Radiation control circuit and radiation control method of direct current-direct current conversion loop

Abstract

The invention relates to the field of circuits, and provides a radiation control circuit and radiation control method for a DC-DC conversion loop, and the method comprises the steps: obtaining the radiation intensity, continuously detected by an annular detection line, of the DC-DC conversion loop; according to the detected loop radiation intensity, the spread spectrum switching amplitude or rising edge time of the direct current-direct current pulse width modulation wave is adjusted; and controlling the radiation intensity of the direct current-direct current conversion loop according to the spread spectrum switching amplitude or the rising edge time of the direct current-direct current pulse width modulation wave. According to the invention, the defect of inaccurate radiation control of a direct current-direct current conversion loop in the prior art is overcome, and efficient and real-time radiation intensity detection and control are realized.

Description

Technical Field

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

[0002] As an important power supply method, switching power supply is widely used in various electronic devices. It uses modern power electronics technology to maintain a stable output voltage by controlling the on and off time ratio of the switch tube. Switching power supply is generally composed of pulse width modulation (PWM) control integrated chip IC and metal oxide semiconductor field effect transistor (MOSFET). It has the advantages of small size, light weight and high efficiency, and has become an indispensable part of today's electronic information industry. With the continuous development and innovation of power electronics technology, switching power supply technology is also constantly improving and is widely used in almost all electronic devices.

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

[0004] Although these methods have alleviated the radiation problem to a certain extent, they have obvious limitations. Indiscriminate shielding may increase costs and sacrifice other performance of the switching power supply, while the application of spread spectrum technology may not be able to accurately control the radiation level, resulting in over-protection or under-protection. Summary of the invention

[0005] The present invention provides a radiation control circuit and a radiation control method for a DC-DC conversion loop, which are used to solve the defect of inaccurate radiation control of the DC-DC conversion loop in the prior art and realize efficient and real-time radiation intensity detection and control.

[0006] The present invention provides a radiation control circuit for a DC-DC conversion loop, comprising: a DC-DC conversion loop including integrated control components; an annular detection line, connected to the integrated control element, located directly below the DC-DC conversion loop, and 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 annular detection line, and adjust the spread spectrum switch amplitude or rising edge 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.

[0007] According to a radiation control circuit of a DC-DC conversion loop provided by the present invention, the 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; wherein 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, forming an input loop; the output loop is composed of an output capacitor, an integrated control element and an inductor; wherein one end of the output capacitor is connected to one end of the inductor, and the other end is connected to the ground pin; the other end of the inductor is connected to a second pin of the integrated control element, forming an output loop.

[0008] According to a radiation control circuit of a DC-DC conversion loop provided by the present invention, the annular detection line is a single annular line or a superposition of multiple annular lines.

[0009] According to a radiation control circuit of a DC-DC conversion loop provided by the present invention, 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.

[0010] According to a radiation control circuit of a DC-DC conversion loop provided by the present invention, the loop area of ​​the DC-DC conversion loop is smaller than a preset area threshold, and the distance between a capacitor in the DC-DC conversion loop and a pin on an integrated control element is smaller than a preset distance threshold.

[0011] A method for radiation control based on the radiation control circuit of any one of the DC-DC conversion loops provided by the present invention comprises the following steps: Acquiring the radiation intensity of the DC-DC conversion loop continuously detected by the ring detection line; According to the detected loop radiation intensity, adjusting the spread spectrum switching amplitude or rising edge time of the DC-DC pulse width modulation wave; The radiation intensity of the DC-DC conversion loop is controlled according to the spread spectrum switch amplitude or the rising edge time of the DC-DC pulse width modulation wave.

[0012] According to a radiation control method provided by the present invention, the method of adjusting the spread spectrum switching amplitude or rising edge time of a DC-DC pulse width modulation wave according to the detected loop radiation intensity specifically includes: judging whether the current loop radiation intensity exceeds a preset safety range according to the detected loop radiation intensity; if it exceeds the preset safety threshold, reducing the spread spectrum switching amplitude of the DC-DC pulse width modulation wave or extending the rising edge 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 of the DC-DC pulse width modulation wave or the rising edge time of the DC-DC pulse width modulation wave to remain unchanged.

[0013] According to a radiation control method provided by the present invention, if the preset safety threshold is not exceeded, the method further includes: determining radiation intensity information according to the radiation intensity detected by the annular detection line, and feeding back the radiation intensity information to a control center.

[0014] According to a radiation control method provided by the present invention, before obtaining the radiation intensity of a DC-DC conversion loop continuously detected by a ring detection line, the method includes: generating an alternating electromagnetic field when the DC-DC conversion loop is energized; when the alternating electromagnetic field passes through the ring detection line, generating an induced current and an induced electromotive force on the ring detection line; and sending the induced electromotive force as the detected loop radiation intensity to an integrated control element.

[0015] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the above methods when executing the computer program.

[0016] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the radiation control method as described above is implemented.

[0017] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the method for controlling radiation as described above is implemented.

[0018] The present invention provides a radiation control circuit and radiation control method for a DC-DC conversion loop. The radiation intensity of the DC-DC conversion loop is detected in real time through a ring detection line, and the parameters of the DC-DC pulse width modulation wave are adjusted according to the intensity, so that the radiation intensity can be accurately controlled, which helps to ensure that the electromagnetic radiation generated by the device during operation is within a safe range and avoids interference with other electronic devices. By dynamically adjusting the spread spectrum switching amplitude or rising edge time of the pulse width modulation wave, the performance of the DC-DC conversion loop can be optimized, and unnecessary radiation loss can be reduced, thereby improving the overall efficiency and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the radiation control circuit structure of the DC-DC conversion loop provided by the present invention.

[0021] Figure 2 It is a schematic diagram of a single-loop structure of the annular detection line provided by the present invention.

[0022] Figure 3 It is a schematic diagram of the multi-ring superposition structure of the ring detection line provided by the present invention.

[0023] Figure 4 It is one of the flow charts of the radiation control method provided by the present invention.

[0024] Figure 5 This is the second flow chart of the radiation control method provided by the present invention.

[0025] Figure 6 It is a structural schematic diagram of the electronic device provided by the present invention.

[0026] Reference numerals: 110: DC-DC conversion loop; 120: ring detection line; 1102: input loop; 1104: output loop. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The terms involved in the present invention are explained below.

[0029] DCDC, a DC to DC converter, is usually used to convert one DC voltage level to another DC voltage level.

[0030] PWM wave, or pulse width modulation waveform, is a technology that controls voltage or current by adjusting the pulse width. In PWM wave, the cycle of the signal is fixed, but the average value of the signal is controlled by changing the width of the pulse (that is, the duration of the high level), thereby achieving precise control of power electronic equipment.

[0031] DV / DT is used to describe the rate of change of voltage over time.

[0032] DI / DT is the rate of change of current over time.

[0033] PCB, short for Printed Circuit Board, is a substrate used to connect electronic components through circuits. PCB is covered with conductive lines and pads, which are used to install and connect electronic components to realize circuit functions.

[0034] Spread spectrum refers to spread spectrum technology, which is used in wireless communications to improve the signal's anti-interference ability and confidentiality. Through a specific coding method, the original narrow frequency band signal is expanded to a wider frequency band to increase the reliability and security of signal transmission.

[0035] The rising edge refers to the moment when a digital signal jumps 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 the change of state.

[0036] Combine the following Figure 1-Figure 6 Embodiments of the present invention are described.

[0037] Figure 1 is a schematic diagram of a radiation control circuit of a DC-DC conversion loop provided by the present invention, such as Figure 1 As shown, including: A DC-DC conversion loop 110, including an integrated control element IC; The ring detection line 120 is connected to the integrated control element IC and 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; The integrated control element IC is used to receive the radiation intensity detected by the ring detection line 120, and adjust the spread spectrum switching amplitude or rising edge 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.

[0038] Specifically, Figure 1 The dotted line in the middle refers to the main DC-DC radiation loop. The PWM wave controls the input loop 1102 and the output loop 1104 to switch continuously, and the output loop 1104 is continuously charged and discharged to achieve the purpose of controlling the output voltage. However, due to the rapidly changing voltage, DV / DT and DI / DT are both very large, so a large electromagnetic field will be radiated through the DC-DC conversion loop. Since the DCDC conversion loop is parallel to the PCB plane, the changing magnetic field generated is mainly perpendicular to the PCB plane.

[0039] According to Faraday's law of electromagnetic induction, the magnetic flux passing through a closed loop changes, and current will appear in the loop. This phenomenon is called electromagnetic induction, the current that appears is called induced current, and the induced electromotive force caused is called induced electromotive force.

[0040] like Figure 1 The outermost loop is the ring detection line 120 in the present invention. Through the ring detection line (senseline), the size of the loop radiation can be directly detected, and the loop radiation energy can be directly fed back to the DCDC integrated control element IC. Then, the integrated control element IC can reduce the DCDC conversion loop radiation by slowing down the rising edge of the PWM wave or turning on the spread spectrum through the control strategy that has been set long ago.

[0041] According to a radiation control circuit of a DC-DC conversion loop 110 provided by the present invention, the DC-DC conversion loop 110 includes an input loop 1102 and an output loop 1104; the input loop 1102 is composed of an input capacitor C in and integrated control element IC; among which, the input capacitor C in One end of 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 an input loop 1102; the output loop 1104 is composed of an output capacitor C out , integrated control element IC and inductor L; among them, the output capacitor C out One end of 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 an output loop 1104.

[0042] Specifically, the DCDC conversion loop includes an input loop 1102 and an output loop 1104; the input capacitor C in and output capacitor C out 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 , and the other end is connected to the ground pin GND of the integrated control element IC; in the output loop 1104, the output capacitor C out One end of the inductor is connected to one end of the inductor L, and the other end is connected to the ground pin GND; the other end of the inductor L is connected to the voltage output pin V of the integrated control component IC out .

[0043] According to a radiation control circuit of a DC-DC conversion loop 110 provided by the present invention, the ring detection line 120 is a single ring or a superposition of multiple rings.

[0044] Specifically, the annular detection line 120 can be a single ring, or multiple rings can be superimposed together through different layers. The size of the annular detection line 120 is adjusted according to the specific application requirements. Its working principle is based on the radiation and reception principle of electromagnetic waves. When the alternating electromagnetic field passes through the annular detection line 120, an induced current and an induced electromotive force will be generated. These induced electromotive forces will change with the radiation of the DCDC conversion loop. Through the set annular detection line 120, the reception of electromagnetic waves within a specific frequency range can be achieved. The characteristic of the annular detection line 120 is its receiving mode. Due to the symmetry of the annular structure, the annular detection line can offset other interference in the horizontal direction. In the vertical direction, it is usually directional to the electromagnetic field passing vertically.

[0045] The annular detection line 120 is designed as follows Figure 2 The single ring shown has the following advantages.

[0046] 1. Helps to reduce costs and improve production efficiency.

[0047] 2. Since there is only one ring, the PCB space occupied is relatively small, which is suitable for application scenarios with strict space restrictions.

[0048] The annular detection line 120 is designed as follows Figure 3 When multiple rings are superimposed, the following advantages are achieved.

[0049] 1. By stacking multiple rings together in different layers, the sensing area can be increased, thereby enhancing the ability to receive electromagnetic waves, which helps to capture weaker signals and improve the accuracy and reliability of detection.

[0050] 2. Multiple loops can be laid out on different PCB layers to detect electromagnetic radiation at different depths or in different directions. This multi-layer detection capability helps to gain a more comprehensive understanding of the electromagnetic environment and provide richer data support for the control of DCDC conversion loop radiation.

[0051] 3. The design of multiple ring superposition can offset external interference to a certain extent. Since each ring may be subject to different external interference, the influence of a single interference source on the overall detection result can be reduced through superposition processing. More accurate detection of electromagnetic waves of specific frequency or direction can be achieved.

[0052] According to a radiation control circuit of a DC-DC conversion loop 110 provided by the present invention, one end of a ring detection line 120 is connected to the third pin of an integrated control element IC, and the other end is connected to the fourth pin of the integrated control element IC.

[0053] Specifically, one end of the ring detection line 120 is connected to the I of the integrated control element IC. senseP pin, and the other end is connected to the I senseN Pin.

[0054] According to a radiation control circuit of a DC-DC conversion loop 110 provided by the present invention, the loop area of ​​the DC-DC conversion loop 110 is smaller than a preset area threshold, and the distance between a capacitor in the DC-DC conversion loop 110 and a pin on an integrated control element IC is smaller than a preset distance threshold.

[0055] Specifically, the routing of the DCDC conversion loop should ensure that the loop area is small enough, the filter capacitor is close enough to the DCDC integrated control component IC pin, and the parasitic inductance between the pins is small enough to ensure that the loop radiation has a certain adjustable space and the frequency spread is not large enough to meet the loop radiation requirements.

[0056] The present invention uses a ring detection line 120 to continuously detect the loop radiation of the DCDC, and controls the spread spectrum switch amplitude or the rising edge time of the DCDC PWM wave according to the loop radiation detected by the sense line, thereby achieving the purpose of controlling the DCDC conversion loop radiation, so that the DCDC conversion loop radiation is not too strong to affect other functional circuits.

[0057] The radiation control method provided by the present invention is described below. The radiation control method described below and the radiation control circuit of the DC-DC conversion loop 110 described above can correspond to each other.

[0058] like Figure 4The figure shows one of the flow charts of a method for radiation control based on any one of the above DC-DC conversion loops provided by the present invention, provided in an embodiment of the present invention, including: S410 : Acquire the radiation intensity of the DC-DC conversion loop 110 continuously detected by the annular detection line 120 .

[0059] According to a radiation control method provided by the present invention, before obtaining the radiation intensity of the DC-DC conversion loop 110 continuously detected by the annular detection line 120, the method includes: generating an alternating electromagnetic field when the DC-DC conversion loop 110 is powered on; when the alternating electromagnetic field passes through the annular detection line 120, generating an induced current and an induced electromotive force on the annular detection line 120; and sending the induced electromotive force as the detected loop radiation intensity to the integrated control element IC.

[0060] Specifically, when the DCDC conversion loop starts to work, an alternating electromagnetic field is generated around the loop due to the rapid switching action of the internal PWM wave controlling the input loop 1102 and the output loop 1104. This electromagnetic field is generated by the rapidly changing voltage and current (DV / DT and DI / DT).

[0061] The annular detection line 120 arranged near the DCDC conversion loop will sense the alternating electromagnetic field and generate an induced current and an induced electromotive force thereon. The magnitude of the induced electromotive force directly reflects the intensity of the radiation of the DCDC conversion loop.

[0062] The ring 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 the DCDC conversion loop radiation.

[0063] After receiving the signal transmitted by the ring detection line 120, the integrated control element IC will perform analysis and processing to obtain the current radiation intensity of the DCDC conversion loop. The analysis process can convert the analog signal of the induced electromotive force into a digital signal through analog-to-digital conversion, which is convenient for subsequent data processing.

[0064] According to the loop radiation intensity obtained by analysis, the integrated control element IC will adjust the PWM wave of the DCDC according to the preset control strategy. The adjustment methods include slowing down the rising edge speed of the PWM wave or turning on the spread spectrum function to reduce the intensity of electromagnetic radiation.

[0065] The adjusted PWM wave will be fed back to the DCDC conversion loop in real time, thereby changing its working state and controlling the intensity of the loop radiation. This process is dynamic and can be continuously fine-tuned according to the real-time situation of the loop radiation to achieve the best radiation control effect.

[0066] Through the above method, precise control of the radiation of the DCDC conversion loop is achieved, ensuring that the electromagnetic radiation generated by it is not too strong, thereby avoiding interference with other functional circuits.

[0067] S420: Adjust the spread spectrum switching amplitude or rising edge time of the DC-DC pulse width modulation wave according to the detected loop radiation intensity.

[0068] S430: Controlling the radiation intensity of the DC-DC conversion loop 110 according to the spread spectrum switching amplitude or the rising edge time of the DC-DC pulse width modulation wave.

[0069] According to a radiation control method provided by the present invention, the spread spectrum switching amplitude or rising edge time of the DC-DC pulse width modulation wave is adjusted according to the detected loop radiation intensity, specifically comprising: judging whether the current loop radiation intensity exceeds a preset safety range according to the detected loop radiation intensity; if it exceeds the preset safety threshold, reducing the spread spectrum switching amplitude of the DC-DC pulse width modulation wave or extending the rising edge 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 of the DC-DC pulse width modulation wave or the rising edge time of the DC-DC pulse width modulation wave to remain unchanged.

[0070] Specifically, Figure 5 The second schematic diagram of the radiation intensity control process is shown, which obtains the real-time loop radiation intensity data detected by the ring detection line 120, and compares this real-time data with the preset safe radiation intensity range. This preset safe range is set based on factors such as the safety, reliability and electromagnetic compatibility of the equipment.

[0071] If the detected loop radiation intensity exceeds the preset safety threshold, it means that the electromagnetic radiation generated during the current DCDC 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 PWM wave parameters of the DCDC. Specifically, one of the following two strategies or a combination thereof can be adopted: 1. Reducing the spread spectrum switching amplitude of the PWM wave can reduce the on and off speed of the switch tube, thereby reducing the generation of rapidly changing electromagnetic fields.

[0072] 2. Prolonging the rising edge time of the PWM wave, that is, slowing down the rate of change of voltage from low to high, also helps to reduce electromagnetic radiation.

[0073] If the detected loop radiation intensity is within the safety threshold, it means that the electromagnetic radiation generated by the current DCDC conversion process is within an acceptable range. In this case, the DCDC PWM wave will not be adjusted to maintain the stability and efficiency of the system. That is, the spread spectrum switching amplitude and rising edge time of the PWM wave will remain unchanged.

[0074] The whole process is dynamic. The system will continuously monitor the loop radiation intensity and adjust the PWM wave parameters in real time according to the actual situation.

[0075] By flexibly adjusting the operating parameters of the DCDC converter according to actual conditions, it is ensured that the DCDC converter can maintain good electromagnetic compatibility under different working conditions, while ensuring the stability and efficiency of the system and optimizing its electromagnetic radiation performance.

[0076] According to a radiation control method provided by the present invention, if the preset safety threshold is not exceeded, radiation intensity information is determined based on the radiation intensity detected by the annular detection line 120, and the radiation intensity information is fed back to the control center.

[0077] Specifically, when the ring detection line 120 continuously and accurately monitors the radiation intensity of the DCDC conversion loop, the integrated control element IC receives and processes the induced electromotive force signal transmitted by the ring detection line 120, which reflects the current radiation intensity. Through a special circuit or algorithm, the induced electromotive force signal is converted into a specific radiation intensity value or level, such as through signal amplification, filtering, analog-to-digital conversion and other processing processes.

[0078] The processed radiation intensity information (whether in numerical or level form) is transmitted to the control center via a data bus or wireless communication. The control center can be a microprocessor, microcontroller or other form of computing unit responsible for monitoring and management of the entire system.

[0079] At the control center, the received radiation intensity information is further processed, stored or used for other purposes, such as system performance analysis, fault warning, etc. The control center can record the received radiation intensity information in the internal memory for subsequent data analysis. By analyzing these data, the performance of the DCDC converter can be evaluated, its life can be predicted, and potential problems or anomalies can be discovered in a timely manner. In addition to recording data, the control center can also monitor the radiation intensity information in real time, as well as its correlation with other system parameters (such as temperature, voltage, current, etc.). If the radiation intensity is found to have abnormal fluctuations or exceed the expected range, the control center can trigger the corresponding early warning mechanism or protective measures. Based on the continuously collected radiation intensity information, the control center can adjust the operating parameters of the DCDC converter to optimize its performance and efficiency. For example, if the radiation intensity is always kept at a low level, the control center can also adjust the parameters of the PWM wave to improve the conversion efficiency.

[0080] By feeding back the detected radiation intensity information to the control center in real time, not only can adjustments be made when the radiation intensity exceeds the safety threshold, but the radiation intensity information can also be continuously monitored and recorded under normal operating conditions, providing important data support for system optimization and maintenance.

[0081] Figure 6 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 6 As shown, the electronic device may include: a processor 610, a communication interface 620, a memory 630 and a communication bus 640, wherein the processor 610, the communication interface 620 and the memory 630 communicate with each other through the communication bus 640. The processor 610 may call the logic instructions in the memory 630 to execute the radiation control method, which includes: obtaining the radiation intensity of the DC-DC conversion loop continuously detected by the annular detection line; adjusting the spread spectrum switch amplitude or rising edge time of the 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 switch amplitude or rising edge time of the DC-DC pulse width modulation wave.

[0082] In addition, the logic instructions in the above-mentioned memory 630 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0083] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the radiation control method provided by the above methods, which includes: obtaining the radiation intensity of the DC-DC conversion loop continuously detected by the annular detection line; adjusting the spread spectrum switching amplitude or rising edge time of the DC-DC pulse width modulation wave according to the detected loop radiation intensity; controlling the radiation intensity of the DC-DC conversion loop according to the spread spectrum switching amplitude or rising edge time of the DC-DC pulse width modulation wave.

[0084] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the radiation control method provided by the above-mentioned methods, the method comprising: obtaining the radiation intensity of the DC-DC conversion loop continuously detected by the annular detection line; adjusting the spread spectrum switching amplitude or rising edge time of the DC-DC pulse width modulation wave according to the detected loop radiation intensity; controlling the radiation intensity of the DC-DC conversion loop according to the spread spectrum switching amplitude or rising edge time of the DC-DC pulse width modulation wave.

[0085] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0086] Through the description of the above implementation modes, those skilled in the art can clearly understand that each implementation mode can be implemented by means of software plus a necessary general hardware platform, or of course by hardware. Based on such an understanding, the above technical solution can essentially or in other words be embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions 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 including integrated control components; an annular detection line, connected to the integrated control element, located directly below the DC-DC conversion loop, and 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 annular detection line, and adjust the spread spectrum switch amplitude or rising edge 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 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; 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, forming an input loop; The output loop is composed of an output capacitor, an integrated control element and an inductor; wherein 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 the second pin of the integrated control element to form an output loop.

3. The radiation control circuit of the DC-DC conversion loop according to claim 1, characterized in that: The annular 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. The radiation control circuit of the DC-DC conversion loop according to claim 1, characterized in that: The loop area of ​​the DC-DC conversion loop is smaller than a preset area threshold, and the distance between the capacitor in the DC-DC conversion loop and the pins on the integrated control element is smaller than a preset distance threshold.

6. A method for radiation control based on the radiation control circuit of the DC-DC conversion loop according to any one of claims 1 to 5, characterized in that: include: Acquiring the radiation intensity of the DC-DC conversion loop continuously detected by the ring detection line; According to the detected loop radiation intensity, adjusting the spread spectrum switching amplitude or rising edge time of the DC-DC pulse width modulation wave; The radiation intensity of the DC-DC conversion loop is controlled according to the spread spectrum switch amplitude or the rising edge time of the DC-DC pulse width modulation wave.

7. The radiation control method according to claim 6, characterized in that: The step of adjusting the spread spectrum switching amplitude or rising edge time of the DC-DC pulse width modulation wave according to the detected loop radiation intensity specifically includes: Determine whether the current loop radiation intensity exceeds a preset safety range 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 rising edge 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 rising edge time of the DC-DC pulse width modulation wave is controlled to remain unchanged.

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

9. The radiation control method according to claim 6, characterized in that: Before obtaining the radiation intensity of the DC-DC conversion loop continuously detected by the ring detection line, including: When the DC-DC conversion loop is energized, an alternating electromagnetic field is generated; When the alternating electromagnetic field passes through the annular detection line, an induced current and an induced electromotive force are generated on the annular detection line; The induced electromotive force is sent to the integrated control element as the detected loop radiation intensity.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method for radiation control according to any one of claims 6 to 9 is implemented.

Images