A universal power board circuit system based on testability analysis

Abstract

The present invention discloses a universal power supply board circuit system based on testability analysis, wherein the system includes a power supply module, an input protection and filtering circuit, and a redundant circuit; the redundant circuit adopts a dual-channel input and controls an N-type MOSFET through an ORing controller XC4355DAA to achieve redundant power supply; m temperature sensors are arranged in the power supply module; the universal power supply board circuit system also includes a health management circuit, which collects the operating voltage, current, and temperature monitoring data of the power supply board circuit system; the power supply board testability analysis is performed based on health management software, and the health management software is composed of management software configuration items and assistance software configuration items. The present invention has the advantages of real-time monitoring and intelligent management; reducing downtime risks and ensuring the continuity of critical tasks; high efficiency and energy saving; multi-point temperature monitoring; fault self-diagnosis mechanism; data analysis and cloud connection; flexible design and adaptability.

Description

Technical Field

[0001] The present invention belongs to the technical field of testability design and analysis, and in particular relates to a universal power supply board circuit system based on testability analysis. Background Art

[0002] In modern electronic devices, the stability and reliability of the power supply system are crucial to ensuring the proper functioning of the entire system. With the rapid development of information technology, the performance and functionality of electronic devices are increasing, and so are the demands placed on power supplies. In industrial automation, communications equipment, and computer systems, power supply boards must not only provide stable voltage and current but also exhibit robust interference immunity and fault self-diagnosis and recovery mechanisms. Against this backdrop, universal power supply board circuit systems based on testability analysis have emerged as an effective way to optimize power supply performance and enhance system reliability.

[0003] First, traditional power management systems often rely on simple protection and filtering circuits, failing to monitor and analyze the power supply's operating status in real time. With advances in power electronics, power management solutions using integrated circuits and digital control technologies are becoming increasingly popular. By monitoring parameters like current, voltage, and temperature in real time, timely responses can be made to anomalies, preventing equipment damage and production downtime.

[0004] Secondly, in many critical application scenarios, such as data centers, medical equipment, and aerospace systems, any power failure can have serious consequences. Ensuring that the system can still operate normally when a power path fails is a key requirement of modern power supply design.

[0005] Furthermore, with the rise of renewable energy, the input sources of power systems are becoming more diverse. Traditional AC / DC and DC / DC conversion technologies need to be continuously optimized to adapt to different input voltages and output requirements.

[0006] Finally, considering the adaptability of the power supply system in various environments, designers need to make comprehensive improvements in hardware and software. Summary of the Invention

[0007] In view of the above-mentioned defects in the prior art, the present invention provides a universal power board circuit system based on testability analysis, which is characterized by:

[0008] The universal power board circuit system includes a power module, input protection and filtering circuit, 12V AC / DC conversion circuit, 12V DC / DC conversion circuit, 5V step-down circuit, 3.3V step-down circuit, -12V isolated DC / DC circuit and redundant circuit;

[0009] The input protection and filtering circuit completes the input end overcurrent, overvoltage and reverse connection protection. The 12V AC / DC conversion circuit converts the AC voltage into a DC 12V voltage output. The 12VDC / DC conversion circuit converts the DC voltage into a DC 12V voltage output. The above two DC 12V voltages are combined into one output through a redundant circuit. The 5V step-down circuit converts the 12V voltage into a 5V voltage output. The 3.3V step-down circuit converts the 12V voltage into a 3.3V voltage output. The -12V isolated DC / DC circuit is used to convert the 12V voltage into a -12V voltage output. The redundant circuit is a circuit for constructing an N+1 redundant power supply. It uses a dual-channel input and controls the N-type MOSFET through the ORing controller XC4355DAA to achieve redundant power supply.

[0010] Arranging m temperature sensors in the power module;

[0011] The universal power board circuit system further includes a health management circuit, which collects operating voltage, current and temperature monitoring data of the power board circuit system;

[0012] Perform power board testability analysis based on health management software, which consists of management software configuration items and assistance software configuration items;

[0013] The management software configuration item obtains voltage, current, and temperature monitoring data of the power board circuit system through the I2C bus, obtains PCIE acquisition data of the power board circuit system from the assistance software configuration item through the serial port, sends the monitoring data and the PCIE acquisition data to the fault diagnosis module for fault analysis and diagnosis, and reports the diagnosis result to the host computer, wherein the management software configuration item uses the following formula to monitor the comprehensive power of each output terminal in the power board:

[0014]

[0015] The following formula is used for temperature monitoring:

[0016]

[0017] Where P is power, U is voltage, I is current, T is current temperature, T0 is reference temperature, k is temperature coefficient, R is resistance, is temperature attenuation coefficient, is current sensitivity coefficient, I th is the current threshold, S j is the reading of the jth temperature sensor, and is the weighting coefficient.

[0018] The input protection and filtering circuit includes a protection circuit and a filtering circuit. The protection circuit includes a fuse and a varistor (MOV). The fuse is selected according to the rated output power and minimum input voltage of the power supply. The fuse model used in the AC input protection and filtering circuit is RR1032F0003300-J, with a rated current of 3A and a rated voltage of 300VAC. The two TVS tubes connected in series are selected as SMCJ170CA.

[0019] The minimum DC power input is 18V, so the maximum input current Imax = 18.33A. The fuse used in the DC input protection and filter circuit is RR1032F003072, with a rated current of 30A and a rated voltage of 72V. The TVS tube is SMCJ40CA.

[0020] The filter circuit includes a common-mode inductor, a differential-mode inductor, an X capacitor, a Y capacitor, and a parallel resistor for discharging the X capacitor.

[0021] The 12V AC / DC conversion circuit uses the APL220W350T12SN module, which has an input voltage range of 85VAC to 264VAC, an output voltage of 12V, a baseplate temperature range of -40°C to +100°C, a standard half-brick package, an output power of 350W, and a conversion efficiency of 92% at full load. It also features input over- and undervoltage protection, output overvoltage protection, output short-circuit protection, and overtemperature protection.

[0022] The 12V DC / DC converter circuit uses the EQBS360-028S12NTB2L module, which has an input voltage range of DC16V to 40V, an output voltage of 12V, a substrate temperature range of -40°C to +100°C, a standard quarter-brick package, an output power of 360W, and a conversion efficiency of 94% at full load. It also features input over- and under-voltage protection, output overvoltage protection, output short-circuit protection, and over-temperature protection.

[0023] Among them, the 5V step-down circuit converts the 12V DC voltage into a 5V output, which is then filtered and used by the load. The model selected is the HCE4630ML module. This module adopts a BUCK topology structure and converts the input voltage of 4.5V to 16V into an output voltage of 0.6V-5.3V. The specific output voltage value is set by an external resistor. It has two outputs with a maximum total output current of 30A. The size is 16mm*16mm*4.41mm. The module has input over-voltage and under-voltage protection, output overvoltage protection, overcurrent protection, over-temperature protection, and parallel current sharing.

[0024] Among them, the 3.3V step-down circuit converts the 12V DC voltage into a 3.3V output, which is then filtered for use by the load. The model selected is the HCE4620ML module. This module adopts a BUCK topology to convert the input voltage of 4.5V to 16V into an output voltage of 0.6V-5.3V. The specific output voltage value is set by an external resistor. It has two outputs with a maximum output current of 13A respectively. The size is 16mm*16mm*4.41mm. The module has input over-voltage and under-voltage protection, output overvoltage protection, overcurrent protection, over-temperature protection, and parallel current sharing.

[0025] The -12V isolated DC / DC circuit uses the HMA20DC18S12SN module, an isolated DC-DC converter circuit that converts the input DC9V-36V to a DC12V output with an output power of 20W and a conversion efficiency of 87%.

[0026] Among them, the redundant circuit model controls the conversion of two 12V power supplies into a single output, and the two control N-type MOSFET tubes connected in parallel are selected as SFS03R01GF.

[0027] Among them, a current limiting circuit is set at the output end of the universal power supply board, and the current limiting value is 12A. The current limiting circuit is connected in parallel, and the model selected is the XC388QDA module. The maximum current limiting of the module is 5A, and the input range is 4V~48V.

[0028] The universal power supply card circuit system further includes an output filter circuit, and the 5V step-down circuit and the 3.3V step-down circuit use non-isolated converters;

[0029] The -12V isolated DC / DC circuit uses an isolated converter with an output ripple of 60mV.

[0030] The 12V output is filtered by CLC after the current limiting circuit.

[0031] The universal power supply card circuit system also includes an anti-reverse connection circuit, which is composed of an NMOS tube as a switch. The gate of the NMOS is driven by a voltage pump, and the voltage pump is powered by an LDO to generate a stable 12V power supply.

[0032] The present invention has the following advantages:

[0033] The system integrates comprehensive power and temperature monitoring capabilities, enabling real-time acquisition of voltage, current, and temperature data. This real-time monitoring capability enables the system to dynamically adjust operating conditions and promptly respond to abnormal situations. Through intelligent management, the system automatically performs fault diagnosis and protection, reducing human intervention and improving reliability.

[0034] The N+1 redundant design ensures that the system continues to operate even if one power path fails. This design enhances system reliability, especially in critical applications such as data centers and medical equipment. The redundant design enables continuous system operation in the event of a failure, reducing the risk of downtime and ensuring mission-critical continuity.

[0035] By optimizing power management strategies (such as dynamic voltage scaling), the energy efficiency of power modules can be significantly improved and energy loss can be reduced. This not only improves system performance but also reduces operating costs, helping to achieve sustainable development goals.

[0036] Placing temperature sensors at multiple key locations allows for more comprehensive monitoring of the system's thermal status. This multi-point monitoring prevents overheating caused by a single point of failure. By monitoring the temperature of different areas, heat distribution can be more effectively managed, improving heat dissipation efficiency and extending equipment life.

[0037] The system integrates a self-diagnostic function that automatically switches to a redundant power source or initiates other protective measures when an anomaly is detected. This self-diagnostic capability reduces troubleshooting time, improves system maintenance convenience, and reduces maintenance costs.

[0038] The system can transmit monitoring data to the cloud in real time for data analysis and remote monitoring.

[0039] Cloud data analysis can help users conduct more in-depth performance evaluations and trend forecasts, supporting intelligent decision-making.

[0040] The system is designed to be flexible and can adapt to changes in different input sources (such as renewable energy), enhancing the system's adaptability. This adaptability enables the system to perform well in a variety of application scenarios and meet the needs of different users. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an illustrative and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0042] Figure 1 is a block diagram showing a circuit board consistent with an embodiment of the present invention;

[0043] Figure 2 FIG1 is a block diagram showing the composition of a power supply circuit consistent with an embodiment of the present invention. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only some, not all, of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0045] The terms used in the embodiments of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a," "an," "the," and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, and unless the context clearly indicates otherwise, "a plurality" generally includes at least two.

[0046] It should be understood that although the terms "first," "second," "third," etc. may be used to describe "...," these "..." should not be limited to these terms. These terms are merely used to distinguish "...." For example, "first..." could also be referred to as "second...", and similarly, "second..." could also be referred to as "first..." without departing from the scope of the present invention.

[0047] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0048] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0049] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or device. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or device comprising the element.

[0050] Large-scale ship systems contain numerous sensor acquisition devices and actuators. These typically operate in a chimney-like fashion, requiring the development of specialized applications tailored to these devices. This leads to a severe coupling problem between these applications and devices. Therefore, an effective method is needed to improve data processing and control efficiency, facilitate the expansion of ship equipment systems, and simplify the application development process, addressing the severe coupling problem of ship equipment, data, and applications in existing technologies.

[0051] like Figure 1 As shown, the present invention discloses a universal power supply board circuit system based on testability analysis, wherein:

[0052] The universal power board circuit system includes a power module, input protection and filtering circuit, 12V AC / DC conversion circuit, 12V DC / DC conversion circuit, 5V step-down circuit, 3.3V step-down circuit, -12V isolated DC / DC circuit and redundant circuit;

[0053] The input protection and filtering circuit completes the input end overcurrent, overvoltage and reverse connection protection. The 12V AC / DC conversion circuit converts the AC voltage into a DC 12V voltage output. The 12VDC / DC conversion circuit converts the DC voltage into a DC 12V voltage output. The above two DC 12V voltages are combined into one output through a redundant circuit. The 5V step-down circuit converts the 12V voltage into a 5V voltage output. The 3.3V step-down circuit converts the 12V voltage into a 3.3V voltage output. The -12V isolated DC / DC circuit is used to convert the 12V voltage into a -12V voltage output. The redundant circuit is a circuit for constructing an N+1 redundant power supply. It uses a dual-channel input and controls the N-type MOSFET through the ORing controller XC4355DAA to achieve redundant power supply.

[0054] Arranging m temperature sensors in the power module;

[0055] The universal power board circuit system further includes a health management circuit, which collects operating voltage, current and temperature monitoring data of the power board circuit system;

[0056] Perform power board testability analysis based on health management software, which consists of management software configuration items and assistance software configuration items;

[0057] The management software configuration item obtains the voltage, current, and temperature monitoring data of the power board circuit system through the I2C bus, obtains the PCIE acquisition data of the power board circuit system from the assistance software configuration item through the serial port, sends the monitoring data and the PCIE acquisition data to the fault diagnosis module for fault analysis and diagnosis, and reports the diagnosis result to the host computer, wherein the management software configuration item uses the following formula to monitor the output end comprehensive power of the power board:

[0058]

[0059] The following formula is used for temperature monitoring:

[0060]

[0061] Where P is power, U is voltage, I is current, T is current temperature, T0 is reference temperature, k is temperature coefficient, R is resistance, is temperature attenuation coefficient, is current sensitivity coefficient, I th is the current threshold, S j is the reading of the jth temperature sensor, and is the weighting coefficient.

[0062] Among them, comprehensive power monitoring is mainly performed at the output end of the power board, especially at the output end of the 12VAC / DC conversion circuit and the 12V DC / DC conversion circuit.

[0063] The specific monitoring circuit may include a current sensor and a voltage sensor, which transmit the output voltage and current signals to the health management circuit.

[0064] The main function of integrated power monitoring is to calculate the output power of the power supply in real time to ensure that the power supply system operates within a safe range.

[0065] By monitoring the output power, potential overload conditions can be detected in a timely manner, thereby triggering the protection mechanism to prevent damage to the power module.

[0066] Temperature monitoring is usually performed near key components of the power board, including:

[0067] Transformer and rectifier for 12V AC / DC conversion circuit;

[0068] Switching elements and inductors for 12V DC / DC converter circuits;

[0069] Buck module (5V and 3.3V buck circuit) and its heat sink.

[0070] Monitoring uses sensors such as thermistors (NTC or PTC), and these sensors are usually centrally managed by health management circuits.

[0071] The main function of temperature monitoring is to ensure that the power board operates within a safe operating temperature range to prevent failures caused by overheating.

[0072] By monitoring the temperature, the cooling system (such as fans or heat sinks) can be dynamically adjusted to ensure that the system effectively dissipates heat under high load conditions.

[0073] Temperature monitoring data can also be used for fault prediction, helping to identify potential problems that may result from prolonged high-temperature operation.

[0074] k is the proportionality factor in the temperature monitoring formula. It is usually determined by the characteristics of the sensor and can be measured experimentally. For example, when using an NTC thermistor, k can be calculated using the sensor's characteristic curve.

[0075] α is the temperature attenuation coefficient, which indicates the effect of temperature on power. It is usually obtained by fitting experimental data. It can be obtained by measuring power output at different temperatures and performing regression analysis.

[0076] β is the current sensitivity coefficient, which indicates the degree to which current changes affect power monitoring. It is obtained by experimentally measuring power changes at different currents and performing data fitting.

[0077] δ is the weighting factor for multiple temperature sensors and is used to calculate the integrated temperature from multiple sensor readings.

[0078] For example, different sensors can be given different weights according to their relative positions and importance.

[0079] The current temperature T refers to a temperature value measured by multiple temperature sensors, and can be an average temperature or a reading of a specific sensor.

[0080] It should also be noted that the monitoring location of the comprehensive power is the output port, which mainly monitors the power of each output module of the power board, for example:

[0081] Output power of 12V AC / DC conversion circuit.

[0082] Output power of 12V DC / DC conversion circuit.

[0083] Output power of 5V and 3.3V step-down circuits.

[0084] Load: Monitors the power consumption of the load devices connected to the power board.

[0085] By measuring voltage (U) and current (I) in real time, the output power of each module can be calculated. The purpose of power monitoring is to ensure that each module operates within the rated power range and to detect overload or faults in a timely manner.

[0086] Temperature monitoring focuses on the temperatures of key components and modules within the power supply board, such as the transformer, rectifier, and inductor. The temperature of step-down modules (such as 5V and 3.3V step-down circuits) is also monitored. The overall temperature of the power supply switching elements and the circuit board is also monitored.

[0087] Multi-point temperature sensors measure the temperature T at different locations in real time. Temperature monitoring can help identify high-temperature areas so that appropriate cooling measures can be taken to prevent damage caused by overheating.

[0088] The input protection and filtering circuit includes a protection circuit and a filtering circuit. The protection circuit includes a fuse and a varistor MOV. The fuse is selected according to the rated output power and minimum input voltage of the power supply. The rated output power of 12V, 3.3V, 5V and -12V power supplies are:

[0089] P 12V =120W,P 3.3V =52.8W,P 5V =125W,P -12V =10W

[0090] Under rated load conditions, the efficiency of the 12V conversion circuit is η1 = 85%, the efficiency of the 3.3V and 5V conversion circuits is η2 = 90%, and the efficiency of the -12V conversion circuit is η3 = 85%;

[0091] The minimum value of AC power input is V inmin =187VAC. When the AC input voltage is 187VAC, the maximum input current is:

[0092]

[0093] The fuse used in the AC input protection and filtering circuit is RR1032F0003300-J, with a rated current of 3A and a rated voltage of 300VAC. The two TVS tubes connected in series are SMCJ170CA.

[0094] The minimum DC power input is 18V, so the maximum input current Imax = 18.33A. The fuse used in the DC input protection and filter circuit is RR1032F003072, with a rated current of 30A and a rated voltage of 72V. The TVS tube is SMCJ40CA.

[0095] The filter circuit includes a common-mode inductor, a differential-mode inductor, an X capacitor, a Y capacitor, and a parallel resistor for discharging the X capacitor.

[0096] The output power requirement of the 12V AC / DC converter circuit is 120W. The 12V output voltage serves as the input for other conversion circuits, resulting in a total power requirement of 330W. The APL220W350T12SN module is used for the 12V AC / DC converter circuit. This module has an input voltage range of 85VAC to 264VAC, an output voltage of 12V, a substrate temperature range of -40°C to +100°C, and a standard half-brick package. The output power is 350W, and the conversion efficiency is 92% at full load. It also features input over- and undervoltage protection, output overvoltage protection, output short-circuit protection, and overtemperature protection.

[0097] The total output power requirement of the 12V DC / DC converter circuit is 330W, and the model selected is the EQBS360-028S12NTB2L module. This module has an input voltage range of DC16V to 40V, an output voltage of 12V, a substrate temperature range of -40°C to +100°C, a standard 1 / 4 brick package, an output power of 360W, and a conversion efficiency of 94% at full load. It also has input over- and undervoltage protection, output overvoltage protection, output short-circuit protection, and overtemperature protection.

[0098] Among them, the 5V step-down circuit converts the 12V DC voltage into a 5V output, which is then filtered and used by the load. The model selected is the HCE4630ML module. This module adopts a BUCK topology structure and converts the input voltage of 4.5V to 16V into an output voltage of 0.6V-5.3V. The specific output voltage value is set by an external resistor. It has two outputs with a maximum total output current of 30A. The size is 16mm*16mm*4.41mm. The module has input over-voltage and under-voltage protection, output overvoltage protection, overcurrent protection, over-temperature protection, and parallel current sharing.

[0099] Among them, the 3.3V step-down circuit converts the 12V DC voltage into a 3.3V output, which is then filtered for use by the load. The model selected is the HCE4620ML module. This module adopts a BUCK topology to convert the input voltage of 4.5V to 16V into an output voltage of 0.6V-5.3V. The specific output voltage value is set by an external resistor. It has two outputs with a maximum output current of 13A respectively. The size is 16mm*16mm*4.41mm. The module has input over-voltage and under-voltage protection, output overvoltage protection, overcurrent protection, over-temperature protection, and parallel current sharing.

[0100] The -12V isolated DC / DC circuit uses the HMA20DC18S12SN module, an isolated DC-DC converter circuit that converts the input DC9V-36V to a DC12V output with an output power of 20W and a conversion efficiency of 87%.

[0101] The redundant circuit model uses a dedicated ORing controller XC4355DAA to control the conversion of two 12V power supplies into a single output, and the two control N-type MOSFET tubes connected in parallel are selected as SFS03R01GF.

[0102] Among them, a current limiting circuit is set at the output end of the universal power supply board, and the current limiting value is 12A. The current limiting circuit is connected in parallel, and the model selected is the XC388QDA module. The maximum current limiting of the module is 5A, and the input range is 4V~48V.

[0103] The universal power supply card circuit system further includes an output filter circuit, and the 5V step-down circuit and the 3.3V step-down circuit use non-isolated converters;

[0104] The -12V isolated DC / DC circuit uses an isolated converter with an output ripple of 60mV.

[0105] The 12V output is filtered by CLC after the current limiting circuit.

[0106] The universal power supply card circuit system also includes an anti-reverse connection circuit, which is composed of an NMOS tube as a switch. The gate of the NMOS is driven by a voltage pump, and the voltage pump is powered by an LDO to generate a stable 12V power supply.

[0107] In the present invention, the power P calculated based on the power monitoring results can be displayed in real time on the user interface or stored in a data logger for further analysis.

[0108] If the monitored power is close to or exceeds the rated power of the device, it may indicate that the system is overloaded. If there is a large difference between the power output and input, it may indicate low system efficiency and energy loss.

[0109] If the power is overloaded, consider reducing the load or adjusting the operating mode to avoid damage.

[0110] Evaluate system design and component selection, consider more efficient power management solutions, or use more efficient power modules.

[0111] In high-load situations, consider adding redundant power supplies to share the load.

[0112] The temperature monitoring result T can be used for real-time monitoring and trend analysis (such as the trend of temperature change over time) through data recording.

[0113] If the temperature exceeds the set safety threshold, it may indicate insufficient system cooling or a poor operating environment.

[0114] Sustained high temperatures can cause component degradation and failure, impacting the long-term reliability of the system.

[0115] If the monitored temperature is too high, take cooling measures, such as enabling fans, adding heat sinks, or improving air flow.

[0116] Regularly check the cooling of critical components to ensure they are functioning properly and are not blocked by dust or other material.

[0117] If possible, improve the working environment by lowering the ambient temperature or increasing ventilation.

[0118] Combining power and temperature monitoring results allows for a more comprehensive system analysis and assessment of the overall health of the power system.

[0119] If there is a mismatch between power and temperature (for example, high power and low temperature, or low power and high temperature), it may indicate a poor system design or a component failure.

[0120] By analyzing monitoring data, potential failures can be predicted and preventive maintenance can be performed.

[0121] If a module or component is found to be repeatedly overheating or overloaded, consider repair or replacement to prevent failure.

[0122] Regularly analyze historical monitoring data to look for trends and patterns to make appropriate system adjustments and optimizations.

[0123] It should be noted that the computer-readable medium mentioned above in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, device, or component. In the present disclosure, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to wires, optical cables, RF (radio frequency), etc., or any suitable combination thereof.

[0124] The computer-readable medium may be included in the electronic device, or may exist independently without being incorporated into the electronic device.

[0125] Computer program code for performing the operations of the present disclosure may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on the remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0126] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, program segment, or a part of code, and the module, program segment, or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of the boxes in the block diagram and / or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0127] The units involved in the embodiments described in this disclosure may be implemented in software or hardware, wherein the name of a unit does not necessarily limit the unit itself.

[0128] The above introduces the preferred embodiments of the present invention, which is intended to make the spirit of the present invention clearer and easier to understand, and is not intended to limit the present invention. Any modifications, replacements, and improvements made within the spirit and principles of the present invention should be included in the scope of protection outlined by the claims attached to the present invention.

Claims

1. A universal power supply card circuit system based on testability analysis, characterized by: The universal power board circuit system includes a power module, input protection and filtering circuit, 12VAC / DC conversion circuit, 12V DC / DC conversion circuit, 5V step-down circuit, 3.3V step-down circuit, -12V isolated DC / DC circuit and redundant circuit; The input protection and filtering circuit completes the input end overcurrent, overvoltage and reverse connection protection. The 12VAC / DC conversion circuit converts the AC voltage into a DC 12V voltage output. The 12V DC / DC conversion circuit converts the DC voltage into a DC 12V voltage output. The above two DC 12V voltages are combined into one output through a redundant circuit. The 5V step-down circuit converts the 12V voltage into a 5V voltage output. The 3.3V step-down circuit converts the 12V voltage into a 3.3V voltage output. The -12V isolated DC / DC circuit is used to convert the 12V voltage into a -12V voltage output. The redundant circuit is a circuit for constructing an N+1 redundant power supply. It uses a dual-channel input and controls the N-type MOSFET through the ORing controller XC4355DAA to achieve redundant power supply. Arranging m temperature sensors in the power module; The universal power board circuit system further includes a health management circuit, which collects operating voltage, current and temperature monitoring data of the power board circuit system; Perform power board testability analysis based on health management software, which consists of management software configuration items and assistance software configuration items; The management software configuration item obtains voltage, current, and temperature monitoring data of the power board circuit system through the I2C bus, obtains PCIE acquisition data of the power board circuit system from the assistance software configuration item through the serial port, sends the monitoring data and the PCIE acquisition data to the fault diagnosis module for fault analysis and diagnosis, and reports the diagnosis result to the host computer, wherein the management software configuration item uses the following formula to monitor the comprehensive power of each output terminal in the power board: The following formula is used for temperature monitoring: Among them, P is power, U is voltage, I is current, T is current temperature, T0 is reference temperature, k is temperature coefficient, R is resistance, α is the temperature attenuation coefficient, β is the current sensitivity coefficient, I th is the current threshold, S j is the jth temperature sensor reading, σ is the weighting coefficient.

2. The universal power board circuit system based on testability analysis according to claim 1, characterized in that: The input protection and filtering circuit includes a protection circuit and a filtering circuit. The protection circuit includes a fuse and a varistor MOV. The fuse is selected according to the rated output power and minimum input voltage of the power supply. The fuse model used in the AC input protection and filtering circuit is RR1032F0003300-J, with a rated current of 3A and a rated voltage of 300VAC. The two TVS tubes connected in series are selected as SMCJ170CA. The minimum DC power input is 18V, so the maximum input current Imax = 18.33A. The fuse used in the DC input protection and filter circuit is RR1032F003072, with a rated current of 30A and a rated voltage of 72V. The TVS tube is SMCJ40CA. The filter circuit includes a common-mode inductor, a differential-mode inductor, an X capacitor, a Y capacitor, and a parallel resistor for discharging the X capacitor.

3. The universal power supply board circuit system based on testability analysis according to claim 1, characterized in that: The 12V AC / DC conversion circuit uses the APL220W350T12SN module, which has an input voltage range of 85VAC to 264VAC, an output voltage of 12V, a baseplate temperature range of -40°C to +100°C, a standard 1 / 2 brick package, an output power of 350W, and a conversion efficiency of 92% at full load.

4. The universal power supply board circuit system based on testability analysis according to claim 1, characterized in that: The 12V DC / DC conversion circuit uses the EQBS360-028S12NTB2L module, which has an input voltage range of DC16V to 40V, an output voltage of 12V, a substrate temperature range of -40°C to +100°C, a standard 1 / 4 brick package, an output power of 360W, and a conversion efficiency of 94% at full load.

5. The universal power supply board circuit system based on testability analysis according to claim 1, characterized in that: The 5V step-down circuit converts 12V DC voltage into 5V output, which is then filtered and used by the load. The model used is the HCE4630ML module. This module adopts a BUCK topology and converts the input voltage of 4.5V to 16V into an output voltage of 0.6V-5.3V. The specific output voltage value is set by an external resistor. It has two outputs with a maximum total output current of 30A. The size is 16mm*16mm*4.41mm.

6. The universal power supply board circuit system based on testability analysis according to claim 1, characterized in that: The 3.3V step-down circuit converts 12V DC voltage into 3.3V output, which is then filtered and used by the load. The model used is the HCE4620ML module. This module adopts a BUCK topology to convert the input voltage of 4.5V to 16V into an output voltage of 0.6V-5.3V. The specific output voltage value is set by an external resistor. It has two outputs with a maximum output current of 13A. The size is 16mm*16mm*4.41mm.

7. The universal power supply board circuit system based on testability analysis according to claim 1, characterized in that: The -12V isolated DC / DC circuit model uses the HMA20DC18S12SN module, which is an isolated DC-DC conversion circuit that converts the input DC9V-36V to DC12V output with an output power of 20W and a conversion efficiency of 87%.

8. The universal power supply board circuit system based on testability analysis according to claim 1, characterized in that: The redundant circuit model controls two 12V power supplies to convert them into a single output, and the two control N-type MOSFET tubes connected in parallel are selected as SFS03R01GF.

9. The universal power board circuit system based on testability analysis according to claim 1, characterized in that: A current limiting circuit is set at the output end of the universal power supply board, and the current limiting value is 12A. The current limiting circuit is connected in parallel, and the model selected is the XC388QDA module. The maximum current limiting of the module is 5A, and the input range is 4V~48V.

10. The universal power board circuit system based on testability analysis according to claim 1, characterized in that: The universal power supply card circuit system also includes an output filter circuit, a 5V step-down circuit and a 3.3V step-down circuit using a non-isolated converter; The -12V isolated DC / DC circuit uses an isolated converter with an output ripple of 60mV. The 12V output is filtered by CLC after the current limiting circuit. The universal power supply card circuit system also includes an anti-reverse connection circuit, which is composed of an NMOS tube as a switch. The gate of the NMOS is driven by a voltage pump, and the voltage pump is powered by an LDO to generate a stable 12V power supply.

Images