Radiation control circuit and radiation control method for dc-dc conversion loop

Abstract

The present application relates to the field of circuit, provide a kind of DC-DC conversion loop's radiation control circuit and radiation control method, the method comprises: obtaining the radiation intensity of DC-DC conversion loop detected continuously by annular detection line;According to the radiation intensity of detected loop, adjust the spread spectrum switch amplitude or rising edge time of DC-DC pulse width modulation wave;According to the spread spectrum switch amplitude or rising edge time of DC-DC pulse width modulation wave, control the radiation intensity of DC-DC conversion loop.The present application solves the defect that DC-DC conversion loop radiation control is not accurate in prior art, realizes efficient, real-time radiation intensity detection and control.

Description

Technical Field

[0001] This invention relates to the field of circuit technology, and in particular to a radiation control circuit and radiation control method for a DC-DC conversion loop. Background Technology

[0002] Switching power supplies, as an important power supply method, are widely used in various electronic devices. They utilize modern power electronics technology to maintain a stable output voltage by controlling the on-time and off-time ratio of switching transistors. Switching power supplies are generally composed of pulse-width modulation (PWM) control integrated circuits (ICs) and metal-oxide-semiconductor field-effect transistors (MOSFETs), offering advantages such as small size, lightweight design, and high efficiency, making them an indispensable component of today's electronics and information industry. With the continuous development and innovation of power electronics technology, switching power supply technology is also constantly advancing and is widely used in almost all electronic devices.

[0003] However, despite the many advantages of switching power supplies, excessive radiation during use has become a pressing problem that needs to be solved. Existing technical solutions for addressing the radiation issue of switching power supplies are relatively simplistic, mainly employing two strategies: one is to cover the entire switching power supply with a shielding cover to reduce electromagnetic radiation leakage; the other is to use spread spectrum technology to fluctuate the frequency of the PWM wave within a certain range to disperse radiated energy.

[0004] While these methods alleviate radiation issues to some extent, they have significant limitations. Indiscriminate shielding may increase costs and sacrifice other performance aspects of the switching power supply, while the application of spread spectrum technology may fail to precisely control radiation levels, leading to either over- or under-protection. Summary of the Invention

[0005] This invention provides a radiation control circuit and method for a DC-DC conversion loop, which solves the defects of inaccurate radiation control in existing DC-DC conversion loops and achieves efficient and real-time radiation intensity detection and control.

[0006] This invention provides a radiation control circuit for a DC-DC conversion loop, comprising:

[0007] DC-DC conversion loop, including integrated control components;

[0008] A ring-shaped detection line, connected to the integrated control element, is located directly below the DC-DC conversion loop and is used to detect the radiation intensity of the DC-DC conversion loop;

[0009] The integrated control element is used to receive the radiation intensity detected by the loop detection line and adjust the spread spectrum switching amplitude or rise time of the DC-DC pulse width modulation wave according to the radiation intensity to control the radiation intensity of the DC-DC conversion loop.

[0010] According to the present invention, a radiation control circuit for a DC-DC conversion loop includes an input loop and an output loop. The input loop is composed of an input capacitor and an integrated control element. One end of the input capacitor is connected to a first pin of the integrated control element, and the other end is connected to a ground pin of the integrated control element, thus forming the input loop. The output loop is composed of an output capacitor, an integrated control element, and an inductor. One end of the output capacitor is connected to one end of the inductor, and the other end is connected to a ground pin. The other end of the inductor is connected to a second pin of the integrated control element, thus forming the output loop.

[0011] According to the present invention, a radiation control circuit for a DC-DC conversion loop is provided, wherein the loop detection line is a single loop or a superposition of multiple loops.

[0012] According to the present invention, a radiation control circuit for a DC-DC conversion loop is provided, wherein one end of the loop detection line is connected to the third pin of the integrated control element, and the other end is connected to the fourth pin of the integrated control element.

[0013] According to the present invention, a radiation control circuit for a DC-DC conversion loop is provided, wherein the loop area of ​​the DC-DC conversion loop is less than a preset area threshold, and the distance between the capacitor and the pin on the integrated control element in the DC-DC conversion loop is less than a preset distance threshold.

[0014] A method for radiation control based on the radiation control circuit of any one of the above-described DC-DC conversion loops provided by the present invention includes the following steps:

[0015] Obtain the radiation intensity of the DC-DC conversion loop continuously detected by the loop detection line;

[0016] Adjust the spread spectrum switching amplitude or rise time of the DC-DC pulse width modulation wave based on the detected loop radiation intensity.

[0017] The radiation intensity of the DC-DC conversion loop is controlled based on the spread spectrum switching amplitude or rise time of the DC-DC pulse width modulation wave.

[0018] According to a radiation control method provided by the present invention, adjusting the spread spectrum switching amplitude or rise time of a DC-DC pulse width modulation wave based on the detected loop radiation intensity specifically includes: determining whether the current loop radiation intensity exceeds a preset safety range based on the detected loop radiation intensity; if it exceeds a preset safety threshold, reducing the spread spectrum switching amplitude of the DC-DC pulse width modulation wave or extending the rise time of the DC-DC pulse width modulation wave to reduce the loop radiation intensity; if it does not exceed the preset safety threshold, controlling the spread spectrum switching amplitude or the rise time of the DC-DC pulse width modulation wave to remain unchanged.

[0019] According to a radiation control method provided by the present invention, if the radiation intensity does not exceed a preset safety threshold, the method further includes: determining radiation intensity information based on the radiation intensity detected by the ring detection line, and feeding back the radiation intensity information to the control center.

[0020] According to a radiation control method provided by the present invention, before acquiring the radiation intensity of a DC-DC conversion loop continuously detected by a loop detection line, the method includes: generating an alternating electromagnetic field after the DC-DC conversion loop is energized; generating an induced current and an induced electromotive force on the loop detection line when the alternating electromagnetic field passes through the loop detection line; and sending the induced electromotive force as the detected loop radiation intensity to an integrated control element.

[0021] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method as described above.

[0022] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the radiation control method as described above.

[0023] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the radiation control method as described above.

[0024] This invention provides a radiation control circuit and method for a DC-DC conversion loop. By using a loop detection line to detect the radiation intensity of the DC-DC conversion loop in real time and adjusting the parameters of the DC-DC pulse width modulation wave based on this intensity, precise control of the radiation intensity can be achieved. This helps ensure that the electromagnetic radiation generated by the equipment during operation remains within a safe range, avoiding interference with other electronic equipment. By dynamically adjusting the spread spectrum switching amplitude or rise time of the pulse width modulation wave, the performance of the DC-DC conversion loop can be optimized, reducing unnecessary radiation losses and thus improving the overall efficiency and stability of the system. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the radiation control circuit structure of the DC-DC conversion loop provided by the present invention.

[0027] Figure 2 This is a schematic diagram of the single-ring structure of the ring detection line provided by the present invention.

[0028] Figure 3 This is a schematic diagram of the multi-ring superimposed structure of the annular detection line provided by the present invention.

[0029] Figure 4 This is one of the flowcharts of the radiation control method provided by the present invention.

[0030] Figure 5 This is the second schematic flowchart of the radiation control method provided by the present invention.

[0031] Figure 6 This is a schematic diagram of the structure of the electronic device provided by the present invention.

[0032] Figure label:

[0033] 110: DC-DC conversion loop; 120: Circular detection line; 1102: Input loop; 1104: Output loop. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0035] The terminology involved in this invention will be explained below.

[0036] A DC-DC converter is a direct-to-direct-current converter, typically used to convert one DC voltage level to another.

[0037] PWM, or Pulse Width Modulation, is a technique that controls voltage or current by adjusting the pulse width. In a PWM wave, the signal period is fixed, but the average value of the signal is controlled by changing the pulse width (i.e., the duration of the high level), thereby achieving precise control of power electronic equipment.

[0038] DV / DT is used to describe the rate of change of voltage over time.

[0039] DI / DT is the rate of change of current over time.

[0040] PCB is an abbreviation for Printed Circuit Board, a substrate used to connect electronic components through circuits. A PCB is covered with conductive lines and pads for mounting and connecting electronic components, thereby enabling circuit functionality.

[0041] Spread spectrum refers to a technique used in wireless communication to improve the signal's resistance to interference and its security. Through specific coding methods, a signal that originally had a narrow frequency band is extended to a wider frequency band, thereby increasing the reliability and security of signal transmission.

[0042] The rising edge refers to the instant when a digital signal transitions from a low level to a high level. In digital circuits and logic design, the rising edge is often used as a trigger signal to control the occurrence of certain events or changes in state.

[0043] The following is combined with Figures 1-6 Embodiments of the present invention are described.

[0044] Figure 1 This is a schematic diagram of the radiation control circuit of a DC-DC conversion loop provided by the present invention, as shown below. Figure 1 As shown, it includes:

[0045] DC-DC conversion loop 110, including integrated control element IC;

[0046] The ring detection line 120, connected to the integrated control element IC, is located directly below the DC-DC conversion loop 110 and is used to detect the radiation intensity of the DC-DC conversion loop 110.

[0047] The integrated control element IC is used to receive the radiation intensity detected by the loop detection line 120, and adjust the spread-frequency switching amplitude or rise time of the DC-DC pulse width modulation PWM wave according to the radiation intensity to control the radiation intensity of the DC-DC conversion loop.

[0048] Specifically, Figure 1 The dashed line represents the main radiation loop of the DC-DC converter. It uses PWM waves to control the continuous switching of input circuit 1102 and output circuit 1104, constantly charging and discharging the output circuit 1104 to control the output voltage. However, due to the rapidly changing voltage, both DV / DT and DI / DT are very large, resulting in a significant electromagnetic field radiated through the DC-DC conversion loop. Since the DC-DC conversion loop is parallel to the PCB plane, the generated changing magnetic field is primarily perpendicular to the PCB plane.

[0049] According to Faraday's law of electromagnetic induction, when the magnetic flux through a closed loop changes, a current will appear in the loop. This phenomenon is called electromagnetic induction, the current is called induced current, and the induced electromotive force is called induced electromotive force.

[0050] like Figure 1 The outermost loop is the circular detection line 120 in this invention. Using the circular detection line (senseline), the magnitude of loop radiation can be directly detected, and the amount of loop radiation energy can be directly fed back to the DC-DC integrated control element IC. The integrated control element IC can then reduce the DC-DC conversion loop radiation through pre-set control strategies, such as slowing down the rising edge of the PWM wave or enabling spread spectrum.

[0051] According to the present invention, a radiation control circuit of a DC-DC conversion loop 110 is provided, the DC-DC conversion loop 110 including an input loop 1102 and an output loop 1104; the input loop 1102 consists of an input capacitor C in It consists of an integrated control element (IC); wherein, the input capacitor C in One end is connected to the first pin of the integrated control element IC, and the other end is connected to the ground pin of the integrated control element IC, forming the input circuit 1102; the output circuit 1104 consists of the output capacitor C. out It consists of an integrated control component IC and an inductor L; wherein, the output capacitor C outOne end of the circuit is connected to one end of the inductor L, and the other end is connected to the ground pin; the other end of the inductor L is connected to the second pin of the integrated control element IC, forming the output circuit 1104.

[0052] Specifically, the DC-DC conversion loop includes an input loop 1102 and an output loop 1104; the input capacitor C in and output capacitor C out This is a filter capacitor. In the input circuit 1102, the input capacitor C... in One end is connected to the voltage input pin V of the integrated control component IC. in The other end is connected to the ground pin GND of the integrated control component IC; in the output circuit 1104, the output capacitor C out One end of the circuit is connected to one end of inductor L, and the other end is connected to the ground pin GND; the other end of inductor L is connected to the voltage output pin V of the integrated control component IC. out .

[0053] According to the present invention, a radiation control circuit for a DC-DC conversion loop 110 is provided, wherein the loop detection line 120 is a single loop or a superposition of multiple loops.

[0054] Specifically, the loop detection line 120 can be a single loop or multiple loops stacked together in different layers. The size of the loop detection line 120 is adjusted according to specific application requirements. Its working principle is based on the radiation and reception principles of electromagnetic waves. When an alternating electromagnetic field passes through the loop detection line 120, an induced current and an induced electromotive force are generated. These induced electromotive forces change with the radiation from the DC-DC converter loop. By setting up the loop detection line 120, electromagnetic waves within a specific frequency range can be received. The loop detection line 120 is characterized by its reception mode. Due to the symmetry of the loop structure, the loop detection line can cancel out other interference in the horizontal direction. In the vertical direction, it is typically directional for electromagnetic fields passing vertically through it.

[0055] The 120-ring detection line is designed as follows: Figure 2 When using a single ring as shown, the following advantages are available.

[0056] 1. It helps reduce costs and improve production efficiency.

[0057] 2. Because it has only one ring, it occupies relatively little PCB space, making it suitable for applications with strict space constraints.

[0058] The 120-ring detection line is designed as follows: Figure 3 When multiple rings are superimposed as shown, the following advantages are available.

[0059] 1. By stacking multiple rings together in different layers, the sensing area can be increased, thereby enhancing the ability to receive electromagnetic waves. This helps to capture weaker signals and improve the accuracy and reliability of detection.

[0060] 2. Multiple rings can be arranged on different PCB layers to detect electromagnetic radiation at different depths or in different directions. This multi-layer detection capability helps to provide a more comprehensive understanding of the electromagnetic environment and provides richer data support for the control of DC-DC conversion loop radiation.

[0061] 3. The design of multiple superimposed rings can, to some extent, counteract external interference. Since each ring may be subject to different external interferences, superposition can reduce the impact of a single interference source on the overall detection result. This allows for more accurate detection of electromagnetic waves of specific frequencies or directions.

[0062] According to the present invention, a radiation control circuit of DC-DC conversion loop 110 is provided, wherein one end of the loop detection line 120 is connected to the third pin of the integrated control element IC, and the other end is connected to the fourth pin of the integrated control element IC.

[0063] Specifically, one end of the ring detection line 120 is connected to the I of the integrated control element IC. senseP One pin connects to the I / O pin of the integrated control component IC. senseN Pin.

[0064] According to the present invention, a radiation control circuit for a DC-DC conversion loop 110 is provided, wherein the loop area of ​​the DC-DC conversion loop 110 is less than a preset area threshold, and the distance between the capacitor in the DC-DC conversion loop 110 and the pin on the integrated control element IC is less than a preset distance threshold.

[0065] Specifically, the routing of the DC-DC conversion loop should ensure that the loop area is as small as possible, the filter capacitor is close enough to the pin of the DC-DC integrated control component IC, and the parasitic inductance between the capacitor and the pin is small enough to ensure that the loop radiation has a certain adjustable range, so that even if the spread spectrum is large enough, the loop radiation requirements cannot be met.

[0066] This invention uses a loop detection line 120 to continuously detect the loop radiation of the DC-DC converter. Based on the loop radiation detected by the sense line, the spread spectrum switching amplitude or rise time of the DC-DC PWM wave is controlled, thereby achieving the purpose of controlling the DC-DC conversion loop radiation and preventing the DC-DC conversion loop radiation from being too strong and affecting other functional circuits.

[0067] The radiation control method provided by the present invention is described below. The radiation control method described below can be referred to in correspondence with the radiation control circuit of the DC-DC conversion loop 110 described above.

[0068] like Figure 4 The diagram shown is a schematic flowchart of a radiation control method based on a DC-DC conversion loop according to any one of the above-mentioned embodiments of the present invention, comprising:

[0069] S410: Obtain the radiation intensity of the DC-DC conversion loop 110 continuously detected by the ring detection line 120.

[0070] According to a radiation control method provided by the present invention, before acquiring the radiation intensity of a DC-DC conversion loop 110 continuously detected by a loop detection line 120, the method includes: generating an alternating electromagnetic field after the DC-DC conversion loop 110 is energized; generating an induced current and an induced electromotive force on the loop detection line 120 when the alternating electromagnetic field passes through the loop detection line 120; and sending the induced electromotive force as the detected loop radiation intensity to an integrated control element IC.

[0071] Specifically, when the DC-DC conversion loop starts working, an alternating electromagnetic field is generated around the loop due to the rapid switching action of the input circuit 1102 and the output circuit 1104 controlled by the internal PWM wave. This electromagnetic field is generated by the rapidly changing voltage and current (DV / DT and DI / DT).

[0072] The loop detection line 120 deployed near the DC-DC conversion loop will sense this alternating electromagnetic field and generate induced current and induced electromotive force on it. The magnitude of the induced electromotive force directly reflects the intensity of radiation from the DC-DC conversion loop.

[0073] The loop detection line 120 transmits the induced electromotive force as a detection signal to the integrated control element IC. This signal is continuous and real-time, reflecting the real-time intensity of radiation from the DC-DC conversion loop.

[0074] After receiving the signal transmitted from the loop detection line 120, the integrated control element IC analyzes and processes it to obtain the current radiation intensity of the DC-DC conversion loop. The analysis process can convert the analog signal of the induced electromotive force into a digital signal through analog-to-digital conversion, facilitating subsequent data processing.

[0075] Based on the analyzed loop radiation intensity, the integrated control element IC adjusts the PWM wave of the DC-DC converter according to a preset control strategy. Adjustments may include slowing the rise time of the PWM wave or enabling spread spectrum to reduce the intensity of electromagnetic radiation.

[0076] The adjusted PWM wave is fed back to the DC-DC conversion loop in real time, thereby changing its operating state and controlling the intensity of loop radiation. This process is dynamic and can be continuously fine-tuned based on the real-time situation of loop radiation to achieve the best radiation control effect.

[0077] The above method enables precise control of the radiation from the DC-DC conversion loop, ensuring that the electromagnetic radiation it generates is not too strong, thereby avoiding interference with other functional circuits.

[0078] S420: Adjust the spread spectrum switching amplitude or rise time of the DC-DC pulse width modulation wave based on the detected loop radiation intensity.

[0079] S430: Controls the radiation intensity of DC-DC conversion loop 110 based on the spread spectrum switching amplitude or rise time of the DC-DC pulse width modulation wave.

[0080] According to a radiation control method provided by the present invention, the spread spectrum switching amplitude or rise time of a DC-DC pulse width modulation wave is adjusted based on the detected loop radiation intensity. Specifically, the method includes: determining whether the current loop radiation intensity exceeds a preset safety range based on the detected loop radiation intensity; if it exceeds a preset safety threshold, reducing the spread spectrum switching amplitude of the DC-DC pulse width modulation wave or extending the rise time of the DC-DC pulse width modulation wave to reduce the loop radiation intensity; if it does not exceed the preset safety threshold, keeping the spread spectrum switching amplitude or the rise time of the DC-DC pulse width modulation wave unchanged.

[0081] Specifically, such as Figure 5 The diagram shown is the second part of the radiation intensity control process. It acquires real-time loop radiation intensity data detected by the loop detection line 120 and compares this real-time data with a preset safe radiation intensity range. This preset safe range is set based on a comprehensive consideration of factors such as equipment safety, reliability, and electromagnetic compatibility.

[0082] If the detected loop radiation intensity exceeds a preset safety threshold, it indicates that the electromagnetic radiation generated during the current DC-DC conversion process is too strong and may interfere with other electronic devices or systems. In this case, the loop radiation intensity can be reduced by adjusting the DC-DC PWM waveform parameters. Specifically, one or a combination of the following two strategies can be adopted:

[0083] 1. Reducing the spread-frequency switching amplitude of the PWM wave can decrease the turn-on and turn-off speeds of the switching transistors, thereby reducing the generation of rapidly changing electromagnetic fields.

[0084] 2. Extending the rise time of the PWM wave, i.e. slowing down the rate of change of voltage from low to high, also helps to reduce electromagnetic radiation.

[0085] If the detected loop radiation intensity is within the safety threshold, it indicates that the electromagnetic radiation generated by the current DC-DC conversion process is within acceptable limits. In this case, the DC-DC PWM wave will not be adjusted to maintain system stability and efficiency. That is, the spread-spectrum switching amplitude and rise time of the PWM wave will remain unchanged.

[0086] The entire process is dynamic. The system continuously monitors the loop radiation intensity and adjusts the PWM waveform parameters in real time according to the actual situation.

[0087] By flexibly adjusting the operating parameters of the DC-DC converter according to actual conditions, the DC-DC converter can maintain good electromagnetic compatibility under different operating conditions, while ensuring the stability and efficiency of the system and optimizing its electromagnetic radiation performance.

[0088] According to a radiation control method provided by the present invention, if the radiation intensity does not exceed a preset safety threshold, the radiation intensity information is determined based on the radiation intensity detected by the ring detection line 120, and the radiation intensity information is fed back to the control center.

[0089] Specifically, while the loop detection line 120 continuously and accurately monitors the radiation intensity of the DC-DC conversion loop, the integrated control element IC receives and processes the induced electromotive force signal transmitted by the loop detection line 120, which reflects the current radiation intensity. This induced electromotive force signal is then converted into a specific radiation intensity value or level through specialized circuitry or algorithms, such as signal amplification, filtering, and analog-to-digital conversion.

[0090] The processed radiation intensity information (whether numerical or graded) is transmitted to the control center via data bus or wireless communication. The control center, which can be a microprocessor, microcontroller, or other form of computing unit, is responsible for monitoring and managing the entire system.

[0091] At the control center, the received radiation intensity information is further processed, stored, or used for other purposes, such as system performance analysis and fault early warning. The control center can record the received radiation intensity information in its internal memory for subsequent data analysis. Analysis of this data allows for the evaluation of the DC-DC converter's performance, prediction of its lifespan, and timely detection of potential problems or anomalies. In addition to recording data, the control center can monitor radiation intensity information in real time and its correlation with other system parameters (such as temperature, voltage, and current). If abnormal fluctuations in radiation intensity are detected or it exceeds the expected range, the control center can trigger corresponding early warning mechanisms or protective measures. Based on continuously collected radiation intensity information, the control center can adjust the DC-DC converter's operating parameters to optimize its performance and efficiency. For example, if the radiation intensity remains consistently low, the control center can also adjust the PWM waveform parameters to improve conversion efficiency.

[0092] By feeding back the detected radiation intensity information to the control center in real time, adjustments can be made not only when the radiation intensity exceeds the safety threshold, but also the radiation intensity information can be continuously monitored and recorded during normal operation, providing important data support for system optimization and maintenance.

[0093] Figure 6 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 6 As shown, the electronic device may include a processor 610, a communications interface 620, a memory 630, and a communication bus 640, wherein the processor 610, communications interface 620, and memory 630 communicate with each other via the communication bus 640. The processor 610 can call logic instructions in the memory 630 to execute a radiation control method, which includes: acquiring the radiation intensity of a DC-DC conversion loop continuously detected by a loop detection line; adjusting the spread spectrum switching amplitude or rise time of a DC-DC pulse width modulation wave based on the detected loop radiation intensity; and controlling the radiation intensity of the DC-DC conversion loop based on the spread spectrum switching amplitude or rise time of the DC-DC pulse width modulation wave.

[0094] Furthermore, the logical instructions in the aforementioned memory 630 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0095] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer is able to execute the radiation control method provided by the above methods. The method includes: acquiring the radiation intensity of a DC-DC conversion loop continuously detected by a loop detection line; adjusting the spread spectrum switching amplitude or rise time of a DC-DC pulse width modulation wave according to the detected loop radiation intensity; and controlling the radiation intensity of the DC-DC conversion loop according to the spread spectrum switching amplitude or rise time of the DC-DC pulse width modulation wave.

[0096] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the radiation control method provided by the methods described above. The method includes: acquiring the radiation intensity of a DC-DC conversion loop continuously detected by a loop detection line; adjusting the spread spectrum switching amplitude or rise time of a DC-DC pulse width modulation wave according to the detected loop radiation intensity; and controlling the radiation intensity of the DC-DC conversion loop according to the spread spectrum switching amplitude or rise time of the DC-DC pulse width modulation wave.

[0097] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0098] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of various embodiments or some parts of embodiments.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A radiation control circuit for a DC-DC conversion loop, characterized in that, include: A DC-DC conversion loop includes an integrated control element. The loop area of ​​the DC-DC conversion loop is less than a preset area threshold, and the distance between the capacitors in the DC-DC conversion loop and the pins on the integrated control element is less than a preset distance threshold. The DC-DC conversion loop includes an input circuit and an output circuit. The capacitors include an input capacitor in the input circuit and an output capacitor in the output circuit. A ring-shaped detection line, connected to the integrated control element, is located directly below the DC-DC conversion loop and is used to detect the radiation intensity of the DC-DC conversion loop; The integrated control element is used to receive the radiation intensity detected by the loop detection line and adjust the spread spectrum switching amplitude or rise time of the DC-DC pulse width modulation wave according to the radiation intensity to control the radiation intensity of the DC-DC conversion loop.

2. The radiation control circuit of the DC-DC conversion loop according to claim 1, characterized in that, The input circuit consists of an input capacitor and an integrated control element; wherein one end of the input capacitor is connected to the first pin of the integrated control element, and the other end is connected to the ground pin of the integrated control element, thus forming the input circuit; The output circuit consists of an output capacitor, an integrated control element, and an inductor; one end of the output capacitor is connected to one end of the inductor, and the other end is connected to the ground pin of the integrated control element; the other end of the inductor is connected to the second pin of the integrated control element, thus forming the output circuit.

3. The radiation control circuit of the DC-DC conversion loop according to claim 1, characterized in that, The ring detection line is a single ring or a superposition of multiple rings.

4. The radiation control circuit of the DC-DC conversion loop according to claim 1, characterized in that, One end of the ring detection line is connected to the third pin of the integrated control element, and the other end is connected to the fourth pin of the integrated control element.

5. A method for radiation control based on a radiation control circuit using a DC-DC conversion loop as described in any one of claims 1-4, characterized in that, include: Obtain the radiation intensity of the DC-DC conversion loop continuously detected by the loop detection line; Adjust the spread spectrum switching amplitude or rise time of the DC-DC pulse width modulation wave based on the detected loop radiation intensity. The radiation intensity of the DC-DC conversion loop is controlled based on the spread spectrum switching amplitude or rise time of the DC-DC pulse width modulation wave.

6. The radiation control method according to claim 5, characterized in that, The step of adjusting the spread spectrum switching amplitude or rise time of the DC-DC pulse width modulation wave based on the detected loop radiation intensity specifically includes: Determine whether the current loop radiation intensity exceeds the preset safety threshold based on the detected loop radiation intensity; If the preset safety threshold is exceeded, the spread spectrum switching amplitude of the DC-DC pulse width modulation wave is reduced or the rise time of the DC-DC pulse width modulation wave is extended to reduce the loop radiation intensity. If the preset safety threshold is not exceeded, the spread spectrum switching amplitude of the DC-DC pulse width modulation wave or the rise time of the DC-DC pulse width modulation wave remains unchanged.

7. The radiation control method according to claim 6, characterized in that, If the preset safety threshold is not exceeded, the method further includes: The radiation intensity information is determined based on the radiation intensity detected by the ring detection line, and the radiation intensity information is fed back to the control center.

8. The radiation control method according to claim 5, characterized in that, Before obtaining the radiation intensity of the DC-DC conversion loop continuously detected by the loop detection line, the following is included: When the DC-DC conversion loop is energized, it generates an alternating electromagnetic field; When an alternating electromagnetic field passes through the ring detection line, an induced current and an induced electromotive force are generated on the ring detection line. The induced electromotive force is sent to the integrated control element as the detected loop radiation intensity.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the radiation control method as described in any one of claims 5 to 8.

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