5-75V pressure regulating system

Abstract

The utility model discloses a 5-75V voltage regulating system, and belongs to the technical field of voltage regulation. Comprising a display screen module and a buck-boost module, the outer side of the display screen module is provided with a display screen 1 for displaying voltage and current, the back of the display screen module is provided with a connection port 2, the connection port 2 is connected with a module connection part 4 of the buck-boost module, and the outer side of the display module is provided with a switch 3; through the arrangement of the display screen module with the switch key and the buck-boost module, any voltage in the DC 10-75V range can be connected with the input end of the buck-boost module in the set of module, the set of module converts the original input voltage into 10 common voltages (5V, 9V, 12V, 15V, 24V, 36V, 48V, 60V, 72V and 75V) to be output, electricity is provided for equipment needing the same voltage, and after the modules are connected, the input end of the buck-boost module is connected with the input end of the buck-boost module. Required voltage can be called out through a switch button, and 10 commonly used voltage segments of 5V, 9V, 12V, 15V, 24V, 36V, 48V, 60V, 72V and 75V can be output.

Description

Technical Field

[0001] The present application relates to the field of voltage regulation technology, and more specifically, to a 5-75V voltage regulation system. Background Art

[0002] Equipment performance is directly related to voltage. Voltage changes will affect the stability of equipment performance or output parameters. In practical applications, electronic circuits usually require a DC power supply with stable voltage. Therefore, the traditional regulation system will adjust the voltage at the voltage center point to the upper limit during the peak load period of the power system, and adjust the voltage to the lower limit of the voltage curve during the valley load period. However, after the traditional regulation voltage difference is determined, it will not change during the entire working period. In order to maintain a better power supply voltage quality, we propose a 5-75V voltage regulation system. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] The purpose of this application is to provide a 5-75V voltage regulation system to solve the problems raised in the above background technology.

[0005] 2. Technical solution

[0006] A 5-75V voltage regulation system, comprising: a display screen module and a buck-boost module;

[0007] A display screen for displaying voltage and current is arranged on the outside of the display screen module, and a connection port is arranged on the back of the display screen module, and the connection port is connected to the module connection of the buck-boost module;

[0008] Connect any voltage within the DC10-75V range to the input end of the buck-boost module. The buck-boost module converts the original input voltage into a commonly used voltage output to provide power for devices with the same voltage. The required voltage is adjusted through the switch button, so that the output voltage is in the commonly used voltage range.

[0009] As an optional solution of the technical solution of the present application document, the buck-boost module consists of RX1 input undervoltage regulation, RX2 input tracking voltage regulation, RX3 input current regulation, RX4 output voltage regulation, RX5 output current regulation, VIN+ power input positive pole, GND power input and output negative pole, VO+ power output positive pole, P1 power enable control interface, P2 temperature control fan 12V / 0.3 power supply interface, P3 optional digital ammeter, P4 optional digital voltmeter, P5-1 signal GND for control, P5-2 welding port for output current control, P5-3 welding port for output voltage control, P5-4 welding port for input current control, and P5-5 welding port for input tracking voltage control.

[0010] As an optional solution to the technical solution of the present application document, a switch is provided on the outside of the display module, and the voltage adjustment state of the buck-boost module can be entered by pressing and holding the switch for three seconds.

[0011] As an optional solution of the technical solution of this application document, the buck-boost module adopts a non-isolated four-switch synchronous buck_boost chip.

[0012] As an optional solution of the technical solution of this application document, the display screen module adopts an MCU minimum system inside, and the internal power supply circuit of the MCU minimum system is a 3.3V power supply circuit. The maximum input voltage of the 3.3V power supply circuit is 18V and the maximum current is 1000mA.

[0013] As an optional solution of the technical solution of the present application document, an EPROM storage circuit is provided in the buck-boost module, and the EPROM storage circuit is used to strictly prohibit write protection when WP is at a low level and to write protect when WP is at a high level.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of this application are:

[0016] Through the setting of the display screen module with switch buttons and the buck-boost module, any voltage in the range of DC10-75V can be connected to the input end of the buck-boost module in this set of modules. This set of modules converts the original input voltage into 10 commonly used voltages (5V, 9V, 12V, 15V, 24V, 36V, 48V, 60V, 72V, 75V) and outputs it to provide power for equipment with the same voltage. After the modules are connected, the required voltage can be called out by the switch button. The output voltage has 10 commonly used voltage segments of 5V, 9V, 12V, 15V, 24V, 36V, 48V, 60V, 72V, and 75V. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a display screen of a 5-75V voltage regulation system disclosed in a preferred embodiment of the present application;

[0018] Figure 2 A schematic diagram of a buck-boost module of a 5-75V voltage regulation system disclosed in a preferred embodiment of the present application;

[0019] Figure 3 A single-chip minimum system circuit diagram of a 5-75V voltage regulation system disclosed in a preferred embodiment of the present application;

[0020] Figure 4 A 3.3V power supply circuit diagram of a 5-75V voltage regulation system disclosed in a preferred embodiment of the present application;

[0021] Figure 5 A digital tube circuit diagram of a 5-75V voltage regulation system disclosed in a preferred embodiment of the present application;

[0022] Figure 6 A switch button circuit diagram of a 5-75V voltage regulation system disclosed in a preferred embodiment of the present application;

[0023] Figure 7 A circuit diagram of an EPROM non-volatile memory of a 5-75V voltage regulation system disclosed in a preferred embodiment of the present application;

[0024] Figure 8 An ADC digital converter interface circuit diagram of a 5-75V voltage regulation system disclosed in a preferred embodiment of the present application;

[0025] Fig. 9 A DAC digital signal conversion analog signal interface circuit diagram of a 5-75V voltage regulation system disclosed in a preferred embodiment of the present application;

[0026] Fig.10 A main circuit diagram of a 5-75V voltage regulation system disclosed in a preferred embodiment of the present application;

[0027] Fig.11 A circuit diagram of a 5-75V voltage regulating system disclosed in a preferred embodiment of the present application, excluding the main body;

[0028] Fig.12 A test parameter table of a 5-75V voltage regulation system disclosed in a preferred embodiment of the present application;

[0029] Explanation of the numbers in the figure: 1. Display screen; 2. Connection port; 3. Switch; 4. Module connection. DETAILED DESCRIPTION

[0030] refer to Figure 1-12 , a technical solution proposed.

[0031] like Figure 1 As shown, the voltage regulation system includes a display screen module and a buck-boost module, the display screen module includes a display screen 1 capable of displaying voltage and current, the connection port 2 behind the display screen 1 is connected through P3 and P4 in the module connection 4 of the buck-boost module, P3 is an optional digital display ammeter, P4 is an optional digital display voltmeter, and the switch 3 of the display screen module is connected to the EN switch of the buck-boost module;

[0032] like Figure 6As shown, long press switch 3 for three seconds to enter the voltage adjustment state of the buck-boost module. In this application, the display screen module adopts the MCU minimum system, which consists of three major parts: MCU, clock, and power supply. The MCU itself has built-in flash and RAM or SRAM, such as Figure 3 As shown, pins 14, 15, 16, 17, 22 and 23 of the MCU minimum system are all connected to the ADC data conversion chip to form an ADC acquisition port. Figure 8 As shown, the analog signal is converted into a digital signal, and pins 20 and 21 are connected to the digital-to-analog converter to form a DAC output port. Fig. 9 As shown, the digital signal is converted into an analog signal. Pin 28 is the No. 1 start pin, which is connected to the No. 20 resistor and then grounded. Pins 55, 56 and 57 are key password pins. Pin 58 SCL and pin 59 SDA are both signal lines of the I2C bus. SDA jumps from a high level to a low level during the high level period of SCL, and SDA jumps from a low level to a high level during the high level period of SCL.

[0033] like Figure 3 As shown, pin 61, pin 62, pin 29, pin 30, pin 33, pin 34, pin 35 and pin 36 are respectively connected in series with resistor No. 7, resistor No. 8, resistor No. 9, resistor No. 10, resistor No. 16, resistor No. 17, resistor No. 18 and resistor No. 19, and the resistance value of the above resistors is 200 ohms. Figure 5 As shown, the above resistors are respectively connected to the digital tubes DIG_A, B, C, D, E, F, G and the decimal point SM_DP, the common pin of the above digital tubes is the anode, pin 8, pin 9, pin 10, pin 11, pin 24, pin 25, pin 37 and pin 38 are respectively connected to the current feedback pin DIG_CS in the digital tube, and pin 31, pin 47, pin 63, pin 18 and pin 12 are the circuit common ground terminal voltage VSS;

[0034] like Figure 3 As shown, pin 1, pin 32, pin 48, pin 64, pin 19 and pin 13 together constitute a 3.3V power supply circuit. The 3.3V power supply circuit diagram is as follows Figure 4 As shown, the maximum input voltage of the circuit is 18V, the maximum current is 1000mA, pin 1VEAT is connected to other battery power supplies, pins 32, 48, 64, and 19VDD refer to digital working voltages, which are used to supply power to the chip, and pin 13VDDA is an analog voltage, which is used to supply power to the chip.

[0035] like Figure 3As shown, pin 7 is NRST, which is an asynchronous reset pin. Pin 7 is connected to resistor No. 22 and capacitor No. 13 respectively. Resistor No. 22 is connected to a 3.3 volt voltage, and capacitor No. 13 is grounded. Pin 60 is start pin No. 0. Pin 60 is connected to resistor No. 21, and resistor No. 21 is connected to resistor No. 13. Pin 5 is OSC IN pin, which is the input pin of an external high-speed crystal oscillator. Pin 6 is OSC OUT, which is the input pin of an external high-speed crystal oscillator. These pins are used to connect an external crystal oscillator to provide an accurate clock signal to the microcontroller. The OSC IN pin receives the clock signal input of the external crystal oscillator, and the OSC OUT pin outputs the signal amplified by the oscillator. These two pins are connected to resistor No. 23, crystal oscillator No. 1, capacitor No. 15 and capacitor No. 16 and then grounded to establish a stable oscillation loop.

[0036] like Figure 3 As shown, pin 46 is SWDIO, which is the single-wire debug interface data line, used to transmit debug information and program data, and pin 49 is SWCLK, which is the single-wire debug interface clock line, used to synchronize data transmission. These two pins are used together to form the STM32 burning port in the network, and pin 50 is the low-level effective shutdown pin SS_OFF.

[0037] like Figure 3 As shown, pin 42 is GD_TX_232, the RS232 level sending serial port, pin 43 is GD_RX_232, the RS232 level receiving port, pin 43 and pin 42 are grounded to form a serial port, pin 44 is RUN, used to input the running signal, and RS232 level refers to the voltage level used in the RS232 serial communication interface. According to the RS232 standard, logic "1" is represented by a negative level, usually between -3V and -25V, while logic "0" is represented by a positive level, usually between +3V and +25V. This asymmetric level representation method enables RS232 to communicate reliably over long distances and in noisy environments.

[0038] like Figure 7 As shown, the EPROM non-volatile memory uses AT24C08 to provide 8192 bits of serial electrically erasable programmable read-only memory, pins 1-3 are A0-A2, used for location input, pin 4 is GND, used for grounding, pins 1-4 are connected to ground and connected to capacitor No. 14, pin 5 is SDA, used for serial data and location line, and connected to resistor No. 24, pin 6 is SCL, used for serial clock line, and connected to capacitor No. 25, pin 7 is WP, used to prohibit write protection at low level and high level write protection at WP, pin 8 is VCC power supply, pin 7 and pin 8 are connected to subsequent resistor No. 24 and resistor No. 25, together forming an EPROM storage circuit.

[0039] like Fig.12 As shown in Figure 1, the buck-boost module uses a non-isolated four-switch synchronous buck_boost chip. Fig.10 and 11 As shown, chip pin 36 is CSNIN, pin 37 is CSPIN, pin 38 is VIN, pin 4 is SHDN, SHDN is the enable terminal, the chip will not start if it is lower than 1.23v, pin 8 is FBIN, FBIN lower than 1.2v will reduce vc and reduce input current, pin 1 is INTVCC, connected to capacitor No. 57, pin 18 is GATEVCC, connected to capacitor No. 56 ground, pin 34 is CSPOUT, for chip size packaging, pin 32 is CSNOUT, pin 9 is FBOUT, pin 13 is CLKOUT, pin 30 is E XTVCC, pin 2 is MODE, pin 2 is connected to resistor No. 67, resistor No. 67 is connected to GATEVCC, one of three working modes can be selected; R67: constant discontinuous mode; R15: forced continuous mode; without R67, R15: skip cycle burst mode; pin 7 is LDO3.3, connected in series with capacitor No. 58, pin 12 is SS, connected in series with capacitor No. 59, pin 14 is SYNC, pin 16 is AGND, pin 15 is RT, connected in series with resistor No. 47, pin 3 is IMONIN, connected in parallel with resistor No. 71 and capacitor No. 64, pin 10 is IMONOUT, Connected in series with resistor No. 70 and resistor No. 75, resistor No. 70 and resistor No. 75 are connected to capacitor No. 61, pin 11 is VC, connected in series with capacitor No. 62, capacitor No. 62 is connected in parallel with resistor No. 50 and capacitor No. 63 in series, pin 39 is PGND grounding, pin 26 is TG1 transmission gate 1, pin 28 is connected to BOOST1 boost circuit 1, pin 24 is SW1 switch 1, pin 17 is BG1 isolation switch 1, pin 6 is CSP chip size package, pin 5 is CSN, pin 6 is connected to capacitor No. 15 and then grounded, pin 5 is connected to capacitor No. 14 and then grounded, pin 19 is BG2, pin 22 is SW2 switch 1, pin 20 is connected to BOOST2 boost circuit 2, pin 20 is connected in series with capacitor No. 13 and then in parallel with pin 22, pin 21 is TG2 transmission gate 2, pin 21 is connected in series with resistor No. 83 and in parallel with diode No. 11, with f=43750 / Rt-1, Rout=1208 / (Iin*RS1), Rous=1208 / (lout*R33), the fault current point is 1.33 times the current limiting point, the protection in the buck-boost module includes input undervoltage protection, output current and voltage protection, overtemperature protection, short circuit protection self-recovery.

[0040] After long pressing switch 3 for three seconds, it enters the voltage adjustment state, and display 1 flashes slowly. Press switch 3 to switch the voltage. Each time it is pressed, the voltage switches from low to high by one level, and switches cyclically. After selecting the voltage, long press switch 3 for three seconds to lock this voltage. At this time, the output port can start working. To adjust the output voltage again, when the load is connected, you need to disconnect the load first, then long press the switch for 3s to enter the voltage adjustment state, and repeat the above operation.

[0041] Although examples of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 5-75V voltage regulation system, characterized in that: include: Display screen module and buck-boost module; A display screen (1) for displaying voltage and current is arranged on the outside of the display screen module, and a connection port (2) is arranged on the back of the display screen module, and the connection port (2) is connected to a module connection point (4) of the buck-boost module; Any voltage within the range of DC10-75V is connected to the input end of the buck-boost module, and the buck-boost module converts the original input voltage into a common voltage output to provide power for devices with the same voltage. The required voltage is adjusted by pressing the switch (3), so that the output voltage is in the common voltage range.

2. A 5-75V voltage regulation system according to claim 1, characterized in that: The buck-boost module consists of RX1 input undervoltage regulation, RX2 input tracking voltage regulation, RX3 input current regulation, RX4 output voltage regulation, RX5 output current regulation, VIN+ power input positive pole, GND power input and output negative pole, VO+ power output positive pole, P1 power enable control interface, P2 temperature control fan 12V / 0.3 power supply interface, P3 optional digital display ammeter, P4 optional digital display voltmeter, P5-1 signal GND for control, P5-2 welding port for output current control, P5-3 welding port for output voltage control, P5-4 welding port for input current control, and P5-5 welding port for input tracking voltage control.

3. A 5-75V voltage regulation system according to claim 1, characterized in that: A switch (3) is arranged on the outside of the display screen module, and the switch (3) can be pressed for three seconds to enter the voltage adjustment state of the buck-boost module.

4. A 5-75V voltage regulation system according to claim 1, characterized in that: The buck-boost module adopts a non-isolated four-switch synchronous buck_boost chip.

5. A 5-75V voltage regulation system according to claim 1, characterized in that: The display screen module uses an MCU minimum system inside, and the internal power supply circuit of the MCU minimum system is a 3.3V power supply circuit. The maximum input voltage of the 3.3V power supply circuit is 18V, and the maximum current is 1000mA.

6. A 5-75V voltage regulation system according to claim 1, characterized in that: The buck-boost module is provided with an EPROM storage circuit, and the EPROM storage circuit is used for strictly prohibiting write protection when WP is at a low level and for write protection when WP is at a high level.

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