Voltage converter control panel and voltage converter
By setting up a physical isolation zone of weak and strong electricity on the voltage converter control board, the signal interference problem between the main control circuit and the DCDC step-down circuit is solved, the electromagnetic interference between the devices is reduced, and the reliability of the control board is improved. and electromagnetic anti-interference ability.
Patent Information
- Application Number
- CN202420091201.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-01-15
AI Technical Summary
On the existing voltage converter control board, the weak current signal communication between the main control circuit and the DCDC step-down circuit is easily disturbed by strong voltages from the drive voltage and the power supply terminal, resulting in inaccurate data and malfunction of control, while DCDC drops Strong electrical signal communication of voltage circuits may also damage power devices.
Set up a weak current installation area and a strong current installation area on the voltage converter control board to achieve physical isolation between weak current and strong current. The main control circuit board is vertically connected to the DCDC step-down circuit board. The DCDC step-down circuit board is horizontally set close to the switch control circuit board, and the electrical signal is connected through the pin and wire to avoid strong electrical signals interfering with weak electrical signals.
Through physical isolation, the electromagnetic interference between the devices on the voltage converter control board is reduced, the electromagnetic anti-interference ability is improved, the reliability of the control board is enhanced, and the working reliability of the voltage converter is improved.
Smart Images
Figure CN222464421U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of voltage converters, in particular to a voltage converter control board and a voltage converter. Background Art
[0002] At present, there are DCDC buck circuits, main control circuits, and switch control circuits on the voltage converter control boards on the market. Among them, the main control circuit often controls the output of the DCDC buck circuit according to the detection results of the output load, and the switch control circuit provides energy to the output load. However, the communication between the main control circuit and the DCDC buck circuit is weak current signal, which is easily interfered by the driving voltage output by the DCDC buck circuit and the strong current voltage connected to the power supply end, resulting in inaccurate data transmitted by the weak current signal, malfunction of the main control circuit control, and other problems. At the same time, the communication between the output load and the DCDC buck circuit is strong current signal, and the DCDC buck circuit will have power device damage problems. Utility Model Content
[0003] The main purpose of the utility model is to provide a voltage converter control board, aiming to reduce the electromagnetic interference between devices on the voltage converter control board and improve the working reliability of the voltage converter control board.
[0004] To achieve the above object, the utility model provides a voltage converter control board, including a circuit board, on which a main control circuit board installation area, a DCDC step-down circuit board installation area and a switch control circuit board installation area are provided;
[0005] The main control circuit board installation area is provided with a main control circuit board, the DCDC step-down circuit board installation area is provided with a DCDC step-down circuit board, and the switch control circuit board installation area is provided with a switch control circuit board. The main control circuit board is vertically connected to the DCDC step-down circuit board; and the DCDC step-down circuit board is horizontally arranged close to the switch control circuit board.
[0006] Preferably, the main control circuit board installation area is a weak current area, the DCDC step-down circuit board installation area is a strong current area, and the switch control circuit board installation area is a strong current area.
[0007] Preferably, the main control circuit board is provided with a control chip, a power supply circuit, an input voltage sampling circuit, an output voltage sampling circuit, a current sampling circuit, a temperature sampling circuit and a burning pad connected to the control chip;
[0008] The DCDC step-down circuit board is provided with a load current detection circuit and a step-down circuit connected to the load current detection circuit;
[0009] A relay circuit and a transient suppression circuit are arranged on the switch control circuit board, and the relay circuit is electrically connected to an external load.
[0010] Preferably, the relay circuit and the transient suppression circuit are both arranged in the middle position of the switch control circuit board installation area.
[0011] Preferably, the input voltage sampling circuit, the output voltage sampling circuit, the current sampling circuit, the temperature sampling circuit, the main control chip, and the burning pad are all arranged in the middle position of the main control circuit board installation area.
[0012] Preferably, the load current detection circuit and the buck circuit are both arranged in the middle position of the DCDC buck circuit board installation area.
[0013] Preferably, the main control circuit board includes a top wiring layer and a bottom wiring layer, the top wiring layer is welded with electrical components, and the bottom wiring layer is used as circuit wiring. The main control circuit board and the DCDC step-down circuit board are electrically connected through pin headers to transmit control signals.
[0014] Preferably, the DCDC step-down circuit board includes a top wiring surface and a bottom wiring surface, the top wiring surface is welded with electrical components, and the bottom wiring surface is used as a mounting plane. The DCDC step-down circuit board is electrically connected to the switch control circuit board through a wire to provide output voltage and output current.
[0015] Preferably, the switch control circuit board includes a top wiring surface and a bottom wiring surface, the top wiring surface is welded with electrical components, and the bottom wiring surface is used as a mounting plane. The switch control circuit board is electrically connected to the output wiring harness through the pads on the switch control circuit board to provide the capacity required by the load.
[0016] To achieve the above object, the utility model further provides a voltage converter, wherein the voltage converter comprises the voltage converter control board as described above.
[0017] The beneficial effects of the voltage converter control board and the voltage converter of the utility model are:
[0018] The utility model realizes physical isolation of weak current and strong current by arranging a weak current installation area and a strong current installation area on a circuit board, so that when a voltage converter control board is working, a strong current signal in a DCDC step-down circuit installation area on the circuit board will not interfere with a weak current signal in the weak current installation area, thereby reducing electromagnetic interference between components on the voltage converter control board, improving the electromagnetic interference and electromagnetic anti-interference capabilities of the circuit board, improving the reliability of the operation of the voltage converter control board, and further improving the reliability of the operation of the voltage converter. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is the structural diagram of the DCDC step-down circuit board;
[0020] Figure 2 It is a structural diagram of the main control circuit board;
[0021] Figure 3 It is a schematic diagram of the structure of the switch control circuit board;
[0022] Figure 4 It is a schematic diagram of the overall structure of a preferred embodiment of the voltage converter control board of the utility model.
[0023] Description of Figure Numbers:
[0024] Output wiring harness 1; switch control circuit board 2; DCDC step-down circuit board 3; main control circuit board 4. DETAILED DESCRIPTION
[0025] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0026] Please refer to Figures 1 to 4 The utility model proposes a voltage converter control board. The preferred embodiment of the voltage converter control board of the utility model includes a circuit board, on which a main control circuit board 4 mounting area, a DCDC step-down circuit board 3 mounting area and a switch control circuit board 2 mounting area are provided.
[0027] The main control circuit board 4 is provided in the installation area of the main control circuit board 4, the DCDC step-down circuit board 3 is provided in the installation area of the DCDC step-down circuit board 3, and the switch control circuit board 2 is provided in the installation area of the switch control circuit board 2. The main control circuit board 4 is vertically connected to the DCDC step-down circuit board 3; the DCDC step-down circuit board 3 is horizontally arranged close to the switch control circuit board 2.
[0028] In this embodiment, the installation area of the main control circuit board 4 is a weak current area, the installation area of the DCDC step-down circuit board 3 is a strong current area, and the installation area of the switch control circuit board 2 is a strong current area.
[0029] In this embodiment, the main control circuit board 4 is provided with a control chip, a power supply circuit, an input voltage sampling circuit, an output voltage sampling circuit, a current sampling circuit, a temperature sampling circuit and a burning pad connected to the control chip.
[0030] The DCDC step-down circuit board 3 is provided with a load current detection circuit and a step-down circuit connected to the load current detection circuit.
[0031] The switch control circuit board 2 is provided with a relay circuit and a transient suppression circuit, and the relay circuit is electrically connected to an external load.
[0032] In this embodiment, the relay circuit and the transient suppression circuit are both arranged in the middle position of the installation area of the switch control circuit board 2 .
[0033] In this embodiment, the input voltage sampling circuit, the output voltage sampling circuit, the current sampling circuit, the temperature sampling circuit, the main control chip, and the burning pad are all arranged in the middle position of the installation area of the main control circuit board 4.
[0034] In this embodiment, the load current detection circuit and the buck circuit are both arranged in the middle position of the installation area of the DCDC buck circuit board 3 .
[0035] In this embodiment, the main control circuit board 4 includes a top wiring layer and a bottom wiring layer. The top wiring layer is welded with electrical components, and the bottom wiring layer is used as circuit wiring. The main control circuit board 4 is electrically connected to the DCDC step-down circuit board 3 through a pin header to transmit control signals.
[0036] In this embodiment, the DCDC step-down circuit board 3 includes a top wiring surface and a bottom wiring surface. The top wiring surface is welded with electrical components, and the bottom wiring surface is used as a mounting plane. The DCDC step-down circuit board 3 is electrically connected to the switch control circuit board 2 through a wire to provide output voltage and output current.
[0037] In this embodiment, the switch control circuit board 2 includes a top wiring surface and a bottom wiring surface. The top wiring surface is welded with electrical components, and the bottom wiring surface is used as a mounting plane. The switch control circuit board 2 is electrically connected to the output wiring harness 1 through the pads on the switch control circuit board 2 to provide the required load capacity.
[0038] The beneficial effects of the voltage converter control board of the utility model are:
[0039] The utility model realizes physical isolation of weak current and strong current by arranging a weak current installation area and a strong current installation area on a circuit board, so that when a voltage converter control board is working, a strong current signal in a DCDC step-down circuit installation area on the circuit board will not interfere with a weak current signal in the weak current installation area, thereby reducing electromagnetic interference between components on the voltage converter control board, improving the electromagnetic interference and electromagnetic anti-interference capabilities of the circuit board, improving the reliability of the operation of the voltage converter control board, and further improving the reliability of the operation of the voltage converter.
[0040] To achieve the above object, the utility model further proposes a voltage converter, which includes the voltage converter control board as described above. The structure and working principle of the voltage converter control board have been described in detail above and will not be repeated here.
[0041] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A voltage converter control board, characterized in that: It includes a circuit board, on which a main control circuit board installation area, a DCDC step-down circuit board installation area and a switch control circuit board installation area are provided; The main control circuit board installation area is provided with a main control circuit board, the DCDC step-down circuit board installation area is provided with a DCDC step-down circuit board, and the switch control circuit board installation area is provided with a switch control circuit board. The main control circuit board is vertically connected to the DCDC step-down circuit board; and the DCDC step-down circuit board is horizontally arranged close to the switch control circuit board.
2. The voltage converter control board according to claim 1, characterized in that: The main control circuit board installation area is a weak current area, the DCDC step-down circuit board installation area is a strong current area, and the switch control circuit board installation area is a strong current area.
3. The voltage converter control board according to claim 1, characterized in that: The main control circuit board is provided with a control chip, a power supply circuit connected to the control chip, an input voltage sampling circuit, an output voltage sampling circuit, a current sampling circuit, a temperature sampling circuit and a burning pad; The DCDC step-down circuit board is provided with a load current detection circuit and a step-down circuit connected to the load current detection circuit; A relay circuit and a transient suppression circuit are arranged on the switch control circuit board, and the relay circuit is electrically connected to an external load.
4. The voltage converter control board according to claim 3, characterized in that: The relay circuit and the transient suppression circuit are both arranged in the middle position of the switch control circuit board installation area.
5. The voltage converter control board according to claim 4, characterized in that: The input voltage sampling circuit, the output voltage sampling circuit, the current sampling circuit, the temperature sampling circuit, the main control chip, and the burning pad are all arranged in the middle position of the main control circuit board installation area.
6. The voltage converter control board according to claim 3, characterized in that: The load current detection circuit and the buck circuit are both arranged in the middle position of the DCDC buck circuit board installation area.
7. The voltage converter control board according to claim 1, characterized in that: The main control circuit board includes a top wiring layer and a bottom wiring layer. The top wiring layer is welded with electrical components, and the bottom wiring layer is used as circuit wiring. The main control circuit board and the DCDC step-down circuit board are electrically connected through pin headers to transmit control signals.
8. The voltage converter control board according to claim 1, characterized in that: The DCDC step-down circuit board includes a top wiring surface and a bottom wiring surface. The top wiring surface is welded with electrical components, and the bottom wiring surface is used as a mounting plane. The DCDC step-down circuit board is electrically connected to the switch control circuit board through a wire to provide output voltage and output current.
9. The voltage converter control board according to claim 1, characterized in that: The switch control circuit board includes a top wiring surface and a bottom wiring surface. The top wiring surface is welded with electrical components, and the bottom wiring surface is used as a mounting plane. The switch control circuit board is electrically connected to the output wiring harness through the pads on the switch control circuit board to provide the required capacity for the load.
10. A voltage converter, characterized in that: The voltage converter comprises a voltage converter control board as claimed in any one of claims 1 to 9.