CN116088625A - Output voltage regulating circuit - Google Patents
Output voltage regulating circuit Download PDFInfo
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- CN116088625A CN116088625A CN202310363136.8A CN202310363136A CN116088625A CN 116088625 A CN116088625 A CN 116088625A CN 202310363136 A CN202310363136 A CN 202310363136A CN 116088625 A CN116088625 A CN 116088625A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
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Abstract
The invention discloses an output voltage regulating circuit, which relates to the field of voltage conversion, and comprises: the power supply module is used for supplying direct-current voltage and outputting the direct-current voltage to the voltage supply module; the voltage supply module is used for receiving the control of the switch control module and adjusting the voltage output to the voltage stabilizing and adjusting module; the switch control module is used for controlling the output voltage of the voltage supply module and the voltage stabilizer of the switch control module access circuit; the beneficial effects of the invention are as follows: the switching control module is arranged to control the output voltage of the voltage supply module and the voltage stabilizer corresponding to the voltage stabilizing and regulating module to acquire the required voltage, and only a single voltage stabilizer and a control circuit work at the same time, so that unnecessary electric energy is avoided from being consumed by the simultaneous work of a plurality of voltage stabilizers; the output judging module is arranged for detecting whether the output voltage of the voltage supply module corresponds to the output voltage of the voltage following module or not, and avoiding that abnormal voltage is supplied to the load due to faults such as short circuit, relay abnormality and the like.
Description
Technical Field
The invention relates to the field of voltage conversion, in particular to an output voltage regulating circuit.
Background
The existing components and chips are powered on at 12V, 5V, 3.3V and other power supply voltages, the input voltage outputs 12V voltage through a 12V voltage stabilizer to supply power to the components and chips, meanwhile, the 12V voltage is used as the input voltage of the 5V voltage stabilizer, the 5V voltage is output to supply power to another batch of components and chips, meanwhile, the 5V voltage is used as the input voltage of the 3.3V voltage stabilizer, and the 3.3V voltage is output to supply power to other components and chips. When the laboratory tests, a plurality of voltage regulators generally work at the same time, and a plurality of direct currents are kept for power supply, so that the laboratory is convenient to use.
The disadvantage is that multiple voltages of 12V, 5V, 3.3V, etc. supply power simultaneously, and there is unnecessary power loss for the voltage stabilizer that does not need to be used, and improvement is needed.
Disclosure of Invention
The present invention is directed to an output voltage adjusting circuit for solving the above-mentioned problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an output voltage regulation circuit comprising:
the power supply module is used for supplying direct-current voltage and outputting the direct-current voltage to the voltage supply module;
the voltage supply module is used for receiving the control of the switch control module and adjusting the voltage output to the voltage stabilizing and adjusting module;
the switch control module is used for controlling the output voltage of the voltage supply module and the voltage stabilizer of the switch control module access circuit;
the voltage stabilizing and regulating module is used for receiving the control of the switch control module, selecting a voltage stabilizer matched with the voltage of the voltage supply module and outputting a stable voltage to the voltage following module;
the voltage follower module is used for outputting the same voltage as the voltage stabilizing and adjusting module and supplying the voltage to the voltage output module, and isolating the voltage stabilizing and adjusting module from the voltage output module;
the output judging module is used for judging whether the circuit is abnormal or not according to the output voltage of the voltage supply module and the output voltage of the voltage following module, and disconnecting the voltage output module when the circuit is abnormal;
the voltage output module is used for supplying power to the load when being conducted;
the output end of the power supply module is connected with the first input end of the voltage supply module, the output end of the voltage supply module is connected with the first input end of the voltage stabilizing adjustment module and the first input end of the output judgment module, the output end of the switch control module is connected with the second input end of the voltage supply module and the second input end of the voltage stabilizing adjustment module, the output end of the voltage stabilizing adjustment module is connected with the input end of the voltage following module, the output end of the voltage following module is connected with the first input end of the voltage output module and the second input end of the output judgment module, and the output end of the output judgment module is connected with the second input end of the voltage output module.
As still further aspects of the invention: the voltage supply module comprises a first capacitor, a first resistor and a first MOS tube, one end of the first capacitor is connected with one end of the first resistor and the output end of the power supply module, the other end of the first capacitor is grounded, the other end of the first resistor is connected with the D pole of the first MOS tube, the G pole of the first MOS tube is connected with the output end of the switch control module, and the S pole of the first MOS tube is connected with the first input end of the voltage stabilizing adjustment module.
As still further aspects of the invention: the switch control module comprises a third switch, a suspension interface, a plurality of wiring interfaces and a plurality of switch control circuits corresponding to the wiring interfaces, one end of the third switch is connected with the second input end of the voltage supply module, the other end of the third switch is connected with the suspension interface or the wiring interface, the suspension interface is suspended, and the wiring interface is connected with the switch control circuits; the switch control circuit comprises a first diode, a first relay and a first control signal, wherein the first control signal is connected with the cathode of the first diode and one end of the first relay, and the anode of the first diode is connected with the other end of the first relay and a wiring interface.
As still further aspects of the invention: the voltage stabilizing and regulating module comprises a plurality of voltage stabilizing and regulating circuits, the voltage stabilizing and regulating circuits correspond to the switch control circuits, the voltage stabilizing and regulating circuits comprise a first switch, a second capacitor, a first voltage stabilizer, a third capacitor and a third diode, one end of the first switch is connected with the output end of the voltage supply module, the other end of the first switch is connected with one end of the second capacitor and the input end of the first voltage stabilizer, the other end of the second capacitor is grounded, the grounding of the first voltage stabilizer is grounded, the output end of the first voltage stabilizer is connected with one end of the third capacitor and the positive electrode of the third diode, the other end of the third capacitor is grounded, and the negative electrode of the third diode is connected with the input end of the voltage following module.
As still further aspects of the invention: the voltage following module comprises a sixth capacitor, a second resistor, a third amplifier, a seventh capacitor and a third resistor, wherein the in-phase end of the third amplifier is connected with one end of the sixth capacitor, one end of the second resistor and the output end of the voltage stabilizing and adjusting module, the other end of the sixth capacitor is grounded, the other end of the second resistor is grounded, the inverting end of the third amplifier is connected with the output end of the third amplifier, one end of the seventh capacitor, one end of the third resistor and the first input end of the output judging module, the other end of the seventh capacitor is grounded, and the other end of the third resistor is grounded.
As still further aspects of the invention: the output judging module comprises a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor and a fourth amplifier, wherein one end of the fourth resistor is connected with the output end of the voltage supply module, one end of the sixth resistor is connected with the output end of the voltage following module, the other end of the fourth resistor is connected with one end of the fifth resistor and the same-phase end of the fourth amplifier, the other end of the sixth resistor is connected with one end of the seventh resistor and the opposite-phase end of the fourth amplifier, the other end of the fifth resistor is grounded, the other end of the seventh resistor is grounded, and the output end of the fourth amplifier is connected with the second input end of the voltage output module.
As still further aspects of the invention: the voltage output module comprises a second MOS tube, a fifth diode and an eighth resistor, wherein the D electrode of the second MOS tube is connected with the output end of the voltage following module, the G electrode of the second MOS tube is connected with the output end of the output judging module, the S electrode of the second MOS tube is connected with the positive electrode of the fifth diode, the negative electrode of the fifth diode is connected with one end of the eighth resistor, the other end of the eighth resistor is grounded, and the S electrode output voltage of the second MOS tube is supplied to a load.
Compared with the prior art, the invention has the beneficial effects that: the invention is provided with a switch control module, controls the output voltage of the voltage supply module and the voltage stabilizer corresponding to the voltage stabilizing and regulating module to acquire the required voltage, and only a single voltage stabilizer and a control circuit work at the same time, thereby avoiding unnecessary electric energy loss caused by the simultaneous work of a plurality of voltage stabilizers; the output judging module is arranged for detecting whether the output voltage of the voltage supply module corresponds to the output voltage of the voltage following module or not, and avoiding that abnormal voltage is supplied to the load due to faults such as short circuit, relay abnormality and the like.
Drawings
Fig. 1 is a schematic diagram of an output voltage regulation circuit.
Fig. 2 is a partial circuit diagram of an output voltage regulating circuit.
Fig. 3 is a circuit diagram of the switch control module.
Fig. 4 is a circuit diagram of the output judging module.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Referring to fig. 1, an output voltage adjusting circuit includes:
a power supply module 1 for supplying a dc voltage and outputting the dc voltage to a voltage supply module 2;
the voltage supply module 2 is used for receiving the control of the switch control module 3 and adjusting the voltage output to the voltage stabilizing adjustment module 4;
the switch control module 3 is used for controlling the output voltage of the voltage supply module 2 and the voltage stabilizer of the access circuit of the switch control module 3;
the voltage stabilizing and regulating module 4 is used for receiving the control of the switch control module 3, selecting a voltage stabilizer matched with the voltage of the voltage supply module 2, and outputting a stable voltage to the voltage following module 5;
the voltage following module 5 is used for outputting the same voltage as the voltage stabilizing and adjusting module 4 and supplying the voltage to the voltage output module 7, and isolating the voltage stabilizing and adjusting module 4 from the voltage output module 7;
an output judging module 6 for judging whether the circuit is abnormal or not according to the output voltage of the voltage supply module 2 and the output voltage of the voltage following module 5, and disconnecting the voltage output module 7 when the circuit is abnormal;
the voltage output module 7 is used for supplying power to the load when being conducted;
the output end of the power supply module 1 is connected with the first input end of the voltage supply module 2, the output end of the voltage supply module 2 is connected with the first input end of the voltage regulation module 4 and the first input end of the output judgment module 6, the output end of the switch control module 3 is connected with the second input end of the voltage supply module 2 and the second input end of the voltage regulation module 4, the output end of the voltage regulation module 4 is connected with the input end of the voltage following module 5, the output end of the voltage following module 5 is connected with the first input end of the voltage output module 7 and the second input end of the output judgment module 6, and the output end of the output judgment module 6 is connected with the second input end of the voltage output module 7.
In this embodiment: referring to fig. 2, the voltage supply module 2 includes a first capacitor C1, a first resistor R1, and a first MOS transistor V1, wherein one end of the first capacitor C1 is connected to one end of the first resistor R1 and an output end of the power supply module 1, the other end of the first capacitor C1 is grounded, the other end of the first resistor R1 is connected to a D pole of the first MOS transistor V1, a G pole of the first MOS transistor V1 is connected to an output end of the switch control module 3, and an S pole of the first MOS transistor V1 is connected to a first input end of the voltage stabilizing adjustment module 4.
The direct-current voltage output by the power supply module 1 is output to a subsequent circuit through a first resistor R1 and a first MOS tube V1, and the first MOS tube V1 is connected with the switch control module 3 through a common point D.
In another embodiment, the first resistor R1 may be omitted, where the first resistor R1 is used for current limiting, to prevent excessive current.
In this embodiment: referring to fig. 2 and 3, the voltage regulation module 4 includes a plurality of voltage regulation circuits, the voltage regulation circuits correspond to the switch control circuits, the voltage regulation circuits include a first switch S1, a second capacitor C2, a first voltage regulator U1, a third capacitor C3, and a third diode D3, one end of the first switch S1 is connected to the output end of the voltage supply module 2, the other end of the first switch S1 is connected to one end of the second capacitor C2 and the input end of the first voltage regulator U1, the other end of the second capacitor C2 is grounded, the ground of the first voltage regulator U1 is grounded, the output end of the first voltage regulator U1 is connected to one end of the third capacitor C3 and the positive electrode of the third diode D3, the other end of the third capacitor C3 is grounded, and the negative electrode of the third diode D3 is connected to the input end of the voltage follower module 5.
The PWM control signal corresponds to a switch controlled by the relay, for example, the first voltage stabilizer U1 outputs a voltage of 5V, and the output voltage of the first MOS transistor V1 controlled by the control signal PWM1 is about 10V, so as to ensure that enough voltage satisfies the requirement of generating a voltage of 5V; the second voltage stabilizer U2 outputs 3.3V voltage, and the output voltage of the second MOS tube V2 controlled by the control signal PWM2 is about 6V, so that the input voltage of the second voltage stabilizer U2 is also met. When in actual use, according to different requirements of a user, the connection condition of the third switch S3 is controlled manually, the circuit automatically configures the input and output voltages of the required voltage stabilizer, the output voltage is conveniently regulated, and an unnecessary voltage stabilizing regulating circuit is disconnected, so that the waste of electricity is avoided.
In another embodiment: the third diode D3 may be omitted, and the third diode D3 may serve as a current limiting diode to prevent current from flowing into the output terminal of the voltage regulator.
In this embodiment: referring to fig. 2 and 3, the switch control module 3 includes a third switch S3, a suspension interface B, a plurality of connection interfaces (A, C in fig. 3), and a plurality of switch control circuits corresponding to the connection interfaces, wherein one end of the third switch S3 is connected to the second input end of the voltage supply module 2, the other end of the third switch S3 is connected to the suspension interface B or the connection interface, the suspension interface B is suspended, and the connection interfaces are connected to the switch control circuits; the switch control circuit comprises a first diode D1, a first relay J1 and a first control signal PWM1, wherein the first control signal PWM1 is connected with the negative electrode of the first diode D1 and one end of the first relay J1, and the positive electrode of the first diode D1 is connected with the other end of the first relay J1 and a wiring interface.
Each switch control circuit corresponds to different control signals, for example, as shown in fig. 3, two switch control circuits (without limiting the number of switch control circuits) are provided, two different control signals PWM1 and PWM2 are provided, the duty ratios of the two PWM signals are different, when the third switch S3 is connected to the connection interface a, the first relay J1 is powered on to control the first switch S1 to be closed, and the first voltage stabilizer U1 is powered on to output a corresponding stable voltage; the duty ratio corresponding to the output control signal PWM1 controls the conduction rate of the first MOS tube V1 and controls the output voltage of the voltage supply module 2; similarly, when the third switch S3 is connected to the connection interface C, the second switch S2 is closed, and the second voltage stabilizer U2 outputs a corresponding stable voltage; when the third switch S3 is connected to the suspension interface B, the switch control circuit is disconnected and does not work.
In another embodiment: the first diode D1 may be omitted, the first diode D1 being a freewheeling diode, and when the user switches the connection condition of the third switch S3, the first diode D1 bleeds out a large current generated at the moment when the first relay J1 is turned off.
In this embodiment: referring to fig. 2, the voltage follower module 5 includes a sixth capacitor C6, a second resistor R2, a third amplifier U3, a seventh capacitor C7, and a third resistor R3, where an in-phase end of the third amplifier U3 is connected to one end of the sixth capacitor C6, one end of the second resistor R2, and an output end of the voltage regulator module 4, another end of the sixth capacitor C6 is grounded, another end of the second resistor R2 is grounded, an inverting end of the third amplifier U3 is connected to an output end of the third amplifier U3, one end of the seventh capacitor C7, one end of the third resistor R3, and a first input end of the output determination module 6, another end of the seventh capacitor C7 is grounded, and another end of the third resistor R3 is grounded.
The third amplifier U3 is used as a follower, the input voltage of the same-phase end is larger, the output voltage of the output end is larger, the input and the output are isolated by the follower, the input impedance is improved, the capacity of the input capacitor can be greatly reduced, and the influence of fluctuation of the input end on the output end is avoided.
In another embodiment, the sixth capacitor C6 may be omitted, where the sixth capacitor C6 is used to slow down the circuit voltage fluctuation when the first voltage regulator U1 and the second voltage regulator U2 switch to operate.
In this embodiment: referring to fig. 4, the output judging module 6 includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and a fourth amplifier U4, one end of the fourth resistor R4 is connected to the output end of the voltage supply module 2, one end of the sixth resistor R6 is connected to the output end of the voltage follower module 5, the other end of the fourth resistor R4 is connected to one end of the fifth resistor R5 and the in-phase end of the fourth amplifier U4, the other end of the sixth resistor R6 is connected to one end of the seventh resistor R7 and the inverting end of the fourth amplifier U4, the other end of the fifth resistor R5 is grounded, the other end of the seventh resistor R7 is grounded, and the output end of the fourth amplifier U4 is connected to the second input end of the voltage output module 7.
For example, when the first switch S1 is controlled abnormally and the first switch S1 is still closed, the input voltage of the first voltage regulator U1 is 6V, the input voltage based on the input voltage cannot meet the input voltage requirement of the first voltage regulator U1, but the first voltage regulator U1 still outputs voltages, which may be 4V, 4.2V, etc., and the output voltages of the first voltage regulator U1 are larger than those of a chip with 3.3V of normal power, which affects the service life of the load chip, and the common point E voltage is 6V and the common point F voltage is 4V (or 4.2V); the resistance of the fourth resistor R4 and the fifth resistor R5 are compared with seven to three, so that the resistance of the same-phase end of the fourth amplifier U4 is 1.8V, the resistance of the sixth resistor R6 and the seventh resistor R7 are compared with one to one, the reverse-phase end of the fourth amplifier U4 is 1.65V under the normal condition based on 3.3V, and is 2V under the abnormal condition based on 4V. The fourth amplifier U4 is used as a comparator, that is, under normal conditions, the fourth amplifier U4 outputs a high level (connected to the voltage output module 7 through the common point G), the driving voltage output module 7 outputs a voltage normally, and under abnormal conditions, the fourth amplifier U4 outputs a low level, and the power supply loop of the voltage output module 7 is disconnected. In addition, the voltage stabilizing adjustment module 4 may have abnormal faults such as short circuit, so that the output voltage of the voltage following module 5 is larger, and the power supply loop of the voltage output module 7 is disconnected. When the voltage is abnormal, the power supply loop is disconnected in time, so that the influence of abnormal voltage on the service life of the load is avoided.
In another embodiment: the output end of the fourth amplifier U4 can be provided with a light emitting diode, and whether the circuit is in fault is judged by whether the light emitting diode emits light or not.
In this embodiment: referring to fig. 2, the voltage output module 7 includes a second MOS transistor V2, a fifth diode D5, and an eighth resistor R8, wherein a D pole of the second MOS transistor V2 is connected to an output end of the voltage follower module 5, a G pole of the second MOS transistor V2 is connected to an output end of the output judging module 6, an S pole of the second MOS transistor V2 is connected to an anode of the fifth diode D5, a cathode of the fifth diode D5 is connected to one end of the eighth resistor R8, the other end of the eighth resistor R8 is grounded, and an S pole output voltage of the second MOS transistor V2 is supplied to a load.
The second MOS tube V2 is an NMOS tube, when G of the second MOS tube V2 is in a very high level, the output voltage VOUT is conducted, and when G is in a very low level, the second MOS tube V2 is disconnected. The fifth diode D5 serves as a light emitting diode indicating whether or not power is supplied.
In another embodiment: the fifth diode D5 may be directly connected between the second MOS transistor V2 and the load, which has a disadvantage in that the fifth diode D5 has a voltage drop, which reduces the voltage output to the load.
The working principle of the invention is as follows: the power supply module 1 supplies direct current voltage and outputs the direct current voltage to the voltage supply module 2; the voltage supply module 2 receives the control of the switch control module 3 and adjusts the voltage output to the voltage stabilizing adjustment module 4; the switch control module 3 controls the output voltage of the voltage supply module 2 and the voltage stabilizer of the switch control module 3 access circuit; the voltage stabilizing and regulating module 4 receives the control of the switch control module 3, selects a voltage stabilizer matched with the voltage of the voltage supply module 2, and outputs a stable voltage to the voltage following module 5; the voltage following module 5 outputs the same voltage as the voltage stabilizing and regulating module 4 and supplies the voltage to the voltage output module 7, and the voltage stabilizing and regulating module 4 and the voltage output module 7 are isolated; the output judging module 6 judges whether the circuit is abnormal or not according to the output voltage of the voltage supply module 2 and the output voltage of the voltage following module 5, and the voltage output module 7 is disconnected when the circuit is abnormal; the voltage output module 7 supplies power to the load when turned on.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. An output voltage regulating circuit, characterized in that:
the output voltage adjusting circuit includes:
the power supply module is used for supplying direct-current voltage and outputting the direct-current voltage to the voltage supply module;
the voltage supply module is used for receiving the control of the switch control module and adjusting the voltage output to the voltage stabilizing and adjusting module;
the switch control module is used for controlling the output voltage of the voltage supply module and the voltage stabilizer of the switch control module access circuit;
the voltage stabilizing and regulating module is used for receiving the control of the switch control module, selecting a voltage stabilizer matched with the voltage of the voltage supply module and outputting a stable voltage to the voltage following module;
the voltage follower module is used for outputting the same voltage as the voltage stabilizing and adjusting module and supplying the voltage to the voltage output module, and isolating the voltage stabilizing and adjusting module from the voltage output module;
the output judging module is used for judging whether the circuit is abnormal or not according to the output voltage of the voltage supply module and the output voltage of the voltage following module, and disconnecting the voltage output module when the circuit is abnormal;
the voltage output module is used for supplying power to the load when being conducted;
the output end of the power supply module is connected with the first input end of the voltage supply module, the output end of the voltage supply module is connected with the first input end of the voltage stabilizing adjustment module and the first input end of the output judgment module, the output end of the switch control module is connected with the second input end of the voltage supply module and the second input end of the voltage stabilizing adjustment module, the output end of the voltage stabilizing adjustment module is connected with the input end of the voltage following module, the output end of the voltage following module is connected with the first input end of the voltage output module and the second input end of the output judgment module, and the output end of the output judgment module is connected with the second input end of the voltage output module.
2. The output voltage adjusting circuit as claimed in claim 1, wherein the voltage supply module comprises a first capacitor, a first resistor and a first MOS tube, one end of the first capacitor is connected with one end of the first resistor and the output end of the power supply module, the other end of the first capacitor is grounded, the other end of the first resistor is connected with the D pole of the first MOS tube, the G pole of the first MOS tube is connected with the output end of the switch control module, and the S pole of the first MOS tube is connected with the first input end of the voltage stabilizing adjusting module.
3. The output voltage regulating circuit according to claim 1 or 2, wherein the switch control module comprises a third switch, a suspension interface, a plurality of wiring interfaces, and a plurality of switch control circuits corresponding to the wiring interfaces, one end of the third switch is connected with the second input end of the voltage supply module, the other end of the third switch is connected with the suspension interface or the wiring interface, the suspension interface is suspended, and the wiring interface is connected with the switch control circuit; the switch control circuit comprises a first diode, a first relay and a first control signal, wherein the first control signal is connected with the cathode of the first diode and one end of the first relay, and the anode of the first diode is connected with the other end of the first relay and a wiring interface.
4. The output voltage regulating circuit according to claim 3, wherein the voltage regulating module comprises a plurality of voltage regulating circuits, the voltage regulating circuits correspond to the switch control circuits, the voltage regulating circuits comprise a first switch, a second capacitor, a first voltage regulator, a third capacitor and a third diode, one end of the first switch is connected with the output end of the voltage supply module, the other end of the first switch is connected with one end of the second capacitor and the input end of the first voltage regulator, the other end of the second capacitor is grounded, the ground of the first voltage regulator is grounded, the output end of the first voltage regulator is connected with one end of the third capacitor and the positive electrode of the third diode, the other end of the third capacitor is grounded, and the negative electrode of the third diode is connected with the input end of the voltage following module.
5. The output voltage adjusting circuit of claim 1, wherein the voltage follower module comprises a sixth capacitor, a second resistor, a third amplifier, a seventh capacitor, and a third resistor, the in-phase end of the third amplifier is connected to one end of the sixth capacitor, one end of the second resistor, and the output end of the voltage stabilizing adjusting module, the other end of the sixth capacitor is grounded, the other end of the second resistor is grounded, the inverting end of the third amplifier is connected to the output end of the third amplifier, one end of the seventh capacitor, one end of the third resistor, the first input end of the output judging module, the other end of the seventh capacitor is grounded, and the other end of the third resistor is grounded.
6. The output voltage adjusting circuit as claimed in claim 1, wherein the output judging module comprises a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor and a fourth amplifier, one end of the fourth resistor is connected with the output end of the voltage supply module, one end of the sixth resistor is connected with the output end of the voltage following module, the other end of the fourth resistor is connected with one end of the fifth resistor and the same-phase end of the fourth amplifier, the other end of the sixth resistor is connected with one end of the seventh resistor and the opposite-phase end of the fourth amplifier, the other end of the fifth resistor is grounded, the other end of the seventh resistor is grounded, and the output end of the fourth amplifier is connected with the second input end of the voltage output module.
7. The output voltage adjusting circuit as claimed in claim 1, wherein the voltage output module comprises a second MOS transistor, a fifth diode, and an eighth resistor, a D pole of the second MOS transistor is connected to an output terminal of the voltage follower module, a G pole of the second MOS transistor is connected to an output terminal of the output judging module, an S pole of the second MOS transistor is connected to an anode of the fifth diode, a cathode of the fifth diode is connected to one end of the eighth resistor, another end of the eighth resistor is grounded, and an S pole of the second MOS transistor outputs a voltage to the load.
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| CN202310363136.8A CN116088625B (en) | 2023-04-07 | 2023-04-07 | Output voltage regulating circuit |
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| CN202310363136.8A CN116088625B (en) | 2023-04-07 | 2023-04-07 | Output voltage regulating circuit |
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| CN218335776U (en) * | 2022-05-28 | 2023-01-17 | 山东博科生物产业有限公司 | Workstation power supply circuit is exempted from to enzyme |
| CN218449887U (en) * | 2022-10-20 | 2023-02-03 | 深圳市安托山技术有限公司 | Vehicle-mounted power supply conversion circuit |
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2023
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| CN209642544U (en) * | 2019-04-04 | 2019-11-15 | 武汉轻工大学 | A kind of low-loss multivoltage boot-strap circuit with delay protection function |
| CN218335776U (en) * | 2022-05-28 | 2023-01-17 | 山东博科生物产业有限公司 | Workstation power supply circuit is exempted from to enzyme |
| CN218449887U (en) * | 2022-10-20 | 2023-02-03 | 深圳市安托山技术有限公司 | Vehicle-mounted power supply conversion circuit |
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| CN116088625B (en) | 2023-06-13 |
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