A voltage control circuit applied to DC-DC conversion of a computer power supply of a general interface, a computer power supply and electronic equipment

Abstract

The utility model discloses a kind of voltage control circuit of DC-DC conversion applied to computer power supply of general interface, computer power supply and electronic equipment. By integrating main control unit and independent power supply management unit in single circuit board, the intelligent voltage control architecture with high anti-interference characteristic is constructed, the accurate voltage stabilization, dynamic regulation and millisecond level fault protection to DC-DC conversion module are realized, and power noise is completely isolated by special power supply circuit, the control precision, operating reliability and whole machine stability of computer power supply system are significantly improved.

Description

Technical Field

[0001] This utility model belongs to the field of computer power supply technology, specifically relating to a voltage control circuit for DC-DC conversion in a computer power supply with a universal interface, a computer power supply, and electronic equipment. Background Technology

[0002] Modern computers, especially high-performance desktops and workstations, place increasingly higher demands on the efficiency, stability, and reliability of their internal power supplies. Computer power supplies typically convert alternating current (AC) to direct current (DC) and provide various operating voltages to components such as the central processing unit (CPU) and graphics card (GPU) through DC-DC converters.

[0003] In traditional computer power supply voltage output control schemes, the control function is usually integrated within the DC-DC conversion module, employing a simple analog control method and lacking intelligent monitoring and protection functions. This scheme has the following drawbacks: First, it cannot achieve precise voltage regulation and dynamic control, making it difficult to meet the stringent power quality requirements of modern processors; second, it lacks a robust protection mechanism, resulting in slow response and unreliable protection in the event of abnormal conditions such as overvoltage or overcurrent; third, it cannot achieve real-time monitoring and communication of power status, hindering system-level power management.

[0004] In addition, in traditional solutions, the power supply for the control circuit is usually obtained directly from the power conversion section, which is easily affected by power switching noise, resulting in decreased control accuracy and reduced system reliability.

[0005] Therefore, in view of the problems of simple control function, poor reliability and weak anti-interference ability in the existing technology, there is an urgent need to develop a voltage control circuit for DC-DC conversion of computer power supply with general interface, computer power supply and electronic equipment. Summary of the Invention

[0006] To overcome the shortcomings and difficulties of the existing technology, the purpose of this utility model is to provide a voltage control circuit, computer power supply and electronic equipment for DC-DC conversion of computer power supplies with universal interfaces; so as to achieve a highly integrated and efficient multi-output integrated DC-DC voltage converter.

[0007] The first objective of this invention is to provide a voltage control circuit for DC-DC conversion in a computer power supply with a universal interface; the second objective of this invention is to provide a computer power supply; and the third objective of this invention is to provide an electronic device.

[0008] The primary objective of this invention is achieved as follows: the voltage control circuit includes a main control unit and a power supply management unit; The control signal output terminal of the main control unit is electrically connected to the control terminal of the DC-DC conversion module; the voltage output terminal of the power supply management unit is electrically connected to the power input terminal of the main control unit. The main control unit and the power supply management unit are integrated on the same printed circuit board.

[0009] Furthermore, the main control unit is provided with a sixth control circuit for controlling the DC-DC conversion voltage output; The sixth control circuit includes a microcontroller chip, a crystal oscillator circuit, and a memory circuit; the clock pin of the microcontroller chip is connected to the crystal oscillator circuit, and the communication pin is connected to the memory circuit.

[0010] Furthermore, the crystal oscillator circuit includes a first crystal oscillator and two matching capacitors; wherein the matching capacitors are the seventy-seventh capacitor and the seventy-eighth capacitor; The two ends of the first crystal oscillator are grounded through the seventy-seventh capacitor and the seventy-eighth capacitor, respectively, and are connected to the clock input pin of the microcontroller chip.

[0011] Furthermore, the memory circuit includes an EEPROM chip; the serial data line and serial clock line of the EEPROM chip are respectively connected to the corresponding communication pins of the microcontroller chip; wherein, the EEPROM chip is the fourth control chip.

[0012] Furthermore, the microcontroller chip is the twentieth control chip; the sixth pin of the twentieth control chip is connected to the third pin of the first crystal oscillator and one end of the seventy-seventh capacitor, respectively; the other end of the seventy-seventh capacitor is connected to the second pin of the first crystal oscillator, the fourth pin of the first crystal oscillator, one end of the seventy-eighth capacitor, and the ground terminal, respectively; the other end of the seventy-eighth capacitor is electrically connected to the fifth pin of the twentieth control chip and the first pin of the first crystal oscillator, respectively. The 26th pin of the 20th control chip is electrically connected to the first pin of the fourth control chip; the fifth pin of the fourth control chip is electrically connected to the second pin of the fourth control chip, one end of the 155th capacitor, and the ground terminal, respectively; the other end of the 155th capacitor is electrically connected to the fourth pin of the fourth control chip; and the third pin of the fourth control chip is electrically connected to the 27th pin of the 20th control chip.

[0013] Furthermore, the model number of the twentieth control chip is N32G430C8L7; The first crystal oscillator is model X32258MSB4SI; the fourth control chip is model AD24C02.

[0014] Furthermore, the power supply management unit is provided with a seventh control circuit for supplying power to the main control unit; The seventh control circuit includes a low-dropout linear regulator and a feedback network; The input terminal of the low dropout linear regulator is connected to a DC power supply, and the output terminal is electrically connected to the power input terminal of the main control unit. The feedback network is electrically connected between the output and feedback terminals of the low-dropout linear regulator.

[0015] Furthermore, the feedback network includes a first voltage divider resistor and a second voltage divider resistor; wherein the first voltage divider resistor is the 129th resistor; and the second voltage divider resistor is the 130th resistor; The first voltage divider resistor and the second voltage divider resistor are connected in series between the output terminal of the low dropout linear regulator and ground; the connection node of the two resistors is connected to the feedback terminal of the low dropout linear regulator.

[0016] Furthermore, the low-dropout linear regulator is a third control chip; The first pin of the third control chip is connected to one end of the 249th resistor, one end of the 70th capacitor, one end of the 143rd resistor, one end of the 72nd capacitor, the anode of the third voltage regulator, one end of the 158th resistor, one end of the 96th capacitor, one end of the 149th capacitor, one end of the 132nd resistor, one end of the 115th capacitor, and the ground terminal, respectively. The third pin of the third control chip is electrically connected to the other end of the seventieth capacitor and one end of the sixty-ninth capacitor, respectively; the other end of the sixty-ninth capacitor is electrically connected to the other end of the two hundred and forty-ninth resistor. The second pin of the third control chip is electrically connected to the power supply terminal, the other end of the seventy-second capacitor, one end of the one hundred and twenty-ninth resistor, the other end of the one hundred and fifteenth capacitor, and one end of the sixth inductor, respectively. The other end of the first 129 resistor is electrically connected to the cathode of the third voltage regulator, one end of the first 130 resistor, the other end of the ninety-sixth capacitor, and one end of the first 131 resistor, respectively. The other end of the first 130 resistor is electrically connected to the reference terminal of the third voltage regulator and the other end of the first 158 ​​resistor, respectively; the other end of the first 131 resistor is electrically connected to the other end of the first 149 capacitor and the other end of the first 132 resistor, respectively.

[0017] Furthermore, the third control chip is model AMS1117.

[0018] The second objective of this utility model is achieved as follows: the computer power supply includes a power supply motherboard and a voltage control circuit for DC-DC conversion applied to a computer power supply with a universal interface. The power supply board provides input power to the voltage control circuit.

[0019] The third objective of this invention is achieved as follows: the electronic device includes the computer power supply.

[0020] This invention utilizes a main control unit and a power management unit within the voltage control circuit. The control signal output of the main control unit is electrically connected to the control terminal of the DC-DC conversion module. The voltage output of the power management unit is electrically connected to the power input of the main control unit. The main control unit and the power management unit are integrated on the same printed circuit board. Along with corresponding computer power supplies and electronic devices, this invention solves the problems of simple control functions, poor reliability, and weak anti-interference capabilities in traditional solutions.

[0021] In other words, this utility model integrates the main control unit and the independent power management unit on a single circuit board, constructing an intelligent voltage control architecture with high anti-interference characteristics. It achieves precise voltage regulation, dynamic adjustment and millisecond-level fault protection for the DC-DC conversion module. At the same time, it completely isolates power noise through a dedicated power supply circuit, significantly improving the control accuracy, operational reliability and overall stability of the computer power system. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the 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. Figure 1 This is a schematic diagram of a traditional module board structure; Figure 2 This is a schematic diagram of the module structure of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 3 This is a schematic diagram of the PCB board structure of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 4 This is a schematic diagram of a voltage output control system architecture for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 5This is a schematic diagram of the first interface control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 6 This is a schematic diagram of the second interface control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 7 This is a schematic diagram of the third interface control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 8 This is a schematic diagram of the fourth interface control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 9 This is a schematic diagram of the fifth interface control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 10 This is a schematic diagram of the sixth interface control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 11 This is a schematic diagram of the seventh interface control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 12 This is a schematic diagram of the eighth interface control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 13 This is a schematic diagram of the first control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 14 This is a schematic diagram of the second control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 15 This is a schematic diagram of the third control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 16 This is a schematic diagram of the fourth control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 17 This is a schematic diagram of the fifth control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 18 This is a schematic diagram of the sixth control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 19 This is a schematic diagram of the seventh control circuit of a voltage output control system for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 20 This is a schematic flowchart of a voltage output control method for a computer power supply based on an integrated universal interface, according to an embodiment of this utility model. Figure 21 This is a schematic diagram of a computer power supply architecture according to an embodiment of the present invention; Figure 22 This is a schematic diagram of an electronic device architecture according to an embodiment of the present invention; Figure 23 This is a schematic diagram of a voltage control circuit architecture for DC-DC conversion in a computer power supply with a universal interface, according to this utility model. In the diagram: IC1 - First control chip; C18 - Eighteenth capacitor; R5 - Fifth resistor; M1 - First field-effect transistor; M2 - Second field-effect transistor; LA1 - First A inductor; D1 - First diode; R2 - Second resistor; LA2 - Second A inductor; R18 - Eighteenth resistor; C16 - Sixteenth capacitor; R1 - First resistor; C17 - Seventeenth capacitor; R77 - Seventy-seventh resistor; C19 - Nineteenth capacitor; R16 - Sixteenth resistor; M3 - Third field-effect transistor; M 4 - Fourth MOSFET; LB2 - Second B Inductor; D2 - Second Diode; LB3 - Third B Inductor; R31 - Thirty-first Resistor; C25 - Twenty-fifth Capacitor; R11 - Eleventh Resistor; C24 - Twenty-fourth Capacitor; R76 - Seventy-sixth Resistor; C23 - Twenty-third Capacitor; U20 - Twentieth Control Chip; X1 - First Crystal Oscillator; C77 - Seventy-seventh Capacitor; C78 - Seventy-eighth Capacitor; U4 - Fourth Control Chip; C155 - One Hundred and Fifty-fifth Capacitor; U3 - Third control chip; R249 - 249th resistor; C70 - 70th capacitor; R143 - 143rd resistor; C72 - 72nd capacitor; IC3 - Third voltage regulator; R158 - 158th resistor; C96 - 96th capacitor; C149 - 149th capacitor; R132 - 132nd resistor; C115 - 115th capacitor; C69 - 69th capacitor; R129 - 129th resistor; L6 - 6th inductor; R130 - 130th resistor; R131 - 131st resistor; Q2 - Q2nd MOSFET; C30 - 30th capacitor; R36 - 36th resistor; C33 - 33rd capacitor; R30 - 30th resistor. Detailed Implementation

[0023] To facilitate a clearer understanding of the purpose, technical solution, and advantages of this utility model, the following description, in conjunction with the accompanying drawings and specific embodiments, will further illustrate this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0024] This utility model can also be implemented or applied through other different specific examples. The details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Secondly, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figure 23 As shown, a voltage control circuit for DC-DC conversion in a computer power supply with a universal interface is provided. The voltage control circuit includes a main control unit and a power supply management unit. The control signal output terminal of the main control unit is electrically connected to the control terminal of the DC-DC conversion module; the voltage output terminal of the power supply management unit is electrically connected to the power input terminal of the main control unit. The main control unit and the power supply management unit are integrated on the same printed circuit board.

[0029] The main control unit is equipped with a sixth control circuit for controlling the DC-DC conversion voltage output; The sixth control circuit includes a microcontroller chip, a crystal oscillator circuit, and a memory circuit; the clock pin of the microcontroller chip is connected to the crystal oscillator circuit, and the communication pin is connected to the memory circuit.

[0030] The crystal oscillator circuit includes a first crystal oscillator and two matching capacitors; wherein the matching capacitors are the seventy-seventh capacitor and the seventy-eighth capacitor; The two ends of the first crystal oscillator are grounded through the seventy-seventh capacitor and the seventy-eighth capacitor, respectively, and are connected to the clock input pin of the microcontroller chip.

[0031] The memory circuit includes an EEPROM chip; the serial data line and serial clock line of the EEPROM chip are respectively connected to the corresponding communication pins of the microcontroller chip; wherein, the EEPROM chip is the fourth control chip.

[0032] The microcontroller chip is the twentieth control chip; the sixth pin of the twentieth control chip is connected to the third pin of the first crystal oscillator and one end of the seventy-seventh capacitor; the other end of the seventy-seventh capacitor is connected to the second pin of the first crystal oscillator, the fourth pin of the first crystal oscillator, one end of the seventy-eighth capacitor, and the ground terminal; the other end of the seventy-eighth capacitor is electrically connected to the fifth pin of the twentieth control chip and the first pin of the first crystal oscillator. The 26th pin of the 20th control chip is electrically connected to the first pin of the fourth control chip; the fifth pin of the fourth control chip is electrically connected to the second pin of the fourth control chip, one end of the 155th capacitor, and the ground terminal, respectively; the other end of the 155th capacitor is electrically connected to the fourth pin of the fourth control chip; and the third pin of the fourth control chip is electrically connected to the 27th pin of the 20th control chip.

[0033] The twentieth control chip is model N32G430C8L7; the first crystal oscillator is model X32258MSB4SI; and the fourth control chip is model AD24C02.

[0034] The power supply management unit is equipped with a seventh control circuit for supplying power to the main control unit; The seventh control circuit includes a low-dropout linear regulator and a feedback network; The input terminal of the low dropout linear regulator is connected to a DC power supply, and the output terminal is electrically connected to the power input terminal of the main control unit. The feedback network is electrically connected between the output and feedback terminals of the low-dropout linear regulator.

[0035] The feedback network includes a first voltage divider resistor and a second voltage divider resistor; wherein the first voltage divider resistor is the 129th resistor; and the second voltage divider resistor is the 130th resistor; The first voltage divider resistor and the second voltage divider resistor are connected in series between the output terminal of the low dropout linear regulator and ground; the connection node of the two resistors is connected to the feedback terminal of the low dropout linear regulator.

[0036] The low-dropout linear regulator is a third control chip; The first pin of the third control chip is connected to one end of the 249th resistor, one end of the 70th capacitor, one end of the 143rd resistor, one end of the 72nd capacitor, the anode of the third voltage regulator, one end of the 158th resistor, one end of the 96th capacitor, one end of the 149th capacitor, one end of the 132nd resistor, one end of the 115th capacitor, and the ground terminal, respectively. The third pin of the third control chip is electrically connected to the other end of the seventieth capacitor and one end of the sixty-ninth capacitor, respectively; the other end of the sixty-ninth capacitor is electrically connected to the other end of the two hundred and forty-ninth resistor. The second pin of the third control chip is electrically connected to the power supply terminal, the other end of the seventy-second capacitor, one end of the one hundred and twenty-ninth resistor, the other end of the one hundred and fifteenth capacitor, and one end of the sixth inductor, respectively. The other end of the first 129 resistor is electrically connected to the cathode of the third voltage regulator, one end of the first 130 resistor, the other end of the ninety-sixth capacitor, and one end of the first 131 resistor, respectively. The other end of the first 130 resistor is electrically connected to the reference terminal of the third voltage regulator and the other end of the first 158 ​​resistor, respectively; the other end of the first 131 resistor is electrically connected to the other end of the first 149 capacitor and the other end of the first 132 resistor, respectively.

[0037] The third control chip is model AMS1117.

[0038] Specifically, in a specific embodiment of the present utility model, such as Figure 23 As shown, this utility model provides a voltage control circuit for a computer DC-DC converter, mainly comprising two parts: a main control unit and a power supply management unit. The main control unit is responsible for intelligent control of the DC-DC voltage conversion module, while the power supply management unit is responsible for providing a stable and reliable power supply to the main control unit.

[0039] like Figure 18As shown, the main control unit includes a microcontroller chip U20, a crystal oscillator circuit, and a memory circuit. The microcontroller chip U20 is an N32G430C8L7, which features rich peripheral interfaces and powerful processing capabilities. The crystal oscillator circuit consists of crystal oscillator X1 (the first crystal oscillator), capacitors seventy-seven and seventy-eight, providing a precise clock signal to the microcontroller. The memory circuit uses an EEPROM chip U4, model AD24C02, to store system configuration parameters and operating data.

[0040] In the actual connection, pin 3 of crystal oscillator X1 is grounded through capacitor 77, and pin 1 is grounded through capacitor 78. These two pins of the crystal oscillator are respectively connected to the clock input pin of microcontroller U20. The serial data line SDA and serial clock line SCL of EEPROM chip U4 are respectively connected to the corresponding communication pins of microcontroller U20 to realize data read and write operations.

[0041] like Figure 19 As shown, the power management unit includes a low-dropout linear regulator U3 and a feedback network. The low-dropout linear regulator U3 uses an AMS1117 chip, whose input is connected to a +5V DC power supply from the main power supply board, and whose output generates a stable +3.3V voltage to power the main control unit. The feedback network consists of resistors 129 and 130, which are connected in series between the regulator's output and ground. Their connection point is connected to the regulator's feedback terminal. By adjusting the resistance ratio of the two resistors, the output voltage value can be precisely set.

[0042] In practical applications, resistor R129 has a resistance of 129 ohms, and resistor R130 has a resistance of 130 ohms. This configuration provides a precise +3.3V output voltage. Additionally, appropriate filter capacitors, such as capacitor 115 and capacitor 96, are configured at the input and output terminals of the regulator to further filter out power supply noise and improve power quality.

[0043] The working principle of this invention is as follows: The power supply management unit first converts the +5V voltage provided by the power supply motherboard into a clean and stable +3.3V voltage to provide operating power to the main control unit. After power-on, the main control unit reads the configuration parameters from the memory, initializes the system, and then begins to monitor and control the DC-DC voltage conversion module. The main control unit sends control commands to the DC-DC conversion module through its control signal output terminal to precisely adjust the output voltage, while simultaneously monitoring the system's operating status in real time. Once an abnormality is detected, corresponding protective measures are immediately taken.

[0044] Through the above embodiments, this utility model realizes intelligent control of the voltage output of the computer DC-DC converter, which greatly improves the reliability, stability and intelligence level of the power supply system.

[0045] In another embodiment of this solution, such as Figure 2-19 As shown, this utility model provides a voltage output control system for a computer power supply based on an integrated universal interface. The system includes an integrated printed circuit board; a DC-DC voltage conversion module disposed on the integrated printed circuit board for converting the input voltage provided by the power supply motherboard into the operating voltage required by at least one device; and a universal output interface module disposed on the integrated printed circuit board and electrically connected to the DC-DC voltage conversion module for outputting the operating voltage to the outside. The DC-DC voltage conversion module and the general output interface module are integrated on the same integrated printed circuit board, forming an integrated voltage output control module board.

[0046] The general-purpose output interface module includes multiple physically independent output ports for connecting different internal computer devices; The multiple physically independent output ports include, but are not limited to, a CPU 8-pin port for powering the central processing unit, a PCI-E 8-pin port for powering the graphics card, and a SATA power port for powering peripheral devices.

[0047] The general-purpose output interface module is provided with multiple general-purpose interface control circuits that are electrically connected to the DC-DC voltage conversion module; The general interface control circuit includes a first interface control circuit, a second interface control circuit, a third interface control circuit, a fourth interface control circuit, a fifth interface control circuit, a sixth interface control circuit, a seventh interface control circuit, and an eighth interface control circuit.

[0048] The general-purpose output interface module is further provided with a first control circuit and a second control circuit for controlling and reducing voltage ripple; the first control circuit and the second control circuit are provided with multiple filter capacitors; the filter capacitors are filter capacitors for controlling the output voltage; a third control circuit for controlling the connection to the graphics card power supply, the third control circuit being the ATX3.0 interface of the graphics card power supply socket; and a fourth control circuit for controlling the electrical connection of the PCB board interface, the fourth control circuit being the PCB board interface for soldering to the main board.

[0049] The DC-DC voltage conversion module is provided with a fifth control circuit for controlling DC-DC voltage conversion; the fifth control circuit is provided with a first control chip; the sixth pin of the first control chip is connected to one end of the eighteenth capacitor; the other end of the eighteenth capacitor is electrically connected to the eighth pin of the first control chip, one end of the fifth resistor, one side of the first field-effect transistor, one side of the second field-effect transistor, one end of the first A inductor, and the negative terminal of the first diode. The other end of the first A inductor is electrically connected to one end of the second resistor, one end of the second A inductor, one end of the eighteenth resistor, and the positive terminal of the sixteenth capacitor, respectively. The other end of the second A inductor is electrically connected to one end of the first resistor, the positive terminal of the seventeenth capacitor, one end of the seventy-seventh resistor, and the circuit in the general output interface module, respectively. The fifteenth pin of the first control chip is connected to one end of the nineteenth capacitor; the other end of the nineteenth capacitor is electrically connected to the thirteenth pin of the first control chip, one end of the sixteenth resistor, one side of the third field-effect transistor, one side of the fourth field-effect transistor, one end of the second B inductor, and the negative terminal of the second diode. The other end of the second B inductor is electrically connected to one end of the ninth resistor, one end of the third B inductor, one end of the thirty-first resistor, and the positive terminal of the twenty-fifth capacitor, respectively. The other end of the third B inductor is electrically connected to one end of the eleventh resistor, the positive terminal of the twenty-fourth capacitor, one end of the seventy-sixth resistor, one end of the twenty-third capacitor, and the circuit in the general output interface module.

[0050] The first control chip is model APW7159C; the first field-effect transistor, the second field-effect transistor, the third field-effect transistor and the fourth field-effect transistor are all model NTMFS4C022NT1G.

[0051] The system also includes a sixth control circuit for controlling the voltage output of the DC-DC voltage conversion module, and a seventh control circuit electrically connected to the sixth control circuit and used to power the twentieth control chip in the sixth control circuit. The sixth pin of the twentieth control chip is connected to the third pin of the first crystal oscillator and one end of the seventy-seventh capacitor, respectively; the other end of the seventy-seventh capacitor is connected to the second pin of the first crystal oscillator, the fourth pin of the first crystal oscillator, one end of the seventy-eighth capacitor, and the ground terminal, respectively; the other end of the seventy-eighth capacitor is electrically connected to the fifth pin of the twentieth control chip and the first pin of the first crystal oscillator, respectively. The 26th pin of the 20th control chip is electrically connected to the first pin of the fourth control chip; the fifth pin of the fourth control chip is electrically connected to the second pin of the fourth control chip, one end of the 155th capacitor, and the ground terminal, respectively; the other end of the 155th capacitor is electrically connected to the fourth pin of the fourth control chip; and the third pin of the fourth control chip is electrically connected to the 27th pin of the 20th control chip.

[0052] The twentieth control chip is model N32G430C8L7; the first crystal oscillator is model X32258MSB4SI; and the fourth control chip is model AD24C02.

[0053] The seventh control circuit is equipped with a third control chip; the first pin of the third control chip is connected to one end of the 249th resistor, one end of the 70th capacitor, one end of the 143rd resistor, one end of the 72nd capacitor, the anode of the third voltage regulator, one end of the 158th resistor, one end of the 96th capacitor, one end of the 149th capacitor, one end of the 132nd resistor, one end of the 115th capacitor, and the ground terminal. The third pin of the third control chip is electrically connected to the other end of the seventieth capacitor and one end of the sixty-ninth capacitor, respectively; the other end of the sixty-ninth capacitor is electrically connected to the other end of the two hundred and forty-ninth resistor. The second pin of the third control chip is electrically connected to the power supply terminal, the other end of the seventy-second capacitor, one end of the one hundred and twenty-ninth resistor, the other end of the one hundred and fifteenth capacitor, and one end of the sixth inductor, respectively. The other end of the first 129 resistor is electrically connected to the cathode of the third voltage regulator, one end of the first 130 resistor, the other end of the ninety-sixth capacitor, and one end of the first 131 resistor, respectively. The other end of the first 130 resistor is electrically connected to the reference terminal of the third voltage regulator and the other end of the first 158 ​​resistor, respectively; the other end of the first 131 resistor is electrically connected to the other end of the first 149 capacitor and the other end of the first 132 resistor, respectively.

[0054] The third control chip is model AMS1117.

[0055] The system also includes an input interface disposed on the integrated printed circuit board for direct connection to the computer power supply motherboard via a cable or connector to receive the input voltage.

[0056] Specifically, in a specific embodiment of this utility model, a basic architecture for a voltage output control system for a computer power supply based on an integrated universal interface is provided. The core of the system is an integrated printed circuit board (PCB), the material of which can be a common FR-4 epoxy glass cloth laminate to meet the requirements of insulation, strength, and cost.

[0057] The integrated PCB1 mainly integrates three functional areas, including an input interface area, which is equipped with input interfaces. These interfaces are preferably multi-pin connectors, such as the Molex Mini-Fit Jr. series, for direct connection to corresponding ports on the computer power supply motherboard via a standardized cable. The input interfaces are primarily used to receive unadjusted DC input voltage from the power supply motherboard, typically +12V.

[0058] The voltage conversion area includes a DC-DC voltage conversion module. This module is soldered to an integrated PCB using SMT (Surface Mount Technology), with its circuit layout close to the input interface to minimize input path impedance. The core of the DC-DC voltage conversion module can be an integrated power management IC (PMIC), such as Infineon's IR35201, or a buck converter topology composed of discrete components, including but not limited to MOSFET switches, high-frequency inductors, filter capacitors, and PWM control chips. Its function is to efficiently convert the input +12V voltage into one or more stable low-voltage DC currents.

[0059] The output interface area is equipped with a universal output interface module. This module is directly and electrically connected to the output of the DC-DC voltage conversion module via copper traces within the integrated PCB. The universal output interface module includes multiple physically independent, industry-standard output ports that can be arranged along the PCB edge for easy insertion and removal. In this embodiment, it includes a CPU 8-pin port: its pin definitions conform to the ATX standard, used to provide core power to the central processing unit (e.g., +1.2V Vcore voltage converted from +12V); a PCI-E 8-pin port, its pin definitions conform to the PCI-SIG standard, used to provide power to the graphics card (e.g., direct +12V output, or a dedicated graphics card power supply provided by the DC-DC module); and a SATA power port, its pin definitions conform to the SATA-IO standard, used to provide +5V, +12V, and +3.3V voltages to storage devices such as hard drives and optical drives.

[0060] In this embodiment, the +12V DC power generated by the power supply motherboard enters the system through cables and input interfaces. The DC-DC voltage conversion module immediately starts and performs high-frequency switching conversion, converting the +12V input into the precise voltage required by the load. For example, the PWM controller drives the MOSFET, and through energy storage and filtering by inductors and capacitors, a stable CPU core voltage is obtained. The converted power is then delivered directly and with low loss to the corresponding universal output interface through carefully designed shortest and widest copper traces on the integrated PCB. When the user plugs the power cord of devices such as the CPU and graphics card into the corresponding port, the device can obtain an efficient, clean, and stable power supply.

[0061] In another embodiment of the present invention, a preferred embodiment supports multiple independent outputs. Based on the above embodiments, this embodiment further refines the function of the DC-DC voltage conversion module to demonstrate its flexibility.

[0062] In this embodiment, the DC-DC voltage conversion module is configured as a multi-phase, multi-output system. For the high current (e.g., exceeding 100A) required by the CPU 8-pin port, the DC-DC module can employ a multi-phase parallel buck circuit. For example, a four-phase controller drives four identical sets of MOSFETs, inductors, and capacitors, which operate alternately to power the CPU load. This not only significantly improves the current output capability but also effectively smooths the output ripple, enhancing power quality. This circuitry can be placed on the integrated PCB 1 near the CPU port.

[0063] Meanwhile, the DC-DC module can integrate another set of independent buck converters specifically designed to generate +5V and +3.3V voltages and output them through the SATA power port. This means that a single DC-DC module on an integrated PCB (from a system perspective) can simultaneously generate and manage multiple operating voltages of different specifications (such as +1.2V, +5V, +3.3V) and route them to different dedicated interfaces.

[0064] This more integrated design further confirms the advantages of the "two-in-one" concept of this utility model: the multi-channel voltage generation and distribution functions that originally required multiple independent small boards are perfectly integrated into a single module board, resulting in a more significant reduction in structural complexity and improvement in efficiency.

[0065] As can be seen from the above embodiments, the integrated solution proposed by this utility model minimizes the physical distance and electrical path between the voltage conversion point and the power output point compared with traditional technologies, fundamentally reducing transmission loss. Moreover, it is fully compatible with the existing computer ecosystem, and users do not need to change their usage habits. In addition, the integrated module board can be designed, tested and produced as an independent and replaceable component, which facilitates quality control and reuse in multiple power supply products, and accelerates the product development cycle.

[0066] In the above system embodiment, the innovative design of integrating the DC-DC voltage conversion module and the general-purpose output interface module onto the same PCB board achieves a structural revolution in the computer power supply voltage output system. This integrated architecture effectively eliminates intermediate connection links found in traditional discrete structures, significantly shortening the power transmission path. This simplifies manufacturing processes, reduces production costs, and substantially improves the overall conversion efficiency and system reliability of the power supply.

[0067] To achieve the purpose of this utility model, such as Figure 20 As shown, a voltage output control method for a computer power supply based on an integrated universal interface is also provided. This method is used to implement the aforementioned voltage output control system for a computer power supply based on an integrated universal interface. The method includes the following steps: The DC-DC voltage conversion module, integrated on a single printed circuit board, receives the input voltage from the power supply motherboard and converts it. The converted operating voltage is directly output to the computer load through a universal output interface module integrated on the same printed circuit board.

[0068] The DC-DC voltage conversion function and voltage output interface function are integrated on the same integrated printed circuit board, eliminating the need for a separate electrical connection medium between the DC-DC conversion board and the power supply main board.

[0069] To achieve the purpose of this utility model, such as Figure 21 As shown, a computer power supply is also provided, which includes a power supply motherboard and a voltage output control system for a computer power supply based on an integrated universal interface. The power supply motherboard is electrically connected to the input interface of the voltage output control system.

[0070] Based on the above embodiments, in another embodiment of this solution, the voltage control circuit of this utility model is applied to the system architecture of a computer power supply. The power supply motherboard provides the raw DC voltage, which is intelligently controlled by the voltage control circuit of this utility model to convert the DC-DC voltage to a DC-DC voltage, and finally provides a stable and reliable operating voltage to various components of the computer through the output interface.

[0071] To achieve the purpose of this utility model, such as Figure 22 As shown, an electronic device is also provided, which includes the aforementioned computer power supply.

[0072] This invention utilizes a main control unit and a power management unit within the voltage control circuit. The control signal output of the main control unit is electrically connected to the control terminal of the DC-DC conversion module. The voltage output of the power management unit is electrically connected to the power input of the main control unit. The main control unit and the power management unit are integrated on the same printed circuit board. Along with corresponding computer power supplies and electronic devices, this invention solves the problems of simple control functions, poor reliability, and weak anti-interference capabilities in traditional solutions.

[0073] In other words, this utility model integrates the main control unit and the independent power management unit on a single circuit board, constructing an intelligent voltage control architecture with high anti-interference characteristics. It achieves precise voltage regulation, dynamic adjustment and millisecond-level fault protection for the DC-DC conversion module. At the same time, it completely isolates power noise through a dedicated power supply circuit, significantly improving the control accuracy, operational reliability and overall stability of the computer power system.

[0074] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A voltage control circuit for DC-DC conversion in a computer power supply with a universal interface, characterized in that, The voltage control circuit includes a main control unit and a power supply management unit; The control signal output terminal of the main control unit is electrically connected to the control terminal of the DC-DC conversion module; the voltage output terminal of the power supply management unit is electrically connected to the power input terminal of the main control unit. The main control unit and the power supply management unit are integrated on the same printed circuit board.

2. The voltage control circuit for DC-DC conversion in a computer power supply with a universal interface according to claim 1, characterized in that, The main control unit is equipped with a sixth control circuit for controlling the DC-DC conversion voltage output; The sixth control circuit includes a microcontroller chip, a crystal oscillator circuit, and a memory circuit; the clock pin of the microcontroller chip is connected to the crystal oscillator circuit, and the communication pin is connected to the memory circuit.

3. The voltage control circuit for DC-DC conversion in a computer power supply with a universal interface according to claim 2, characterized in that, The crystal oscillator circuit includes a first crystal oscillator and two matching capacitors; wherein the matching capacitors are the seventy-seventh capacitor and the seventy-eighth capacitor; The two ends of the first crystal oscillator are grounded through the seventy-seventh capacitor and the seventy-eighth capacitor, respectively, and are connected to the clock input pin of the microcontroller chip.

4. The voltage control circuit for DC-DC conversion in a computer power supply with a universal interface according to claim 2, characterized in that, The memory circuit includes an EEPROM chip; the serial data line and serial clock line of the EEPROM chip are respectively connected to the corresponding communication pins of the microcontroller chip; wherein, the EEPROM chip is the fourth control chip.

5. A voltage control circuit for DC-DC conversion in a computer power supply with a universal interface, as described in claim 2, 3, or 4, characterized in that, The microcontroller chip is the twentieth control chip; the sixth pin of the twentieth control chip is connected to the third pin of the first crystal oscillator and one end of the seventy-seventh capacitor; the other end of the seventy-seventh capacitor is connected to the second pin of the first crystal oscillator, the fourth pin of the first crystal oscillator, one end of the seventy-eighth capacitor, and the ground terminal; the other end of the seventy-eighth capacitor is electrically connected to the fifth pin of the twentieth control chip and the first pin of the first crystal oscillator. The 26th pin of the 20th control chip is electrically connected to the first pin of the fourth control chip; the fifth pin of the fourth control chip is electrically connected to the second pin of the fourth control chip, one end of the 155th capacitor, and the ground terminal, respectively; the other end of the 155th capacitor is electrically connected to the fourth pin of the fourth control chip; and the third pin of the fourth control chip is electrically connected to the 27th pin of the 20th control chip.

6. The voltage control circuit for DC-DC conversion in a computer power supply with a universal interface according to claim 1, characterized in that, The power supply management unit is equipped with a seventh control circuit for supplying power to the main control unit; The seventh control circuit includes a low-dropout linear regulator and a feedback network; The input terminal of the low dropout linear regulator is connected to a DC power supply, and the output terminal is electrically connected to the power input terminal of the main control unit. The feedback network is electrically connected between the output and feedback terminals of the low-dropout linear regulator.

7. The voltage control circuit for DC-DC conversion in a computer power supply with a universal interface according to claim 6, characterized in that, The feedback network includes a first voltage divider resistor and a second voltage divider resistor; wherein the first voltage divider resistor is the 129th resistor; and the second voltage divider resistor is the 130th resistor; The first voltage divider resistor and the second voltage divider resistor are connected in series between the output terminal of the low dropout linear regulator and ground; the connection node of the two resistors is connected to the feedback terminal of the low dropout linear regulator.

8. A voltage control circuit for DC-DC conversion in a computer power supply with a universal interface, as described in claim 6 or 7, characterized in that, The low-dropout linear regulator is a third control chip; The first pin of the third control chip is connected to one end of the 249th resistor, one end of the 70th capacitor, one end of the 143rd resistor, one end of the 72nd capacitor, the anode of the third voltage regulator, one end of the 158th resistor, one end of the 96th capacitor, one end of the 149th capacitor, one end of the 132nd resistor, one end of the 115th capacitor, and the ground terminal, respectively. The third pin of the third control chip is electrically connected to the other end of the seventieth capacitor and one end of the sixty-ninth capacitor, respectively; the other end of the sixty-ninth capacitor is electrically connected to the other end of the two hundred and forty-ninth resistor. The second pin of the third control chip is electrically connected to the power supply terminal, the other end of the seventy-second capacitor, one end of the one hundred and twenty-ninth resistor, the other end of the one hundred and fifteenth capacitor, and one end of the sixth inductor, respectively. The other end of the first 129 resistor is electrically connected to the cathode of the third voltage regulator, one end of the first 130 resistor, the other end of the ninety-sixth capacitor, and one end of the first 131 resistor, respectively. The other end of the first 130 resistor is electrically connected to the reference terminal of the third voltage regulator and the other end of the first 158 ​​resistor, respectively; the other end of the first 131 resistor is electrically connected to the other end of the first 149 capacitor and the other end of the first 132 resistor, respectively.

9. A computer power supply, characterized in that, The computer power supply includes a power supply motherboard and a voltage control circuit as described in any one of claims 1 to 8; The power supply board provides input power to the voltage control circuit.

10. An electronic device, characterized in that, The electronic device includes the computer power supply as described in claim 9.

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