A high-performance power board
By integrating filtering circuits, multiple independent outputs, and intelligent control on the power board, the problems of increased output ripple and noise in existing power supplies under high load conditions are solved. This achieves miniaturization, stability, and fast response of high-performance power boards, meeting the domestic production needs of fields such as military.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EHIWAY MICROELECTRONIC SCI & TECH (SUZHOU) CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-30
AI Technical Summary
Existing power supply equipment exhibits significantly increased output ripple and noise under high load conditions, poor stability, difficulty in balancing size and power consumption, slow dynamic response speed, and reliance on imported core components, failing to meet the requirements for domestic production.
Design a high-performance power board that uses a filter circuit to suppress electromagnetic interference, provides multiple independent outputs and achieves precise voltage regulation through a digital potentiometer and FPGA chip, incorporates current and voltage protection circuits and ESD protection, uses an aluminum substrate to improve heat dissipation, and achieves intelligent control through a communication interface.
It achieves miniaturization, high stability, multi-channel adjustable output, and fast dynamic response, meeting the power supply stability and accuracy requirements under high load conditions. At the same time, it has domestically produced core components, improving the portability and working efficiency of the equipment.
Smart Images
Figure CN224438821U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of power supply technology, and in particular relates to a high-performance power supply board. Background Technology
[0002] In fields such as military equipment, industrial automation, communication systems, and precision laboratory instruments, the performance requirements for power supplies are becoming increasingly stringent. They not only need to provide stable, low-noise, and high-power output, but also require power supplies to be small in size, portable, have fast dynamic response, and have all core components domestically produced.
[0003] However, the power supply equipment currently available on the market has the following technical limitations:
[0004] 1. Limited number of output channels and insufficient performance: Most mainstream current products have only one or a few output channels. Under high load conditions, their output ripple and noise often increase significantly, seriously affecting the stability of the power supply and the accuracy of downstream equipment;
[0005] 2. The contradiction between size, power consumption and localization: Existing miniaturized multi-channel power supplies usually cannot balance high power output and low power consumption, which limits their applications; while multi-channel power supplies with higher power are bulky, have poor portability, and are not convenient for field mobile testing and deployment. More importantly, their core components generally rely on imports, which cannot meet the mandatory requirements of supply chain security and full localization of components in sensitive fields such as military industry.
[0006] 3. Insufficient dynamic response performance: Many power supplies have a slow response speed when faced with sudden load changes, resulting in a long recovery time for output voltage fluctuations, which reduces the working efficiency and reliability of electrical equipment.
[0007] Therefore, it is necessary to design a high-performance power board with advantages such as small size, high stability, and multi-channel adjustable output. Utility Model Content
[0008] This invention provides a high-performance power board with advantages such as small size, high stability, and multi-channel adjustable output.
[0009] Other objects and advantages of this utility model can be further understood from the technical features disclosed herein.
[0010] To achieve one or more of the above objectives or other objectives, this utility model provides a high-performance power board, including a power input, a filter circuit, a surge protection circuit, and a power conversion module. The power conversion module includes a full-bridge switching circuit and a transformer. The power conversion module has multiple independent outputs. A digital potentiometer is connected to the voltage regulation module of each independent output of the power conversion module to adjust the value of each independent output of the power conversion module based on circuit feedback.
[0011] The transformer of the power conversion module includes a main winding and multiple secondary windings, each winding corresponding to an independent output.
[0012] Each independent output is equipped with a current protection circuit, a voltage protection circuit, and an ESD protection circuit; each independent output is connected to the multi-output interface after being processed by the current protection circuit, the voltage protection circuit, and the ESD protection circuit.
[0013] The power board also includes a voltage acquisition module and a current acquisition module, which are connected to each independent output. The voltage acquisition module and the current acquisition module acquire the current and voltage values of each independent output. The digital potentiometer adjusts the values of each independent output of the power conversion module based on the current and voltage values of each independent output.
[0014] The current acquisition module uses a Hall effect sensor to sample the current value of each independent output of the power conversion module.
[0015] The power board is equipped with a controller, which communicates with the digital potentiometer, voltage sampling module, and current sampling module. Based on the current and voltage values of each independent output fed back by the voltage and current sampling modules, the controller controls the potentiometer to adjust the value of each independent output.
[0016] The controller is an FPGA chip, and the power supply board is equipped with an FPGA power supply module, an FPGA storage module, and a crystal oscillator circuit. The FPGA power supply module supplies power to the FPGA chip, the FPGA chip obtains data from the FPGA storage module, and the crystal oscillator circuit provides a clock signal to the FPGA chip.
[0017] The power board is equipped with a communication interface for communication between the FPGA chip and the host computer; the communication interface includes an RS485 interface, a CAN bus interface, an Ethernet interface, and a USB interface.
[0018] The power conversion module has no more than 8 independent outputs.
[0019] The high-performance power board has an aluminum substrate.
[0020] Compared with existing technologies, the main advantages of this utility model include: 1. The power board of this utility model features a filter circuit at the input end to suppress electromagnetic interference, and simultaneously adds current protection circuits and voltage protection circuits at the output end to achieve overvoltage and overcurrent protection, ensuring output safety. 2. The power board of this utility model has multiple independent outputs, each of which uses a high-precision digital potentiometer for voltage regulation. Each output is independently adjustable, making it more practical. 3. This utility model uses an FPGA chip to achieve intelligent control of the power board.
[0021] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the power board structure of this utility model.
[0024] Figure 2 This is a schematic diagram of the power conversion module on the power board of this utility model. Detailed Implementation
[0025] The foregoing and other technical contents, features, and effects of this utility model will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the scope of this utility model.
[0026] Example 1
[0027] Example 1 provides a high-performance power supply board, see [link / reference] Figure 1The power board includes a power input port, a filter circuit, a surge protection circuit, and a power conversion module. External input enters the power board through the power input port and is processed by the filter circuit to suppress electromagnetic interference at the input end. The power output from the filter circuit is processed by the surge protection circuit before entering the power conversion module. The power conversion module includes a full-bridge switching circuit, an LLC resonant converter, and a transformer. The power conversion module has multiple independent outputs. A digital potentiometer is connected to the voltage regulation module of each independent output of the power conversion module to adjust the value of each independent output of the power conversion module based on circuit feedback.
[0028] like Figure 2 The schematic diagram of the power conversion module shows that the DC input is processed by a filter circuit to suppress input voltage ripple and reduce electromagnetic interference. The full-bridge switching circuit consists of four MOSFETs, which convert the input power into a high-frequency AC square wave. The high-frequency AC square wave output from the full-bridge switch is then fed to a transformer for voltage transformation (the output frequency of the full-bridge switch is matched to the operating frequency range of the transformer). The switching frequency of the MOSFET full-bridge switching circuit is controlled by a resonant controller, ensuring it operates near the circuit's resonant frequency. Specifically, the resonant controller compensates for input fluctuations or load changes based on feedback from the DC output voltage and current. The DC output, after being transformed by the transformer, is then rectified by the MOSFET rectifier circuit before being output.
[0029] The power conversion module also includes overcurrent protection circuits and overvoltage protection circuits to protect the power conversion module.
[0030] The transformer includes a primary winding and multiple secondary windings. Each secondary winding corresponds to an independent output, and each independent output is equipped with a voltage regulating module. A digital potentiometer can control the voltage regulating module to adjust the value of each output.
[0031] The voltage regulation of each independent output channel by the digital potentiometer is achieved by controlling the voltage regulation module set in each output channel. Specifically, it is achieved by changing the resistance value of the digital potentiometer to adjust the voltage division ratio of the voltage regulation module. The scheme of adjusting the voltage division ratio by the potentiometer is a common technology, and will not be described in detail here.
[0032] The power conversion module has multiple independent outputs, which are output to the outside through multiple independent output interfaces. Between the multiple independent outputs and the multiple independent output interfaces, there are also power protection circuits, voltage protection circuits, and ESD protection circuits (electrostatic discharge protection circuits). The power protection circuits and voltage protection circuits provide overvoltage and overcurrent protection to ensure output safety. The ESD protection circuit is used to protect the equipment from electrostatic discharge damage.
[0033] Each independent output is processed by a current protection circuit, a voltage protection circuit, and an ESD protection circuit before being connected to a multi-output interface. External power modules can be directly plugged into this output interface for use.
[0034] The power conversion module in Example 1 has no more than 8 independent outputs, and the number of interfaces of the corresponding multi-independent output interface corresponds to the number of channels of the multi-independent output of the power conversion module.
[0035] See Figure 1 The power board also includes a voltage acquisition module and a current acquisition module, which are connected to each independent output of the power conversion module. The voltage and current acquisition modules provide feedback on the current and voltage values of each independent output of the power conversion module. A digital potentiometer adjusts each independent output of the power conversion module based on these values. Specifically, the current acquisition module uses a Hall effect sensor to sample the current value of each independent output of the power conversion module.
[0036] To achieve intelligent control, the power board is equipped with a controller. This controller communicates with a digital potentiometer, a voltage sampling module, and a current sampling module. Based on the current and voltage values of each independent output of the power conversion module fed back from the voltage and current sampling modules, the controller adjusts the potentiometer to adjust each independent output of the power conversion module. This automatic control via the control module offers the advantages of simple control and high efficiency.
[0037] In Embodiment 1, the controller uses an FPGA chip. The power supply board is equipped with an FPGA power supply module, an FPGA storage module, and a crystal oscillator circuit. The FPGA power supply module supplies power to the FPGA chip. The FPGA chip obtains data from the FPGA storage module. The data obtained from the storage module can be used for FPGA configuration. The crystal oscillator circuit provides a clock signal to the FPGA chip.
[0038] The storage module of the FPGA chip built into the power board is NOR FLASH.
[0039] In addition to the FPGA chip used in Embodiment 1, the control module of this application can also be other control modules such as microcontrollers. However, the controller storage module and power supply module built into the power board need to be adjusted accordingly.
[0040] The power supply board is equipped with communication interfaces for communication between the FPGA chip and the host computer. These interfaces include an RS485 interface, a CAN bus interface, an Ethernet interface (bandwidth options include 1000M / 100M / 10M), and a USB interface (USB 3.0 / USB 2.0). The host computer has a user interface for displaying real-time data and status of the power supply board. The host computer's user interface also allows for setting the power supply board's parameters.
[0041] The power board can also reserve additional power supply modules for use by other devices. These power supply modules can use standard modules, which facilitates the connection and use of other devices.
[0042] To ensure the heat dissipation performance of the power board, the high-performance power board uses an aluminum substrate. Thermal paste can be applied between the components placed on the aluminum substrate and the substrate to increase heat dissipation.
[0043] The above provides a detailed description of a high-performance power board provided by this utility model. Specific examples have been used to illustrate the structure and working principle of this utility model. The descriptions of the embodiments are merely for the purpose of helping to understand the method and core idea of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this utility model.
Claims
1. A high performance power panel comprising a power input, a filter circuit, a surge protection circuit, a power conversion module, characterized in that, The power conversion module includes a full-bridge switching circuit and a transformer; The power conversion module has multiple independent outputs; A digital potentiometer is connected to the voltage regulation module of each independent output of the power conversion module, and adjusts the value of each independent output of the power conversion module based on circuit feedback.
2. The high-performance power supply board according to claim 1, characterized in that, The transformer of the power conversion module includes a main winding and multiple secondary windings, each winding corresponding to an independent output.
3. A high-performance power supply board according to claim 1, characterized in that, Each independent output is equipped with current protection circuit, voltage protection circuit and ESD protection circuit; Each independent output is processed by the current protection circuit, the voltage protection circuit, and the ESD protection circuit before being connected to the multi-output interface.
4. A high-performance power supply board according to claim 1, characterized in that, The power board also includes a voltage acquisition module and a current acquisition module, which are connected to each independent output of the power conversion module. The voltage acquisition module and the current acquisition module acquire the current and voltage values of each independent output of the power conversion module. The digital potentiometer adjusts the values of each independently output channel of the power conversion module based on the current and voltage values of each channel.
5. A high-performance power supply board according to claim 4, characterized in that, The current acquisition module uses a Hall effect sensor to sample the current value of each independent output of the power conversion module.
6. A high-performance power supply board according to claim 4, characterized in that, The power board is equipped with a controller, which communicates with the digital potentiometer, voltage sampling module, and current sampling module. Based on the current and voltage values of each independent output fed back by the voltage and current sampling modules, the controller controls the potentiometer to adjust the value of each independent output.
7. A high-performance power supply board according to claim 6, characterized in that, The controller is an FPGA chip, and the power board is equipped with an FPGA power supply module, an FPGA storage module, and a crystal oscillator circuit. The FPGA power supply module supplies power to the FPGA chip, the FPGA chip obtains data from the FPGA storage module, and the crystal oscillator circuit provides a clock signal to the FPGA chip.
8. A high-performance power supply board according to claim 7, characterized in that, The power board is provided with a communication interface, which is used for the FPGA chip to communicate with the host computer. The communication interfaces include an RS485 interface, a CAN bus interface, an Ethernet interface, and a USB interface.
9. A high-performance power supply board according to claim 1, characterized in that, The power conversion module has no more than 8 independent outputs.
10. A high-performance power supply board according to claim 1, characterized in that, The high-performance power board has an aluminum substrate.