822 results about "Coupling inductor" patented technology

Some examples relate to a circuit including a plurality of input pins, a plurality of output pins, a pulse width modulated (PWM) controller, and an inductor-open detection circuit. The PWM controller has a plurality of inputs and a plurality of outputs. The plurality of inputs of the PWM controller are coupled to the plurality of input pins, and the plurality of outputs of the PWM controller are coupled to the plurality of output pins. The inductor-open detection circuit has an input coupled to a pin of the plurality of input pins, and has an output coupled to the PWM controller.

The invention relates to the technical field of cable measurement, and discloses a cable length measurement method based on coupling inductance and TDC, and the method comprises the following steps: test pulse reset, channel sequential gating, threshold dynamic adjustment, TDC state configuration, channel stable waiting, test pulse generation, time difference precise capture, validity intelligent judgment and data sorting optimization. According to the cable length measurement method based on the coupling inductor and the TDC, the coupling inductor is adopted to replace an FPGA to generate narrow pulses, the TDC is adopted to replace a high-speed ADC, and the hardware cost is reduced by 60%-80%; by optimizing the pulse generation and echo detection circuit, the measurement blind area is reduced to 0.5 m, the short-distance cable measurement requirement is met, and the device has the advantage of being small in measurement blind area.

The invention relates to the technical field of direct-current circuit breaker manufacturing, in particular to a direct-current circuit breaker with a rapid current suppression capability and a working method of the direct-current circuit breaker. The main branch is a line from the L side to the R side and sequentially passes through a secondary side winding N2 of the coupling inductor and a pair of anti-parallel thyristors. Each of the four charging branches comprises a diode and is matched with a resistor of the charging resistor branch to provide a charging loop for two capacitors in the two capacitor branches, and two buffer branches are respectively connected in parallel with the two capacitor branches. After a thyristor of the trigger branch is triggered, a capacitor of the capacitor branch can transmit energy to N2 in the main branch through a primary side winding N1 of a coupling inductor in the energy transfer branch, and then bidirectional current is cut off. The direct-current circuit breaker is designed by using the coupling inductor and the thyristor, and the direct-current circuit breaker has the advantages of high efficiency, rapid current suppression, good controllability, reprotection after reclosing, low cost and high reliability in the current breaking process.

The invention relates to the technical field of artificial intelligence, and discloses a charging pile operation state management method and system based on artificial intelligence, and the method comprises the steps: constructing a dual-input single-output DC-DC conversion control circuit structure based on an input power supply, a main power switching device, a three-winding coupling inductor and a switched capacitor unit; calculating a switch time sequence control signal based on a double-input single-output DC-DC conversion control circuit structure; detecting the running state of the charging pile to obtain a multi-dimensional quantized data set, and performing data coding to obtain a standard data information sequence; performing multi-dimensional feature value extraction and fault position identification on the standard data information sequence to obtain a fault positioning result; according to the fault positioning result and the switch time sequence control signal, closed-loop regulation control is carried out on the power device conduction time sequence and the clamping circuit parameters, stable direct-current output voltage is obtained, the voltage conversion efficiency is improved, the accuracy of fault recognition is improved, and the misjudgment rate is reduced.

The invention discloses an ultra-wideband double-compensation type phase shifter, which comprises two one-to-two switches, and a reference state branch and a phase shift state branch which are connected between the two one-to-two switches, the reference state branch comprises a magnetic coupling inductor L1, a capacitor C2, a capacitor C3 and two compensation capacitors C1, the capacitor C2 is connected from the center of the magnetic coupling inductor L1 to the ground, and the capacitor C3 is connected from the center of the magnetic coupling inductor L1 to the ground. The capacitor C3 is connected with the magnetic coupling inductor L1 in parallel to form a magnetic coupling all-pass network, the two compensation capacitors C1 are symmetrically connected to the two sides of the magnetic coupling all-pass network in series, the phase shift state branch comprises an inductance type all-pass network and two compensation inductors L4, the inductance type all-pass network comprises an inductor L2, an inductor L3 and two capacitors C4, the inductor L3 is connected to the two capacitors C4 in series in parallel, and the compensation inductors L4 are connected to the two capacitors C4 in parallel. The inductor L2 is connected to the ground at the center of the two capacitors C4 connected in series, the two compensation inductors L4 are symmetrically connected to the two sides of the inductance type all-pass network in series, the compensation capacitors C1 and the compensation inductors L4 can compensate the phase, the phase frequency response change rate is slowed down, and phase shifting under the extremely wide bandwidth is achieved.

The invention discloses a self-synchronizing tuning very low frequency communication system and a switch switching method. The system comprises an exciter, a transmitter, a transformer, a self-synchronizing tuning network, a fixed tuning network and a VLF antenna which are connected in sequence. Wherein the fixed tuning network comprises at least one group of coarse tuning coils and fine tuning coils; the self-synchronizing tuning network comprises a current sensor, a voltage sensor, a coupling inductance module, a phase detection unit, a tuning control unit and a synchronous control switch module which are arranged on a main loop; the synchronous control switch module comprises at least one group of synchronous switch devices and corresponding switch drives; the current sensor and the voltage sensor are used for detecting an electric signal of the VLF antenna in real time and transmitting the electric signal to the phase detection unit, an obtained phase detection result is input into the tuning control unit, then the tuning control unit outputs a control pulse synchronous with the signal and transmits the control pulse to the switch drive, and the action of the corresponding synchronous switch device is controlled through the switch drive.

The invention provides a tunable circuit resonator based on a nonlinear high-order topological insulator. The tunable circuit resonator comprises a coupling inductor L1, a coupling inductor L2, a coupling capacitor C1, a coupling capacitor C2, a first subunit and a second subunit, the plurality of coupling inductors L1, the plurality of coupling inductors L2, the plurality of coupling capacitors C1, the plurality of coupling capacitors C2, the plurality of first subunits and the plurality of second subunits are periodically arranged to form a tunable circuit resonator; the capacitance value of the coupling capacitor C1 is smaller than that of the coupling capacitor C2, and the inductance value of the coupling inductor L1 is larger than that of the coupling inductor L2. Structural construction of the tunable circuit resonator is carried out based on the quadrupole moment topological insulator model, adjustability of the circuit resonator is achieved, and the circuit resonator adapts to constantly changing working conditions; the robustness of the tunable circuit resonator is improved by using the robustness of the topological angular state of the model, and the method has certain tolerance to circuit element errors; and the manufacturing cost of the tunable circuit resonator is further reduced.

The invention provides a transformer-free and coupling-inductor-free resonant soft switching circuit based on a reconfigurable secondary / semi-secondary DC-DC converter, according to the characteristics of the reconfiguration circuit, a designed auxiliary soft switching network does not influence the operation of each original circuit, and the original functions of the reconfiguration circuit are ensured; the number of the designed auxiliary soft switching networks is four, and the auxiliary soft switching networks comprise two single-capacitor auxiliary soft switching circuits and two multi-element networks containing auxiliary active switches. The two single-capacitor auxiliary soft switching circuits are used for a pre-stage circuit of the reconfigurable secondary / semi-secondary DC-DC converter; auxiliary soft switching networks are respectively designed around each main switching tube branch circuit of the reconfigurable secondary / semi-secondary DC-DC converter, and the soft switching function of a main switching tube and a post-stage fly-wheel diode is met on the basis that the functions of respective secondary step-down / semi-secondary step-up and step-down circuits are not influenced by each other; based on the design of the resonance type auxiliary soft switching network, three power diodes and two main switching tubes in the reconfigurable conversion main circuit can achieve the functions of conducting and turning off complete soft switching, and meanwhile auxiliary power devices of the auxiliary soft switching network assembly can also achieve the functions of conducting and turning off complete soft switching. The auxiliary soft switching network is suitable for a reconfigurable converter with more power diodes or main switches and high-frequency working conditions, can effectively improve the efficiency of the converter, and has a wide voltage regulation range and a load range.

A power controller comprises a control loop configured to control timing of pulsed signals that activate phases of a coupled inductor voltage regulator based on current demand of a load circuit and comprises a transient detection circuit configured to determine a projected current through a compensation inductor of the coupled inductor voltage regulator based on a state of the phases and operating parameters of the coupled inductor voltage regulator. The transient detection circuit is configured to detect a transient in the current demand of the load circuit based on a variability in phase-to-phase overlap of the pulsed signals. Responsive to detecting the transient, the transient detection circuit is configured to apply a correction to the control loop that alters the timing of the pulsed signals based on the projected current through the compensation inductor.

The invention discloses an ultra-wideband low-noise amplifier based on a double-coupling structure, relates to the field of electronic devices, and is used for solving the problems of large occupied area and large noise coefficient of a distributed amplifier in the prior art. Comprising a broadband input matching network acting on a first-stage circuit, a transconductance enhancement coupling structure and an active bias structure; the parallel RC negative feedback structure and the series-parallel coupling inductance peaking structure act on the second-stage circuit; the transconductance enhancement coupling structure at least comprises a first transistor, a first microstrip line connected with a source electrode of the first transistor and a second microstrip line connected with a drain electrode of the first transistor, and the first microstrip line and the second microstrip line are mutually coupled. Part of drain electrode current signals are coupled to the source electrode to be secondarily amplified, the high-frequency gain of the first-stage circuit is effectively improved, post-stage noise can be restrained, meanwhile, minimum noise matching under high frequency is carried out through the source electrode degeneration inductor and the broadband input matching network, and the noise performance is excellent; and the area can be saved.

The invention provides a topology of a coupling inductor type high-gain buck-boost inverter, which comprises a coupling inductor, and the coupling inductor comprises a first coupling inductor and a second coupling inductor. The dotted terminal of the first coupling inductor is electrically connected with the positive electrode of the power supply, the drain electrode of the third semiconductor switching device and the drain electrode of the fifth semiconductor switching device, and the synonym terminal of the first coupling inductor is electrically connected with the drain electrode of the first semiconductor switching device and the source electrode of the second semiconductor switching device. The high-gain single-stage buck-boost single-phase inverter provided by the invention has buck-boost capability, and stable AC output can be realized when the output voltage of a photovoltaic cell changes in a large range.

The present invention belongs to the technical field of parameter identification for permanent-magnet synchronous motors. Disclosed are a parameter identification method and apparatus for a permanent-magnet synchronous motor, and a storage medium and a device. The method comprises: using a variable step-size feedback neural network algorithm to solve a voltage equation and a d-q axis current discrete state equation, which take cross-coupled inductance into consideration, of a permanent-magnet synchronous motor in a dq coordinate system, so as to obtain intermediate parameters generated in the process of constructing the d-q axis current discrete state equation; and performing calculation on the basis of the intermediate parameters, so as to obtain the stator resistance, the d-axis inductance, the q-axis inductance, the cross-coupled inductance and the permanent-magnet flux linkage of the permanent-magnet synchronous motor, and thereby completing parameter identification. The present invention takes cross-coupled inductance into consideration and uses the variable step-size feedback neural network algorithm, such that the computational load is extremely small, the degree of complexity is reduced, rapid and effective identification can be realized, and errors can be reduced; in different convergence time periods, the algorithm adjusts the step size on the basis of the magnitude of steady-state errors, such that identification results approach stable values more quickly, thereby improving the speed and stability of convergence.

The invention relates to a three-winding coupling inductor bipolar output high-gain DC-DC converter, which is characterized in that a coupling inductor and switched capacitor boosting technology is introduced into a three-level Boost bipolar output converter, and bipolar output voltages Uo1 and Uo2 are controlled by adjusting the turn ratio of the coupling inductor and the duty ratio of a switch; and the input and output power is changed by adjusting the resistance value of the output load. The DC-DC converter is low in input current ripple, high in voltage gain and low in switching tube voltage stress, and bipolar output voltage can be flexibly adjusted through the duty ratio and the coupling inductor turn ratio.

Provided in the present invention is a magnetic element integrated with a coupled inductor and a transformer. The magnetic element comprises an upper magnetic core and a lower magnetic core, which are arranged in a fitted manner, wherein the lower magnetic core comprises a magnetic cover, M coupled inductor magnetic columns, N transformer magnetic columns and Q side columns, M, N and Q all being integers greater than or equal to 1; the coupled inductor magnetic columns are used for the winding of coupled inductor windings; the transformer magnetic columns are used for the winding of transformer primary windings and transformer secondary windings; the M coupled inductor magnetic columns and the N transformer magnetic columns are arranged in parallel on the magnetic cover; and the Q side columns are arranged on the magnetic cover. By means of the present invention, a magnetic element integrated with a coupled inductor and a transformer is used, so that the volume and weight of the magnetic element can be reduced, the efficiency and power density of a converter can be improved, and the costs of the converter can be reduced.

The invention belongs to the technical field of direct-current converters, and provides a direct-current converter with ultrahigh voltage gain and a control method thereof, and the main scheme is that the direct-current converter comprises a direct-current input source, an input inductor, a three-winding coupling inductor, a first switching tube, a second switching tube, a first diode, a second diode, a third diode and a fourth diode, a first clamping capacitor, a second clamping capacitor, a third clamping capacitor, a first output capacitor, a second output capacitor, a third output capacitor, a load and a three-winding coupling inductor are arranged, and a first winding, a second winding and a third winding form three windings and are integrated through a single magnetic core. According to the invention, ultrahigh output voltage gain can be realized, almost zero input current ripple can be realized, the semiconductor device can realize soft switching, the number of the devices is small, the cost is low, and the device is suitable for being applied to power conversion between a photovoltaic new energy power generation unit and a high-voltage direct-current bus.

The present invention discloses a multi-phase converter circuit, which includes at least one two-phase converter circuit coupled between a first voltage and a second voltage, and employs switching control of at least one capacitor and at least one coupled inductor, with alternated charging phase and discharging phase, to achieve power conversion between the first voltage and the second voltage.

In some source degeneration-based cascode LNAs, a cascode transistor may contribute a large portion of noise at mmWave frequencies due to lower output impedance from a bottom transistor (e.g., amplifying transistor or transconductance transistor) of the cascode. The cascode noise may negatively impact performance of the LNA. A first inductor (e.g., cascode inductor) may be coupled to the source of the cascode transistor and a second inductor (e.g., notch inductor) may be coupled to the gate of the bottom transistor such that the cascode inductor and a notch inductor inductively couple to each other, introducing a reverse-transmission zero in-band to reduce or eliminate cascode noise contribution and neutralize gate-drain capacitance of the bottom transistor with minimal area consumption.

A method for reducing magnetic core losses in a multi-phase switching power converter including a coupled inductor. The method includes (a) generating a plurality of periodic voltage waveforms, each periodic voltage waveform being applied across a respective winding of a plurality of windings of the coupled inductor, and (b) distributing flow of changing magnetic flux in a magnetic core of the coupled inductor by controlling phase shift among the plurality of periodic voltage waveforms such that at least two consecutive peak magnitude portions of the plurality of periodic voltage waveforms are not applied to respective windings of the plurality of windings of the coupled inductor that are immediately physically adjacent to each other.

The invention discloses a dual-LLC resonant converter based on a modulatable coupling inductor. The dual-LLC resonant converter aims to meet the wide-gain application requirements of an LLC converter in the high-efficiency and high-gain power supply application fields such as a data center, energy storage conversion, direct-current adaptation and photovoltaic application. According to the invention, two connected transformers are adopted to divide a resonant cavity into two parts to form two LLC units, series connection or parallel connection application of double LLC can be realized through different switch sequences, two common resonant inductors are replaced by coupling inductors, and split capacitors are adopted as input and output filters. For the two working modes, the resonant frequency can be configured at will, and the equivalent inductance value of the coupling inductor can be changed by changing the switching sequence, thereby changing the resonant cavity parameters in different modes, and enabling the resonant cavity parameters to meet the requirements of different requirements of the converter under light load / heavy load for the parameters. Therefore, the full-range efficiency of the converter can be improved on the basis that the working modes are switched according to light and heavy load conditions to achieve wide gain.

Aspects of this disclosure relate to a tunable filter with tunable rejection. The tunable filter includes mutually coupled inductors and a tunable impedance circuit electrically connected to at least one of the mutually coupled inductors. The tunable impedance circuit is configured to adjust at least two notches in a frequency response of the tunable filter by changing a state of a switch. The tunable filter can filter a radio frequency signal. Related methods, radio frequency systems, radio frequency modules, and wireless communication devices are also disclosed.

A converter circuit according to an aspect of the disclosure may comprise: first, second, third and fourth inductors which are connected in parallel to each other; first, second, third and fourth switching elements comprising at least one switch connected to the first, second, third and fourth inductors respectively; and at least one processor, comprising processing circuitry, individually and / or collectively, configured to control the first, second, third and fourth switching elements, wherein the first inductor and the second inductors are coupled to each other, and the third inductor and fourth inductor are coupled each other.

A magnetic inductor core forms a three-dimensional figure eight pattern. An upper member of the core forms an upper half of the figure eight pattern, a lower member of the core forms a lower half of the figure eight pattern, and central portions of the upper and lower members are separated from one another in a depth dimension by a main gap that passes transversely through the core from left to right sides of the figure eight pattern. The upper and lower members are joined at top and bottom sides of the figure eight pattern by core members that extend in the depth dimension between the upper and lower members. Coupled inductor components are be formed using the core such that magnetic flux associated with electrical current flowing in the inductor windings follows the figure eight pattern of the core in opposite directions, producing a flux cancelation effect inside the core.

The invention provides a high-gain DC / DC converter based on a coupling inductor. The high-gain DC / DC converter can convert input low-voltage direct-current voltage into high-voltage direct-current voltage of another grade to be output. The invention discloses a high-gain DC / DC converter based on a coupling inductor. The high-gain DC / DC converter comprises a DC input power supply Vin, a switching tube S, a coupling inductor unit, a clamping capacitor C1, a first energy storage capacitor C2, a second energy storage capacitor C3, a first diode D1, a second diode D2, a third diode D3, an output diode Do and a load unit. High output voltage gain of the converter is realized through the characteristics of parallel charging and series discharging of a different-stage CLC coupling inductor voltage-multiplying unit composed of a coupling inductor unit and energy storage capacitors C2 and C3, and meanwhile, a passive clamping circuit is arranged through a clamping capacitor C1 to absorb energy released by primary side leakage inductance of a coupling inductor at the moment of switching-off of a switching tube. And the voltage stress of the switching tube is reduced. According to the scheme provided by the invention, the different-stage CLC coupling inductor voltage-multiplying unit and the passive clamping circuit clamped to the ground are combined into a whole, the freewheeling diode is additionally arranged in one branch of the different-stage CLC coupling inductor voltage-multiplying unit, the freewheeling loop is arranged for the clamping capacitor, energy released by the primary side leakage inductance of the coupling inductor is recycled, and the energy utilization rate is improved. While the voltage stress of the switching tube is relieved, the output voltage gain of the converter is further improved. The high-gain DC / DC converter based on the coupling inductor has higher output voltage gain, the output voltage can be further improved by changing the turn ratio of the coupling inductor, and the high-gain DC / DC converter based on the coupling inductor has the potential that the high-gain DC / DC converter based on the coupling inductor can meet the requirement for higher output voltage.

The invention provides a self-adaptive noise source impedance adjustable EMI filtering device and method, and belongs to the field of electromagnetic interference processing. The device comprises an EMI filter, a coupling inductor, a balance winding, a balance impedance, a balance impedance adjusting module and a self-adaptive control module; the coupling inductor, the EMI filter and the balance winding form a six-port network, and the self-adaptive control module is used for converting the six-port network into a four-port network according to scattering parameters of the six-port network, constructing a mixed-mode common-mode parameter matrix, obtaining an initial common-mode reflection coefficient according to the mixed-mode common-mode parameter matrix, and outputting the initial common-mode reflection coefficient. And based on the initial common-mode reflection coefficient and a preset target reflection coefficient, obtaining a balance impedance adjustment direction and a balance impedance adjustment amplitude which meet preset requirements so as to control an impedance adjustment module to dynamically adjust the balance impedance. According to the invention, the balance impedance is optimized and adjusted in real time to cope with the dynamic change working condition of the circuit, and the EMI filtering performance reliability is improved.

The invention discloses a transformer type differential series resonant cavity, a differential series resonant oscillator, a chip and equipment, the resonant cavity comprises a two-port transformer and a variable capacitance module, the two-port transformer comprises an inductor LP1, an inductor LP2, an inductor LS1 and an inductor LS2 which are mutually coupled, and the variable capacitance module comprises a variable capacitor CP and a variable capacitor CS; one end of the inductor LP1 is connected with the first port, and the other end is connected with the variable capacitor CP; one end of the inductor LP2 is connected with the second port, and the other end is connected with the variable capacitor CP; one end of the inductor LS1 and one end of the inductor LS2 are connected with the third port and the fourth port respectively, and the other end of the inductor LS1 and the other end of the inductor LS2 are connected with each other; two ends of the variable capacitor CS are respectively connected with the third port and the fourth port; a plurality of pole frequencies of the voltage gain function AV are set to be equal such that AV at the zero phase increases. According to the invention, the problem that a series resonant oscillator cannot realize pure differential output in the current pure CMOS process is solved.

The invention discloses a boost DC-DC converter capable of stably operating in an open loop under a constant power load and a control system of the boost DC-DC converter, and belongs to the technical field of boost converters. The non-dotted terminal of the first coupling inductance coil is connected with the positive electrode of the first diode, the drain electrode of the power switch tube and the positive electrode of the second diode, and one end of the first capacitor is connected with the negative electrode of the first diode and the dotted terminal of the second coupling inductance coil. The negative electrode of the second diode is connected with the non-dotted terminal of the second coupling inductance coil, one end of the second capacitor and one end of the external constant power load, and the negative electrode of the external voltage source is connected with the source electrode of the power switch tube, the other end of the first capacitor, the other end of the second capacitor and the other end of the external constant power load. The converter and the control system thereof can stably operate in an open loop under a constant power load.

The invention provides a bidirectional series hybrid DC circuit breaker and a control method thereof, and relates to the technical field of power equipment. The bidirectional series hybrid DC circuit breaker comprises a main branch, a charging circuit and a voltage injection unit. The main branch comprises a mechanical switch, a current-limiting inductor, a first coupling inductor and a secondary winding; the voltage injection unit comprises a capacitor, a first H-bridge unit, a second H-bridge unit, a first coupling inductor primary winding and a second coupling inductor; and one end of the charging circuit is connected with the main branch, and the other end is connected with the voltage injection unit for charging the capacitor. In addition, the invention also provides a control method of the bidirectional series hybrid DC circuit breaker. According to the bidirectional series connection type hybrid direct current circuit breaker provided by the invention, the capacitor is charged by recovering the residual exciting current in the coupling inductor, and the voltage of the capacitor and the exciting current of the coupling inductor can be recovered to the initial state, so that self-weight starting is realized, and fault current can be bidirectionally broken.

The bidirectional fast circuit breaker comprises a through-flow branch, a commutation module, a current limiting module, a buffer branch and an energy consumption branch, the through-flow branch comprises a fast mechanical switch FMS, a coupling inductor L2, a power electronic switch S1 and a power electronic switch S2, the fast mechanical switch FMS and the coupling inductor L2 are connected in series, and the power electronic switch S1 and the power electronic switch S2 are reversely connected in series. A diode D1 and a diode D2 are respectively connected in parallel with a power electronic switch S1 and a power electronic switch S2, a capacitor C0 is connected in series with the power electronic switch S2, a resistor R0 is connected in parallel with the capacitor C0, a current-limiting inductor L1 is connected in series with a coupling inductor L2, a thyristor T1 and a thyristor T2 are reversely connected in parallel and then are connected in series with a resistor R so as to be connected in parallel with the two ends of the current-limiting inductor L1, and a buffer branch is connected in parallel with the two ends of a through-current branch. The buffer branch comprises a resistor R1 and a capacitor C1 which are connected in series, and the energy consumption branch is connected to the two ends of the through-current branch in parallel.

The invention relates to a high-gain low-ripple DC-DC converter based on a coupling inductor and a control method. A topological structure of the high-gain low-ripple DC-DC converter comprises an interleaved Boost circuit and an H-bridge auxiliary boost circuit, the interleaving Boost circuit comprises a first coupling inductor, a second coupling inductor, a first switching tube branch and a second switching tube branch. One end of the first coupling inductor and one end of the second coupling inductor are connected in parallel and then connected with an input voltage source, and the first switching tube branch and the second switching tube branch are connected in parallel and then serve as the output end of the interleaved Boost circuit; primary sides of the first coupling inductor and the second coupling inductor are used as filter inductors of the interleaved Boost circuit, secondary sides of the first coupling inductor are connected in series in an anti-phase manner and then are connected with the H-bridge auxiliary boost circuit, and an output end of the H-bridge auxiliary boost circuit is connected with an output end of the interleaved Boost circuit in series and superposed and then is connected with a load. The method can be widely applied to the new energy fields of fuel cells, photovoltaics and the like.

A thin coupling inductor, a manufacturing method thereof and a power supply module are provided. The thin coupling inductor comprises a first assembly, a first magnetic core and a second magnetic core; the first assembly comprises a first winding main body, a second winding main body and a third magnetic core combination; and the first magnetic core and the second magnetic core have a thin-layer composite structure. The manufacturing method comprises the steps that a third magnetic core combination and a winding main body are arranged in the frame, and the PP material is pressed to form a stack body. The power supply module comprises a thin coupling inductor, a first switching element, a second switching element, an input capacitor and an output capacitor. The control signals of the first switching element and the second switching element are 180 degrees out of phase.