CN218450626U - Voltage drop compensation circuit, voltage drop compensation device and electronic equipment - Google Patents
Voltage drop compensation circuit, voltage drop compensation device and electronic equipment Download PDFInfo
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- CN218450626U CN218450626U CN202220769461.5U CN202220769461U CN218450626U CN 218450626 U CN218450626 U CN 218450626U CN 202220769461 U CN202220769461 U CN 202220769461U CN 218450626 U CN218450626 U CN 218450626U
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Abstract
The application discloses voltage drop compensation circuit, voltage drop compensation device and electronic equipment, this voltage drop compensation circuit includes: the first voltage conversion circuit comprises a first control sub-circuit, a first switch sub-circuit and a first energy storage sub-circuit, wherein the first switch sub-circuit receives a first control signal sent by the first control sub-circuit so as to change the on-off state of the first control signal, so that the first power supply charges and discharges the first energy storage sub-circuit, and a second power supply is correspondingly output to a load through the first energy storage sub-circuit; and the first voltage feedback circuit feeds back a second power supply correspondingly output by the first energy storage sub-circuit to the first control sub-circuit so that the first control sub-circuit correspondingly adjusts the first control signal and further adjusts the charging and discharging state of the first power supply on the first energy storage sub-circuit so as to adjust the second power supply. Through the mode, the voltage drop compensation circuit can effectively reduce the potential safety hazard of load power supply, reduces extra power loss and is lower in implementation cost.
Description
Technical Field
The application relates to the technical field of load power supply, in particular to a voltage drop compensation circuit, a voltage drop compensation device and electronic equipment.
Background
Nowadays, with the advent of the internet of things era, the functions of various electronic devices are more and more abundant, the quality requirements of the market on the electronic devices are higher and higher, and how to ensure that each power load in the electronic devices can maintain a stable and good working state is an important factor.
For example, with the gradual popularization of intelligent lighting, people have higher and higher requirements on the quality of light colors, and a wall square lamp capable of being spliced is produced. The product generally comprises a power supply and a plurality of spliced lamp bodies, and the power supply can correspondingly output stable direct-current voltage so as to enable the load lamp bodies to work. However, when the load lamp bodies need to be spliced in a larger number or the power demand of the load lamp bodies is increased, the voltage value of the power supply correspondingly output to each load lamp body is gradually reduced away from the power supply due to the existence of the internal resistance on the transmission line connecting each load lamp body. Especially, when the load demands more power, the magnitude of the output voltage drop is larger, and the lamp body can not work normally due to the excessive voltage drop.
Generally, the existing improvement method is to use a power supply with higher output voltage and perform voltage reduction on each lamp body separately, so as to ensure the normal operation of each lamp body. However, the requirement of the above improvement method on the power supply is also higher, a higher output voltage has a higher potential safety hazard, and the requirement on the withstand voltage of the power supply components is also higher, and each lamp body needs to be added with a voltage reduction circuit, which will generate more extra power loss, and the implementation cost is also higher.
SUMMERY OF THE UTILITY MODEL
The application provides a voltage drop compensating circuit, voltage drop compensating device and electronic equipment, this voltage drop compensating circuit can solve among the prior art load of a plurality of series connections when needs supply power, need have higher output voltage's power supply usually, and higher output voltage will have higher potential safety hazard, it is also higher to the withstand voltage requirement of power components and parts simultaneously, and can produce more extra power losses, realize the cost problem that also higher simultaneously.
In order to solve the technical problem, the application adopts a technical scheme that: provided is a voltage drop compensation circuit, wherein the voltage drop compensation circuit includes: the first voltage conversion circuit comprises a first control sub-circuit, a first switch sub-circuit and a first energy storage sub-circuit, the first switch sub-circuit is coupled with a first power supply, the first control sub-circuit and the first energy storage sub-circuit, the first energy storage sub-circuit is coupled with an external load, and the first switch sub-circuit receives a first control signal sent by the first control sub-circuit to change the on-off state of the first control signal, so that the first power supply charges and discharges the first energy storage sub-circuit, and a second power supply is correspondingly output to the load through the first energy storage sub-circuit; the first voltage feedback circuit is coupled with the first control sub-circuit and the first energy storage sub-circuit to sample the second power supply correspondingly output by the first energy storage sub-circuit and feed back the second power supply to the first control sub-circuit, so that the first control sub-circuit correspondingly adjusts the first control signal to adjust the on-off state of the first switch sub-circuit, and further adjust the charging and discharging state of the first power supply on the first energy storage sub-circuit to adjust the second power supply.
The voltage drop compensation circuit further comprises an input protection circuit, the input protection circuit is coupled with an external third power supply and the first switch sub-circuit, and the input protection circuit regulates the voltage of the third power supply into the first power supply so as to output the first power supply to the first switch sub-circuit.
The voltage drop compensation circuit further comprises an input protection circuit, a second voltage conversion circuit and a second voltage feedback circuit, wherein the second voltage conversion circuit comprises a second control sub-circuit, a second switch sub-circuit and a second energy storage sub-circuit, the input protection circuit is coupled with an external third power supply and the second switch sub-circuit, the second switch sub-circuit is coupled with the second control sub-circuit and the second energy storage sub-circuit, the second energy storage sub-circuit is coupled with the first switch sub-circuit, the input protection circuit regulates the third power supply into a fourth power supply in a voltage stabilizing mode to output the fourth power supply to the second switch sub-circuit, so that the second switch sub-circuit changes the state of the second switch sub-circuit when receiving a second control signal sent by the first control sub-circuit, the fourth power supply charges and discharges the second energy storage sub-circuit, and the second energy storage sub-circuit correspondingly outputs the first power supply to the first switch sub-circuit through the second energy storage sub-circuit; and the second voltage feedback circuit is coupled with the second control sub-circuit and the second energy storage sub-circuit so as to sample the first power supply correspondingly output by the second energy storage sub-circuit and feed back the first power supply to the second control sub-circuit, so that the second control sub-circuit correspondingly adjusts a second control signal so as to adjust the on-off state of the second switch sub-circuit, and then adjusts the charging and discharging state of the fourth power supply to the second energy storage sub-circuit so as to adjust the first power supply.
The input protection circuit comprises a first switching tube, a first capacitor, a first resistor and a second capacitor, wherein the first end of the first switching tube is coupled with the first end of a third power supply and the first end of the first capacitor, the third end of the first switching tube is coupled with the second end of the first capacitor and the first end of the first resistor, and the second end of the first switching tube is coupled with the first end of the second capacitor and the second control sub-circuit to form the first end of a fourth power supply; the second end of the first resistor is coupled to the second end of the third power supply, the second end of the second capacitor and the second control sub-circuit to form the second end of the fourth power supply.
The second energy storage sub-circuit comprises a first inductor and a fifth capacitor; the first end of the second control sub-circuit is coupled to the third end of the first switching tube, the first end of the second capacitor, the first end of the second resistor and the first end of the second switching tube, the second end of the second control sub-circuit is coupled to the second end of the second resistor, the third end of the second control sub-circuit is coupled to the first end of the third capacitor, the fourth end of the second control sub-circuit is coupled to the third end of the second switching tube, the fifth end of the second control sub-circuit is coupled to the second end of the second switching tube, the first end of the third switching tube, the first end of the fifth resistor and the first end of the first inductor, the sixth end of the second control sub-circuit is coupled to the third end of the third switching tube, the seventh end of the second control sub-circuit is coupled to the second voltage feedback circuit, the eighth end of the second control sub-circuit is coupled to the second end of the third power supply, the second end of the first resistor, the second end of the second capacitor, the first end of the third resistor, the first end of the fourth resistor, the second end of the third switching tube, the second end of the second control sub-circuit and the fifth terminal of the second capacitor are grounded; the ninth terminal of the second control sub-circuit is coupled to the second terminal of the fourth resistor, the tenth terminal of the second control sub-circuit is coupled to the second terminal of the third resistor, the second terminal of the third capacitor is coupled to the second terminal of the fifth resistor, and the second terminal of the first inductor is coupled to the second voltage feedback circuit and the second terminal of the fifth capacitor to form the first terminal of the first power supply.
The first end of the sixth resistor is coupled to the second end of the first inductor, the first end of the fourth capacitor and the second end of the fifth capacitor to form a first end of the first power supply; the second end of the sixth resistor is coupled to the first end of the seventh resistor, the eighth end of the second control sub-circuit and the second end of the fourth capacitor, and the second end of the seventh resistor is coupled to the second end of the third power supply, the second end of the first resistor, the second end of the second capacitor, the first end of the third resistor, the first end of the fourth resistor, the eighth end of the second control sub-circuit, the second end of the third switching tube and the first end of the fifth capacitor and is grounded to form the second end of the first power supply.
The first switch sub-circuit comprises a sixth capacitor, an eighth resistor, a freewheeling diode and a fourth switch tube, and the first energy storage sub-circuit comprises a second inductor and an eighth capacitor; the first end of the sixth capacitor is coupled to the first end of the first power supply, the first end of the eighth resistor, the second end of the first control sub-circuit and the first end of the second inductor, the first end of the first control sub-circuit is coupled to the second end of the eighth resistor, the third end of the first control sub-circuit is coupled to the third end of the fourth switching tube, the fourth end of the first control sub-circuit is coupled to the first voltage feedback circuit, and the fifth end of the first control sub-circuit is coupled to the second end of the first power supply, the second end of the fourth switching tube, the first voltage feedback circuit and the first end of the eighth capacitor and grounded to form the second end of the second power supply; the second end of the second inductor is coupled to the first end of the fourth switching tube and the first end of the freewheeling diode, and the second end of the freewheeling diode is coupled to the first voltage feedback circuit and the second end of the eighth capacitor to form the first end of the second power supply.
The first voltage feedback circuit comprises a ninth resistor, a tenth resistor and a seventh capacitor, wherein the first end of the ninth resistor is coupled to the second end of the freewheeling diode, the first end of the seventh capacitor and the first end of the eighth capacitor and is used as the first end of the second power supply correspondingly; the second end of the ninth resistor is coupled to the fourth end of the first control sub-circuit, the first end of the tenth resistor and the second end of the seventh capacitor, and the second end of the tenth resistor is coupled to the second end of the first power supply, the fifth end of the first control sub-circuit, the second end of the fourth switch tube, the first voltage feedback circuit and the first end of the eighth capacitor and grounded to form the second end of the second power supply.
In order to solve the above technical problem, another technical solution adopted by the present application is: providing a voltage drop compensation device, wherein the voltage drop compensation device comprises a mounting shell and a voltage drop compensation circuit connected with the mounting shell; wherein, this voltage drop compensation circuit is as any one above voltage drop compensation circuit.
In order to solve the above technical problem, the present application adopts another technical solution: the electronic equipment is provided, wherein the electronic equipment comprises a voltage drop compensation device and at least two loads which are sequentially connected in series, and the voltage drop compensation device is connected between any two adjacent loads in series; wherein the pressure drop compensating device is the pressure drop compensating device as described above.
The beneficial effect of this application is: different from the prior art, when receiving a first control signal sent by a first control sub-circuit, a first switch sub-circuit in the voltage drop compensation circuit in the application can change the on-off state of the first switch sub-circuit, so that the first power supply charges and discharges the first energy storage sub-circuit, and correspondingly outputs a second power supply to a load through the first energy storage sub-circuit, and a first voltage feedback circuit can also sample the second power supply correspondingly output by the first energy storage sub-circuit and feed back the second power supply to the first control sub-circuit, so that the first control sub-circuit correspondingly adjusts a first control signal to adjust the on-off state of the first switch sub-circuit, further adjust the charging and discharging state of the first power supply to the first energy storage sub-circuit, so as to adjust the second power supply, thereby adjusting the power supply output to the load, so as to ensure good power supply of the load, without adopting a power supply load with a higher output voltage to supply power, so as to effectively reduce the potential safety hazard of the load power supply, and further reduce the voltage withstand requirement of power supply components; and a voltage reduction circuit is not required to be additionally arranged in the load, so that the additional power loss is effectively reduced, and the cost is lower.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
FIG. 1 is a schematic structural diagram of a first embodiment of a voltage drop compensation circuit according to the present application;
FIG. 2 is a schematic structural diagram of a second embodiment of the voltage drop compensation circuit of the present application;
FIG. 3 is a schematic structural diagram of a third embodiment of the voltage drop compensation circuit of the present application;
FIG. 4 is a schematic structural diagram of a fourth embodiment of the voltage drop compensation circuit of the present application;
FIG. 5 is a schematic diagram of an embodiment of an input protection circuit, a second voltage converting circuit and a second voltage feedback circuit in the voltage drop compensation circuit of FIG. 4;
FIG. 6 is a schematic diagram of an embodiment of the first voltage converting circuit and the first voltage feedback circuit in the voltage drop compensating circuit of FIG. 4;
FIG. 7 is an exploded view of an embodiment of the pressure drop compensating device of the present application;
FIG. 8 is a schematic structural diagram of an embodiment of an electronic device of the present application;
fig. 9 is a detailed partially exploded view of the electronic device of fig. 8.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying a number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise. In the embodiments of the present application, all directional indicators (such as upper, lower, left, right, front, rear, 8230; \8230;) are used only to explain the relative positional relationship between the components at a specific posture (as shown in the drawing), the motion, etc., and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.
The present application will be described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a voltage drop compensation circuit according to a first embodiment of the present invention. In this embodiment, the voltage drop compensation circuit 10 includes: a first voltage conversion circuit 11 and a first voltage feedback circuit 12.
The voltage drop compensation circuit 10 provided in the present application is specifically configured to adjust and compensate the power voltage in the power supply of the load 102, so as to ensure the stability and the good performance of the working state of the load 102, for example, the voltage drop compensation circuit 10 can be specifically applied to the power supply for the power supply of a plurality of sequentially connected lighting lamp bodies, so as to be capable of being connected in series between the N (N is a positive integer) lamp body and the N +1 lamp body, and perform power supply compensation for the N +1 lamp body and the lamp bodies connected in series after the N +1 lamp body, so as to be capable of improving the voltage output to the N +1 lamp body, and ensure the stability of the output voltage, thereby improving the adverse effect caused by the voltage drop on the transmission line connecting in series with the plurality of lighting lamp bodies, and ensuring that the lamp bodies at different positions do not generate color difference when the plurality of lighting lamp bodies are supplied with power for a long distance. Of course, in other embodiments, the voltage drop compensation circuit 10 may also be used in any other reasonable power supply for one or at least two loads 102 connected in series in sequence, and the embodiment is not limited to this.
Specifically, the first voltage conversion circuit 11 further includes a first control sub-circuit 111, a first switch sub-circuit 112 and a first energy storage sub-circuit 113, and the first switch sub-circuit 112 is specifically coupled to the first power source 101, the first control sub-circuit 111 and the first energy storage sub-circuit 113 inside the external or voltage drop compensation circuit 10, and the first energy storage sub-circuit 113 is coupled to the external load 102.
The first control sub-circuit 111 may be specifically understood as a signal processing center of the first voltage conversion circuit 11, and may generate a first control signal by loading set program data or receiving a set control instruction sent by an upper computer, that is, any reasonable intelligent terminal communicatively connected to the first voltage conversion circuit 11, for example, a background computer or a smart phone of a user or a server, and control the on-off state of the first switch sub-circuit 112 based on the first control signal.
Optionally, the first control sub-circuit 111 may specifically include one of any reasonable circuits capable of performing program control and signal processing, such as an MCU (micro controller Unit), a single chip microcomputer, or a processing chip, so as to generate the first control signal after receiving the first power supply 101, which is not limited in this application.
And when receiving the first control signal correspondingly transmitted by the first control sub-circuit 111, the first switch sub-circuit 112 can change its current on-off state, so that the first power supply 101 charges or discharges the first energy storage sub-circuit 113, and correspondingly outputs the second power supply to the load 102 through the first energy storage sub-circuit 113, so that the load 102 operates based on the second power supply.
The first switch sub-circuit 112 may specifically be understood as a functional circuit including one or more coupled switching tubes capable of performing on-off control, and the first energy storage sub-circuit 113 may be understood as a functional circuit including one or more coupled energy storage elements, such as inductors and/or capacitors, so as to enable the first power supply 101 and the corresponding energy storage element in the first energy storage sub-circuit 113 to be connected or disconnected by performing on-off control on the corresponding switching tube in the first switch sub-circuit 112, so as to charge or discharge the energy storage element, so that the first energy storage sub-circuit 113 can correspondingly output a stable second power supply, and a specific boost electrical connection manner is adopted to enable the voltage of the second power supply to be higher than the voltage of the first power supply 101.
Further, the first voltage feedback circuit 12 is coupled to the first control sub-circuit 111 and the first energy storage sub-circuit 113, so as to sample a second power supply correspondingly output by the first energy storage sub-circuit 113, and feed back the second power supply to the first control sub-circuit 111, so that the first control sub-circuit 111 can correspondingly adjust a first control signal output to the first switch sub-circuit 112, so as to adjust an on-off state of the first switch sub-circuit 112 based on the adjusted first control signal, for example, the first control signal may specifically be a PWM (Pulse Width modulation) signal, so as to adjust a duty ratio of the PWM signal according to the second power supply correspondingly fed back by the first voltage feedback circuit 12, so as to adjust a time ratio between on and off of a corresponding switch tube in the first switch sub-circuit 112, further adjust a time ratio between charging and discharging of the first power supply 101 to the first energy storage sub-circuit 113, and also adjust a voltage amplitude or other parameters of the second power supply.
Wherein, sampling and feedback that first voltage feedback circuit 12 carried out the second power specifically can be carried out in real time to can be through the real-time feedback regulation of first control sub-circuit 111, and guarantee that the second power can last to stabilize under better state, and can also export different voltage values as required, realize accurate voltage output, and then can guarantee load 102 operating condition's good and stable.
In other embodiments, the first control signal may specifically be a trigger conduction signal, and the first control sub-circuit 111 may further perform corresponding chopping and phase-cut adjustment on the first power supply 101 output to the first energy storage sub-circuit 113 by controlling a conduction timing and a time point of a corresponding switch in the first switch sub-circuit 112, so as to control a magnitude of boosting voltage of the first power supply 101 by the first energy storage sub-circuit 113, thereby ensuring that the second power supply output by the first energy storage sub-circuit 113 can be continuously and stably in a better state.
Different from the prior art, the voltage drop compensation circuit provided in this embodiment can change the on-off state of a first switch sub-circuit when receiving a first control signal sent by the first control sub-circuit, so that the first power supply charges and discharges the first energy storage sub-circuit, and correspondingly outputs a second power supply to a load through the first energy storage sub-circuit, and the first voltage feedback circuit can also sample the second power supply correspondingly output by the first energy storage sub-circuit and feed back the second power supply to the first control sub-circuit, so that the first control sub-circuit correspondingly adjusts the first control signal to adjust the on-off state of the first switch sub-circuit, and further adjust the charging and discharging state of the first power supply to the first energy storage sub-circuit, so as to adjust the second power supply, so as to adjust the power supply output to the load, so as to ensure good power supply to the load, and supply power to the load without using a power supply source with a higher output voltage, so as to effectively reduce the potential safety hazard of the load power supply, and further reduce the voltage withstand requirements of power supply components; and a voltage reduction circuit is not required to be additionally arranged in the load, so that the extra power loss is effectively reduced, and the realization cost is lower.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a voltage drop compensation circuit according to a second embodiment of the present application. In this embodiment, based on the first embodiment of the voltage drop compensation circuit provided in the present application, the voltage drop compensation circuit 20 further includes an input protection circuit 23.
It will be appreciated that there is typically an inrush current that is unavoidable in the power supply of load 102, and that in order to provide a safe and stable input voltage to droop compensation circuit 20, the inrush current must be suppressed to effectively protect droop compensation circuit 20.
The surge current is specifically a peak current flowing into the power supply device at the moment of turning on the power supply. And this peak current is typically much larger than the steady state input current.
Specifically, the input protection circuit 23 is coupled to the external third power supply 103 and the first switch sub-circuit 212, so as to receive an input current correspondingly provided by the external third power supply 103 to the voltage drop compensation circuit 20, and further perform voltage regulation on the third power supply 103, especially suppress a surge current correspondingly generated in a preliminary stage when the third power supply 103 starts to supply power, so as to convert the surge current into a first power supply (not shown), and correspondingly output the first power supply to the first switch sub-circuit 212. In the present embodiment, the first power supply corresponds to two terminals of the internal circuit of the voltage drop compensation circuit 20.
It can be understood that, in the present embodiment, the first voltage converting circuit 21, the first voltage feedback circuit 22, the first control sub-circuit 211, the first switch sub-circuit 212, and the first energy storage sub-circuit 213 are respectively the same as the first voltage converting circuit 11, the first voltage feedback circuit 12, the first control sub-circuit 111, the first switch sub-circuit 112, and the first energy storage sub-circuit 113, for which reference is specifically made to fig. 1 and related text, which are not repeated herein.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a voltage drop compensation circuit according to a third embodiment of the present application. In this embodiment, based on the first embodiment of the voltage drop compensation circuit provided in the present application, the first control sub-circuit 311 in the voltage drop compensation circuit 30 further includes a pulse width modulation sub-circuit 3111.
It can be understood that, in this embodiment, the first control sub-circuit 311 specifically adjusts the on-off state of the first switch sub-circuit 312 through the pulse width modulation sub-circuit 3111, that is, the first control signal is specifically a pulse width modulation signal, and the pulse width modulation sub-circuit 3111 is coupled to the first switch sub-circuit 312 and the first voltage feedback circuit 32, so as to change the current on-off state thereof by sending a corresponding pulse width modulation signal to the first switch sub-circuit 312, and when receiving the second power supply fed back to the pulse width modulation sub-circuit 3111 by the first voltage feedback circuit 32, the pulse width modulation sub-circuit 3111 can also adjust the duty ratio of the pulse width modulation signal output to the first switch sub-circuit 312, so as to adjust the on-off state of the first switch sub-circuit 312, that is, to adjust the time ratio between the on and the off of the corresponding switch tube in the first switch sub-circuit 312, and further adjust the amplitude or other parameters of the voltage of the second power supply.
It can be understood that, in the present embodiment, the first voltage feedback circuit 32, the first control sub-circuit 311, the first switch sub-circuit 312, and the first energy storage sub-circuit 313 are respectively the same as the first voltage feedback circuit 12, the first control sub-circuit 111, the first switch sub-circuit 112, and the first energy storage sub-circuit 113, and specific reference is made to fig. 1 and related text, which are not repeated herein.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a voltage drop compensation circuit according to a fourth embodiment of the present invention. In this embodiment, in addition to the first embodiment of the droop compensation circuit provided in the present application, the droop compensation circuit 40 further includes an input protection circuit 43, a second voltage conversion circuit 44, and a second voltage feedback circuit 45.
It can be understood that, when the droop compensation circuit 40 is intended to perform voltage compensation on a power supply loop of a plurality of loads 102 connected in series, in order to ensure that each load 102 can obtain a suitable power supply voltage and maintain a good working state even if the droop compensation device is connected in series between any two adjacent loads 102 or directly supplies power to all the loads 102, the droop compensation circuit 40 needs to be additionally provided with a functional circuit capable of reducing voltage in addition to the first voltage conversion circuit 41 and the first voltage feedback circuit 42 correspondingly arranged to meet the boosting requirement, so as to be capable of correspondingly matching any reasonable possible power supply scenario.
Specifically, the second voltage converting circuit 44 further includes a second control sub-circuit 441, a second switching sub-circuit 442 and a second tank sub-circuit 443, the input protection circuit 43 is coupled to the external third power source 103 and the second switching sub-circuit 442, the second switching sub-circuit 442 is coupled to the second control sub-circuit 441 and the second tank sub-circuit 443, and the second tank sub-circuit 443 is coupled to the first switching sub-circuit 312.
Therefore, the input protection circuit 43 can receive the input current correspondingly provided by the external third power supply 103 to the voltage drop compensation circuit 40, and then output the fourth power supply to the second switch sub-circuit 442 after performing voltage regulation on the third power supply 103, especially, suppressing the surge current correspondingly generated in the initial stage of starting power supply of the third power supply 103 to convert the surge current into the fourth power supply.
When receiving the second control signal sent by the second control sub-circuit 441, the second switch sub-circuit 442 can change the current on-off state thereof, so that the fourth power supply charges or discharges the second energy storage sub-circuit 443, and correspondingly outputs the first power supply to the first switch sub-circuit 412 through the second energy storage sub-circuit 443, so as to supply power to the first voltage conversion circuit 41 through the first voltage source.
The second switch sub-circuit 442 may also be understood to include one or more switch tubes coupled to each other to enable on-off control of the functional circuit, and the second energy storage sub-circuit 443 may be understood to include one or more phase-coupled energy storage elements, such as inductors and/or capacitors, to enable the fourth power supply to be connected to or disconnected from the corresponding energy storage element in the second energy storage sub-circuit 443 by on-off control of the corresponding switch tube in the second switch sub-circuit 442, so as to charge or discharge the energy storage element, so that the second energy storage sub-circuit 443 can correspondingly output a stable first power supply, and the voltage of the first power supply is lower than the voltage of the third power supply 103 by using a specific step-down electrical connection manner.
Optionally, the second control sub-circuit 441 may specifically include one of any reasonable circuits capable of performing program control and signal processing, such as an MCU (micro controller Unit), a single chip or a processing chip, which is not limited in this application.
Further, the second voltage feedback circuit 45 is coupled to the second control sub-circuit 441 and the second tank sub-circuit 443, so as to sample the first power source output by the second tank sub-circuit 443, and feed back the first power source to the second control sub-circuit 441, so that the second control sub-circuit 441 can correspondingly adjust the second control signal output to the second switch sub-circuit 442, so as to adjust the on-off state of the second switch sub-circuit 442 based on the adjusted second control signal, for example, the second control signal may be a PWM signal, so as to adjust the duty ratio of the PWM signal according to the first power source fed back by the second voltage feedback circuit 45, so as to adjust the time ratio between the on and off of the corresponding switch tube in the second switch sub-circuit 442, and further adjust the time ratio between the charging and discharging of the second tank sub-circuit 443 by the fourth power source, and also adjust the voltage amplitude or other parameters of the first power source.
In other embodiments, the second control signal may specifically be a trigger conducting signal, and the second control sub-circuit 441 may further perform corresponding chopping and phase-cut adjustment on the first power source output to the second energy storage sub-circuit 443 by controlling a conducting timing and a time point of a corresponding switch tube in the second switch sub-circuit 442, so as to control the amplitude of the second energy storage sub-circuit 443 for stepping down the first power source, thereby ensuring that the first power source output by the second energy storage sub-circuit 443 continuously and stably in a good state.
Optionally, the voltage value of the first power supply is greater than 5V and less than the difference obtained by subtracting 1V from the voltage value of the third power supply 103;
optionally, the voltage of the second power supply is greater than the sum of the voltage value of the first power supply plus 1V.
In an embodiment, the voltage drop compensation circuit 40 may further include a voltage output circuit, and the voltage output circuit is coupled to the first energy storage sub-circuit 413, so that when the first voltage conversion circuit 41 and the first voltage feedback circuit 42 correspondingly convert the first power source into the second power source, the second power source can be correspondingly output to the voltage output circuit, so as to supply power to the load 102 corresponding to the voltage output circuit.
It can be understood that, in the present embodiment, the voltage drop compensation circuit 40 specifically provides a safe input voltage for the second voltage conversion circuit 44 through the input protection circuit 43, and outputs a stable power supply voltage to the first voltage conversion circuit 41 through the second voltage conversion circuit 44 and the second voltage feedback circuit 45, and the second voltage feedback circuit 45 can monitor the voltage value of the first power correspondingly output by the second voltage conversion circuit 44 in real time, so that the second voltage conversion circuit 44 compares the voltage value of the first power with the internal reference voltage thereof, and adjusts the corresponding second control signal, so as to ensure that the stable voltage can be continuously output to the first voltage conversion circuit 41.
As such, the input protection circuit 43 is configured to provide a safe input voltage for the second voltage conversion circuit 44; the second voltage converting circuit 44 is coupled to the input protection circuit 43 and configured to complete the first conversion of the input voltage; and the second voltage feedback circuit 45 is coupled to the second voltage converting circuit 44, and configured to control the second voltage converting circuit 44 to output a stable voltage to the first voltage converting circuit 41; the first voltage converting circuit 41 is coupled to the second voltage feedback circuit 45, and configured to perform a second conversion of the input voltage; the first voltage feedback circuit 42 is coupled to the first voltage conversion circuit 41, and configured to enable the first voltage conversion circuit 41 to compare the voltage value of the second power source with an internal reference voltage thereof by monitoring the voltage value of the second power source output by the first voltage conversion circuit 41 in real time, so as to adjust the first control signal sent by the first voltage conversion circuit 41, and further output a stable voltage to the voltage output circuit; the voltage output circuit is coupled to the power load 102 and configured to provide a stable output voltage for the load 102.
According to the above scheme, the first voltage transformation is performed on the input voltage through the second voltage conversion circuit 44 and the second voltage feedback circuit 45, the second voltage transformation is performed on the input voltage through the first voltage conversion circuit 41 and the second voltage feedback circuit 42, and the voltages of the corresponding output ends are monitored in real time through the second voltage feedback circuit 45 and the first voltage feedback circuit 42 to be fed back to the corresponding voltage conversion circuits, so that different voltage values can be correspondingly output to the load 102 as required, and the voltage values can be correspondingly output more accurately through twice voltage transformations and real-time feedback, so that stable working voltage can be effectively provided for the load 102, and the voltage conversion circuit is wide in application range, convenient to implement and low in cost.
It can be understood that, in the present embodiment, the first voltage converting circuit 41, the first voltage feedback circuit 42, the first control sub-circuit 411, the first switch sub-circuit 412, and the first energy storage sub-circuit 413 are respectively the same as the first voltage converting circuit 11, the first voltage feedback circuit 12, the first control sub-circuit 111, the first switch sub-circuit 112, and the first energy storage sub-circuit 113, and specific reference is made to fig. 1 and related text, which are not repeated herein.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an embodiment of the input protection circuit, the second voltage conversion circuit and the second voltage feedback circuit in the voltage drop compensation circuit in fig. 4.
In an embodiment, the input protection circuit 43 specifically includes a first switch Q1, a first capacitor C1, a first resistor R1, and a second capacitor C2, a first end of the first switch Q1 is coupled to the first end V1 of the third power supply 103 and the first end of the first capacitor C1, a third end of the first switch Q1 is coupled to the second end of the first capacitor C1 and the first end of the first resistor R1, and a second end of the first switch Q1 is coupled to the first end of the second capacitor C2 and the second control sub-circuit 441 to form a first end of the fourth power supply; the second terminal of the first resistor R1 is coupled to the second terminal GND of the third power supply 103, the second terminal of the second capacitor C2, and the second control sub-circuit 441 to form the second terminal of the fourth power supply.
The second switch sub-circuit 442 specifically includes a second switch tube Q2, a third switch tube Q3, a third capacitor C3, a second resistor R2, a third resistor R3, a fourth resistor R4, and a fifth resistor R5, and the second energy storage sub-circuit 443 includes a first inductor L1 and a fifth capacitor C5; a first end of the second control sub-circuit 441 is coupled to the third end of the first switch Q1, the first end of the second capacitor C2, the first end of the second resistor R2, and the first end of the second switch Q2, a second end of the second control sub-circuit 441 is coupled to the second end of the second resistor R2, a third end of the second control sub-circuit 441 is coupled to the first end of the third capacitor C3, a fourth end of the second control sub-circuit 441 is coupled to the third end of the second switch Q2, a fifth end of the second control sub-circuit 441 is coupled to the second end of the second switch Q2, the first end of the third switch Q3, the first end of the fifth resistor R5, and the first end of the first inductor L1, a sixth end of the second control sub-circuit 441 is coupled to the third end of the third switch Q3, a seventh end of the second control sub-circuit 441 is coupled to the second voltage feedback circuit 45, an eighth end of the second control sub-circuit 441 is coupled to the second end of the third power supply 103, the second end of the first resistor R1, the second terminal R2, the second end of the second switch Q3, the fourth terminal of the fourth switch Q5, and the second end of the fourth switch R5 are grounded; the ninth terminal of the second control sub-circuit 441 is coupled to the second terminal of the fourth resistor R4, the tenth terminal of the second control sub-circuit 441 is coupled to the second terminal of the third resistor R3, the second terminal of the third capacitor C3 is coupled to the second terminal of the fifth resistor R5, and the second terminal of the first inductor L1 is coupled to the second voltage feedback circuit 45 and the second terminal of the fifth capacitor C5 to form the first terminal V2 of the first power supply.
The first to third switching tubes Q3 may be transistors or any other reasonable transistor, and the first end of each switching tube is a source, the second end is a drain, and the third end is a gate, and the following fourth switching tube Q4 is similar to the above-mentioned first to third switching tubes, and will not be described herein again.
It can be understood that, when the voltage input circuit is correspondingly connected to the first end V1 of the third power supply 103, the first end V1 of the third power supply 103 can charge the first capacitor C1, so that when the source voltage of the first switch Q1 is smaller than the gate voltage thereof, the first switch Q1 is turned on and turned on slowly, and the voltage correspondingly output by the third power supply 103 also rises slowly, and the rising edge is relatively gentle, so as to suppress the input surge current and effectively protect the voltage drop compensation circuit 40.
The drain of the second switch Q2 is electrically connected to the source of the first switch Q1, the drain of the second switch Q2 is electrically connected to the first end of the first inductor L1, the drain of the third switch Q3 is electrically connected to the source of the second switch Q2 and the first end of the first inductor L1, the second end of the first inductor L1 is electrically connected to the first end V2 of the first power supply, and the gate of the second switch Q2 and the gate of the third switch Q3 are electrically connected to the control center U1, that is, the second control sub-circuit 441, so that the second control sub-circuit 441 can alternately turn on and turn off the second switch Q2 and the third switch Q3 by outputting PWM control signals to the second switch Q2 and the third switch Q3 correspondingly. And the third capacitor C3 and the fifth resistor R5 are configured to ensure that the second switch tube Q2 and the third switch tube Q3 can be turned on and off alternately.
When the second switching tube Q2 is turned on, the first inductor L1 can be charged, and the fifth capacitor C5 can be charged at the same time; when the second switching tube Q2 is turned off, the third switching tube Q3 is turned on, the first inductor L1 can discharge through the third switching tube Q3 and simultaneously charge the fifth capacitor C5, and accordingly, the stable output voltage V2 is realized.
Further, the second voltage feedback circuit 45 specifically includes a sixth resistor R6, a seventh resistor R7, and a fourth capacitor C4, wherein a first end of the sixth resistor R6 is coupled to the second end of the first inductor L1, a first end of the fourth capacitor C4, and a second end of the fifth capacitor C5 to form a first end of the first power supply; a second terminal of the sixth resistor R6 is coupled to the first terminal of the seventh resistor R7, the eighth terminal of the second control sub-circuit 441, and the second terminal of the fourth capacitor C4, and a second terminal of the seventh resistor R7 is coupled to the second terminal GND of the third power supply 103, the second terminal of the first resistor R1, the second terminal of the second capacitor C2, the first terminal of the third resistor R3, the first terminal of the fourth resistor R4, the ninth terminal of the second control sub-circuit 441, the second terminal of the third switch Q3, and the first terminal of the fifth capacitor C5, and is grounded to form a second terminal of the first power supply.
It can be understood that the second voltage feedback circuit 45 can divide the voltage and sample through the sixth resistor R6 and the seventh resistor R7, and feed back the output voltage V2 of the first power supply to the control center U1, that is, the first control sub-circuit 411, so that the first control sub-circuit 411 can compare the output voltage V2 with at least one reference voltage inside it, thereby adjusting the PWM signals output to the second switch tube Q2 and the third switch tube Q3 in real time. The fifth capacitor C5 is configured to improve the dynamic performance of the output voltage V2, so as to obtain a stable output voltage V2.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an embodiment of the first voltage converting circuit 41 and the first voltage feedback circuit 42 in the voltage drop compensating circuit 40 in fig. 4.
In an embodiment, the first switch sub-circuit 412 specifically includes a sixth capacitor C6, an eighth resistor R8, a freewheeling diode D1, and a fourth switch Q4, and the first energy storage sub-circuit 413 includes a second inductor L2 and an eighth capacitor C8; a first end of the sixth capacitor C6 is coupled to the first end of the first power supply, the first end of the eighth resistor R8, the second end of the first control sub-circuit 411, and the first end of the second inductor L2, the first end of the first control sub-circuit 411 is coupled to the second end of the eighth resistor R8, the third end of the first control sub-circuit 411 is coupled to the third end of the fourth switch Q4, the fourth end of the first control sub-circuit 411 is coupled to the first voltage feedback circuit 42, the fifth end of the first control sub-circuit 411 is coupled to the second end of the first power supply, the second end of the fourth switch Q4, the first voltage feedback circuit 42, and the first end of the eighth capacitor C8, and is grounded to form a second end GND of the second power supply; a second terminal of the second inductor L2 is coupled to the first terminal of the fourth switching transistor Q4 and the first terminal of the freewheeling diode D1, and a second terminal of the freewheeling diode D1 is coupled to the first voltage feedback circuit 42 and the second terminal of the eighth capacitor C8 to form a first terminal V3 of the second power supply.
It can be understood that the gate of the second switch tube Q2 is electrically connected to the control center U2, that is, the first control sub-circuit 411, and the control center U2 correspondingly outputs a first control signal to the fourth switch tube Q4, and controls the fourth switch tube Q4 to be turned on and off, so that when the fourth switch tube Q4 is turned on, the second inductor L2 is charged, the freewheeling diode D1 is turned off, and when the fourth switch tube Q4 is turned off, the second energy storage inductor L1 is discharged through the freewheeling diode D1, and the eighth capacitor C8 is charged, so as to achieve the stable output voltage V3.
Further, the first voltage feedback circuit 42 specifically includes a ninth resistor R9, a tenth resistor R10, and a seventh capacitor C7, wherein a first end of the ninth resistor R9 is coupled to the second end of the freewheeling diode D1, a first end of the seventh capacitor C7, and a first end of the eighth capacitor C8, and corresponds to the first end V3 of the second power supply; a second end of the ninth resistor R9 is coupled to the fourth end of the first control sub-circuit 411, the first end of the tenth resistor R10, and the second end of the seventh capacitor C7, and a second end of the tenth resistor R10 is coupled to the second end of the first power supply, the fifth end of the first control sub-circuit 411, the second end of the fourth switch Q4, the first voltage feedback circuit 42, and the first end of the eighth capacitor C8, and is grounded to form a second end GND of the second power supply.
It can be understood that the first voltage feedback circuit 42 can divide the voltage of the sampled output voltage V3 by the ninth resistor R9 and the tenth resistor R10, and feed back the output voltage V3 to the control center U2, that is, the first control sub-circuit 411, so that the first control sub-circuit 411 can compare the output voltage V3 with at least one internal reference voltage, thereby adjusting the PWM signal output to the fourth switching tube Q4 correspondingly in real time. The seventh capacitor C7 is configured to improve the dynamic performance of the output voltage V3, so as to be able to output a stable output voltage V3.
Fig. 7 is an exploded schematic view of an embodiment of the pressure drop compensation device according to the present application.
In the present embodiment, the voltage drop compensation device 50 includes a mounting case 51 and a voltage drop compensation circuit 52 connected to the mounting case 51; the voltage drop compensation circuit 52 is any one of the voltage drop compensation circuits 10 to 40, as described above, please refer to fig. 1 to 6 and related text, which are not repeated herein.
It is understood that the voltage drop compensation circuit 52 can be specifically understood as an integrated circuit board, so as to be capable of correspondingly realizing the voltage drop compensation function by being disposed on a mounting housing 51 or being packaged inside the mounting housing 51 and being electrically connected with the corresponding power transmission line and load.
Fig. 8 and fig. 9 show an electronic device, where fig. 8 is a schematic structural diagram of an embodiment of the electronic device of the present application, and fig. 9 is a detailed partial exploded view of the electronic device in fig. 8.
In the present embodiment, the electronic device 60 includes a voltage drop compensation device 61 and at least two loads 62 connected in series in sequence, and the voltage drop compensation device 61 is connected in series between any two adjacent loads 62; the pressure drop compensation device 61 is the pressure drop compensation device 50, as described above, please refer to fig. 7 and related text, which are not described herein again.
In a specific embodiment, the electronic device 60 may be an intelligent lighting device, and the electric load may be a wall square lamp capable of being spliced, as shown in fig. 8, each triangular region corresponds to a lamp body, so that the lamp bodies can be spliced and connected in series to perform lighting of corresponding colors.
Further, the electronic device 60 further comprises a power supply 63, so that the voltage drop compensation device 61 and the at least two loads 62 can be powered by the power supply 63.
The voltage drop compensation device 61 is specifically arranged between the nth lamp body and the (N + 1) th lamp body, electrically connected with the nth lamp body and the (N + 1) th lamp body, and provided with a structure matched with the light-emitting back of the lamp body, and specifically arranged on the light-emitting back of the nth lamp body and the (N + 1) th lamp body so as not to influence the assembly effect of the plurality of lamp bodies.
Understandably, this voltage drop compensation arrangement 61 can effectively supply power compensation to the (N + 1) th lamp body and the lamp body after it in series to promote the voltage that corresponds the output to the (N + 1) th lamp body, and guarantee output voltage's stability, thereby can improve the adverse effect that the voltage drop on the transmission line of a plurality of lighting lamp bodies of establishing ties brought, and when guaranteeing that a plurality of lighting lamp bodies supply power for a long distance, the lamp body of different positions can not produce the colour difference.
In an embodiment, when there are a plurality of loads 62 connected in series in the electronic device 60, the number of the voltage drop compensation devices 61 correspondingly disposed in the electronic device 60 can also be at least two, and at least two voltage drop compensation devices are connected in series between any reasonable two adjacent loads 62 at intervals, so as to perform corresponding voltage compensation on the power supplied by the power supply 63, and ensure that each load 62 can obtain a good working state.
Different from the prior art, when receiving a first control signal sent by a first control sub-circuit, a first switch sub-circuit in the voltage drop compensation circuit in the application can change the on-off state of the first switch sub-circuit, so that the first power supply charges and discharges the first energy storage sub-circuit, and correspondingly outputs a second power supply to a load through the first energy storage sub-circuit, and a first voltage feedback circuit can also sample the second power supply correspondingly output by the first energy storage sub-circuit and feed back the second power supply to the first control sub-circuit, so that the first control sub-circuit correspondingly adjusts the first control signal to adjust the on-off state of the first switch sub-circuit, further adjust the charging and discharging state of the first power supply to the first energy storage sub-circuit, so as to adjust the second power supply, thereby adjusting the power supply output to the load, so as to ensure good power supply of the load, without adopting a power supply load with a higher output voltage to supply power, so as to effectively reduce the potential safety hazard of the load power supply, and further reduce the voltage withstand requirement of power supply components; and a voltage reduction circuit is not required to be additionally arranged in the load, so that the extra power loss is effectively reduced, and the realization cost is lower.
The above are only embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent processes performed by the present application and the contents of the attached drawings, which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A droop compensation circuit, comprising:
the first voltage conversion circuit comprises a first control sub-circuit, a first switch sub-circuit and a first energy storage sub-circuit, wherein the first switch sub-circuit is coupled with a first power supply, the first control sub-circuit and the first energy storage sub-circuit, the first energy storage sub-circuit is coupled with an external load, and the first switch sub-circuit receives a first control signal sent by the first control sub-circuit so as to change the on-off state of the first control signal, so that the first power supply charges and discharges the first energy storage sub-circuit, and a second power supply is correspondingly output to the load through the first energy storage sub-circuit;
the first voltage feedback circuit is coupled with the first control sub-circuit and the first energy storage sub-circuit to sample the second power supply correspondingly output by the first energy storage sub-circuit and feed back the second power supply to the first control sub-circuit, so that the first control sub-circuit correspondingly adjusts the first control signal to adjust the on-off state of the first switch sub-circuit, and further adjusts the charging and discharging state of the first energy storage sub-circuit by the first power supply to adjust the second power supply.
2. The droop compensation circuit of claim 1,
the voltage drop compensation circuit further comprises an input protection circuit, the input protection circuit is coupled with an external third power supply and the first switch sub-circuit, and the input protection circuit regulates the third power supply to be the first power supply in a voltage stabilizing mode so as to output the third power supply to the first switch sub-circuit.
3. The droop compensation circuit of claim 1,
the voltage drop compensation circuit further comprises an input protection circuit, a second voltage conversion circuit and a second voltage feedback circuit, wherein the second voltage conversion circuit comprises a second control sub-circuit, a second switch sub-circuit and a second energy storage sub-circuit, the input protection circuit is coupled with an external third power supply and the second switch sub-circuit, the second switch sub-circuit is coupled with the second control sub-circuit and the second energy storage sub-circuit, the second energy storage sub-circuit is coupled with the first switch sub-circuit, the input protection circuit regulates the third power supply into a fourth power supply in a voltage stabilizing manner to output the fourth power supply to the second switch sub-circuit, so that the second switch sub-circuit changes the on-off state of the second control sub-circuit when receiving a second control signal sent by the first control sub-circuit, the fourth power supply charges and discharges the second energy storage sub-circuit, and correspondingly outputs the first power supply to the first switch sub-circuit through the second energy storage sub-circuit;
the second voltage feedback circuit is coupled to the second control sub-circuit and the second energy storage sub-circuit to sample the first power supply correspondingly output by the second energy storage sub-circuit and feed back the first power supply to the second control sub-circuit, so that the second control sub-circuit correspondingly adjusts the second control signal to adjust the on-off state of the second switch sub-circuit, and further adjusts the charging and discharging state of the fourth power supply on the second energy storage sub-circuit to adjust the first power supply.
4. The droop compensation circuit of claim 3,
the input protection circuit comprises a first switch tube, a first capacitor, a first resistor and a second capacitor, wherein a first end of the first switch tube is coupled with a first end of the third power supply and a first end of the first capacitor, a third end of the first switch tube is coupled with a second end of the first capacitor and a first end of the first resistor, and a second end of the first switch tube is coupled with a first end of the second capacitor and the second control sub-circuit to form a first end of the fourth power supply;
the second end of the first resistor is coupled to the second end of the third power supply, the second end of the second capacitor and the second control sub-circuit to form the second end of the fourth power supply.
5. The droop compensation circuit of claim 4,
the second energy storage sub-circuit comprises a first inductor and a fifth capacitor;
a first terminal of the second control sub-circuit is coupled to the third terminal of the first switching tube, the first terminal of the second capacitor, the first terminal of the second resistor, and the first terminal of the second switching tube, a second terminal of the second control sub-circuit is coupled to the second terminal of the second resistor, a third terminal of the second control sub-circuit is coupled to the first terminal of the third capacitor, a fourth terminal of the second control sub-circuit is coupled to the third terminal of the second switching tube, a fifth terminal of the second control sub-circuit is coupled to the second terminal of the second switching tube, the first terminal of the third switching tube, the first terminal of the fifth resistor, and the first terminal of the first inductor, a sixth terminal of the second control sub-circuit is coupled to the third terminal of the third switching tube, a seventh terminal of the second control sub-circuit is coupled to the second voltage feedback circuit, an eighth terminal of the second control sub-circuit is coupled to the second terminal of the third power supply, the second terminal of the first resistor, the second terminal of the second capacitor, the second terminal of the second resistor, the second terminal of the second control sub-circuit, the second terminal of the third switch tube, the second resistor, and the first terminal of the second resistor, the second control sub-circuit are grounded;
a ninth terminal of the second control sub-circuit is coupled to the second terminal of the fourth resistor, a tenth terminal of the second control sub-circuit is coupled to the second terminal of the third resistor, a second terminal of the third capacitor is coupled to the second terminal of the fifth resistor, and a second terminal of the first inductor is coupled to the second voltage feedback circuit and the second terminal of the fifth capacitor to form a first terminal of the first power supply.
6. The droop compensation circuit of claim 5,
the second voltage feedback circuit comprises a sixth resistor, a seventh resistor and a fourth capacitor, wherein a first end of the sixth resistor is coupled to the second end of the first inductor, a first end of the fourth capacitor and a second end of the fifth capacitor to form a first end of the first power supply;
a second end of the sixth resistor is coupled to the first end of the seventh resistor, the eighth end of the second control sub-circuit, and the second end of the fourth capacitor, and a second end of the seventh resistor is coupled to the second end of the third power supply, the second end of the first resistor, the second end of the second capacitor, the first end of the third resistor, the first end of the fourth resistor, the eighth end of the second control sub-circuit, the second end of the third switching tube, and the first end of the fifth capacitor and is grounded to form a second end of the first power supply.
7. The droop compensation circuit of any one of claims 1-6,
the first switch sub-circuit comprises a sixth capacitor, an eighth resistor, a freewheeling diode and a fourth switch tube, and the first energy storage sub-circuit comprises a second inductor and an eighth capacitor;
the first end of the sixth capacitor is coupled to the first end of the first power supply, the first end of the eighth resistor, the second end of the first control sub-circuit and the first end of the second inductor, the first end of the first control sub-circuit is coupled to the second end of the eighth resistor, the third end of the first control sub-circuit is coupled to the third end of the fourth switch tube, the fourth end of the first control sub-circuit is coupled to the first voltage feedback circuit, and the fifth end of the first control sub-circuit is coupled to the second end of the first power supply, the second end of the fourth switch tube, the first voltage feedback circuit and the first end of the eighth capacitor and grounded to form the second end of the second power supply;
a second end of the second inductor is coupled to a first end of the fourth switching transistor and a first end of a freewheeling diode, and a second end of the freewheeling diode is coupled to the first voltage feedback circuit and a second end of the eighth capacitor to form a first end of the second power supply.
8. The droop compensation circuit of claim 7,
the first voltage feedback circuit comprises a ninth resistor, a tenth resistor and a seventh capacitor, wherein a first end of the ninth resistor is coupled to a second end of the freewheeling diode, a first end of the seventh capacitor and a first end of the eighth capacitor, and corresponds to a first end of the second power supply;
the second end of the ninth resistor is coupled to the fourth end of the first control sub-circuit, the first end of the tenth resistor, and the second end of the seventh capacitor, and the second end of the tenth resistor is coupled to the second end of the first power supply, the fifth end of the first control sub-circuit, the second end of the fourth switch, the first voltage feedback circuit, and the first end of the eighth capacitor, and is grounded to form the second end of the second power supply.
9. A voltage drop compensation device, comprising a mounting housing and a voltage drop compensation circuit coupled to the mounting housing;
wherein the voltage drop compensation circuit is according to any one of claims 1-8.
10. An electronic device, wherein the electronic device includes a voltage drop compensation device and at least two loads connected in series in sequence, and the voltage drop compensation device is connected in series between any two adjacent loads;
wherein the pressure drop compensating device is as defined in claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220769461.5U CN218450626U (en) | 2022-03-31 | 2022-03-31 | Voltage drop compensation circuit, voltage drop compensation device and electronic equipment |
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| CN202220769461.5U CN218450626U (en) | 2022-03-31 | 2022-03-31 | Voltage drop compensation circuit, voltage drop compensation device and electronic equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116846039A (en) * | 2023-08-30 | 2023-10-03 | 浙江大华技术股份有限公司 | Charging and discharging device, method, apparatus and storage medium |
| CN117477978A (en) * | 2023-12-28 | 2024-01-30 | 深圳麦格米特电气股份有限公司 | Power supply conversion circuit, power supply circuit and electronic equipment |
| CN117811364A (en) * | 2024-03-01 | 2024-04-02 | 深圳麦格米特电气股份有限公司 | Voltage holding circuit and method, power supply circuit and electronic equipment |
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2022
- 2022-03-31 CN CN202220769461.5U patent/CN218450626U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116846039A (en) * | 2023-08-30 | 2023-10-03 | 浙江大华技术股份有限公司 | Charging and discharging device, method, apparatus and storage medium |
| CN116846039B (en) * | 2023-08-30 | 2024-02-20 | 浙江大华技术股份有限公司 | Charging and discharging device, method, apparatus and storage medium |
| CN117477978A (en) * | 2023-12-28 | 2024-01-30 | 深圳麦格米特电气股份有限公司 | Power supply conversion circuit, power supply circuit and electronic equipment |
| CN117477978B (en) * | 2023-12-28 | 2024-06-11 | 深圳麦格米特电气股份有限公司 | Power supply conversion circuit, power supply circuit and electronic equipment |
| CN117811364A (en) * | 2024-03-01 | 2024-04-02 | 深圳麦格米特电气股份有限公司 | Voltage holding circuit and method, power supply circuit and electronic equipment |
| CN117811364B (en) * | 2024-03-01 | 2024-06-11 | 深圳麦格米特电气股份有限公司 | Voltage holding circuit and method, power supply circuit and electronic equipment |
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| GR01 | Patent grant |