch washer, a high-pitch magnet, a high-pitch U-shaped cup and a high-pitch tuning net, the high-pitch U-shaped cup is connected to the bottom of the surface cover, the high-pitch voice diaphragm is arranged at the center of the support in a wrapping mode, and a second cavity is formed by the high-pitch voice diaphragm and the high-pitch U-shaped cup. The high-pitch voice coil, the high-pitch washer and the high-pitch magnet are installed in the second cavity. The method has the advantages of good transient response, low harmonic distortion, and good flexibility and dynamic mechanical properties.

The invention discloses a low-dropout linear voltage regulator based on damping coefficient control, and belongs to the technical field of linear voltage regulators. The low dropout linear regulator comprises a first-stage amplification circuit, a second-stage amplification circuit, a power-stage circuit and a damping coefficient control circuit. The damping control circuit is added between the second-stage amplifier circuit and the power-stage circuit to adjust a damping factor, so that the linear voltage regulator can obtain good stability and transient characteristics, and in addition, the structure can be used for a structure without an off-chip capacitor and can also be used for a structure with the off-chip capacitor. And the outer capacitor structure is arranged outside the outer capacitor structure.

This invention discloses a common-secondary combined four-phase toroidal TLVR inductor, assembled from prefabricated pairs of primary magnetic cores, secondary magnetic cores, a single secondary coil, and four primary coils. The secondary magnetic core has two T-shaped second slots formed by a central strip-shaped rib and four corner bosses. The secondary coils are located within these T-shaped second slots and are open-looped around the strip-shaped rib. Every two primary coils are joined together within one T-shaped second slot, with a portion of their middle sections parallel and abutting the secondary coils. The primary magnetic core covers both coils and is flush with the edges of the secondary magnetic core, forming a single, integrally solidified unit. A set of secondary electrode pads is formed on the bottom of one side of the package for the secondary coils, and four sets of primary electrode pads are formed on the top of each side of the package and the bottom of its adjacent right side for the primary coils. This inductor helps reduce space requirements and improves the transient response of inductors. The coupling coefficient between any two phases of the TLVR is less than 0.1, further improving the circuit's operating environment.

The application discloses a low dropout linear regulator circuit which is mutually started with a bandgap reference circuit, and comprises a pre-starting circuit, an operational amplifier, a first NMOS transistor, and a bandgap reference circuit; the same-phase input end of the operational amplifier is connected with the output end of the pre-starting circuit; the gate of the first NMOS transistor is connected with the output end of the operational amplifier, and the source thereof is communicated with the input end of the bandgap reference circuit, so that an initial output voltage is generated to pre-start the bandgap reference circuit; the output end of the bandgap reference circuit is communicated with the pre-starting circuit, and after pre-starting, the LDO circuit is restarted to obtain a final output voltage, and the mutual starting of the LDO circuit and the bandgap reference circuit is realized. The application solves the problems that the traditional LDO circuit cannot provide stable bias current by itself, and the load capacity and transient response performance of the traditional bandgap reference type LDO circuit are poor, adopts a special mutual starting mechanism, simplifies the pre-starting and shutdown mechanism, improves the load capacity and transient response performance of the LDO circuit, guarantees the stable output voltage, and ensures the normal work of other modules of the system.

The application provides a multi-loop low-dropout linear voltage regulator with fast transient response and high power supply rejection, which comprises a main feedback loop, an adaptive ripple elimination loop and a current feedback loop; the main feedback loop comprises a differential circuit, a summing circuit and a buffer; the adaptive ripple elimination loop comprises a first current detection circuit and an adaptive auxiliary amplifier, the first current detection circuit detects an output current to adjust the gain of the adaptive auxiliary amplifier; the current feedback loop comprises a second current detection circuit, a current mirror, a transistor MN11 and a capacitor C1; the application adopts a multi-loop design and comprehensively considers the transient response characteristics and the power supply rejection ratio of the linear voltage regulator; compared with a conventional low-dropout linear voltage regulator, the voltage regulator of the application is improved in the transient response and the power supply rejection ratio, has wider applicability and further improves the performance of a power supply module.

This invention discloses a four-phase toroidal TLVR inductor, assembled from prefabricated pairs of primary and secondary magnetic cores and four sets of primary and secondary coils. The secondary magnetic core has four corner-shaped second slots separated by a central cross-shaped rib. The primary and secondary coils overlap in their respective middle sections, and any two coils in each set are sequentially embedded in the second slots with the primary coil on top and the secondary coil on the bottom. The primary magnetic core covers the middle section of the primary coil and is flush with the secondary magnetic core, forming a single, integral solidification. Four sets of circumferentially distributed secondary electrode pads are formed on the bottom of the package, and four sets of primary electrode pads are formed on the top of each side of the package and the bottom of its adjacent right side. This inductor helps maintain a stable package structure and reduces space requirements, while also improving the transient response of the inductor. The coupling coefficient between any two phases of the TLVR is less than 0.1, further improving the circuit's operating environment.

The utility model discloses a power amplifier for a hydrophone performance testing device, and belongs to the technical field of hydrophone testing. Comprising a signal input end for receiving the sinusoidal signal, a power amplification circuit for performing power amplification on the sinusoidal signal, and a signal output end for outputting the sinusoidal signal after power amplification; the power amplification circuit comprises a power amplification chip, the signal input end is connected with an in-phase input pin of the power amplification chip, and an output pin of the power amplification chip is connected with the signal output end; an output pin of the power amplifier chip is sequentially connected with a first resistor, a second resistor and the ground in series, and the first resistor and the second resistor are connected with the reverse input end through a wire. The low-level signal processing circuit has the advantages that the low-level signal processing performance is good, and high signal-to-noise ratio precision is kept when weak input signals are processed; and the working voltage range is wide, and the current limit is adjustable.

The invention discloses a power supply control circuit which is used for controlling a two-stage power supply conversion system. The power supply control circuit introduces a feedback signal representing load change into a control loop of the first-stage power supply conversion circuit, so that the first-stage power supply conversion circuit adjusts output in time according to the load change, and the transient response of the whole two-stage power supply conversion system is accelerated.

The present invention belongs to the field of power electronics technology, and specifically relates to a charge balancing control method and a charge balancing controller for a DCM Flyback converter, comprising: completing charge balancing control within two switching cycles, wherein the following steps are performed in each switching cycle: based on the input and output of the converter in the current switching cycle obtained by sampling, calculating the output charge Q of the converter to the output capacitor when the duty cycle of the current switching cycle is high ch At the same time, the output voltage v of the converter after two switching cycles is estimated based on #imgabs0# ext , where v out and #imgabs1# are respectively the current switching cycle obtained by sampling at Q ch =0 when the output voltage and its changes; based on Q ch 、v ext And the reference voltage v ref , according to Q ref =C(v ref ‑v ext )‑Q ob Calculate the reference charge Q ref , used for calculating the duty cycle of the digital pulse width modulation signal to control the switch of the converter in the next switching cycle. The present invention estimates the output voltage after two switching cycles, which is used to calculate the reference charge of the next switching cycle without hysteresis, and improves the transient response to circuit disturbances.

The invention discloses a solar energy-fuel complementary hot electron-gas turbine power generation device which comprises a compressor, a high-pressure gas storage tank, a solar condenser, an anode, a cathode, a combustion chamber and a turbine. The cathode is attached to the outer wall of the combustion chamber; electrons escaping from the cathode can escape into the anode; the compressor is driven by renewable energy electric power, absorbs air and stores the air in the high-pressure air storage tank; after being condensed by the solar condenser, sunlight can penetrate through the anode to irradiate the cathode; the anode and the cathode are respectively connected with a load for supplying power to the load; the output end of the combustion chamber is connected with the turbine so that combustion products can be used for pushing the turbine to generate electricity. According to the device, redundant renewable energy source electric power is effectively consumed, and when a power grid needs, high-temperature heat and high-energy gas generated in the combustion and solar radiation heating process are utilized, so that mixed utilization of various energy sources is achieved.

The invention discloses an NMOS (N-channel metal oxide semiconductor) type low-dropout linear regulator circuit, which comprises an EA1 error amplifier, an MN1 transistor, an MP1 transistor, an output voltage detection circuit, a BUF1 buffer and a BUF2 buffer, the output end of the EA1 error amplifier is electrically connected with the input end of the BUF1 buffer and the input end of the BUF2 buffer; the output end of the BUF1 buffer is electrically connected with the grid electrode of the MN1 transistor, the output end of the BUF2 buffer is electrically connected with the grid electrode of the MP1 transistor through the S1 switch, and the output end of the BUF2 buffer is electrically connected with the VDD through the S2 switch; the drain electrode of the MP1 transistor and the source electrode of the MN1 transistor are both electrically connected with the negative input end of the EA1 error amplifier, and the output voltage detection circuit controls the drain electrode of the MP1 transistor and the source electrode of the MN1 transistor to alternately serve as the output end of the low dropout linear regulator according to the magnitude of output voltage Vout. When the output voltage Vout is large, the MP1 is adopted as a power tube, and under the condition that a charge pump is not adopted, it is guaranteed that transient response is fast, and it can also be guaranteed that the output voltage range is expanded.