Digital power converter supporting hot plug

Abstract

The invention provides a digital power converter supporting hot plugging, which comprises a digital signal processor and a plugging detection module which are arranged on a mother board, the digital signal processor is in hot plugging connection with a plurality of power modules, the input end of the plugging detection module is connected with the power modules, and the output end of the plugging detection module is connected with the digital signal processor; the power converter is designed into a modular structure, so that each power module can be independently plugged, the plugging detection module can detect the plugging state of each power module in time and send the plugging signal to the digital signal processor, when the power module needs to be maintained or replaced, the faulted power module can be directly replaced, and the maintenance efficiency is improved. The whole system does not need to be closed, so that the downtime and the maintenance cost are reduced, and the reliability of the system is improved; and meanwhile, the plurality of power modules are connected by adopting a multi-phase interleaving parallel structure, so that the system can still keep stable output under the condition of high load, and the stability and the performance of the system are further improved.

Description

Technical Field

[0001] This application generally relates to the technical field of digital power converters, and particularly to a digital power converter supporting hot plugging. Background Art

[0002] In recent years, with the development and application of digital technologies, power converters based on digital control have gradually attracted attention; these digital control power converters use digital controllers such as digital signal processors (DSPs) to achieve precise control and regulation of the power conversion process; compared with traditional analog control methods, digital control technology has higher precision, more flexible control methods, and stronger anti-interference capabilities, and can achieve more efficient and stable power conversion.

[0003] In the prior art, although there are already some power converters based on digital control, most still adopt a single-module design. When maintenance or replacement is required, the entire system needs to be shut down, resulting in inconvenience and increased downtime. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a digital power converter supporting hot plugging and its control method that can solve the above-mentioned technical problems.

[0005] This application provides a digital power converter supporting hot plugging, including: A motherboard, on which a digital signal processor is provided; Power modules, there are multiple power modules, and the multiple power modules are hot-pluggably connected to the digital signal processor, and the multiple power modules are connected in a multi-phase interleaved parallel structure; the digital signal processor is used to output PWM signals to the power modules respectively, and detect the voltages of each port on each power module respectively; A plugging and unplugging detection module, which is provided on the motherboard, the output end of the plugging and unplugging detection module is connected to the digital signal processor, and the input ends of the plugging and unplugging detection module are respectively connected to the power modules, and the plugging and unplugging detection module is used to detect the plugging and unplugging state of the power modules, and generate a plugging and unplugging signal according to the plugging and unplugging state, and send the plugging and unplugging signal to the digital signal processor.

[0006] According to the technical solution provided by this application, each power module respectively has an input port, a first output port, and a second output port. The input port is used to input voltage, the first output port is used to output a first output voltage, and the second output port is used to output a second output voltage; the plugging and unplugging detection module is connected to the first output port and the second output port.

[0007] According to the technical solution provided by the present application, the power module includes: a main power circuit and a drive circuit; The main power circuit includes: a first inductor, a second inductor, a first capacitor, a second capacitor, a third capacitor, a first switch, a second switch, a third switch, a fourth switch, a fifth switch, and a sixth switch; Wherein, the input port is located at both ends of the first capacitor, and the first capacitor has a first end and a second end. The first end is connected to the collector of the first switch, and the emitter of the first switch is respectively connected to the collector of the second switch and one end of the first inductor; the emitter of the second switch is connected to the second end; the first output port is located at both ends of the second capacitor, and the second capacitor has a third end and a fourth end. The third end is connected to the collector of the third switch, and the emitter of the third switch is respectively connected to the collector of the fourth switch and the other end of the first inductor. The emitter of the fourth switch is connected to the fourth end, and the second end is also connected to the emitter of the fourth switch; the second output port is located at both ends of the third capacitor, and the third capacitor has a fifth end and a sixth end; the other end of the first inductor is connected to one end of the second inductor, and the other end of the second inductor is respectively connected to the emitter of the fifth switch and the collector of the sixth switch. The collector of the fifth switch is connected to the third end, and the emitter of the sixth switch is connected to the sixth end, and the emitter of the sixth switch is further connected to the emitter of the fourth switch; The input end of the drive circuit is connected to the digital signal processor, and the output end of the drive circuit is respectively connected to the gates of the first switch, the second switch, the third switch, the fourth switch, the fifth switch, and the sixth switch; the drive signal is used to receive the PWM signal and send drive signals to the first switch, the second switch, the third switch, the fourth switch, the fifth switch, and the sixth switch to respectively control the conduction and cutoff of the first switch, the second switch, the third switch, the fourth switch, the fifth switch, and the sixth switch.

[0008] According to the technical solution provided by the present application, a first differential circuit is further provided between the digital signal processor and the drive circuit, and the first differential circuit is used to eliminate common-mode noise and improve the integrity of the PWM signal.

[0009] According to the technical solution provided by the present application, the power module further includes a signal conditioning circuit. The input end of the signal conditioning circuit is connected to the fifth end, and the output end of the signal conditioning circuit is connected to the digital signal processor. The signal conditioning circuit is used to sample the analog signals of the input voltage, the first output voltage, and the second output voltage in real time, and after filtering, feedback them to the digital signal processor to detect the voltages of each port on each power module.

[0010] According to the technical solution provided by the present application, the digital signal processor includes: an analog-to-digital conversion interface and an output interface. The output interface is connected to the first differential circuit, and the output interface is used to output a PWM signal to the first differential circuit. The analog-to-digital conversion interface is connected to a second differential circuit, and the input end of the second differential circuit is connected to the signal conditioning circuit.

[0011] According to the technical solution provided by the present application, the digital signal processor further includes: a pattern recognition module, which is used to switch to the optimal control mode according to the input voltage, the expected value of the first output voltage, and the expected value of the second output voltage; a PID modulation module, which includes a first PID modulation unit and a second PID modulation unit. The first PID modulation unit is used to compensate the output voltage loop of the first output port to adjust the first output voltage, and the second PID modulation unit is used to compensate the output voltage loop of the second output port to adjust the second output voltage.

[0012] According to the technical solution provided by the present application, the multi-phase interleaved parallel structure cancels the (n - 1)th harmonic by staggering the phases of the PWM signals of n power modules by 360° / n in sequence, so as to reduce the current ripples of the input and output.

[0013] The beneficial effects of the present application are as follows: The present application provides a hot-swappable digital power converter, comprising: a motherboard, a digital signal processor and a plugging detection module disposed on the motherboard, a plurality of power modules are hot-swappably connected to the digital signal processor, the input ends of the plugging detection module are respectively connected to the power modules, and the output end of the plugging detection module is connected to the digital signal processor; the power converter of the present application is designed as a modular structure, so that each power module can be independently plugged and unplugged, and the plugging detection module can timely detect the plugging and unplugging state of each power module and send a plugging and unplugging signal to the digital signal processor in time. When it is necessary to maintain or replace a power module, the faulty power module can be directly replaced without shutting down the entire system, thereby reducing the downtime and maintenance cost of the system and improving the reliability and maintainability of the system; at the same time, the plurality of power modules are connected by a multi-phase interleaved parallel structure, so that the system can still maintain a stable output under high load conditions, reducing the demand for an output filter and further improving the stability and performance of the system. Description of the Drawings

[0014] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects and advantages of the present application will become more apparent: Figure 1 is a schematic diagram of a hot-swappable digital power converter provided by the present application; Figure 2 is a schematic diagram of the power module provided by the present application; Figure 3 is a schematic diagram of the digital signal processor 3 provided by the present application; Figure 4 is a schematic diagram of the modulation process provided by the present application.

[0015] In the figure: 1, motherboard; 2, plugging detection module; 3, digital signal processor; 4, power module; 5, drive circuit; 6, first differential circuit; 7, signal conditioning circuit; 8, second differential circuit; 9, pattern recognition module; 10, first PID modulation unit; 11, second PID adjustment unit; L1, first inductor; L2, first inductor; C1, first capacitor; C2, second capacitor; C3, third capacitor; Q1, first switch tube; Q2, second switch tube; Q3, third switch tube; Q4, fourth switch tube; Q5, fifth switch tube; Q6, sixth switch tube; V1: input voltage; V2: first output voltage; V3: second output voltage; V2_ref, desired voltage reference value of the first output voltage; V3_ref, desired voltage reference value of the second output voltage; Err1, first voltage error value; Err2, second voltage error value. Detailed Embodiments

[0016] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. In addition, it should be noted that for the convenience of description, only the parts related to the invention are shown in the drawings.

[0017] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments.

[0018] Embodiment 1 Please refer to Figures 1-4 , a digital power converter supporting hot plug provided by the present application includes: A motherboard 1, on which a digital signal processor 3 is provided; A power module 4, there are multiple power modules 4, and the multiple power modules 4 are hot-pluggably connected to the digital signal processor 3, and the multiple power modules 4 are connected in a multi-phase interleaved parallel structure; the digital signal processor 3 is used to output PWM signals to the power module 4 respectively, and detect the voltages of each port on each power module 4 respectively; A plugging and unplugging detection module 2, which is provided on the motherboard 1, the output end of the plugging and unplugging detection module 2 is connected to the digital signal processor 3, and the input ends of the plugging and unplugging detection module 2 are respectively connected to the power module 4, and the plugging and unplugging detection module 2 is used to detect the plugging and unplugging state of the power module 4, and generate a plugging and unplugging signal according to the plugging and unplugging state, and send the plugging and unplugging signal to the digital signal processor 3.

[0019] Specifically, as Figure 1 shown, in the present application, several power modules 4 can be connected to the digital signal processor 3 at the same time, and the clock signal is uniformly given by the digital signal processor 3 to achieve the purpose of phase shift; Specifically, when n power modules 4 need to be connected in parallel, the multi-phase interleaved parallel structure staggers the phases of the PWM signals of the n power modules 4 by 360° / n in sequence. Due to the phase shift effect, the n-1 harmonic is cancelled, so that the input and output current ripples are greatly reduced; at the same time, the inductors and capacitors of each power module 4 work together to filter and stabilize the voltage; for example, when three power modules 4 are connected in parallel, the phases of the three-way PWM signals are staggered by 360° / 3 = 120° in sequence; when a new power module 4 is inserted, the plugging and unplugging detection module 2 sends a plugging and unplugging signal to the digital signal processor 3, and the digital signal processor 3 automatically allocates a new PWM phase, such as staggering the phases of four power modules 4 by 90°, and adjusts the PID parameters to balance the loads of each module to ensure the stable operation of the system; Working principle: In this application, the power converter is designed as a modular structure, enabling each power module 4 to be independently plugged and unplugged. Moreover, the plug and unplug detection module 2 can promptly detect the plug and unplug status of each power module 4 and send the plug and unplug signal to the digital signal processor 3 in a timely manner. When it is necessary to maintain or replace the power module 4, the faulty power module 4 can be directly replaced without shutting down the entire system, thereby reducing the system downtime and maintenance costs and improving the system reliability and maintainability. At the same time, multiple power modules 4 are connected in a multi-phase interleaved parallel structure, enabling the system to maintain a stable output even under high load conditions, reducing the demand for output filters, and further enhancing the system stability and performance.

[0020] In some embodiments, the power module 4 respectively has an input port, a first output port, and a second output port. The input port is used to input voltage V1, the first output port is used to output the first output voltage V2, and the second output port is used to output the second output voltage V3. The plug and unplug detection module 2 is connected to the first output port and the second output port.

[0021] Specifically, in this application, the power module 4 is a three-port voltage source module. Therefore, the power module 4 has an input port, a first output port, and a second output port. The input port is used to input voltage V1, the first output port is used to output the first output voltage V2, and the second output port is used to output the second output voltage V3. Specifically, the plug and unplug detection module 2 is connected to the first output port and the second output port to detect the first output voltage V2 and the second output voltage V3. When it detects the insertion or removal of the power module 4, the plug and unplug detection module 2 sends the corresponding plug and unplug signal to the digital signal processor 3, thereby perceiving the plug and unplug status of the power module 4 in real time and making corresponding processing.

[0022] In some embodiments, the power module 4 includes: a main power circuit and a drive circuit 5. The main power circuit includes: a first inductor L1, a second inductor L2, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first switch Q1, a second switch Q2, a third switch Q3, a fourth switch Q4, a fifth switch Q5, and a sixth switch Q6. Among them, the input port is located at both ends of the first capacitor C1, and the first capacitor C1 has a first end and a second end. The first end is connected to the collector of the first switching transistor Q1, and the emitter of the first switching transistor Q1 is respectively connected to the collector of the second switching transistor Q2 and one end of the first inductor L1; the emitter of the second switching transistor Q2 is connected to the second end; the first output port is located at both ends of the second capacitor C2, and the second capacitor C2 has a third end and a fourth end. The third end is connected to the collector of the third switching transistor Q3, and the emitter of the third switching transistor Q3 is respectively connected to the collector of the fourth switching transistor Q4 and the other end of the first inductor L1. The emitter of the fourth switching transistor Q4 is connected to the fourth end, and the second end is also connected to the emitter of the fourth switching transistor Q4; the second output port is located at both ends of the third capacitor C3, and the third capacitor C3 has a fifth end and a sixth end; the other end of the first inductor L1 is connected to one end of the second inductor L2, and the other end of the second inductor L2 is respectively connected to the emitter of the fifth switching transistor Q5 and the collector of the sixth switching transistor Q6. The collector of the fifth switching transistor Q5 is connected to the third end, and the emitter of the sixth switching transistor Q6 is connected to the sixth end, and the emitter of the sixth switching transistor Q6 is also connected to the emitter of the fourth switching transistor Q4; The input end of the driving circuit 5 is connected to the digital signal processor 3, and the output end of the driving circuit 5 is respectively connected to the gates of the first switching transistor Q1, the second switching transistor Q2, the third switching transistor Q3, the fourth switching transistor Q4, the fifth switching transistor Q5, and the sixth switching transistor Q6; the driving signal is used to receive the PWM signal and send driving signals to the first switching transistor Q1, the second switching transistor Q2, the third switching transistor Q3, the fourth switching transistor Q4, the fifth switching transistor Q5, and the sixth switching transistor Q6 to respectively control the conduction and cutoff of the first switching transistor Q1, the second switching transistor Q2, the third switching transistor Q3, the fourth switching transistor Q4, the fifth switching transistor Q5, and the sixth switching transistor Q6.

[0023] Specifically, as Figure 2 shown, the power module 4 includes: a main power circuit and a driving circuit 5, where the main power circuit includes: a first inductor L1, a second inductor L2, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first switching transistor Q1, a second switching transistor Q2, a third switching transistor Q3, a fourth switching transistor Q4, a fifth switching transistor Q5, and a sixth switching transistor Q6; the above topology not only has the advantages of simple structure, high efficiency, wide voltage range, etc., and is suitable for the application of power supplies with a wide input voltage V1 range, high efficiency, high power density, and high reliability; at the same time, this topology is easy to expand, and its derivative method can be extended to four ports or even more ports; Specifically, in this embodiment, the driving circuit 5 is connected to a power supply, and the power supply is used to supply power to the power module 4; Specifically, the digital signal processor 3 sends a PWM signal to the drive circuit 5, and the drive circuit 5 controls the conduction and cut-off of the first switch tube Q1, the second switch tube Q2, the third switch tube Q3, the fourth switch tube Q4, the fifth switch tube Q5, and the sixth switch tube Q6, so as to stably set the first output voltage V2 and the second output voltage V3 to the target values of the selected control mode. Specifically, the first switch tube Q1, the second switch tube Q2, the third switch tube Q3, the fourth switch tube Q4, the fifth switch tube Q5, and the sixth switch tube Q6 are all insulated gate bipolar transistors IGBTs, which have a gate, a collector, and an emitter, wherein the gate is connected to the drive circuit 5 to realize the control of the switch tube.

[0024] In some embodiments, a first differential circuit 6 is further provided between the digital signal processor 3 and the drive circuit 5. The first differential circuit 6 is used to eliminate common-mode noise and improve the integrity of the PWM signal.

[0025] Specifically, as Figure 2 shown, a first differential circuit 6 is further provided between the digital signal processor 3 and the drive circuit 5. The digital signal processor 3 generates a PWM signal, which is converted into a differential signal through the differential circuit to eliminate common-mode noise. Subsequently, the differential signal is transmitted to the drive circuit 5, and the drive circuit 5 restores the differential signal to a single-ended signal for controlling the conduction and cut-off of the switch tube; the transmission of the differential signal can effectively suppress electromagnetic interference EMI in the power supply system and improve signal integrity.

[0026] In some embodiments, the power module 4 further includes a first differential circuit 7. The input end of the first differential circuit 7 is connected to the fifth end, and the output end of the first differential circuit 7 is connected to the digital signal processor 3; the first differential circuit 7 is used to sample the analog signals of the input voltage V1, the first output voltage V2, and the second output voltage V3 in real time, and after filtering, feedback them to the digital signal processor 3 to detect the voltages of each port on each power module 4.

[0027] Specifically, as Figure 2 shown, the power module 4 further includes a first differential circuit 7. The first differential circuit 7 samples the analog signals of the input voltage V1, the first output voltage V2, and the second output voltage V3 in real time, filters and amplifies the analog signals to ensure that the signals input to the digital signal processor 3 are pure and within the input range of the analog-to-digital conversion interface, thereby realizing the detection of the voltages of each port on each power module 4.

[0028] In some embodiments, the digital signal processor 3 includes: an analog-to-digital conversion interface and an output interface. The output interface is connected to the first differential circuit 6, and the output interface is used to output a PWM signal to the first differential circuit 6. The analog-to-digital conversion interface is connected to a second differential circuit 8, and the input end of the second differential circuit 8 is connected to the first differential circuit 7.

[0029] In this embodiment, as Figure 3 shown, the number of the analog-to-digital conversion interface and the output interface is the same as the number of ports of the power module 4 to achieve the adjustment of the voltages of different ports; In this embodiment, the second differential circuit 8 is also connected to the power supply and the ground wire, and a first resistor is connected between the power supply and the ground wire. Specifically, a second differential circuit 8 is provided between the analog-to-digital conversion interface and the first differential circuit 7. The feedback analog signal of the power module 4, such as the output voltage sampling, is transmitted back to the digital signal processor 3 through the second differential circuit 8 to ensure that the signal is not interfered by noise during the transmission process. At the same time, the digital signal processor 3 adjusts the duty cycle of the PWM signal according to the feedback analog signal to achieve closed-loop control.

[0030] In some embodiments, the digital signal processor 3 further includes: a pattern recognition module 9, and the pattern recognition module 9 is used to switch to the optimal control mode according to the input voltage V1, the expected value of the first output voltage V2, and the expected value of the second output voltage V3; a PID modulation module, and the PID modulation module includes: a first PID modulation unit 10 and a second PID modulation unit 11. The first PID modulation unit 10 is used to compensate the output voltage loop of the first output port to adjust the first output voltage V2, and the second PID modulation unit 11 is used to compensate the output voltage loop of the second output port to adjust the second output voltage V3.

[0031] Specifically, the power converter provided by the present application adopts a dual-PID modulation method. Through a series of precise calculations and regulations, the stable control of the voltages of the first output port and the second output port is achieved, so that each output port has a dedicated PID modulation module, realizing the independent control of the output voltages of the two ports, reducing the risk of system oscillation and instability, improving the reliability and stability of the system, and effectively ensuring the stable operation of the power converter under different working conditions; The specific modulation process is as follows: First, the digital signal processor 3 detects the real-time input voltage V1, the first output voltage V2, and the second output voltage V3 of each module. In order to ensure the accuracy and reliability of the sampled data, the method of sampling multiple times and taking the average value is adopted. For example, in this embodiment, each sampling is performed 10 times and the average value is calculated. This method can effectively reduce the influence of the single measurement error on the system and improve the stability and accuracy of the sampled data; After the digital signal processor 3 obtains the real-time input voltage V1, the first output voltage V2, and the second output voltage V3, the pattern recognition module 9 compares the magnitudes of the input voltage V1, the desired voltage reference value V2_ref of the first output voltage, and the desired voltage reference value V3_ref of the second output voltage to select the optimal control mode; in this embodiment, 13 control modes are preset as shown in the following table:

[0032] For example, when V1 < V2 - ref < V3_ref, the system determines it as Mode1; when V1 < V3_ref < V2_ref, it is determined as Mode2, etc. Different modes correspond to different modulation methods and control parameters to adapt to diverse working scenarios and load requirements; After determining the control mode, the digital signal processor 3 compares the sampled first output voltage V2 and second output voltage V3 with their respective desired voltage reference values, and accurately calculates the corresponding voltage error values; for the first output port, the first voltage error value Err1 is calculated, and for the second output port, the second voltage error value Err2 is calculated; these two voltage error values reflect the deviation between the actual output voltage and the desired voltage; Subsequently, based on the calculated first voltage error value Err1 and second voltage error value Err2, the digital signal processor 3 performs independent PID operations on the first output port and the second output port respectively; during the operation, in strict accordance with the principle of the PID control algorithm, the proportional P, integral I, and derivative D links are accurately calculated, and the calculation results are superimposed to obtain the control quantity for adjusting the output. Specifically, for the first output port, the calculation is performed by the first PID modulation unit 10; for the second output port, the calculation is performed by the second PID modulation unit 11 to ensure that the voltage control of the two ports is independent of each other and does not interfere with each other; Subsequently, according to the control quantity obtained by the PID calculation, the digital signal processor 3 further converts it into the duty cycle of the corresponding PWM signal. The magnitude of the control quantity directly determines the duty cycle of the PWM signal. The larger the control quantity, the larger the duty cycle of the PWM signal, which means the longer the conduction time of the switching tubes in the power module 4, and thus the higher the output voltage; conversely, the smaller the control quantity, the smaller the duty cycle, and the lower the output voltage; the digital signal processor 3 generates the corresponding PWM signal according to the calculated duty cycle. These PWM signals precisely control the conduction and cutoff of the switching tubes (such as the first switching tube Q1 - the sixth switching tube Q6) in the power module 4 through the drive circuit 5; through the precise control of the switching tubes, the output voltage of the power module 4 is effectively regulated to stabilize within the desired voltage value range; During the entire modulation process, the digital signal processor 3 continuously monitors the changes in the first output voltage V2 and the second output voltage V3 in real time. Once a voltage fluctuation or deviation from the desired voltage reference value is detected, the digital signal processor 3 will quickly re-perform pattern recognition, PID calculation, and PWM signal adjustment based on the new sampling data, forming a closed-loop feedback control system; Through this real-time feedback and adjustment mechanism, the system can optimize the control strategy in a timely manner according to the actual operating conditions, ensuring that the first output voltage V2 and the second output voltage V3 always remain stable under different load conditions and working environments, effectively improving the stability and reliability of the system and meeting the requirements of various complex application scenarios; Specifically, in the embodiment, the desired voltage reference values of the first output voltage V2 and the second output voltage V3 are selected to control the mode selection, which can avoid the influence on pattern recognition during the initial startup and load mutation, making the mode switching process smoother, avoiding fluctuations in the output voltage or current, and improving the switching stability and load response speed of the system between different working modes.

[0033] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A digital power converter supporting hot plugging, characterized in that: include: A motherboard (1), wherein a digital signal processor (3) is provided on the motherboard (1); A power module (4), wherein a plurality of the power modules (4) are provided, the plurality of the power modules (4) are hot-swappable connected to the digital signal processor (3), and the plurality of the power modules (4) are connected in a multi-phase staggered parallel structure; the digital signal processor (3) is used to output PWM signals to the power modules (4) respectively, and to detect the voltage of each port on each power module (4) respectively; A plug-in detection module (2), the plug-in detection module (2) being arranged on the motherboard (1), the output end of the plug-in detection module (2) being connected to the digital signal processor (3), and the input end of the plug-in detection module (2) being respectively connected to the power module (4), the plug-in detection module (2) being used to detect the plug-in status of the power module (4), and to generate a plug-in signal according to the plug-in status, and to send the plug-in signal to the digital signal processor (3).

2. The hot-swappable digital power converter according to claim 1, characterized in that: The power module (4) has an input port, a first output port and a second output port respectively, the input port is used to input a voltage (V1), the first output port is used to output a first output voltage (V2), and the second output port is used to output a second output voltage (V3); the plug-in detection module (2) is connected to the first output port and the second output port.

3. The hot-swappable digital power converter according to claim 2, characterized in that: The power module (4) comprises: a main power circuit and a drive circuit (5); The main power circuit comprises: a first inductor (L1), a second inductor (L2), a first capacitor (C1), a second capacitor (C2), a third capacitor (C3), a first switch tube (Q1), a second switch tube (Q2), a third switch tube (Q3), a fourth switch tube (Q4), a fifth switch tube (Q5) and a sixth switch tube (Q6); The input port is located at two ends of the first capacitor (C1), and the first capacitor (C1) has a first end and a second end, the first end is connected to the collector of the first switch tube (Q1), and the emitter of the first switch tube (Q1) is respectively connected to the collector of the second switch tube (Q2) and one end of the first inductor (L1); the emitter of the second switch tube (Q2) is connected to the second end; the first output port is located at two ends of the second capacitor (C2), and the second capacitor (C2) has a third end and a fourth end, the third end is connected to the collector of the third switch tube (Q3), and the emitter of the third switch tube (Q3) is respectively connected to the collector of the fourth switch tube (Q4) and the other end of the first inductor (L1). , the emitter of the fourth switch tube (Q4) is connected to the fourth end, and the second end is also connected to the emitter of the fourth switch tube (Q4); the second output port is located at both ends of the third capacitor (C3), and the third capacitor (C3) has a fifth end and a sixth end; the other end of the first inductor (L1) is connected to one end of the second inductor (L2), and the other end of the second inductor (L2) is respectively connected to the emitter of the fifth switch tube (Q5) and the collector of the sixth switch tube (Q6), the collector of the fifth switch tube (Q5) is connected to the third end, the emitter of the sixth switch tube (Q6) is connected to the sixth end, and the emitter of the sixth switch tube (Q6) is also connected to the emitter of the fourth switch tube (Q4); The input end of the drive circuit (5) is connected to the digital signal processor (3), and the output end of the drive circuit (5) is respectively connected to the gate of the first switch tube (Q1), the gate of the second switch tube (Q2), the gate of the third switch tube (Q3), the gate of the fourth switch tube (Q4), the gate of the fifth switch tube (Q5) and the gate of the sixth switch tube (Q6); the drive signal is used to receive the PWM signal and send a drive signal to the first switch tube (Q1), the second switch tube (Q2), the third switch tube (Q3), the fourth switch tube (Q4), the fifth switch tube (Q5) and the sixth switch tube (Q6), so as to respectively control the conduction and shutdown of the first switch tube (Q1), the second switch tube (Q2), the third switch tube (Q3), the fourth switch tube (Q4), the fifth switch tube (Q5) and the sixth switch tube (Q6).

4. The hot-swappable digital power converter according to claim 3, characterized in that: A first differential circuit (6) is also provided between the digital signal processor (3) and the drive circuit (5), and the first differential circuit (6) is used to eliminate common-mode noise and improve the integrity of the PWM signal.

5. The hot-swappable digital power converter according to claim 4, characterized in that: The power module (4) further comprises a first differential circuit (7), wherein an input end of the first differential circuit (7) is connected to the fifth end, and an output end of the first differential circuit (7) is connected to the digital signal processor (3); the first differential circuit (7) is used for real-time sampling of analog signals of the input voltage (V1), the first output voltage (V2) and the second output voltage (V3), and feeding back the analog signals to the digital signal processor (3) after filtering, so as to detect the voltage of each port on each power module (4).

6. The hot-swappable digital power converter according to claim 5, characterized in that: The digital signal processor (3) comprises: an analog-to-digital conversion interface and an output interface, the output interface being connected to the first differential circuit (6), the output interface being used to output a PWM signal to the first differential circuit (6); the analog-to-digital conversion interface being connected to a second differential circuit (8), the input end of the second differential circuit (8) being connected to the first differential circuit (7).

7. The hot-swappable digital power converter according to claim 6, characterized in that: The digital signal processor (3) further comprises: A mode recognition module (9), the mode recognition module (9) being used to switch to an optimal control mode according to an input voltage (V1), an expected value of a first output voltage (V2), and an expected value of a second output voltage (V3); A PID modulation module, the PID modulation module comprising: a first PID modulation unit (10) and a second PID modulation unit (11), the first PID modulation unit (10) being used to compensate for an output voltage loop of the first output port so as to adjust the first output voltage (V2), and the second PID modulation unit (11) being used to compensate for an output voltage loop of the second output port so as to adjust the second output voltage (V3).

8. The hot-swappable digital power converter according to claim 1, characterized in that: The multi-phase staggered parallel structure sequentially staggers the phases of the PWM signals of the n power modules (4) by 360° / n, so that the n-1th harmonic is offset, thereby reducing the input and output current ripples.

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