CN208837115U - Voltage follower circuit and electronic cigarette - Google Patents
Voltage follower circuit and electronic cigarette Download PDFInfo
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- CN208837115U CN208837115U CN201821533835.3U CN201821533835U CN208837115U CN 208837115 U CN208837115 U CN 208837115U CN 201821533835 U CN201821533835 U CN 201821533835U CN 208837115 U CN208837115 U CN 208837115U
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Abstract
The utility model discloses a kind of voltage follower circuit and electronic cigarettes, belong to field of electronic device.Voltage follower circuit includes: that control chip includes first control signal input terminal, second control signal input terminal, modulated signal output end, first control signal input terminal is electrically connected with the first control signal output end of suction detecting element, second control signal input terminal is connected with the second control signal output end of touch-control sensing chip, and the touch input pin of touch-control sensing chip is connected with Trackpad；Step-down switching chip includes the first path terminal, the first control terminal and alternate path end, and the first path terminal of step-down switching chip receives system power supply voltage, and the first control terminal of step-down switching chip is connected with the modulated signal output end of control chip；When first control signal input termination and/or second control signal input terminal receive significant level, chip controls alternate path end outputting drive voltage is controlled；The mode that solves the problems, such as to light a cigarette in electronic cigarette is single.
Description
Technical field
The utility model relates to field of electronic device, in particular to a kind of voltage follower circuit and electronic cigarette.
Background technique
Substitute of the electronic cigarette as cigarette, because its have to a certain extent using conveniently, safely, health, environmental protection etc.
Feature is becoming increasingly popular on the market.
Currently, only usual single offer microphone or key carry out the operation that lights a cigarette for user to electronic cigarette, electronic cigarette lights a cigarette
Mode is single.
Utility model content
The mode that lights a cigarette in order to solve the problems, such as electronic cigarette in the prior art is single, and the utility model embodiment provides one
Kind voltage follower circuit and electronic cigarette.The technical solution is as follows:
In a first aspect, providing a kind of voltage follower circuit, the voltage follower circuit includes:
Chip U6 is controlled, the control chip U6 includes first control signal input terminal 20, second control signal input terminal
21, the first control signal of modulated signal output end 23, the first control signal input terminal 20 and suction detecting element J3 is defeated
Outlet 24 is electrically connected, 37 phase of second control signal output end of the second control signal input terminal 21 and touch-control sensing chip U8
Connection, the touch input pin 25 of the touch-control sensing chip U8 are connected with Trackpad；
Step-down switching chip U2, the step-down switching chip U2 include the first path terminal 26, the first control terminal 27 and second
First path terminal 26 of path terminal 28, the step-down switching chip U6 receives system power supply voltage, the step-down switching chip U6
The first control terminal 27 with it is described control chip U6 modulated signal output end 23 be connected；
Wherein, when the first control signal input terminal 20 receives significant level and/or the second control signal is defeated
Enter end 21 when receiving significant level, the modulated signal output end 23 of the control chip U6 exports pulse-modulated signal to described
The first control terminal 27 of step-down switching chip U6, so that the first control terminal 27 of the step-down switching chip U6 is receiving
When the pulse width modulating signal of significant level, first path terminal 26 and the alternate path end 28 conducting are controlled, in turn
So that 28 output voltage values of alternate path end are less than the driving voltage of the voltage value of the system power supply voltage.
Optionally, the second control of the first enable signal output end 29 and second switch element Q11 of the control chip U6
End 30 processed is electrically connected, and the third path end 19 of the second switch element Q11 is grounded, and the 4th of the second switch element Q11 the
The cathode of path terminal 18 and motor is electrically connected, and the anode of the motor receives system power supply voltage；
Wherein, when the second control signal input terminal 21 receives significant level, the second switch element Q11 root
The third path end 19 is controlled according to the enable signal that the first enable signal output end 29 of the control chip U6 provides
It is connected with the fourth passage end 18, so that motor energization be made to work.
Optionally, the first control signal input terminal 20 of the control chip U6 passes through the first current-limiting resistance R5 and the pumping
The first control signal output end 24 for inhaling detecting element J3 is electrically connected；And/or
The second control signal input terminal 21 of the control chip U6 passes through the second current-limiting resistance R11 and the touch-control sensing
The second control signal output end 37 of chip U8 is connected；And/or
The first path terminal 26 of the step-down switching chip U2 passes through the third current-limiting resistance R10's and control chip U6
Modulated signal output end 23 is connected；And/or
The first control signal output end 24 of the suction detecting element J3 is grounded by the 4th current-limiting resistance R8.
Optionally, the first power supply receiving end 32 of the control chip U6 is grounded and by the by the first filter capacitor C2
Five current-limiting resistance R14 receive system power supply voltage；And/or
The first path terminal 26 of the step-down switching chip U2 is also grounded by the second filter capacitor C3；And/or
The touch input pin 25 of the touch-control sensing chip U8 is also grounded by third filter capacitor C6；And/or
The second source input terminal 33 of the touch-control sensing chip U8 receives system power supply voltage and passes through the 4th filtered electrical
Hold C7 ground connection.
Optionally, the alternate path end 28 of the step-down switching chip U2 is connected with heating wire, to export the driving electricity
Pressure drives the heating wire fever.
Optionally, the control chip U6 further includes the second enable signal output end 34, the first current receiv end 35, second
Current receiv end 36, the voltage follower circuit further include resistance value detection circuit 110, the second enabled letter of the control chip U6
Number output end 34 is connected with the resistance value detection circuit 110；
Wherein, the resistance value detection circuit 110 includes the 6th current-limiting resistance R23, the 7th current-limiting resistance R22, the first detection
Resistance R18, the second detection resistance R21, third detection resistance R20, the 5th filter capacitor C25, the 6th filter capacitor C24 and third
Switch element Q5；
The fifth passage end 38 of the third switch element Q5 receives the system power supply voltage, and passes through the 6th limit
Leakage resistance R23 is connected with the second enable signal output end 34 of the control chip U6, the third of the third switch element Q5
Control terminal 40 is connected by the 7th current-limiting resistance R22 with the second enable signal output end 34 of the control chip U6, institute
State the 6th path terminal 39 of third switch element Q5 the by the first detection resistance R18 and step-down switching chip U6
Two path terminals 28 are connected；
One end of the second detection resistance R21 by the 5th filter capacitor C25 be grounded, and with the control chip
The first current receiv end 35 of U6 is connected, and the of the other end of the second detection resistance R21 and the step-down switching chip U6
Two path terminals 28 are connected；
One end of the third detection resistance R20 by the 6th filter capacitor C24 be grounded, and with the control chip
The second current receiv end 36 of U6 is connected, and the of the other end of the third detection resistance R20 and the third switch element Q5
Six path terminals 39 are connected.
Optionally, the control chip U6 further includes at least one indicator light control terminal, each indicator light control terminal with
Indicating circuit 200 is connected；
Wherein, the indicating circuit 200 includes at least one the 8th current-limiting resistance R17, at least one light emitting diode D4,
The cathode of each light emitting diode D4 is controlled by an indicator light of a 8th current-limiting resistance R17 and the control chip U6
End is connected, and the anode of each light emitting diode D4 receives the system power supply voltage.
Optionally, the second control signal input terminal is electrically connected with key.
Optionally, the voltage follower circuit further includes the touch-control sensing chip U8 and/or the suction detecting element
J3。
Second aspect, provides a kind of electronic cigarette, and the electronic cigarette includes that first aspect and first aspect are any optional
Voltage follower circuit involved in embodiment.
Optionally, the electronic cigarette further includes rechargeable battery, and the rechargeable battery is used to provide the described system power supply
Voltage.
Optionally, the electronic cigarette further includes charging circuit 300, and the charging circuit 300 includes connector J2, charging core
Piece U4；
The charging chip U4 includes second source receiving end 41, charging voltage output end 42, and the second source receives
End 41 is connected by the connector J2 with external power supply, and the charging voltage output end 42 can extremely be filled for exporting charging voltage
The anode of battery.
Optionally, the charging circuit 300 further includes battery protection chip U1, and the battery protection chip U1 includes third
Power supply receiving end 51, the second ground terminal 52, radiating block end 53, charging test side 54；
The third power supply receiving end 51 of the battery protection chip U1 is connected with the anode of the rechargeable battery, the electricity
The second ground terminal of pond protection chip U1 is connected with the cathode of the rechargeable battery, the radiating block of the battery protection chip U1
End 53 is connected with the second ground terminal 52 of the battery protection chip U1, and the charging test side 54 of the battery protection chip U1 connects
Ground.
Technical solution provided by the embodiment of the utility model has the benefit that
By providing a kind of voltage follower circuit, voltage follower circuit includes: control chip U6, and control chip U6 includes the
One control signal input 20, second control signal input terminal 21, modulated signal output end 23, first control signal input terminal 20
It is electrically connected with the first control signal output end 24 of suction detecting element J3, second control signal input terminal 21 and touch-control sensing core
The second control signal output end 37 of piece U8 is connected, and the touch input pin 25 of touch-control sensing chip U8 is connected with Trackpad
It connects；Step-down switching chip U2, step-down switching chip U2 include the first path terminal 26, the first control terminal 27 and alternate path end 28,
The first path terminal 26 of step-down switching chip U6 receives system power supply voltage, the first control terminal 27 and the control of step-down switching chip U6
The modulated signal output end 23 of coremaking piece U6 is connected；Wherein, suction signal and touch-control sense are detected in suction detecting element J3
When chip U8 being answered to receive touch signal, control chip U6 is opened using control chip U1 output pulse width modulated signal to decompression
Chip U2 is closed, so that step-down switching chip U2 realizes decompression according to pulse width modulating signal, energy output voltage values are small
In the driving voltage VOUT of system power supply voltage VCC_BAT to such as heating wire is loaded, to provide a user in a manner of a variety of light a cigarette；
Solve the problems, such as that the mode that lights a cigarette of electronic cigarette in the related technology is single；Achieve the effect that abundant electronic cigarette lights a cigarette mode.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of circuit connection diagram of voltage follower circuit 100 provided in the utility model first embodiment；
Fig. 2 is a kind of electrical block diagram for voltage follower circuit 100 that second embodiment provides in the utility model；
Fig. 3 is a kind of motor connection schematic diagram that the utility model one embodiment provides；
Fig. 4 is the schematic diagram for the indicating circuit 200 that the utility model one embodiment provides；
Fig. 5 is the schematic diagram for the charging circuit 300 that the utility model one embodiment provides.
Specific embodiment
Further to illustrate that the utility model is the technical means and efficacy reaching predetermined purpose of utility model and being taken,
Below in conjunction with attached drawing and preferred embodiment, to according to the utility model proposes voltage follower circuit 100 and electronic cigarette it is specific
Embodiment, structure, feature and effect, detailed description is as follows.
Aforementioned and other technology contents, feature and effect in relation to the utility model, following cooperation with reference to schema compared with
Good embodiment can be clearly presented in being described in detail.By the explanation of specific embodiment, when can be to the utility model up to
It is able to more deeply and specifically understand at the technical means and efficacy that predetermined purpose is taken, however shown attached drawing is only to provide
Reference and description is used, and is not used to limit the utility model.
First embodiment
Fig. 1 is a kind of circuit connection diagram of voltage follower circuit 100 provided in the utility model first embodiment.Such as
Shown in Fig. 1, the voltage follower circuit 100 of the present embodiment includes control chip U6 and step-down switching chip U2.
Specifically, control chip U6 includes first control signal input terminal 20, second control signal input terminal 21, modulation letter
The first control signal of number output end 23, the first control signal input terminal 20 and suction detecting element J3 that control chip U6 exports
End 24 is connected, and the ground terminal GND ground connection of suction detecting element J3, the power supply receiving end VDD of suction detecting element J3 receives system
Unite supply voltage VCC_BAT.Wherein, suction detecting element can be that microphone, gas flow transducer, baroceptor etc. can
The detecting element whether aspirated for detecting user.
Control the second control signal input terminal 21 of chip U6 and the second control signal output end of touch-control sensing chip U8
37 are connected, and the touch input pin 25 of touch-control sensing chip U8 is connected with Trackpad (not shown), touch-control sensing core
The touch input pin 25 of piece U8 is also grounded by third filter capacitor C6, the second source input terminal 33 of touch-control sensing chip U8
It receives system power supply voltage VCC_BAT and is grounded by the 4th filter capacitor C7.
Specifically, step-down switching chip U2 includes the first path terminal 26, the first control terminal 27 and alternate path end 28, decompression
The first path terminal 26 of switch chip U6 receives system power supply voltage VCC_BAT, the first control terminal 27 of step-down switching chip U6
It is connected with the modulated signal output end 23 of control chip U6.
In a wherein embodiment, control chip U6 can be, but not limited to be model N76E003-TSSOP14*
ICP integrated chip, when controlling chip U6 is N76E003-TSSOP14*ICP integrated chip, first control signal input terminal 20
For AIN5/STADC/IC3/PWM3/P0.4 pin, modulated signal output end 23 is PWM1/FB/SDA/P1.4 pin, the second control
Signal input part 21 processed is AIN6/IC5/PWN5/P0.3.
In a wherein embodiment, step-down switching chip U2 can be, but not limited to be model AOS7423 PMOS
(positive channel Metal Oxide Semiconductor) pipe integrated chip.When step-down switching chip U2 is model
For AOS7423 PMOS tube when, the first path terminal 26 of step-down switching chip U2 is source electrode, and alternate path end 28 is drain electrode, the
One control terminal 27 is grid.In other embodiments, step-down switching chip U2 may be other models or other types of
Integrated chip, such as DTQ3205, the present embodiment do not limit this.
Specifically, when suction detecting element J3 detects suction signal, pass through first control signal output end 24 and export
Significant level (is set, can be high level, or low level) by system developer；When the touching of touch-control sensing chip U8
When touching input pin 25 and detecting touch signal, significant level is exported (by system development by second control signal output end 37
Personnel setting can be high level, or low level)；So that control chip U6 is controlled according to the significant level received
Its modulated signal output end 23 exports the first control terminal 27 of pulse-modulated signal to step-down switching chip U2, so that decompression
The first control terminal 27 of switch chip U2 is in the pulse for receiving significant level (such as the significant level of PMOS tube is low level)
When bandwidth modulation signals, controls the first path terminal 26 and alternate path end 28 is connected, so that alternate path end 28 exports electricity
The driving voltage VOUT of voltage value of the pressure value less than system power supply voltage VCC_BAT.
Optionally, the reset signal input terminal for controlling chip U6 is electrically connected with reset key.It is in control chip U6
When N76E003-TSSOP14*ICP integrated chip, the reset signal input terminal of control chip U6 can draw for P0.7/RXDAIN2
Foot.
In a wherein embodiment, the first control signal input terminal 20 of control chip U6 passes through the first current-limiting resistance
R5 is electrically connected with the first control signal output end 24 of suction detecting element J3, aspirates the 4th power supply receiving end of detecting element J3
VDD receives system power supply voltage VCC_BAT；The first control signal output end 24 for aspirating detecting element J3 passes through the 4th current limliting electricity
Hinder R8 ground connection.
In a wherein embodiment, the second control signal input terminal 21 of control chip U6 passes through the second current-limiting resistance
R11 is connected with the second control signal output end 37 of touch-control sensing chip U8.
In a wherein embodiment, the first path terminal 26 of step-down switching chip U2 passes through third current-limiting resistance R10
It is connected with the modulated signal output end 23 of control chip U6；First path terminal 26 is also grounded by the second filter capacitor C3.
In a wherein embodiment, control chip U6 further includes the first power supply receiving end 32 and ground terminal.Control core
The first power supply receiving end 32 of piece U6 is grounded by the first filter capacitor C2 and receives system power supply by the 5th current-limiting resistance R14
Voltage VCC_BAT.Optionally, control chip U6 the first power supply receiving end 32 and ground terminal can be, but not limited to be respectively
The VDD pin and GND pin of N76E003-TSSOP14*ICP integrated chip.
In a wherein embodiment, the alternate path end 28 of step-down switching chip U2 and heating wire (not shown)
It is connected, with outputting drive voltage VOUT driving heating wire fever, to realize atomizing functions.
Optionally, voltage follower circuit provided by the present application includes above-mentioned suction detecting element J3 and/or touch-control sensing core
Piece U8.
Voltage follower circuit 100 provided in this embodiment includes suction detecting element J3 and touch-control sensing chip U8,
When suction detecting element J3 detects that suction signal and/or touch-control sensing chip U8 receive touch signal, control chip U6 benefit
With control chip U1 output pulse width modulated signal to step-down switching chip U2, so that step-down switching chip U2 is according to arteries and veins
Bandwidth modulation signals are rushed to realize decompression, driving voltage VOUT of the energy output voltage values less than system power supply voltage VCC_BAT is extremely
Such as heating wire is loaded, to provide a user in a manner of a variety of light a cigarette；The mode that lights a cigarette for solving electronic cigarette in the related technology is single
The problem of；Achieve the effect that abundant electronic cigarette lights a cigarette mode.
In addition, in the present embodiment, can use the first current-limiting resistance R5, the second current-limiting resistance R11, third current-limiting resistance
R10 carries out current-limiting protection, to prevent circuit from damaging, so that the stability of voltage follower circuit 100 enhances.
Second embodiment
Fig. 2 is a kind of electrical block diagram for voltage follower circuit 100 that second embodiment provides in the utility model.
As shown in Fig. 2, the voltage follower circuit 100 and first embodiment of the present embodiment are essentially identical, and the difference is that: control core
Piece U6 further includes the second enable signal output end 34, the first current receiv end 35, the second current receiv end 36, voltage follower circuit
It further include resistance value detection circuit 110, the second enable signal output end 34 of control chip U6 is connected with resistance value detection circuit 110.
In a wherein embodiment, the second enable signal output end 34, the first current receiv end 35, the second electric current are connect
Receiving end 36 can be, but not limited to respectively N76E003-TSSOP14*ICP integrated chip P1.5/PWM5/IC7/SS pin,
AIN7IC1/PWM1/P1.1 pin, P3.0/INT0/OSCIN/AIN1 pin.
Wherein, resistance value detection circuit 110 includes the 6th current-limiting resistance R23, the 7th current-limiting resistance R22, the first detection resistance
R18, the second detection resistance R21, third detection resistance R20, the 5th filter capacitor C25, the 6th filter capacitor C24 and third switch
Element Q5.
The fifth passage end 38 of third switch element Q5 receives system power supply voltage VCC_BAT, and passes through the 6th current limliting electricity
Resistance R23 is connected with the second enable signal output end 34 for controlling chip U6；The third control terminal 40 of third switch element Q5 passes through
7th current-limiting resistance R22 is connected with the second enable signal output end 34 of control chip U6, and the 6th of third switch element Q5 is logical
Terminal 39 is connected by the first detection resistance R18 with the alternate path end 28 of step-down switching chip U6.
One end of second detection resistance R21 is grounded by the 5th filter capacitor C25, and the first electricity with control chip (U6)
It flows receiving end 35 to be connected, the other end of the second detection resistance R21 is connected with the alternate path end 28 of step-down switching chip U6；Third
One end of detection resistance R20 is grounded by the 6th filter capacitor C24, and 36 phase of the second current receiv end with control chip U6
Even, the other end of third detection resistance R20 is connected with the 6th path terminal 39 of third switch element Q5.
In a wherein embodiment, third switch element Q5 can be PNP type triode, third switch element Q5's
Fifth passage end 38 is emitter, and the third control terminal 40 of third switch element Q5 is base stage, the 6th of third switch element Q5 the
Path terminal 39 is collector.In other embodiments, third switch element Q5 may be other types of transistor (such as
PMOS tube) etc..
It is illustrated so that third switch element Q5 is PNP type triode as an example below.Specifically, when first control signal is defeated
Enter end 20, second control signal input terminal 21 do not receive be equipped in significant level and electronic cigarette atomizer (alternatively, fever
Silk) when, the first enable signal output end 29 of control chip U6 exports low level signal, so that third switch element Q5 is led
It is logical, and the first current receiv end 35, the second current receiv end 36 that control chip U6 are respectively received and flow through the second detection resistance
The electric current of R21 and third detection resistance R20, and the electricity received according to the first current receiv end 35 and the second current receiv end 36
Flow the resistance value that difference obtains heating wire.
The voltage follower circuit 100 of the present embodiment includes resistance value detection circuit 110, therefore can be according to resistance value detection circuit
The current differential of 110 outputs obtains the resistance value of heating wire, so as to according to the pulse width tune of the resistance value of heating wire adjustment output
The duty ratio of signal processed, so as to adjust the voltage value of the driving voltage VOUT of output to heating wire, flexibility is further enhanced.
In an example of any of the above-described embodiment, provided referring to Figure 1 to Fig. 3, Fig. 3 for the utility model embodiment
A kind of motor connection schematic diagram.Control the second of the first enable signal output end 29 and second switch element Q11 of chip U6
Control terminal 30 is electrically connected, and the third path end 19 of second switch element Q11 is grounded, the fourth passage end of second switch element Q11
18 are electrically connected with the cathode MA- of motor, and the positive MA+ of motor receives system power supply voltage VCC_BAT.
Wherein, when second control signal input terminal 21 receives significant level, second switch element Q11 is according to control core
The enable signal control third path end 19 and fourth passage end 18 that the first enable signal output end 29 of piece U6 provides are connected, from
And motor energization is made to work, to prompt user effective to the touch of Trackpad and simulate the feel of physical button.
Optionally, in the voltage follower circuit 100 that any of the above-described a embodiment provides, control chip U6 further includes second
Control signal input is electrically connected with key；So that user can by operation button, operation Trackpad, aspirate in it is any
Mode lights a cigarette.
Optionally, in the voltage follower circuit 100 that any of the above-described a embodiment provides, control chip U6 further includes at least
One indicator light control terminal, each indicator light control terminal are connected with indicating circuit.
Wherein, indicating circuit 200 includes at least one the 8th current-limiting resistance R17, at least one light emitting diode D4, each
The cathode of light emitting diode D4 is connected by a 8th current-limiting resistance R17 with an indicator light control terminal of control chip U6,
The anode of each light emitting diode D4 receives system power supply voltage VCC_BAT.
Fig. 1, Fig. 2 and Fig. 4 are please referred to, Fig. 4 is the signal for the indicating circuit 200 that the utility model one embodiment provides
Figure includes three indicator light control terminals (pin 5, pin 9 and the pin 12 of control chip), indicating circuit to control chip U6
It is illustrated including 3 light emitting diodes.Optionally, the luminescent color of this 3 light emitting diodes can for respectively it is red,
Blue, green three color.Optionally, this 3 light emitting diodes close on setting and form lamp group.
Optionally, control chip U6 can control the lamp group and show when second control signal input terminal inputs significant level
First color, alternatively, one of light emitting diode is lighted, to prompt user effective to the touch of Trackpad.
Optionally, controller chip U6 it is aobvious can to control the lamp group when first control signal input terminal inputs significant level
Show the second color, alternatively, one of light emitting diode is lighted, to prompt user aspirating.
Optionally, control chip U6 can also control the point of at least one light emitting diode D4 by indicator light control terminal
It is bright, to prompt the electricity of rechargeable battery or prompt the output power of electronic cigarette.For example, the electricity of rechargeable battery and luminous two
The brightness of pole pipe D4 is positively correlated；Light emitting diode D4's lights quantity in positive in the electricity and indicating circuit of rechargeable battery
It closes.For another example the output power of electronic cigarette and the brightness of light emitting diode D4 are positively correlated, the output power of electronic cigarette and instruction
The quantity of lighting of light emitting diode D4 is positively correlated in circuit.
Optionally, controller U6 either end can be received in first control signal input terminal, second control signal input terminal
It when to significant level, controls the lamp group and shows third color, alternatively, one of light emitting diode is lighted, to prompt user electric
The sub- atomization device of cigarette is carrying out atomization work.
Optionally, control chip U6 can also indicate electricity by controlling the display color of at least one light emitting diode D4
The battery capacity of sub- cigarette, output power size, suction time length, extracting force size etc., display color is by research staff
It is set when factory, or by user's sets itself.
In addition, control chip U6 can be combined with light emitting diode light number, brightness, color these three parameters refer to
Show the battery capacity of electronic cigarette, output power size, suction time length, extracting force size etc., the present embodiment to this not
It limits.
In an example of any of the above-described embodiment, electronic cigarette further includes charging circuit 300.As shown in figure 5, charging electricity
Road 300 includes connector J2, charging chip U4.
Specifically, charging chip U4 includes second source receiving end 41, charging voltage output end 42, second source receiving end
41 are connected by connector J2 with external power supply, and charging voltage output end 42 is used to export charging voltage to rechargeable battery just
Pole BAT ﹢.
In a wherein embodiment, second source receiving end 41, the charging core of charging voltage output end 42 respectively
The VCC pin and OUT pin of piece U4.
In a wherein embodiment, charging circuit 300 further includes battery protection chip U1, battery protection chip U1 packet
Include third power supply receiving end 51, ground terminal 52, radiating block end 53, charging test side 54.
Specifically, the third power supply receiving end 51 of battery protection chip U1 is connected with the positive BAT ﹢ of rechargeable battery, electricity
Pond protection chip U1 ground terminal 52 be connected with the cathode BAT ﹣ of rechargeable battery, the radiating block end 53 of battery protection chip U1 and
The ground terminal 52 of battery protection chip U1 is connected, and the charging test side 54 of battery protection chip U1 is grounded.Battery protection chip U1
Radiating block for reducing the temperature of battery protection chip U1, avoid high temperature from burning out.The radiating block end 53 of battery protection chip U1
It is connected with the ground terminal 52 of battery protection chip U1, increases the contact area of battery protection chip U1, so that voltage output is electric
The overcurrent capability on road 100.
Specifically, the battery protection chip U1 of the present embodiment can be used for preventing rechargeable battery overcharge or overdischarge,
The ground terminal 52 of battery protection chip U1 is connected with the cathode BAT ﹣ of rechargeable battery, the charging test side of battery protection chip U1
54 ground connection, then the cathode BAT ﹣ of rechargeable battery is not directly grounded, and the cathode of rechargeable battery is arranged in battery protection chip U1
BAT ﹣ needs the cathode BAT ﹣ of rechargeable battery by leading between systematically, and when rechargeable battery needs charge or discharge
Logical battery protection chip U1 is connected to the ground, and therefore, the battery protection chip U1 in voltage follower circuit 100 can be by detection certainly
The pin or the current or voltage on element of body, whether decision circuitry state, which is in, overcharges or over-discharge state, and then is overcharging
Or over-discharge state disconnect rechargeable battery cathode BAT ﹣ and systematically between connection, so as to protect chargeable electricity
Pond.
In a wherein embodiment, the third power supply receiving end 51 of battery protection chip U1 and the 7th filter capacitor C4
First end be connected, the second end of the 7th filter capacitor C4 is connected with the cathode BAT ﹣ of rechargeable battery.5th filter capacitor
The seven system power supply voltage VCC_BAT that can be used to the positive BAT ﹢ output to rechargeable battery are filtered.
In a wherein embodiment, the model XB6006A2 of battery protection chip U1.As shown in Fig. 2, battery is protected
The third power supply receiving end 51 for protecting chip U1 is vdd terminal, and ground terminal 52 is the end GND, and radiating block end 53 is the end EPAD/GND, charging
Test side 54 is the end VM.
The electronic cigarette of the utility model can be automatic to disconnect rechargeable battery and charging chip U4 by battery protection chip U1
Or the connection between discharge circuit, it is therefore prevented that rechargeable battery overcharge or the generation of overdischarge, to protect chargeable electricity
Pond and electronic cigarette.
The voltage follower circuit 100 and electronic cigarette of the utility model utilize control chip U6 output pulse width modulated signal
It can be exported to step-down switching chip U2 so that step-down switching chip U2 realizes decompression according to pulse width modulating signal
Driving voltage VOUT of the voltage value less than system power supply voltage VCC_BAT extremely loads such as heating wire, therefore flexibility is good, and by
In only with control chip U6 and step-down switching chip U2 energy outputting drive voltage VOUT, therefore structure is simple.
In addition, electronic cigarette may include rechargeable battery in the utility model embodiment, not chargeable electricity may also comprise
Pond, the present embodiment do not limit this.The type of battery can be lithium battery, alkaline dry battery, nickel-metal hydride battery, lead in electronic cigarette
Acid accumulator, iron-nickel storage battery, metal oxide battery, zinc-silver storage battery, zinc-nickel storage battery, hydrogen-oxygen fuel cell, the sun
Energy battery etc. can provide the chargeable or non-rechargeable battery of electric energy.
More than, it is only the preferred embodiment of the utility model, limit in any form not is made to the utility model
System, although the utility model has been disclosed with preferred embodiment as above, is not intended to limit the utility model, any to be familiar with sheet
Technical professional is not departing within the scope of technical solutions of the utility model, does when using the technology contents of the disclosure above
A little change or it is modified to the equivalent embodiment of equivalent variations out, but all without departing from the content of the technical scheme of the utility model, according to
According to the technical essence of the utility model any simple modification, equivalent change and modification to the above embodiments, still fall within
In the range of technical solutions of the utility model.
Claims (12)
1. a kind of voltage follower circuit, which is characterized in that the voltage follower circuit includes:
It controls chip (U6), the control chip (U6) includes first control signal input terminal (20), second control signal input
Hold (21), modulated signal output end (23), the first control signal input terminal (20) and the first of suction detecting element (J3)
Control signal output (24) electrical connection, the second control of the second control signal input terminal (21) and touch-control sensing chip (U8)
Signal output end (37) processed is connected, and the touch input pin (25) of the touch-control sensing chip (U8) is connected with Trackpad；
Step-down switching chip (U2), the step-down switching chip (U2) include the first path terminal (26), the first control terminal (27) and
First path terminal (26) at alternate path end (28), the step-down switching chip (U6) receives system power supply voltage, the decompression
The first control terminal (27) of switch chip (U6) is connected with the modulated signal output end (23) of control chip (U6)；
Wherein, when the first control signal input terminal (20) receives significant level and/or second control signal input
When end (21) receives significant level, modulated signal output end (23) the output pulse-modulated signal of control chip (U6) is extremely
The first control terminal (27) of the step-down switching chip (U6), so that the first control terminal of the step-down switching chip (U6)
(27) in the pulse width modulating signal for receiving significant level, first path terminal (26) and the alternate path are controlled
(28) conducting is held, so that alternate path end (28) output voltage values are less than the voltage value of the system power supply voltage
Driving voltage.
2. voltage follower circuit according to claim 1, which is characterized in that the enabled letter of the first of control chip (U6)
Number output end (29) is electrically connected with the second control terminal (30) of second switch element (Q11), the second switch element (Q11)
Third path end (19) ground connection, the fourth passage end (18) of the second switch element (Q11) and the cathode of motor are electrically connected,
The anode of the motor receives system power supply voltage；
Wherein, when the second control signal input terminal (21) receives significant level, second switch element (Q11) root
The third path is controlled according to the enable signal that the first enable signal output end (29) of control chip (U6) provides
(19) and the fourth passage end (18) are held to be connected, so that motor energization be made to work.
3. voltage follower circuit according to claim 1, which is characterized in that the first control letter of control chip (U6)
The first control signal output end that number input terminal (20) passes through the first current-limiting resistance (R5) and suction detecting element (J3)
(24) it is electrically connected；And/or
The second control signal input terminal (21) of control chip (U6) passes through the second current-limiting resistance (R11) and the touch-control sense
The second control signal output end (37) of chip (U8) is answered to be connected；And/or
The first path terminal (26) of the step-down switching chip (U2) passes through third current-limiting resistance (R10) and the control chip
(U6) modulated signal output end (23) is connected；And/or
The first control signal output end (24) of suction detecting element (J3) is grounded by the 4th current-limiting resistance (R8).
4. voltage follower circuit according to claim 1 or 3, which is characterized in that the first electricity of control chip (U6)
Source receiving end (32) is grounded by the first filter capacitor (C2) and receives system power supply voltage by the 5th current-limiting resistance (R14)；
And/or
The first path terminal (26) of the step-down switching chip (U2) is also grounded by the second filter capacitor (C3)；And/or
The touch input pin (25) of the touch-control sensing chip (U8) is also grounded by third filter capacitor (C6)；And/or
The second source input terminal (33) of the touch-control sensing chip (U8) receives system power supply voltage and passes through the 4th filtered electrical
Hold (C7) ground connection.
5. voltage follower circuit according to claim 1, which is characterized in that the second of the step-down switching chip (U2) is logical
Terminal (28) is connected with heating wire, drives the heating wire fever to export the driving voltage.
6. voltage follower circuit according to claim 1, which is characterized in that the control chip (U6) further includes second making
Energy signal output end (34), the first current receiv end (35), the second current receiv end (36), the voltage follower circuit further include
Resistance value detection circuit (110), the second enable signal output end (34) of control chip (U6) and the resistance value detection circuit
(110) it is connected；
Wherein, the resistance value detection circuit (110) includes the 6th current-limiting resistance (R23), the 7th current-limiting resistance (R22), the first inspection
Measuring resistance (R18), the second detection resistance (R21), third detection resistance (R20), the 5th filter capacitor (C25), the 6th filtered electrical
Hold (C24) and third switch element (Q5)；
The fifth passage end (38) of the third switch element (Q5) receives the system power supply voltage, and passes through the 6th limit
Leakage resistance (R23) is connected with the second enable signal output end (34) of control chip (U6), the third switch element
(Q5) the second enable signal that third control terminal (40) passes through the 7th current-limiting resistance (R22) and control chip (U6)
Output end (34) is connected, and the 6th path terminal (39) of the third switch element (Q5) passes through first detection resistance (R18)
It is connected with the alternate path end (28) of the step-down switching chip (U6)；
One end of second detection resistance (R21) by the 5th filter capacitor (C25) be grounded, and with the control chip
(U6) the first current receiv end (35) is connected, the other end and the step-down switching chip of second detection resistance (R21)
(U6) alternate path end (28) is connected；
One end of the third detection resistance (R20) by the 6th filter capacitor (C24) be grounded, and with the control chip
(U6) the second current receiv end (36) is connected, the other end and the third switch element of the third detection resistance (R20)
(Q5) the 6th path terminal (39) is connected.
7. voltage follower circuit according to claim 1, which is characterized in that the control chip (U6) further includes at least one
A indicator light control terminal, each indicator light control terminal are connected with indicating circuit (200)；
Wherein, the indicating circuit (200) includes at least one the 8th current-limiting resistance (R17), at least one light emitting diode
(D4), the cathode of each light emitting diode (D4) passes through the 8th current-limiting resistance (R17) and the one of control chip (U6)
A indicator light control terminal is connected, and the anode of each light emitting diode (D4) receives the system power supply voltage.
8. voltage follower circuit according to claim 1, which is characterized in that the voltage follower circuit further includes the touching
Control induction chip (U8) and/or the suction detecting element (J3).
9. a kind of electronic cigarette, which is characterized in that the electronic cigarette includes that the voltage as described in claim 1 to 8 any one is defeated
Circuit out.
10. electronic cigarette as claimed in claim 9, which is characterized in that the electronic cigarette further includes rechargeable battery, described to fill
Battery is used to provide the described system power supply voltage.
11. electronic cigarette as claimed in claim 9, which is characterized in that the electronic cigarette further includes charging circuit (300), described
Charging circuit (300) includes connector (J2), charging chip (U4)；
The charging chip (U4) includes second source receiving end (41), charging voltage output end (42), and the second source connects
Receiving end (41) is connected by the connector (J2) with external power supply, and the charging voltage output end (42) is for exporting charging electricity
It is depressed into the anode of rechargeable battery.
12. electronic cigarette as claimed in claim 11, which is characterized in that the charging circuit (300) further includes battery protection core
Piece (U1), the battery protection chip (U1) include third power supply receiving end (51), the second ground terminal (52), radiating block end
(53), test side (54) are charged；
The third power supply receiving end (51) of the battery protection chip (U1) is connected with the anode of the rechargeable battery, the electricity
Second ground terminal of pond protection chip (U1) is connected with the cathode of the rechargeable battery, and the battery protection chip (U1) dissipates
Heat block end (53) is connected with the second ground terminal (52) of the battery protection chip (U1), and battery protection chip (U1's) fills
Electro-detection end (54) ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821533835.3U CN208837115U (en) | 2018-09-19 | 2018-09-19 | Voltage follower circuit and electronic cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821533835.3U CN208837115U (en) | 2018-09-19 | 2018-09-19 | Voltage follower circuit and electronic cigarette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208837115U true CN208837115U (en) | 2019-05-10 |
Family
ID=66372069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821533835.3U Active CN208837115U (en) | 2018-09-19 | 2018-09-19 | Voltage follower circuit and electronic cigarette |
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| Country | Link |
|---|---|
| CN (1) | CN208837115U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020057474A1 (en) * | 2018-09-19 | 2020-03-26 | 常州市派腾电子技术服务有限公司 | Voltage output circuit and electronic cigarette |
| WO2021017629A1 (en) * | 2019-07-29 | 2021-02-04 | 惠州市新泓威科技有限公司 | Electronic cigarette with manual and automatic double start and stop functions and control method therefor |
-
2018
- 2018-09-19 CN CN201821533835.3U patent/CN208837115U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020057474A1 (en) * | 2018-09-19 | 2020-03-26 | 常州市派腾电子技术服务有限公司 | Voltage output circuit and electronic cigarette |
| US11889863B2 (en) | 2018-09-19 | 2024-02-06 | Changzhou Patent Electronic Technology Co., LTD | Voltage output circuit and electronic cigarette |
| WO2021017629A1 (en) * | 2019-07-29 | 2021-02-04 | 惠州市新泓威科技有限公司 | Electronic cigarette with manual and automatic double start and stop functions and control method therefor |
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