A multi-range controlled direct current power supply circuit

Abstract

This invention discloses a multi-channel controlled DC power supply circuit, comprising: a first-channel regulated power supply unit, a second-channel regulated power supply unit, a third-channel regulated power supply unit, a fourth-channel regulated power supply unit, a fifth-channel regulated power supply unit, a sixth-channel regulated power supply unit, a seventh-channel regulated power supply unit, an eighth-channel regulated power supply unit, a ninth-channel regulated power supply unit, and a tenth-channel regulated power supply unit, or any combination thereof; the first-channel regulated power supply unit supplies power to the second, third, fourth, and fifth-channel regulated power supply units; the third-channel regulated power supply unit supplies power to the sixth-channel regulated power supply unit; the seventh-channel regulated power supply unit supplies power to the eighth-channel regulated power supply unit; and the tenth-channel regulated power supply unit supplies power to the ninth-channel regulated power supply unit. This invention can stably convert the input voltage into the operating voltage required by the module, ensuring stable system operation.

Description

Technical Field

[0001] This utility model relates to the field of power supply equipment technology, specifically to a multi-path controllable DC power supply circuit. Background Technology

[0002] With the increasing sophistication of electronic devices, programmable DC power supplies, as core power supply units, are increasingly widely used in fields such as industrial control, medical equipment, and communication base stations. Traditional programmable power supplies mainly use linear regulation technology, which uses series power transistors to adjust the voltage. However, this technology suffers from problems such as low efficiency, high heat generation, and bulky size, making it difficult to meet the demands. Utility Model Content

[0003] This utility model aims to at least solve the technical problems existing in the prior art, and in particular, innovatively proposes a power supply circuit for multi-path controlled DC power supplies.

[0004] To achieve the above-mentioned objectives of this utility model, this utility model provides a multi-path controlled DC power supply circuit, comprising: One or any combination of the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th and 10th voltage regulator units; The voltage output terminal of the first regulated power supply unit is connected to the voltage input terminals of the second, third, fourth, and fifth regulated power supply units. The voltage output terminal of the third regulated power supply unit is connected to the voltage input terminal of the sixth regulated power supply unit; The voltage output terminal of the 7th regulated power supply unit is connected to the voltage input terminal of the 8th regulated power supply unit; The voltage output terminal of the 10th regulated power supply unit is connected to the voltage input terminal of the 9th regulated power supply unit; In a preferred embodiment of this utility model, the first voltage regulator unit includes: a 5V power supply VCC_5V_IN connected to the first terminal of fuse F1, and the second terminal of fuse F1 connected to the negative terminal of diode D1, the first terminal of capacitor C42, the first terminal of capacitor C43 and the first terminal of capacitor C44 and outputting a 5V power supply VCC5V0_SYS. The positive terminal of diode D1 is grounded, the second terminal of capacitor C42 is grounded, the second terminal of capacitor C43 is grounded, and the second terminal of capacitor C44 is grounded. In a preferred embodiment of this utility model, the second voltage regulator unit includes: a 5V power supply VCC5V0_SYS connected to the first end of resistor R38, the first end of capacitor C45, the first end of capacitor C46, ​​the power input terminal VIN1 of voltage regulator U4, and the power input terminal VIN2 of voltage regulator U4. The second terminal of capacitor C45 is grounded, and the second terminal of capacitor C46 is grounded. The second terminal of resistor R38 is connected to the first terminal of capacitor C47 and the enable terminal EN of voltage regulator U4; The power status indicator terminal PG of voltage regulator U4 is connected to the first terminal of resistor R53, and the second terminal of resistor R53 is connected to the second terminal of resistor R41. The second terminal of capacitor C47 is grounded; The power output terminal VOUT1 of voltage regulator U4 is connected to the power output terminal VOUT2 of voltage regulator U4, the first terminal of capacitor C48, the first terminal of capacitor C49 and the first terminal of capacitor C50, and outputs a 0.9V power supply VDD_0V9. The second terminal of capacitor C48 is grounded, the second terminal of capacitor C49 is grounded, and the second terminal of capacitor C50 is grounded. The output voltage fine-tuning terminal VOS of voltage regulator U4 is connected to the first terminal of resistor R39; The second end of resistor R39 is connected to the feedback terminals FB1 and FB2 of voltage regulator U4 and the first end of resistor R40; The second end of resistor R40 is connected to the grounding terminal GND2 and grounding terminal GND1 of voltage regulator U4 and then grounded. In a preferred embodiment of this utility model, the third voltage regulator unit includes: a 5V power supply VCC5V0_SYS connected to the first end of resistor R54, the first end of capacitor C66, the first end of capacitor C67, the power input terminal VIN1 of voltage regulator U8, and the power input terminal VIN2 of voltage regulator U8. The second terminal of capacitor C66 is grounded, and the second terminal of capacitor C67 is grounded. The second terminal of resistor R54 is connected to the first terminal of capacitor C68 and the enable terminal EN of voltage regulator U8; The second terminal of capacitor C68 is grounded; The power output terminal VOUT1 of voltage regulator U8 is connected to the power output terminal VOUT2 of voltage regulator U8, the first terminal of capacitor C69, the first terminal of capacitor C70, and the first terminal of capacitor C71, and outputs a 3.3V power supply VCC_3V3. The second terminal of capacitor C69 is grounded, the second terminal of capacitor C70 is grounded, and the second terminal of capacitor C71 is grounded. The output voltage fine-tuning terminal VOS of voltage regulator U8 is connected to the first terminal of resistor R55. The second end of resistor R55 is connected to the feedback terminals FB1 and FB2 of voltage regulator U8 and the first end of resistor R58. The second end of resistor R58 is connected to the grounding terminal GND2 and grounding terminal GND1 of voltage regulator U8 and then grounded. In a preferred embodiment of this utility model, the fourth voltage regulator unit includes: a 5V power supply VCC5V0_SYS connected to the first end of resistor R44, the first end of capacitor C57, the first end of capacitor C58, the power input terminal VIN1 of voltage regulator U6, and the power input terminal VIN2 of voltage regulator U6. The second terminal of capacitor C57 is grounded, and the second terminal of capacitor C58 is grounded. The second terminal of resistor R44 is connected to the first terminal of capacitor C59 and the enable terminal EN of voltage regulator U6, and the second terminal of capacitor C59 is grounded. The power status indicator terminal PG of voltage regulator U6 is connected to the first terminal of resistor R56, and the second terminal of resistor R56 is connected to the second terminal of resistor R41. The power output terminal VOUT1 of voltage regulator U6 is connected to the power output terminal VOUT2 of voltage regulator U6, the first terminal of capacitor C60, the first terminal of capacitor C61, the first terminal of capacitor C62, and outputs the CPU power supply VDD_CPU. The second terminal of capacitor C60 is grounded, the second terminal of capacitor C61 is grounded, and the second terminal of capacitor C62 is grounded. The output voltage fine-tuning terminal VOS of voltage regulator U6 is connected to the first terminal of resistor R45. The second terminal of resistor R45 is connected to the first terminal of resistor R46, the feedback terminal FB1 of voltage regulator U6, the feedback terminal FB2 of voltage regulator U6, and the first terminal of resistor R51. The second end of resistor R46 is connected to the grounding terminals GND2 and GND1 of voltage regulator U6 and then grounded. The second terminal of resistor R51 is connected to the first terminal of capacitor C65, the first terminal of resistor R52, and the first terminal of resistor R50. The second terminal of capacitor C65 is grounded, and the second terminal of resistor R52 is grounded. The second end of resistor R50 is connected to the first end of resistor R48 and the PWM signal output terminal of the main control processor. The second end of resistor R48 is connected to the 3.3V power supply VCC_3V3. In a preferred embodiment of this utility model, the fifth voltage regulator unit includes: a 5V power supply VCC5V0_SYS connected to the first end of resistor R41, the first end of capacitor C51, the first end of capacitor C52, the power input terminal VIN1 of voltage regulator U5, and the power input terminal VIN2 of voltage regulator U5. The second terminal of capacitor C51 is grounded, and the second terminal of capacitor C52 is grounded. The second terminal of resistor R41 is connected to the first terminal of capacitor C53 and the enable terminal EN of voltage regulator U5; The second terminal of capacitor C53 is grounded; The power status indicator terminal PG of voltage regulator U5 is connected to the first terminal of resistor R57, and the second terminal of resistor R57 is connected to the second terminal of resistor R54. The power output terminal VOUT1 of voltage regulator U5 is connected to the power output terminal VOUT2 of voltage regulator U5, the first terminal of capacitor C54, the first terminal of capacitor C55, and the first terminal of capacitor C56, and outputs DDR power VCC_DDR. The second terminal of capacitor C54 is grounded, the second terminal of capacitor C55 is grounded, and the second terminal of capacitor C56 is grounded. The output voltage fine-tuning terminal VOS of voltage regulator U5 is connected to the first terminal of resistor R42; The second end of resistor R42 is connected to the feedback terminals FB1 and FB2 of voltage regulator U5 and the first end of resistor R43; The second end of resistor R43 is connected to the grounding terminal GND2 and grounding terminal GND1 of voltage regulator U5 and then grounded. In a preferred embodiment of this utility model, the sixth voltage regulator unit includes: a 3.3V power supply VCC_3V3 connected to the first end of capacitor C63 and the power input terminal VIN of voltage regulator U7, and the second end of capacitor C63 grounded. The voltage regulator U7's voltage adjustment terminal GND / ADJ is connected to the first terminal of resistor R49 and the first terminal of resistor R47; The second terminal of resistor R49 is grounded. The second terminal of resistor R47 is connected to the first terminal of capacitor C64, the power output terminal VOUT2 of voltage regulator U7, and the power output terminal VOUT1 of voltage regulator U7, and outputs a 1.8V power supply VCC_1V8. The second terminal of capacitor C64 is grounded; In a preferred embodiment of this utility model, the 7th voltage regulator unit includes: the voltage input terminal VIN of the DC-DC converter chip U61 connected to the first terminal of resistor R16, the first terminal of capacitor C69, and a 25V power supply; The control terminal CTRL of the DC-DC converter chip U61 is connected to the second terminal of resistor R16. The ground terminal GND of DC-DC converter chip U61 is connected to the second terminal of capacitor C69 and grounded. The positive voltage output terminal VO+ of the DC-DC converter chip U61 is connected to the first terminal of capacitor C21 and the first terminal of capacitor C72, and outputs a 12V power supply VCC12V. The first terminal of the TRIM trimmer of the DC-DC converter chip U61 is connected to the first terminal of the resistor R18. The negative voltage output terminal VO of DC-DC converter chip U61 is connected to the second terminal of resistor R18, the second terminal of capacitor C21 and the second terminal of capacitor C72, and then grounded. In a preferred embodiment of this utility model, the 8th voltage regulator unit includes: the power input terminal VIN of the voltage regulator chip U13 is connected to the first terminal of the resistor R17, the first terminal of the capacitor C83, the first terminal of the capacitor C5, the first terminal of the capacitor C4, and the 12V power supply VCC12V. The enable pin EN of the voltage regulator chip U13 is connected to the second terminal of resistor R17; The voltage output terminal VOUT of the voltage regulator chip U13 is connected to the first terminal of capacitor C6, the first terminal of capacitor C7, and the first terminal of capacitor C86, and outputs a 3.3V power supply P3V3. The voltage adjustment terminal VOS of the voltage regulator chip U13 is connected to the first terminal of resistor R19; The feedback terminal FB of the voltage regulator chip U13 is connected to the second terminal of resistor R19 and the first terminal of resistor R3. The ground terminal GND of the voltage regulator chip U13 is connected to the second terminals of capacitors C83, C5, C4, R3, C6, C7, and C86, and then grounded. In a preferred embodiment of this utility model, the 9th voltage regulator unit includes: the voltage input terminal VIN of the adjustable voltage regulator D2 is connected to the first terminal of the capacitor C73 and the power supply VCC_15V_IN; The second terminal of capacitor C73 is grounded; The voltage output terminal VOUT of the adjustable voltage regulator D2 is connected to the voltage output terminal TAB / VOUT of the adjustable voltage regulator D2 and the first terminal of the resistor R171; The adjustable voltage regulator D2 adjustment terminal ADJ is connected to the first terminal of resistor R172 and the first terminal of resistor R173; The second terminal of resistor R171 is connected to the second terminal of resistor R172 and the first terminal of capacitor C74, and outputs a 14V power supply VCC_14V_DIS. The second terminal of resistor R173 is grounded, and the second terminal of capacitor C74 is grounded. In a preferred embodiment of this utility model, the 10th voltage regulator unit includes: the positive power supply terminal of connector J1 is connected to the negative terminal of transient suppression diode VD4, the first terminal of capacitor C66, and the first terminal of inductor L3; The negative power supply terminal of connector J1 is connected to the positive terminal of transient suppression diode VD4, the second terminal of capacitor C66, and the second terminal of inductor L3; The third terminal of inductor L3 is connected to the first terminal of capacitor C67, the first terminal of capacitor C76, the first terminal of capacitor C68, and the ground terminal GND of converter U10. The fourth terminal of inductor L3 is connected to the second terminal of capacitor C67, the second terminal of capacitor C76, the second terminal of capacitor C68, and the power input terminal VIN of converter U10; The positive voltage output terminal VO+ of converter U10 is connected to the first terminal of capacitor C71 and the first terminal of inductor L1. The negative voltage output terminal VO- of converter U10 is connected to the second terminal of capacitor C71 and the second terminal of inductor L1; The third terminal of inductor L1 is connected to the first terminal of capacitor C8 and the first terminal of capacitor C22 and grounded; The fourth terminal of inductor L1 is connected to the second terminal of capacitor C8 and the second terminal of capacitor C22, and outputs a 15V power supply VCC_15V_IN.

[0005] In summary, due to the adoption of the above technical solution, the beneficial effect of this utility model is that it converts the input voltage into the operating voltage required by each module (such as CPU, DDR, display module, etc.), ensuring stable system operation.

[0006] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0007] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the circuit connection of the first voltage regulator unit of this utility model.

[0008] Figure 2 This is a schematic diagram of the circuit connection of the second voltage regulator unit of this utility model.

[0009] Figure 3 This is a schematic diagram of the circuit connection of the third voltage regulator unit of this utility model.

[0010] Figure 4 This is a schematic diagram of the circuit connection of the fourth voltage regulator unit of this utility model.

[0011] Figure 5 This is a schematic diagram of the circuit connection of the fifth voltage regulator unit of this utility model.

[0012] Figure 6 This is a schematic diagram of the circuit connection of the 6th voltage regulator unit of this utility model.

[0013] Figure 7 This is a schematic diagram of the circuit connection of the 7th voltage regulator unit of this utility model.

[0014] Figure 8This is a schematic diagram of the circuit connection of the 8th voltage regulator unit of this utility model.

[0015] Figure 9 This is a schematic diagram of the circuit connection of the 9th voltage regulator unit of this utility model.

[0016] Figure 10 This is a schematic diagram of the circuit connection of the 10th voltage regulator unit of this utility model. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] This utility model discloses a power supply circuit for a multi-channel controlled DC power supply, wherein the specific connection method of the first channel voltage regulator unit circuit is shown in the schematic diagram below. Figure 1 As shown: Filtering and protection module: The 5V power supply VCC_5V_IN is connected to the first terminal of fuse F1. The second terminal of fuse F1 is connected to the negative terminal of diode D1, the first terminal of capacitor C42, the first terminal of capacitor C43 and the first terminal of capacitor C44, and outputs the 5V power supply VCC5V0_SYS. The positive terminal of diode D1 is grounded, the second terminal of capacitor C42 is grounded, the second terminal of capacitor C43 is grounded, and the second terminal of capacitor C44 is grounded. The input 5V power supply VCC_5V_IN is converted into a stable 5V power supply VCC5V0_SYS output through a filter protection module. Fuse F1 provides overcurrent protection, diode D1 (SMAJ6.0) provides surge overvoltage protection, and three capacitors connected in parallel with different voltages provide filter protection.

[0019] The connection diagram for the second voltage regulator unit circuit is shown below. Figure 2 As shown: The 5V power supply VCC5V0_SYS is connected to the first terminal of resistor R38, the first terminal of capacitor C45, the first terminal of capacitor C46, ​​the power input terminal VIN1 of voltage regulator U4, and the power input terminal VIN2 of voltage regulator U4. The second terminal of capacitor C45 is grounded, and the second terminal of capacitor C46 is grounded. The second terminal of resistor R38 is connected to the first terminal of capacitor C47 and the enable terminal EN of voltage regulator U4; The power status indicator terminal PG of voltage regulator U4 is connected to the first terminal of resistor R53, and the second terminal of resistor R53 is connected to the second terminal of resistor R41. The second terminal of capacitor C47 is grounded; The power output terminal VOUT1 of voltage regulator U4 is connected to the power output terminal VOUT2 of voltage regulator U4, the first terminal of capacitor C48, the first terminal of capacitor C49 and the first terminal of capacitor C50, and outputs a 0.9V power supply VDD_0V9. The second terminal of capacitor C48 is grounded, the second terminal of capacitor C49 is grounded, and the second terminal of capacitor C50 is grounded. The output voltage fine-tuning terminal VOS of voltage regulator U4 is connected to the first terminal of resistor R39; The second end of resistor R39 is connected to the feedback terminals FB1 and FB2 of voltage regulator U4 and the first end of resistor R40; The second end of resistor R40 is connected to the grounding terminal GND2 and grounding terminal GND1 of voltage regulator U4 and then grounded. The 5V power supply VCC5V0_SYS input voltage is stably converted to a 0.9V power supply VDD_0V9 output; the 0.9V power supply voltage is output through the regulator U4 (NAE03S03-B), setting resistor R39 (20K), and resistor R40 (160K).

[0020] The connection diagram for the third voltage regulator unit circuit is shown below. Figure 3 As shown: The 5V power supply VCC5V0_SYS is connected to the first terminal of resistor R54, the first terminal of capacitor C66, the first terminal of capacitor C67, the power input terminal VIN1 of voltage regulator U8, and the power input terminal VIN2 of voltage regulator U8. The second terminal of capacitor C66 is grounded, and the second terminal of capacitor C67 is grounded. The second terminal of resistor R54 is connected to the first terminal of capacitor C68 and the enable terminal EN of voltage regulator U8. The second terminal of capacitor C68 is grounded; The power output terminal VOUT1 of voltage regulator U8 is connected to the power output terminal VOUT2 of voltage regulator U8, the first terminal of capacitor C69, the first terminal of capacitor C70, and the first terminal of capacitor C71, and outputs a 3.3V power supply VCC_3V3. The second terminal of capacitor C69 is grounded, the second terminal of capacitor C70 is grounded, and the second terminal of capacitor C71 is grounded. The output voltage fine-tuning terminal VOS of voltage regulator U8 is connected to the first terminal of resistor R55. The second end of resistor R55 is connected to the feedback terminals FB1 and FB2 of voltage regulator U8 and the first end of resistor R58. The second end of resistor R58 is connected to the grounding terminal GND2 and grounding terminal GND1 of voltage regulator U8 and then grounded. The 5V power supply VCC5V0_SYS input voltage is stably converted to a 3.3V power supply VCC_3V3 output; the 3.3V power supply voltage is output through the regulator U8 (NAE03S03-B), setting resistor R55 (20K), and resistor R58 (6.34K).

[0021] The specific connection method of the fourth voltage regulator unit circuit diagram is as follows: Figure 4 As shown: The 5V power supply VCC5V0_SYS is connected to the first terminal of resistor R44, the first terminal of capacitor C57, the first terminal of capacitor C58, the power input terminals VIN1 and VIN2 of voltage regulator U6; The second terminal of capacitor C57 is grounded, and the second terminal of capacitor C58 is grounded. The second terminal of resistor R44 is connected to the first terminal of capacitor C59 and the enable terminal EN of voltage regulator U6, and the second terminal of capacitor C59 is grounded. The power status indicator terminal PG of voltage regulator U6 is connected to the first terminal of resistor R56, and the second terminal of resistor R56 is connected to the second terminal of resistor R41. The power output terminal VOUT1 of voltage regulator U6 is connected to the power output terminal VOUT2 of voltage regulator U6, the first terminal of capacitor C60, the first terminal of capacitor C61, the first terminal of capacitor C62, and outputs the CPU power supply VDD_CPU. The second terminal of capacitor C60 is grounded, the second terminal of capacitor C61 is grounded, and the second terminal of capacitor C62 is grounded. The output voltage fine-tuning terminal VOS of voltage regulator U6 is connected to the first terminal of resistor R45. The second terminal of resistor R45 is connected to the first terminal of resistor R46, the feedback terminal FB1 of voltage regulator U6, the feedback terminal FB2 of voltage regulator U6, and the first terminal of resistor R51. The second end of resistor R46 is connected to the grounding terminals GND2 and GND1 of voltage regulator U6 and then grounded. The second terminal of resistor R51 is connected to the first terminal of capacitor C65, the first terminal of resistor R52, and the first terminal of resistor R50. The second terminal of capacitor C65 is grounded, and the second terminal of resistor R52 is grounded. The second end of resistor R50 is connected to the first end of resistor R48 and the PWM signal output terminal of the main control processor. The second end of resistor R48 is connected to the 3.3V power supply VCC_3V3. The feedback network R45 (20K) and R46 (160K) and the PWM control of the main control processor achieve dynamic voltage regulation. The main control processor outputs a PWM signal to adjust the duty cycle to adjust the effective resistance value of the feedback network, thereby changing the output voltage. It provides a dynamically adjustable low-voltage high-current power supply to the CPU. Through the voltage regulator U6 (NAE03S03-B), the feedback network R45 (20K) and R46 (160K) and the filter capacitor, the voltage is kept stable.

[0022] The specific connection method of the fifth voltage regulator unit circuit diagram is as follows: Figure 5 As shown: The 5V power supply VCC5V0_SYS is connected to the first terminal of resistor R41, the first terminal of capacitor C51, the first terminal of capacitor C52, the power input terminal VIN1 of voltage regulator U5, and the power input terminal VIN2 of voltage regulator U5. The second terminal of capacitor C51 is grounded, and the second terminal of capacitor C52 is grounded. The second terminal of resistor R41 is connected to the first terminal of capacitor C53 and the enable terminal EN of voltage regulator U5; The second terminal of capacitor C53 is grounded; The power status indicator terminal PG of voltage regulator U5 is connected to the first terminal of resistor R57, and the second terminal of resistor R57 is connected to the second terminal of resistor R54. The power output terminal VOUT1 of voltage regulator U5 is connected to the power output terminal VOUT2 of voltage regulator U5, the first terminal of capacitor C54, the first terminal of capacitor C55, and the first terminal of capacitor C56, and outputs DDR power VCC_DDR. The second terminal of capacitor C54 is grounded, the second terminal of capacitor C55 is grounded, and the second terminal of capacitor C56 is grounded. The output voltage fine-tuning terminal VOS of voltage regulator U5 is connected to the first terminal of resistor R42; The second end of resistor R42 is connected to the feedback terminals FB1 and FB2 of voltage regulator U5 and the first end of resistor R43; The second end of resistor R43 is connected to the grounding terminal GND2 and grounding terminal GND1 of voltage regulator U5 and then grounded. The 5V power supply VCC5V0_SYS input voltage is stably converted to the DDR power supply VCC_DDR output to provide a stable voltage value for the DDR memory. The output voltage is 0.9V through the regulator U5 (NAE03S03-B), setting resistor R42 (20K), and R43 (28.7K).

[0023] The connection diagram for the sixth voltage regulator unit circuit is shown below. Figure 6 As shown: The 3.3V power supply VCC_3V3 is connected to the first terminal of capacitor C63 and the power input terminal VIN of voltage regulator U7, and the second terminal of capacitor C63 is grounded. The voltage regulator U7's voltage adjustment terminal GND / ADJ is connected to the first terminal of resistor R49 and the first terminal of resistor R47; The second terminal of resistor R49 is grounded, and the second terminal of resistor R47 is connected to the first terminal of capacitor C64, the power output terminal VOUT_2 of voltage regulator U7, and the power output terminal VOUT_1 of voltage regulator U7, and outputs a 1.8V power supply VCC_1V8. The second terminal of capacitor C64 is grounded; The 3.3V power supply VCC_3V3 input is converted into a stable 1.8V power supply VCC_1V8 output to power the chip that requires 1.8V; the 1.8V power supply voltage is output through the regulator U7 (ZTP1117SA), setting resistor R47 (270Ω), and R49 (120Ω).

[0024] The specific connection method of the 7th voltage regulator unit circuit diagram is as follows: Figure 7 As shown: The voltage input terminal VIN of the DC-DC converter chip U61 is connected to the first terminal of resistor R16, the first terminal of capacitor C69, and the 25V power supply. The control terminal CTRL of the DC-DC converter chip U61 is connected to the second terminal of resistor R16. The ground terminal GND of DC-DC converter chip U61 is connected to the second terminal of capacitor C69 and grounded. The positive voltage output terminal VO+ of the DC-DC converter chip U61 is connected to the first terminal of capacitor C21 and the first terminal of capacitor C72, and outputs a 12V power supply VCC12V. The first terminal of the TRIM trimmer of the DC-DC converter chip U61 is connected to the first terminal of the resistor R18. The negative voltage output terminal VO of DC-DC converter chip U61 is connected to the second terminal of resistor R18, the second terminal of capacitor C21 and the second terminal of capacitor C72, and then grounded. The circuit is built around the DC-DC converter chip U61 (URB2405YMD-15WR3); it converts the input 25V voltage into a stable 12V output voltage.

[0025] The connection diagram for the 8th voltage regulator unit circuit is shown below. Figure 8 As shown: The power input terminal VIN of the voltage regulator chip U13 is connected to the first terminal of resistor R17, the first terminal of capacitor C83, the first terminal of capacitor C5, the first terminal of capacitor C4, and the 12V power supply VCC12V. The enable pin EN of the voltage regulator chip U13 is connected to the second terminal of resistor R17; The voltage output terminal VOUT of the voltage regulator chip U13 is connected to the first terminal of capacitor C6, the first terminal of capacitor C7, and the first terminal of capacitor C86, and outputs a 3.3V power supply P3V3. The voltage adjustment terminal VOS of the voltage regulator chip U13 is connected to the first terminal of resistor R19; The feedback terminal FB of the voltage regulator chip U13 is connected to the second terminal of resistor R19 and the first terminal of resistor R3. The ground terminal GND of the voltage regulator chip U13 is connected to the second terminals of capacitors C83, C5, C4, R3, C6, C7, and C86, and then grounded. The circuit is built around the voltage regulator chip U13 (nae03s03-b). Through resistors R17 (10K), R19 (20K), and R3 (6.49K), the input 12V voltage is stably regulated to the operating 3.3V voltage required by other chips, ensuring stable operation of the load.

[0026] The specific connection method of the 9th voltage regulator unit circuit diagram is as follows: Figure 9 As shown: The voltage input terminal VIN of the adjustable voltage regulator D2 is connected to the first terminal of capacitor C73 and the fourth terminal of inductor L1; The second terminal of capacitor C73 is grounded; The voltage output terminal VOUT of the adjustable voltage regulator D2 is connected to the voltage output terminal TAB / VOUT of the adjustable voltage regulator D2 and the first terminal of the resistor R171; The adjustable voltage regulator D2 adjustment terminal ADJ is connected to the first terminal of resistor R172 and the first terminal of resistor R173; The second terminal of resistor R171 is connected to the second terminal of resistor R172 and the first terminal of capacitor C74, and outputs a 14V power supply VCC_14V_DIS. The second terminal of resistor R173 is grounded, and the second terminal of capacitor C74 is grounded. By adjusting the resistors R127 (240R) and R173 (2.49K) on the adjustment terminal ADJ of the adjustable voltage regulator D2 (LM317EMP), a stable output voltage of 14V can be generated to power the display module.

[0027] The connection diagram for the 10th voltage regulator unit is shown below. Figure 10 As shown: The positive power supply terminal of connector J1 is connected to the negative terminal of transient suppression diode VD4, the first terminal of capacitor C66, and the first terminal of inductor L3; The negative power supply terminal of connector J1 is connected to the positive terminal of transient suppression diode VD4, the second terminal of capacitor C66, and the second terminal of inductor L3; The third terminal of inductor L3 is connected to the first terminal of capacitor C67, the first terminal of capacitor C76, the first terminal of capacitor C68, and the ground terminal GND of converter U10. The fourth terminal of inductor L3 is connected to the second terminal of capacitor C67, the second terminal of capacitor C76, the second terminal of capacitor C68, and the power input terminal VIN of converter U10; The positive voltage output terminal VO+ of converter U10 is connected to the first terminal of capacitor C71 and the first terminal of inductor L1. The negative voltage output terminal VO- of converter U10 is connected to the second terminal of capacitor C71 and the second terminal of inductor L1; The third terminal of inductor L1 is connected to the first terminal of capacitor C8 and the first terminal of capacitor C22 and grounded; The fourth terminal of inductor L1 is connected to the second terminal of capacitor C8, the second terminal of capacitor C22, and the first terminal of capacitor C73; The PWR_IN+ and PWR_IN- interfaces of connector J1 support external 24V power input. Transient voltage suppression diode VD4 (SMBJ33A) prevents surge voltage from damaging the circuit. Inductor L3 (SMCM7060-102T) effectively suppresses high-frequency noise and reduces conducted interference. The 15V power supply VCC_15V_IN is output through converter U10 (URB2415S-6WR3).

[0028] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A circuit for supplying power to a multi-path controlled DC power supply, characterized in that, include: One or any combination of the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th and 10th voltage regulator units; The voltage output terminal of the first regulated power supply unit is connected to the voltage input terminals of the second, third, fourth, and fifth regulated power supply units. The voltage output terminal of the third regulated power supply unit is connected to the voltage input terminal of the sixth regulated power supply unit; The voltage output terminal of the 7th regulated power supply unit is connected to the voltage input terminal of the 8th regulated power supply unit; The voltage output terminal of the 10th regulated power supply unit is connected to the voltage input terminal of the 9th regulated power supply unit.

2. The circuit for multi-path controlled DC power supply according to claim 1, characterized in that, The first voltage regulator unit includes: The 5V power supply VCC_5V_IN is connected to the first terminal of fuse F1. The second terminal of fuse F1 is connected to the negative terminal of diode D1, the first terminal of capacitor C42, the first terminal of capacitor C43 and the first terminal of capacitor C44, and outputs the 5V power supply VCC5V0_SYS. The positive terminal of diode D1 is grounded, the second terminal of capacitor C42 is grounded, the second terminal of capacitor C43 is grounded, and the second terminal of capacitor C44 is grounded.

3. The circuit for multi-path controlled DC power supply according to claim 1, characterized in that, The second voltage regulator unit includes: The 5V power supply VCC5V0_SYS is connected to the first terminal of resistor R38, the first terminal of capacitor C45, the first terminal of capacitor C46, ​​the power input terminal VIN1 of voltage regulator U4, and the power input terminal VIN2 of voltage regulator U4. The second terminal of capacitor C45 is grounded, and the second terminal of capacitor C46 is grounded. The second terminal of resistor R38 is connected to the first terminal of capacitor C47 and the enable terminal EN of voltage regulator U4; The power status indicator terminal PG of voltage regulator U4 is connected to the first terminal of resistor R53, and the second terminal of resistor R53 is connected to the second terminal of resistor R41. The second terminal of capacitor C47 is grounded; The power output terminal VOUT1 of voltage regulator U4 is connected to the power output terminal VOUT2 of voltage regulator U4, the first terminal of capacitor C48, the first terminal of capacitor C49 and the first terminal of capacitor C50, and outputs a 0.9V power supply VDD_0V9. The second terminal of capacitor C48 is grounded, the second terminal of capacitor C49 is grounded, and the second terminal of capacitor C50 is grounded. The output voltage fine-tuning terminal VOS of voltage regulator U4 is connected to the first terminal of resistor R39; The second end of resistor R39 is connected to the feedback terminals FB1 and FB2 of voltage regulator U4 and the first end of resistor R40; The second end of resistor R40 is connected to the grounding terminal GND2 and grounding terminal GND1 of voltage regulator U4 and grounded.

4. The circuit for multi-path controlled DC power supply according to claim 1, characterized in that, The third voltage regulator unit includes: The 5V power supply VCC5V0_SYS is connected to the first terminal of resistor R54, the first terminal of capacitor C66, the first terminal of capacitor C67, the power input terminal VIN1 of voltage regulator U8, and the power input terminal VIN2 of voltage regulator U8. The second terminal of capacitor C66 is grounded, and the second terminal of capacitor C67 is grounded. The second terminal of resistor R54 is connected to the first terminal of capacitor C68 and the enable terminal EN of voltage regulator U8; The second terminal of capacitor C68 is grounded; The power output terminal VOUT1 of voltage regulator U8 is connected to the power output terminal VOUT2 of voltage regulator U8, the first terminal of capacitor C69, the first terminal of capacitor C70, and the first terminal of capacitor C71, and outputs a 3.3V power supply VCC_3V3. The second terminal of capacitor C69 is grounded, the second terminal of capacitor C70 is grounded, and the second terminal of capacitor C71 is grounded. The output voltage fine-tuning terminal VOS of voltage regulator U8 is connected to the first terminal of resistor R55. The second end of resistor R55 is connected to the feedback terminals FB1 and FB2 of voltage regulator U8 and the first end of resistor R58. The second end of resistor R58 is connected to the grounding terminal GND2 and grounding terminal GND1 of voltage regulator U8 and grounded.

5. The circuit for multi-path controlled DC power supply according to claim 1, characterized in that, The fourth voltage regulator unit includes: The 5V power supply VCC5V0_SYS is connected to the first terminal of resistor R44, the first terminal of capacitor C57, the first terminal of capacitor C58, the power input terminals VIN1 and VIN2 of voltage regulator U6; The second terminal of capacitor C57 is grounded, and the second terminal of capacitor C58 is grounded. The second terminal of resistor R44 is connected to the first terminal of capacitor C59 and the enable terminal EN of voltage regulator U6, and the second terminal of capacitor C59 is grounded. The power status indicator terminal PG of voltage regulator U6 is connected to the first terminal of resistor R56, and the second terminal of resistor R56 is connected to the second terminal of resistor R41. The power output terminal VOUT1 of voltage regulator U6 is connected to the power output terminal VOUT2 of voltage regulator U6, the first terminal of capacitor C60, the first terminal of capacitor C61, the first terminal of capacitor C62, and outputs the CPU power supply VDD_CPU. The second terminal of capacitor C60 is grounded, the second terminal of capacitor C61 is grounded, and the second terminal of capacitor C62 is grounded. The output voltage fine-tuning terminal VOS of voltage regulator U6 is connected to the first terminal of resistor R45. The second terminal of resistor R45 is connected to the first terminal of resistor R46, the feedback terminal FB1 of voltage regulator U6, the feedback terminal FB2 of voltage regulator U6, and the first terminal of resistor R51. The second end of resistor R46 is connected to the grounding terminals GND2 and GND1 of voltage regulator U6 and then grounded. The second terminal of resistor R51 is connected to the first terminal of capacitor C65, the first terminal of resistor R52, and the first terminal of resistor R50. The second terminal of capacitor C65 is grounded, and the second terminal of resistor R52 is grounded. The second end of resistor R50 is connected to the first end of resistor R48 and the PWM signal output terminal of the main control processor. The second end of resistor R48 is connected to the 3.3V power supply VCC_3V3.

6. The circuit for multi-path controlled DC power supply according to claim 1, characterized in that, The fifth voltage regulator unit includes: The 5V power supply VCC5V0_SYS is connected to the first terminal of resistor R41, the first terminal of capacitor C51, the first terminal of capacitor C52, the power input terminal VIN1 of voltage regulator U5, and the power input terminal VIN2 of voltage regulator U5. The second terminal of capacitor C51 is grounded, and the second terminal of capacitor C52 is grounded. The second terminal of resistor R41 is connected to the first terminal of capacitor C53 and the enable terminal EN of voltage regulator U5; The second terminal of capacitor C53 is grounded; The power status indicator terminal PG of voltage regulator U5 is connected to the first terminal of resistor R57, and the second terminal of resistor R57 is connected to the second terminal of resistor R54. The power output terminal VOUT1 of voltage regulator U5 is connected to the power output terminal VOUT2 of voltage regulator U5, the first terminal of capacitor C54, the first terminal of capacitor C55, and the first terminal of capacitor C56, and outputs DDR power VCC_DDR. The second terminal of capacitor C54 is grounded, the second terminal of capacitor C55 is grounded, and the second terminal of capacitor C56 is grounded. The output voltage fine-tuning terminal VOS of voltage regulator U5 is connected to the first terminal of resistor R42; The second end of resistor R42 is connected to the feedback terminals FB1 and FB2 of voltage regulator U5 and the first end of resistor R43; The second end of resistor R43 is connected to the grounding terminal GND2 and grounding terminal GND1 of voltage regulator U5.

7. The circuit for multi-path controlled DC power supply according to claim 1, characterized in that, The sixth voltage regulator unit includes: The 3.3V power supply VCC_3V3 is connected to the first terminal of capacitor C63 and the power input terminal VIN of voltage regulator U7, and the second terminal of capacitor C63 is grounded. The voltage regulator U7's voltage adjustment terminal GND / ADJ is connected to the first terminal of resistor R49 and the first terminal of resistor R47; The second terminal of resistor R49 is grounded, and the second terminal of resistor R47 is connected to the first terminal of capacitor C64, the power output terminal VOUT_2 of voltage regulator U7, and the power output terminal VOUT_1 of voltage regulator U7, and outputs a 1.8V power supply VCC_1V8. The second terminal of capacitor C64 is grounded.

8. The circuit for multi-path controlled DC power supply according to claim 1, characterized in that, The 7th voltage regulator unit includes: The voltage input terminal VIN of the DC-DC converter chip U61 is connected to the first terminal of resistor R16, the first terminal of capacitor C69, and the 25V power supply. The control terminal CTRL of the DC-DC converter chip U61 is connected to the second terminal of resistor R16. The ground terminal GND of DC-DC converter chip U61 is connected to the second terminal of capacitor C69 and grounded. The positive voltage output terminal VO+ of the DC-DC converter chip U61 is connected to the first terminal of capacitor C21 and the first terminal of capacitor C72, and outputs a 12V power supply VCC12V. The first terminal of the TRIM trimmer of the DC-DC converter chip U61 is connected to the first terminal of the resistor R18. The negative voltage output terminal VO of the DC-DC converter chip U61 is connected to the second terminal of resistor R18, the second terminal of capacitor C21, and the second terminal of capacitor C72, and then grounded.

9. The circuit for multi-path controlled DC power supply according to claim 1, characterized in that, The 8th voltage regulator unit includes: The power input terminal VIN of the voltage regulator chip U13 is connected to the first terminal of resistor R17, the first terminal of capacitor C83, the first terminal of capacitor C5, the first terminal of capacitor C4, and the 12V power supply VCC12V. The enable pin EN of the voltage regulator chip U13 is connected to the second terminal of resistor R17; The voltage output terminal VOUT of the voltage regulator chip U13 is connected to the first terminal of capacitor C6, the first terminal of capacitor C7, and the first terminal of capacitor C86, and outputs a 3.3V power supply P3V3. The voltage adjustment terminal VOS of the voltage regulator chip U13 is connected to the first terminal of resistor R19; The feedback terminal FB of the voltage regulator chip U13 is connected to the second terminal of resistor R19 and the first terminal of resistor R3. The ground terminal GND of the voltage regulator chip U13 is connected to the second terminal of capacitor C83, the second terminal of capacitor C5, the second terminal of capacitor C4, the second terminal of resistor R3, the second terminal of capacitor C6, the second terminal of capacitor C7, and the second terminal of capacitor C86, and then grounded.

10. The circuit for multi-path controlled DC power supply according to claim 1, characterized in that, The 9th voltage regulator unit includes: The voltage input terminal VIN of the adjustable voltage regulator D2 is connected to the first terminal of capacitor C73 and the fourth terminal of inductor L1; The second terminal of capacitor C73 is grounded; The voltage output terminal VOUT of the adjustable voltage regulator D2 is connected to the voltage output terminal TAB / VOUT of the adjustable voltage regulator D2 and the first terminal of the resistor R171; The adjustable voltage regulator D2 adjustment terminal ADJ is connected to the first terminal of resistor R172 and the first terminal of resistor R173; The second terminal of resistor R171 is connected to the second terminal of resistor R172 and the first terminal of capacitor C74, and outputs a 14V power supply VCC_14V_DIS. The second terminal of resistor R173 is grounded, and the second terminal of capacitor C74 is grounded. The 10th voltage regulator unit includes: The positive power supply terminal of connector J1 is connected to the negative terminal of transient suppression diode VD4, the first terminal of capacitor C66, and the first terminal of inductor L3; The negative power supply terminal of connector J1 is connected to the positive terminal of transient suppression diode VD4, the second terminal of capacitor C66, and the second terminal of inductor L3; The third terminal of inductor L3 is connected to the first terminal of capacitor C67, the first terminal of capacitor C76, the first terminal of capacitor C68, and the ground terminal GND of converter U10 and grounded. The fourth terminal of inductor L3 is connected to the second terminal of capacitor C67, the second terminal of capacitor C76, the second terminal of capacitor C68, and the power input terminal VIN of converter U10; The positive voltage output terminal VO+ of converter U10 is connected to the first terminal of capacitor C71 and the first terminal of inductor L1. The negative voltage output terminal VO- of converter U10 is connected to the second terminal of capacitor C71 and the second terminal of inductor L1; The third terminal of inductor L1 is connected to the first terminal of capacitor C8 and the first terminal of capacitor C22 and grounded; The fourth terminal of inductor L1 is connected to the second terminal of capacitor C8, the second terminal of capacitor C22, and the first terminal of capacitor C73.

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