CN117762185A - Constant power output circuit, circuit board and electronic cigarette - Google Patents
Constant power output circuit, circuit board and electronic cigarette Download PDFInfo
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- CN117762185A CN117762185A CN202410068427.9A CN202410068427A CN117762185A CN 117762185 A CN117762185 A CN 117762185A CN 202410068427 A CN202410068427 A CN 202410068427A CN 117762185 A CN117762185 A CN 117762185A
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- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 24
- 238000005070 sampling Methods 0.000 claims abstract description 85
- 238000013139 quantization Methods 0.000 claims abstract description 75
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 235000019504 cigarettes Nutrition 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 15
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- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
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- 230000000391 smoking effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application discloses constant power output circuit, circuit board and electron cigarette. Wherein, constant power output circuit includes: a driving unit for outputting a driving signal; the voltage sampling unit is used for sampling output voltage corresponding to the load according to the driving signal; the current sampling unit is used for outputting sampling current corresponding to the driving signal according to the driving signal; the compensation unit is used for outputting a loss voltage corresponding to the load according to the sampling current; the first quantization unit is used for generating a first quantization parameter corresponding to the load according to the output voltage and the loss voltage; the second quantization unit is used for outputting a second quantization parameter corresponding to the load according to the sampling current and the first quantization parameter; and the signal output unit is used for outputting an output signal corresponding to the compensated power according to the second quantization parameter. In the application, the output signal corresponding to the compensated power is output, so that constant power output is realized, and the use experience of the electronic cigarette of a user can be further improved.
Description
Technical Field
The application relates to the technical field of electronic circuits, in particular to a constant power output circuit, a circuit board and an electronic cigarette.
Background
Electronic cigarettes are airflow sensors imitating traditional cigarettes, and are popular with more users due to the fact that the appearance, smoke, taste and the like of the electronic cigarettes are similar to those of the traditional cigarettes. The electronic cigarette generally adopts constant power output, namely when the voltage and the load of the battery change, the heating wire can be uniformly heated, and the tobacco tar is atomized, so that the suction effect of a user is optimal; the constant power design is usually required to sample the voltage and current corresponding to the load so as to ensure that the power is kept constant, but at present, partial loss possibly exists at the heating wire end, so that a user often experiences the power of which the output power cannot reach the product specification when experiencing the electronic cigarette, and the smoking effect of the user is affected. Therefore, how to improve the use experience of the electronic cigarette of the user becomes a technical problem to be solved urgently.
Disclosure of Invention
The present application aims to solve, at least to some extent, one of the technical problems in the related art. Therefore, the application provides a constant power output circuit, a circuit board and an electronic cigarette, and the electronic cigarette using experience of a user can be improved.
In a first aspect, embodiments of the present application provide a constant power output circuit, including:
a driving unit for outputting a driving signal;
the voltage sampling unit is connected with one output end of the driving unit and is used for sampling output voltage corresponding to a load according to the driving signal;
the current sampling unit is connected with one output end of the driving unit and is used for outputting sampling current corresponding to the driving signal according to the driving signal;
the compensation unit is connected with the output end of the current sampling unit and is used for outputting the loss voltage corresponding to the load according to the sampling current;
the first quantization unit is respectively connected with the output end of the voltage sampling unit and the output end of the compensation unit and is used for generating a first quantization parameter corresponding to a load according to the output voltage and the loss voltage;
the second quantization unit is respectively connected with the output end of the current sampling unit and the output end of the first quantization unit and is used for outputting a second quantization parameter corresponding to a load according to the sampling current and the first quantization parameter;
and the signal output unit is connected with the second quantization unit and is used for outputting an output signal corresponding to the compensated power according to the second quantization parameter.
Optionally, in one embodiment of the present application, the compensation unit includes an alternative resistor string, one end of the alternative resistor string is connected to the output end of the current sampling unit, where the alternative resistor string is used to provide a compensation resistor corresponding to a load to output a loss voltage corresponding to the load.
Optionally, in one embodiment of the present application, the alternative resistor string includes a plurality of serially connected analog resistor elements, each of the analog resistor elements including a base resistor and a control switch connected in parallel, each of the control switches being configured to adjust a resistance value of the corresponding analog resistor element.
Optionally, in an embodiment of the present application, the power setting unit further includes a power setting unit, an output end of the power setting unit is connected to an input end of the signal output unit, and the power setting unit is further configured to be connected to a preset power resistor, where the power setting unit is configured to output a preset third quantization parameter to the signal output unit according to the power resistor, so that the signal output unit outputs an output signal corresponding to the compensated power according to the second quantization parameter and the third quantization parameter.
Optionally, in an embodiment of the present application, the current sampling unit includes a first switching tube, a second switching tube and a third switching tube, a source electrode of the first switching tube is connected with one output end of the driving unit, a gate electrode of the second switching tube is connected with a drain electrode of the second switching tube and a gate electrode of the third switching tube respectively, a source electrode of the second switching tube is connected with a source electrode of the third switching tube, and a drain electrode of the third switching tube is connected with the compensation unit.
Optionally, in an embodiment of the present application, the voltage sampling unit includes a voltage sampling end, and a first resistor and a second resistor connected in series, where the voltage sampling end is connected between the first resistor and the second resistor, and the other end of the first resistor and the other end of the second resistor are used for being connected with a load, and the voltage sampling end is further connected to one input end of the first quantization unit.
Optionally, in an embodiment of the present application, the driving unit includes a power switch tube and a peripheral driving circuit matched with the power switch tube, where the power switch tube is connected to the peripheral driving circuit, an input end of the peripheral driving circuit is used to receive the driving signal, and an output end of the peripheral driving circuit is used to output the driving signal to the power switch tube.
Optionally, in an embodiment of the present application, the first quantization unit employs a subtractor circuit, and the second quantization unit employs a multiplier circuit.
In a second aspect, embodiments of the present application further provide a circuit board including the constant power output circuit according to the first aspect.
In a third aspect, embodiments of the present application further provide an electronic cigarette, including the constant power output circuit according to the first aspect.
According to the constant power output circuit, the circuit board and the electronic cigarette, the output voltage and the sampling current corresponding to the load are respectively obtained through the voltage sampling unit and the current sampling unit, so that the compensation unit outputs the loss voltage corresponding to the load according to the sampling current, and further the output of the corresponding quantization parameters is realized through the first quantization unit and the second quantization unit, so that the signal output unit outputs the output signal corresponding to the compensated power according to the second quantization parameters, constant power output is realized, and the use experience of the electronic cigarette of a user can be further improved.
Drawings
The accompanying drawings are included to provide a further understanding of the technical methods of the present application and are incorporated in and constitute a part of this specification, illustrate the technical methods of the present application and together with the examples of the present application, and not constitute a limitation of the technical methods of the present application.
FIG. 1 is a functional block diagram of a constant power output circuit provided in one embodiment of the present application;
FIG. 2 is a functional block diagram of a constant power output circuit provided in accordance with another embodiment of the present application;
FIG. 3 is a schematic diagram of the structural connection of a constant power output circuit according to one embodiment of the present application;
FIG. 4 is a functional block diagram of a power setting unit provided by one embodiment of the present application;
FIG. 5 is a functional block diagram of a current sampling unit provided in one embodiment of the present application;
FIG. 6 is a functional block diagram of a constant power output circuit provided in accordance with another embodiment of the present application;
FIG. 7 is a schematic diagram of the structural connection of a constant power output circuit according to another embodiment of the present application;
FIG. 8 is a schematic diagram of a circuit board provided in one embodiment of the present application;
fig. 9 is a schematic diagram of an electronic cigarette according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical methods and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It should be noted that, in the specification, the claims and the above drawings, the terms "first", "second", and the like are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, and the "first resistor" and the "second resistor" in the following embodiments respectively represent two resistors, and are not necessarily used to describe a specific order or sequence of the "first resistor" and the "second resistor", and the like, and similar matters are not repeated herein.
The application provides a constant power output circuit, a circuit board and an electronic cigarette. A constant power output circuit of one embodiment includes: a driving unit for outputting a driving signal; the voltage sampling unit is connected with one output end of the driving unit and is used for sampling output voltage corresponding to the load according to the driving signal; the current sampling unit is connected with one output end of the driving unit and is used for outputting sampling current corresponding to the driving signal according to the driving signal; the compensation unit is connected with the output end of the current sampling unit and is used for outputting the loss voltage corresponding to the load according to the sampling current; the first quantization unit is respectively connected with the output end of the voltage sampling unit and the output end of the compensation unit and is used for generating a first quantization parameter corresponding to the load according to the output voltage and the loss voltage; the second quantization unit is respectively connected with the output end of the current sampling unit and the output end of the first quantization unit and is used for outputting a second quantization parameter corresponding to the load according to the sampling current and the first quantization parameter; and the signal output unit is connected with the second quantization unit and is used for outputting an output signal corresponding to the compensated power according to the second quantization parameter. In this embodiment, the voltage sampling unit and the current sampling unit respectively obtain the output voltage and the sampling current corresponding to the load, so that the compensation unit outputs the loss voltage corresponding to the load according to the sampling current, and further, the first quantization unit and the second quantization unit realize the output of the corresponding quantization parameters, so that the signal output unit outputs the output signal corresponding to the compensated power according to the second quantization parameters, thereby realizing constant power output and further improving the use experience of the electronic cigarette of the user.
Embodiments of the present application are further described below with reference to the accompanying drawings.
As shown in fig. 1, fig. 1 is a schematic block diagram of a constant power output circuit provided in one embodiment of the present application, which may include, but is not limited to:
the driving unit 100 is configured to output a driving signal, for example, but not limited to, a driving signal may be output through logic processing of a logic signal and a protection signal, where the logic signal may be preconfigured, may be generated and output in real time by using a specific signal circuit, and the protection signal plays a role in signal protection, or a person skilled in the art may select the logic signal and the protection signal according to a specific application scenario, which is not limited herein;
the voltage sampling unit 400 is connected with one output end of the driving unit 100 and is used for sampling output voltage corresponding to the load according to the driving signal;
the current sampling unit 200 is connected with one output end of the driving unit 100 and is used for outputting sampling current corresponding to the driving signal according to the driving signal;
the compensation unit 300 is connected with the output end of the current sampling unit 200 and is used for outputting the loss voltage corresponding to the load according to the sampling current;
the first quantization unit 500 is connected to the output end of the voltage sampling unit 400 and the output end of the compensation unit 300, and is used for generating a first quantization parameter corresponding to the load according to the output voltage and the loss voltage;
the second quantization unit 600 is connected to the output end of the current sampling unit 200 and the output end of the first quantization unit 500, and is configured to output a second quantization parameter corresponding to the load according to the sampling current and the first quantization parameter;
the signal output unit 700 is connected to the second quantization unit 600, and is configured to output an output signal corresponding to the compensated power according to the second quantization parameter.
The voltage sampling unit 400 and the current sampling unit 200 are used for respectively obtaining the output voltage and the sampling current corresponding to the load, so that the compensation unit 300 outputs the loss voltage corresponding to the load according to the sampling current, and further the output of the corresponding quantization parameters is realized through the first quantization unit 500 and the second quantization unit 600, so that the signal output unit 700 outputs the output signal corresponding to the compensated power according to the second quantization parameters, constant power output is realized, and the use experience of the electronic cigarette of a user can be further improved.
In an embodiment, the types, parameters, and the like of the driving unit 100 may be various, that is, those skilled in the art may select and set the driving unit according to the actual application scenario, for example, referring to fig. 1, in the application scenario of the electronic cigarette corresponding to the application, the driving unit 100 may be but not limited to be set to include a power switch tube and a peripheral driving circuit 110 matched with the power switch tube, the power switch tube is connected to the peripheral driving circuit 110, an input end of the peripheral driving circuit 110 is used for receiving a driving signal, and an output end of the peripheral driving circuit 110 is used for outputting a driving signal to the power switch tube, that is, when the peripheral driving circuit 110 adopts a corresponding control chip, the driving unit 100 may adopt one or more power switch tubes and control chips for matching, or, when in other application scenarios, the driving unit 100 may also adopt other kinds of elements, and the like, which is not limited herein.
It should be noted that the peripheral driving circuit 110 is well known to those skilled in the art, and thus is not described herein.
In an embodiment, the types of the driving signals may be various, for example, but not limited to, PWM driving signals, which may be preset, that is, the PWM driving signals are constantly output, or may be variably output, for example, another dedicated circuit may be designed to control the duty ratio of the PWM driving signals, so as to be capable of outputting different PWM driving signals, and the like, which is not limited herein.
In an embodiment, the number and types of loads may be various, and those skilled in the art may select and set according to specific application scenarios, which is not limited herein.
Referring to fig. 2, fig. 2 is a schematic block diagram of a constant power output circuit provided in another embodiment of the present application, in an embodiment, referring to fig. 4, the constant power output circuit may further include, but is not limited to, a power setting unit 800, an output end of the power setting unit 800 is connected to an input end of the signal output unit 700, the power setting unit 800 is further configured to be connected to a preset power resistor, where the power setting unit 800 is configured to output a preset third quantization parameter to the signal output unit 700 according to the power resistor, so that the signal output unit 700 outputs an output signal corresponding to the compensated power according to the second quantization parameter and the third quantization parameter, and it can be seen that by constructing a power setting unit 800 as a reference, the signal output unit 700 can output a required target signal according to different quantization parameters, so that the obtained output signal is more accurate, so as to implement constant power output.
In an embodiment, the first quantization unit 500 may, but is not limited to, use a subtractor circuit, and the second quantization unit 600 may, but is not limited to, use a multiplier circuit, i.e. a multiplier circuit generates a related parameter of a first quantization parameter, and generates a related parameter of a second quantization parameter, and the subtractor circuit and the multiplier circuit may output an output signal with a power dimension so as to further compare the output signal with an output signal corresponding to the power setting unit 800.
It should be noted that the subtractor circuit and the multiplier circuit are well known to those skilled in the art, and the specific structure thereof may be configured according to the practical application scenario, which is not limited herein.
In an embodiment, as shown in fig. 2, an analog-to-digital converter may be disposed between the first quantization unit 500 and the second quantization unit 600, and the output of the front end may be digitized by the analog-to-digital converter, so that the output may be converted into a digital quantity that is convenient for the back end to calculate.
As shown in fig. 3, fig. 3 is a schematic structural connection diagram of a constant power output circuit according to an embodiment of the present application, where, since specific structures of the second quantization unit and the signal output unit are well known to those skilled in the art, the circuit structure is not shown in fig. 3 for redundancy avoidance.
Referring to fig. 3 and 5, the current sampling unit 200 includes a first switching tube NM2, a second switching tube PM1 and a third switching tube PM2, where the source of the first switching tube NM2 is connected to one output end of the power switching tube NM1 in the driving unit, the gate of the second switching tube PM1 is connected to the drain of the second switching tube PM1 and the gate of the third switching tube PM2, respectively, the source of the second switching tube PM1 is connected to the source of the third switching tube PM2, and the drain of the third switching tube PM2 is connected to the compensation unit 300, and it can be seen that the first switching tube NM2 plays a role in switching on, that is, the driving signal input by the power switching tube NM1 is turned on by the first switching tube NM2, and since the second switching tube PM1 and the third switching tube PM2 are two switching tubes in corresponding proportion, when the duty ratio of the driving signal is zero, that is, in this case, the forcibly injected current is mirrored, and the mirrored current flows into the compensation unit 300, so that the compensation unit 300 can output a corresponding output voltage loss according to the current output load, thereby realizing compensation.
It should be noted that the current mirror ratios corresponding to the second switching tube PM1 and the third switching tube PM2 may be various, for example, K:1 or 1:1, k is a positive number, and the current sampling unit 200 may have various configurations other than the current sampling unit 200 shown in fig. 2, and one skilled in the art may select the configuration according to a specific application scenario, which is not limited herein.
In an embodiment, as shown in fig. 3, the first quantization unit 500 adopts a subtractor circuit formed based on an operational amplifier architecture, which is not described herein for redundancy.
Referring to fig. 3, the compensation unit 300 includes an alternative resistor string, one end of the alternative resistor string is connected to the output end of the current sampling unit 200, where the alternative resistor string is used for providing a compensation resistor corresponding to a load to output a loss voltage corresponding to the load.
In an embodiment, the alternative resistor string includes a plurality of serially connected analog resistor elements, each analog resistor element includes a basic resistor and a control switch (sw 1, sw2 and sw3 shown in fig. 2) connected in parallel, each control switch is used for adjusting the resistance value of the corresponding analog resistor element, that is, by selectively controlling each analog resistor element, the resistance value of each analog resistor element can be controlled, so that the adjustment of the overall resistance value of the alternative resistor string is realized, that is, the alternative resistor string can be used for simulating line loss resistors possibly occurring in an actual scene, and by setting a plurality of control switches, the resistance value change of the line loss resistors can be realized by controlling each control switch, so that the line loss situation of the actual application scene can be better simulated.
Referring to fig. 3, the voltage sampling unit 400 includes a voltage sampling end, a first resistor R1 and a second resistor R2 connected in series, wherein one end of the first resistor R1 and one end of the second resistor R2 are connected to a load, the voltage sampling end is connected between the first resistor R1 and the second resistor R2, and the voltage sampling end is further connected to one input end of the first quantization unit 500, that is, voltage sampling of a signal output end corresponding to the load can be achieved through cooperation of resistor voltage division and the voltage sampling end.
The flow of the constant power output circuit in each of the above embodiments may be performed based on an analog method or may be performed based on a digital method, that is, the circuit unit in each of the above embodiments may be implemented by an analog circuit or a digital circuit.
In order to better explain the working principles of the above embodiments, specific examples are given below for explanation.
Example one:
since the output power pideal=vat_iat_duty, preal= (Vat-iat_rline) ×iat_duty of the conventional design, where Pidea is the ideal output power, preal is the actual output power, rline is the line loss resistor, vat is the output voltage, iat is the output current, and Duty is the Duty ratio of the driving signal, one idea of compensating the power is to compensate the output point voltage, and it can be seen that the Duty ratio of the output signal is determined by the ratio of the actual detected power and the set constant power, that is, the output signal controls the switching of each switching tube at the rear end through the driving unit, so that the output power is kept constant.
Referring to fig. 1 to 3, after the power switch NM1 is turned on, a current path is generated, the voltage sampling unit 400 divides the sampled output voltage Vat by a resistor, and the sampled voltage vs= [ R2/(r1+r2) ]; the source voltages of the power switch tube NM1 and the first switch tube NM2 are clamped by the operational amplifier 1, and the size ratio of the power switch tube NM1 to the first switch tube NM2 is K:1, so the value of the sampling current is Iat/K. After passing through the current mirror circuit, the sampling current is transferred to the branch circuit consisting of the third switching tube PM2 and the sampling resistor Rs and the compensation unit 300 consisting of the fourth switching tube PM3, the basic resistor and the control switch. From this, isv= (Iat/K) Rs, i.e. the voltage value corresponding to the output current Iat that needs to be quantized, can be analyzed; taking the example that the control switch sw1 is opened, the control switch sw2 is closed, and the control switch sw3 is closed in the compensation unit 300, the sampling current flows through the line loss compensation resistor Roff1 to generate the compensation voltage Voffset, voffset= (Iat/K) ×roff1; the sampled voltage Vs and the offset voltage Voffset are then transmitted to the non-inverting input and the inverting input of the op-amp 2 in the subtractor circuit, and the voltage at the output of the op-amp 2 can be expressed as:
when r3=r4=r5=r6, and roff1=k1×rline, V o1 The expression can be as follows:
V o1 ＝V s -V offset
if R2/(r1+r2) =k1/k=c, then:
V o1 ＝c·(V at -I at ·R line )
vo1 and ISV are quantized by time division of an analog-to-digital converter, and then multiplied by a digital multiplier and processed by a digital algorithm in a signal output unit, so that a compensated constant power value poffset= (Vat-Iat Rline) Iat Duty can be output.
Example two:
if the compensation is implemented by using a digital circuit, referring to fig. 6 and fig. 7, fig. 6 is a schematic block diagram of a constant power output circuit provided in another embodiment of the present application, fig. 7 is a schematic block diagram of a structure connection diagram of the constant power output circuit provided in another embodiment of the present application, and compared with a mode of implementing the power compensation by using an analog circuit, a mode of implementing the compensation by using a digital circuit is substantially the same as the process shown in the above example one, concretely referring to the above example one, similarly, the analog-to-digital converter time-division quantizes the sampling voltage VS, the line loss compensation voltage Voffset and the voltage value ISV corresponding to the output current, then subtracts the digital code parameters obtained by quantizing the sampling voltage VS and the line loss compensation voltage Voffset by using a digital subtractor, multiplies the result by the quantized code of the sampling current by using a digital multiplier, and finally processes by using a digital algorithm inside the signal output unit, so as to output the compensated constant power value poffset= (Vat-ii).
In addition, as shown in fig. 8, an embodiment of the present application further discloses a circuit board 900, including a constant power output circuit as shown in any of the above embodiments.
In addition, as shown in fig. 9, an embodiment of the present application further discloses an electronic cigarette 1000, including a constant power output circuit as shown in any of the above embodiments.
The circuit board 900 and the constant power output circuit provided in the embodiment of the present application correspond to each other, and the electronic cigarette 1000 and the constant power output circuit correspond to each other, so that the circuit board 900 and the electronic cigarette 1000 also have similar embodiments and beneficial technical effects to those of the corresponding constant power output circuit, and the embodiments and beneficial technical effects of the constant power output circuit have been described in detail above, so that the corresponding embodiments and beneficial technical effects of the circuit board 900 and the electronic cigarette 1000 are not described again here.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. A constant power output circuit, comprising:
a driving unit for outputting a driving signal;
the voltage sampling unit is connected with one output end of the driving unit and is used for sampling output voltage corresponding to a load according to the driving signal;
the current sampling unit is connected with one output end of the driving unit and is used for outputting sampling current corresponding to the driving signal according to the driving signal;
the compensation unit is connected with the output end of the current sampling unit and is used for outputting the loss voltage corresponding to the load according to the sampling current;
the first quantization unit is respectively connected with the output end of the voltage sampling unit and the output end of the compensation unit and is used for generating a first quantization parameter corresponding to a load according to the output voltage and the loss voltage;
the second quantization unit is respectively connected with the output end of the current sampling unit and the output end of the first quantization unit and is used for outputting a second quantization parameter corresponding to a load according to the sampling current and the first quantization parameter;
and the signal output unit is connected with the second quantization unit and is used for outputting an output signal corresponding to the compensated power according to the second quantization parameter.
2. The constant power output circuit according to claim 1, wherein the compensation unit comprises an alternative resistor string, one end of the alternative resistor string is connected to the output end of the current sampling unit, and the alternative resistor string is used for providing a compensation resistor corresponding to a load to output a loss voltage corresponding to the load.
3. The constant power output circuit of claim 2, wherein the alternative resistor string includes a plurality of series-connected analog resistor elements, each of the analog resistor elements including a base resistor and a control switch connected in parallel, each of the control switches for adjusting a resistance value of the corresponding analog resistor element.
4. The constant power output circuit according to claim 1, further comprising a power setting unit, wherein an output end of the power setting unit is connected to an input end of the signal output unit, and the power setting unit is further configured to be connected to a preset power resistor, wherein the power setting unit is configured to output a preset third quantization parameter to the signal output unit according to the power resistor, so that the signal output unit outputs an output signal corresponding to the compensated power according to the second quantization parameter and the third quantization parameter.
5. The constant power output circuit according to claim 1, wherein the current sampling unit includes a first switching tube, a second switching tube, and a third switching tube, a source electrode of the first switching tube is connected to one output end of the driving unit, a gate electrode of the second switching tube is connected to a drain electrode of the second switching tube and a gate electrode of the third switching tube, respectively, a source electrode of the second switching tube is connected to a source electrode of the third switching tube, and a drain electrode of the third switching tube is connected to the compensation unit.
6. The constant power output circuit according to claim 1, wherein the voltage sampling unit includes a voltage sampling end, a first resistor and a second resistor connected in series, the voltage sampling end is connected between the first resistor and the second resistor, the other end of the first resistor and the other end of the second resistor are used for being connected with a load, and the voltage sampling end is further connected to one input end of the first quantization unit.
7. The constant power output circuit according to claim 1, wherein the driving unit comprises a power switching tube and a peripheral driving circuit matched with the power switching tube, the power switching tube is connected to the peripheral driving circuit, an input end of the peripheral driving circuit is used for receiving the driving signal, and an output end of the peripheral driving circuit is used for outputting the driving signal to the power switching tube.
8. The constant power output circuit according to any one of claims 1 to 7, wherein the first quantization unit employs a subtractor circuit and the second quantization unit employs a multiplier circuit.
9. A wiring board comprising the constant power output circuit according to any one of claims 1 to 8.
10. An electronic cigarette comprising a constant power output circuit as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410068427.9A CN117762185A (en) | 2024-01-17 | 2024-01-17 | Constant power output circuit, circuit board and electronic cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410068427.9A CN117762185A (en) | 2024-01-17 | 2024-01-17 | Constant power output circuit, circuit board and electronic cigarette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117762185A true CN117762185A (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410068427.9A Pending CN117762185A (en) | 2024-01-17 | 2024-01-17 | Constant power output circuit, circuit board and electronic cigarette |
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| Country | Link |
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| CN (1) | CN117762185A (en) |
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2024
- 2024-01-17 CN CN202410068427.9A patent/CN117762185A/en active Pending
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