CN107647477A

CN107647477A - NMOS tube drive control circuit, chip, device and driving method

Info

Publication number: CN107647477A
Application number: CN201611258930.2A
Authority: CN
Inventors: 张海波; 柏志彬; 李盛峰
Original assignee: SHENZHEN HOTCHIP TECHNOLOGY Co Ltd
Current assignee: SHENZHEN HOTCHIP TECHNOLOGY Co Ltd
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2018-02-02
Anticipated expiration: 2036-12-30
Also published as: CN107647477B

Abstract

A kind of to be used for by NMOS tube drive control circuit, chip, device and the driving method of driving load and external power source application scenarios altogether, by being grounded by driving load, the drain electrode of NMOS tube electrically connects the source electrode of NMOS tube with the positive pole of external power source；Drive control module receives external drive control signal, drive control module is transformed into the current potential higher than gate drive potential threshold value according to the grid potential of external drive control signal control NMOS tube, the gate drive potential threshold value is externally fed source voltage and the grid source cut-in voltage sum of outside NMOS tube, to ensure the lasting driving force of NMOS tube.Heating wire particularly suitable for electronic cigarette needs and the application scenarios of battery altogether, and cost and power consumption are reduced compared to PMOS drivings, economic and environment-friendly.

Description

NMOS tube drive control circuit, chip, device and driving method

Technical field

The present invention relates to the drive control circuit based on metal-oxide-semiconductor and device；The more particularly to drive control based on NMOS tube Circuit and device, more particularly to NMOS tube drive circuit circuit and dress when electronic cigarette heating wire and battery common ground connection Put.

Background technology

In the prior art, the electronic cigarette for smoking cessation or cigarette substitute generally includes to hold nicotine or substitutes the cigarette of solution Pipe, for by nicotine or the atomization heater and battery for being powered for the device for substituting solution atomization and heating.Mist Fog can be transformed into the liquid nicotine in smoke pipe or replacement solution and be heated to certain temperature by changing heater, so as to Allow user to have a kind of sensation of similar smoking in suction, realize " swallowing clouds and blowing out fog ".

In actual applications, usually used is multistage metal smoke pipe to electronic cigarette, and phase is set respectively in each section of metal smoke pipe The functional part answered, generally have in one section of metal smoke pipe and be provided with battery, need to be provided with this section of pipe and charged for battery The USB interface of input；Generally also have and atomization heater is provided with one section of metal smoke pipe, this section of tube interior is provided with mist Change heater strip；And due to electronic cigarette small volume itself, short circuit is very easy between two sections of pipes.For safety and simple for structure Property consideration, it will usually will atomization heater strip electrically connected altogether with charging input end mouth, that is, be atomized heater strip be total to battery Ground electrically connects.If do not electrically connected altogether, insulated ring must be installed additional between the metal smoke pipe of different sections, and in actual applications The short circuit between different sections of metal smoke pipes is prevented, which not only adds part, structure and the complexity of assembling, Add cost so that the fault rate of operation increases, and also influences user's experience.To avoid above mentioned problem, it will usually using such as Circuit connecting mode shown in Fig. 1, that is, the power tube for being used to drive being atomized in heater connect anode, are atomized heater strip Connected altogether with battery.Because all input and output are all dual-ports, after ground wire shares, only remaining non-ground-end can be with For carrying out signal input, output control, that is, pass through the positive pole of battery and the ungrounded end of atomization heater strip.

Be atomized drive control of the heater strip in electronic cigarette, generally be MOS including NMOS tube and PMOS Pipe.Because PMOS is turned on when gate source voltage is negative value, so for this battery and being atomized heater strip common ground connection Situation is especially suitable for.It is as long as the source electrode of PMOS is connected with anode, draining for PMOS is non-with atomization heater strip Earth terminal electrically connects, when the grid of PMOS is high level relative to ground, the drain electrode of PMOS and source electrode it is separated, I.e. anode by PMOS to being turned off between the ungrounded end of atomization heater strip, when the grid of metal-oxide-semiconductor relative to ground is low During level, anode connects to electric current between the ungrounded end of atomization heater strip.This switching pmos controling circuit structure Simply, shortcoming is that the internal resistance of PMOS is larger, and especially the NMOS tube of the relatively equal price of conducting resistance is big, so that circuit Loss of loss when especially turning on it is larger, and PMOS cost is also higher.

If directly replacing PMOS using NMOS tube, i.e. the drain electrode of NMOS tube is connected with anode, the source of NMOS tube Pole is connected with being atomized the ungrounded end of heater strip, in electric original state on circuit, the source electrode of NMOS tube be it is low level, this When, the grid of NMOS tube only needs a high level, and NMOS tube can turn on；But now the grid of NMOS tube is and battery Positive pole is directly connected to power taking, so that the maximum drive voltage of NMOS tube grid is not over cell voltage, when NMOS tube is led After logical, the source electrode of NMOS tube, the level of drain and gate are equal to anode level, and the gate source voltage of such NMOS tube is Zero, NMOS tube cut-off, work can not continue.

The chip for being used for electronic cigarette control in the prior art mainly has two types：One of them is booster type, is used BOOST booster circuits, cell voltage is raised, and by adjusting feedback resistance ratio, adjusts the output voltage of booster circuit to control Power output processed, advantage are that output is to stablize smooth voltage, and small with cell voltage change, and shortcoming is circuit complexity, and outside needs Multiple power tubes, inductance, electric capacity are wanted, cost is very high, and boost process electric current needs to flow through multiple devices, and power attenuation is very Greatly；Two wherein are direct drive type as shown in Figure 1, as shown in figure 1, because usual heating wire must be grounded, so mostly Switching tube is used as using PMOS power tubes connection battery-end, is directly heating wire power supply during unlatching, passes through accounting for for adjusting switch pipe Sky compares to adjust power output.Advantage is to need external devices few, it is only necessary to which a power tube, cost are very low.Shortcoming is output For square wave, power output easily changes with cell voltage, and directly drives grid, when cell voltage reduces, work(with cell voltage Rate pipe conduction impedance significantly rises, and influences delivery efficiency.Compared to NMOS power tubes, PMOS power tubes are also expensive, conducting The shortcomings that impedance is high.And if using NMOS tube, lied prostrate because its grid only up to be equal to cell voltage BAT, in order to ensure work( Rate pipe is opened, and must maintain more than 1 volt between its gate source voltage, i.e., load end only up to draw high to（BAT-1）Volt, otherwise NMOS tube can not open, it is meant that bear more than 1 volt pressure drop, such pressure drop all the time between NMOS power tubes source electrode and drain electrode So that conducting resistance is larger, power output and efficiency are had a strong impact on.

Explanation of nouns：

NMOS is Negative channel-Metal-Oxide-Semiconductor abbreviation, i.e. N-channel metal oxide Semiconductor；

PMOS is Positive channel-Metal-Oxide-Semiconductor abbreviation, i.e. P-channel metal oxide Semiconductor；

PWM is English Pulse Width Modulation abbreviation, and Chinese implication is pulse width modulation；Pulsewidth width modulated Formula（PWM）Switching mode mu balanced circuit is in the case where control circuit output frequency is constant, by adjusting its dutycycle, so as to reach To the purpose of regulated output voltage.

The content of the invention

The technical problem to be solved in the present invention is to avoid above-mentioned the deficiencies in the prior art part and propose a kind of NMOS tube Drive control circuit, chip, device and driving method, in the application electrically connected altogether by driving load and its externally fed source The middle NMOS tube that conducting internal resistance low price can be used less expensive carries out the driving of heating resistance wire.

Solving the technical scheme that above-mentioned technical problem uses is：A kind of drive control electricity for NMOS tube drive control Road, including boost capacitor connectivity port for being connected with outside boost capacitor, for same source electrode through being grounded by driving load The driving port of outside NMOS tube electrical connection and the driving signal input mouth for driving control signal input；The driving control Two terminals of the boost capacitor connectivity port of circuit processed are respectively used to electrically connect with the both positive and negative polarity of outside boost capacitor；The drive Two terminals of the driving port of dynamic control circuit are respectively used to electrically connect with the grid of outside NMOS tube and drain electrode；For with it is outer The drive terminal of the drain electrode connection of portion's NMOS tube also electrically connects for the positive pole with externally fed source simultaneously；External drive signal is defeated Enter the drive control circuit by the charging direction to outside boost capacitor and charging SECO, outside NMOS will be output to The grid potential of pipe is transformed into the current potential higher than gate drive potential threshold value, and the gate drive potential threshold value supplies to be outside Supply voltage and the grid source cut-in voltage sum of outside NMOS tube.

When external drive signal inputs the drive control circuit by the charging direction to outside boost capacitor and charging Sequence is controlled, and the grid potential for being output to outside NMOS tube is transformed into the current potential of twice of externally fed source voltage.

The drive control circuit includes being used for the drive signal amplifier of external drive signal inversion and amplification, used In the first electronic switch and the second electronic switch of the control of outside boost capacitor;The output end of the drive signal amplifier is used for Electrically connected with the negative pole of outside boost capacitor, the input of the drive signal amplifier is used to connect with external drive signal source External drive signal is obtained, the external drive signal is periodicity low and high level drive signal；First electronic switch One end is used for and the positive pole of outside boost capacitor electrically connects, and the other end of first electronic switch is used as drive control electricity The power input on road, and electrically connected with the positive pole of power supply；One end of second electronic switch is used for and outside boosting The positive pole electrical connection of electric capacity, and this one end of second electronic switch and for the electrical connection of the positive pole of outside boost capacitor First electronic switch one end electrical connection；The other end of second electronic switch is used for and the grid of outside NMOS tube Electrical connection；First electronic switch and second electronic switch are controlled by defeated from the drive signal amplifier in The periodicity low and high level drive signal entered；When the periodicity low and high level drive signal is in the first phase configuration state, institute The first electronic switch closure, the second electronic switch shut-off are stated, the both end voltage of outside boost capacitor is positively charged to electricity Source voltage；When the periodicity low and high level drive signal is in second of phase configuration state, the first electronic switch shut-off, institute The second electronic switch closure is stated, the both end voltage of outside boost capacitor, which is reversed, charges to supply voltage, therefore is output to outside The grid potential value of NMOS tube is transformed into twice of externally fed source magnitude of voltage.

The periodicity low and high level drive signal is the unipolarity square-wave signal that dutycycle is 5% to 95%.

The periodicity low and high level drive signal is the unipolarity square-wave signal that dutycycle is 50%.

Second electronic switch includes No. three PMOSs and No. four NMOS tubes；The drain electrode of No. three PMOSs with it is described The drain electrode electrical connection of No. four NMOS tubes, the source electrode of No. three PMOSs is used for and the positive pole of outside boost capacitor electrically connects, institute The grid for stating No. three PMOSs is used to electrically connect with the positive pole of power supply；The drain electrode of No. four NMOS tubes is used for and outside The grid electrical connection of NMOS tube, the source ground of No. four NMOS tubes, the grid of No. four NMOS tubes are believed with the driving The electrical connection of number amplifier in, i.e., the grid of described No. four NMOS tubes are used for the defeated of external cycles low and high level drive signal Enter.

First electronic switch includes No. six PMOSs, No. seven PMOSs, No. five NMOS tubes（NM5）With No.1 resistance （R1）；The drain electrode of No. six PMOSs is used for and the positive pole in externally fed source electrically connects, the drain electrodes of No. seven PMOSs be used for and The positive pole electrical connection of outside boost capacitor；The source electrode of No. six PMOSs electrically connects with the source electrode of No. seven PMOSs, and And electrically connected with one end of the No.1 resistance, the other end of the No.1 resistance and the grid and seven of No. six PMOSs The grid electrical links of number PMOS, and electrically connected with the drain electrode of No. five NMOS tubes；The grid of No. five NMOS tubes with The drive signal amplifier in electrical connection, i.e., the grid of described No. five NMOS tubes drive for external cycles low and high level The access of dynamic signal；The source electrode of No. five NMOS tubes is electrically connected with the positive pole of a reference current source, and the reference current source is born Pole is grounded.

The drive signal amplifier is an inverting amplifier, including No.1 NMOS tube and No. two PMOSs；Described No. two The source electrode of PMOS is used for and the positive pole in externally fed source electrically connects；The drain electrode of No. two PMOSs and the No.1 NMOS tube Drain electrode electrical connection, as the drive signal amplifier out, and the drive signal amplifier out is used for Electrically connected with the negative pole of outside boost capacitor；The grid of the No.1 NMOS tube and the electrical connection of the grid of No. two PMOSs are used Make the drive signal amplifier in, for accessing external cycles low and high level drive signal；The No.1 NMOS tube Source ground.

Solve the technical scheme that above-mentioned technical problem uses and can also be a kind of electronics based on above-mentioned drive control circuit Cigarette control chip, including the power output adjustment module for producing and adjusting for periodicity low and high level drive signal；It is described defeated Go out power conditioning module and drive control circuit electrical connection, and will be periodically high caused by the power output adjustment module Low level drive signal is sent to the driving signal input of the drive control circuit；The power output adjustment module is also used In the PWM duty cycle of controlling cycle low and high level drive signal, the drive control circuit is according to input periodically height electricity The PWM duty cycle adjustment of flat drive signal is output to the control signal of outside NMOS tube, so as to realize the power of outside NMOS tube Adjustment.

The electronic cigarette control chip includes the main control module for the control of electronic cigarette control chip system, for electronics Charging circuit module, the clock oscillator module and use for producing electronic cigarette control chip work clock of battery charging in cigarette In the indicating circuit module of electronic cigarette control chip outer coupling portion driving；The power output adjustment module, the charging Circuit module, the clock oscillator module and the indicating circuit module all electrically connect with the main control module and receive master The control of control module.

Solve the technical scheme that above-mentioned technical problem uses and can also be a kind of chip control of above-mentioned electronic cigarette control chip Electronic cigarette processed, including for providing the battery of electric energy, the heating wire for being atomized heating, the driving NMOS for driving heating wire Pipe and the boost capacitor for driving NMOS tube gate boost；The electronic cigarette control chip passes through outside boost capacitor connection end Mouth is connected with the both positive and negative polarity of boost capacitor；The electronic cigarette control chip by external power input it is sub with the battery just Pole electrically connects；The electronic cigarette control chip is electrically connected by controlling potential lead-out terminal with the grid of the driving NMOS tube； The positive pole of the battery electrically connects with the drain electrode of the driving NMOS tube, the source electrode and the heating wire of the driving NMOS tube One end electrically connects, the other end ground connection of the heating wire；The collaboration production of both the electronic cigarette control chip and the boost capacitor The function of raw voltage-multiplying circuit, the grid potential for being output to the driving NMOS tube is transformed into higher than the gate drive potential door Limit value.

Electronic cigarette control chip described in described chip controls electronic cigarette is provided with for inputting the outer of external control signal Portion's control signal input, and it is output to the driving NMOS tube grid according to from the external control signal adjustment of terminal input The current potential of the drive signal of pole, the driving current control of the heating wire is realized, so as to control the atomization of the heating wire to generate heat Power.

Solve the technical scheme that above-mentioned technical problem uses and can also be a kind of NMOS based on above-mentioned drive control circuit Tube drive device, including for storing the boost capacitor of electric energy；The positive pole of the boost capacitor while and first electronic cutting One end of pass and the electrical connection of one end of second electronic switch；The negative pole of the boost capacitor amplifies with the drive signal The output end electrical connection of device；The boost capacitor and the drive control circuit collectively form a voltage-multiplying circuit, the multiplication of voltage Circuit is used to the drive control circuit output to the current potential of outside NMOS tube raster data model being converted into higher than raster data model electricity Position threshold value.

Described NMOS tube drive device includes No. zero NMOS tube for driving load；The drive control circuit drives A terminal in port electrically connects with the grid of No. zero NMOS tube；It is another in the drive control circuit drives port The drain electrode electrical connection of individual terminal and No. zero NMOS tube, the terminal are additionally operable to electrically connect with the positive pole in externally fed source；It is described The source electrode of No. zero NMOS tube passes through carrying ground.

Solve the technical scheme that above-mentioned technical problem uses and can also be a kind of electronic cigarette of above-mentioned NMOS tube drive device, Including for providing the battery of electric energy and for being atomized the heating wire heated；The positive pole of the battery and No. zero NMOS tube Drain electrode electrical connection, the source electrode of the driving NMOS tube electrically connect with one end of the heating wire, another termination of the heating wire Ground.

The technical scheme that solution above-mentioned technical problem uses can also be a kind of and is used for based on above-mentioned drive control circuit The enhanced metal-oxide-semiconductor driving method of N-channel electrically connected altogether by driving load and its externally fed source, including step 1：Set and use In No. zero enhanced NMOS tube of the N-channel of driving load；The source electrode of No. zero NMOS tube passes through carrying ground；Described No. zero The drain electrode of NMOS tube is used for and the positive pole in externally fed source electrically connects；The grid of No. zero NMOS tube and drive control electricity Terminal electrical connection in the driving port of road；In the drain electrode of No. zero NMOS tube and the drive control circuit drives port Another terminal electrical connection；Step 2：It is provided for storing the boost capacitor of electric energy；The positive pole of the boost capacitor simultaneously and One end of first electronic switch and the electrical connection of one end of second electronic switch；The negative pole of the boost capacitor and institute State the output end electrical connection of drive signal amplifier；The boost capacitor and the drive control circuit collectively form a multiplication of voltage Circuit, the voltage-multiplying circuit are used for the current potential conversion of the drive control circuit output to outside NMOS tube raster data model is paramount In gate drive potential threshold value.

Compared with the existing technology compared with, the beneficial effects of the invention are as follows：1st, the two-way charging of electric capacity is carried out using Time-sharing control, Voltage-multiplying circuit is formed, the NMOS tube grid potential driven for resistance wire is raised so that the NMOS tube of low cost can be used Carry out the driving of resistance wire；It is middle compared with the prior art to use PMOS, conducting resistance and conduction loss are reduced, is improved Efficiency；2nd, the conducting internal resistance of NMOS tube can be also kept to be in relatively low shape after the cell voltage in externally fed source reduces State, it ensure that stable output characteristics in a big power supply source voltage range；3rd, the NMOS tube of same rank is with respect to PMOS Pipe cost is lower, and boost pressure circuit is simple, therefore circuit synthesis cost is lower.

Brief description of the drawings

Fig. 1 is that the circuit connection diagram of PMOS driving atomization heater strip is utilized in prior art electronic cigarette；Fig. 1 gets the bid Number RL resistance is heater strip；Annexation in figure between visible PMOS and heater strip and battery；

Fig. 2 is one of circuit theory diagrams of the preferred embodiment of the present invention, and label DRV is drive signal in figure；

Fig. 3 is that Fig. 2 fills in drive control circuit 100 described in drive signal phase morphology Control for boost capacitor C0 progress forward direction Schematic diagram in electric process, the elbow direction of arrow is boost capacitor C0 positive charge direction in figure；It is visible in figure, periodically When low and high level drive signal is high level, boost capacitor C0 carries out positive charge；

Fig. 4 is Fig. 2 in drive control circuit 100 described in drive signal phase morphology Control for boost capacitor C0 reverse chargings Schematic diagram in journey, such as reverse charging direction that the direction of arrow of capitalization English letter L-shaped is boost capacitor C0 in figure；Can in figure See, when periodicity low and high level drive signal is low level, boost capacitor C0 carries out reverse charging；

Fig. 5 is the conducting resistance RDS of No. zero NMOS tube NM0 in Fig. 2 with NMOS tube gate source voltage VGS change curve；Can in figure See, the NMOS tube is the enhanced metal-oxide-semiconductor of N-channel, and its grid source cut-in voltage or shut-off voltage are 2 volts or so, when the grid of NMOS tube Conducting resistance is smaller after source voltage VGS is more than 3 volts；

Fig. 6 is the circuit theory diagrams after the first electronic switch S1 and the second electronic switch S2 refinements in Fig. 2；

Fig. 7 is the circuit module block diagram of the electronic cigarette control chip 200 comprising drive control circuit 100 described in Fig. 1；

Fig. 8 is the circuit diagram of the electronic cigarette comprising electronic cigarette control chip 200 described in Fig. 7；

Fig. 9 is the pin definitions form of electronic cigarette control chip 200 in Fig. 7.

Embodiment

Embodiments of the present invention are further described below in conjunction with each accompanying drawing.

A kind of drive control circuit 100 for NMOS tube drive control as shown in Figures 2 to 4, including be used for and outside The boost capacitor connectivity port of boost capacitor connection, electrically connected for outside NMOS tube of the same source electrode through being grounded by driving load Drive port and the driving signal input mouth for driving control signal input；The boosting electricity of the drive control circuit 100 Two terminals for holding connectivity port are respectively used to electrically connect with the both positive and negative polarity of outside boost capacitor；The drive control circuit 100 Driving port two terminals be respectively used to and the grid of outside NMOS tube and drain electrode electrically connect；For with outside NMOS tube The drive terminal connected that drains also electrically connects for the positive pole with externally fed source simultaneously；External drive signal inputs the driving Control circuit 100 will be output to the grid of outside NMOS tube by the charging direction to outside boost capacitor and charging SECO Electrode potential is transformed into the current potential higher than gate drive potential threshold value, and the gate drive potential threshold value is externally fed source electricity The grid source cut-in voltage sum of pressure and outside NMOS tube.

Further, external drive signal inputs the drive control circuit 100 by being filled to outside boost capacitor Electric direction and charging SECO, the grid potential for being output to outside NMOS tube is transformed into the electricity of twice of externally fed source voltage Position.

As shown in Figures 2 to 4, the drive control circuit 100 includes what is be used for external drive signal inversion and amplify Drive signal amplifier G0, the first electronic switch S1 and the second electronic switch S2 for the control of outside boost capacitor;The drive Dynamic signal amplifier G0 output end is used for and the negative pole of outside boost capacitor electrically connects, and the drive signal amplifier G0's is defeated Enter end to be used to connect acquisition external drive signal with external drive signal source, the external drive signal is periodicity low and high level Drive signal；One end of the first electronic switch S1 is used for and the positive pole of outside boost capacitor electrically connects, first electronics The other end for switching S1 is used as the power input of the drive control circuit 100, and is electrically connected with the positive pole of power supply；Institute The one end for stating the second electronic switch S2 is used to electrically connect with the positive pole of outside boost capacitor, and the second electronic switch S2 This one end and the first electronic switch S1 electrically connected for the positive pole with outside boost capacitor one end electrical connection；Described The two electronic switch S2 other end is used for and the grid of outside NMOS tube electrically connects；The first electronic switch S1 and described second Electronic switch S2 is controlled by the periodicity low and high level drive signal from drive signal amplifier G0 inputs input；When The periodicity low and high level drive signal is in the first phase configuration state, the first electronic switch S1 closures, and described second Electronic switch S2 is turned off, and the both end voltage of outside boost capacitor is positively charged to supply voltage；When periodicity height electricity Flat drive signal is in second of phase configuration state, the first electronic switch S1 shut-offs, the second electronic switch S2 closures, outside The both end voltage of portion's boost capacitor, which is reversed, charges to supply voltage, therefore the grid potential for being output to outside NMOS tube is transformed into Twice of externally fed source voltage.

The periodicity low and high level drive signal is the unipolarity square-wave signal that dutycycle is 5% to 95%.The cycle Property low and high level drive signal can also be the unipolarity square-wave signal that dutycycle is 50%.

The cycle of periodicity low and high level drive signal and dutycycle are needed with external charging electric capacity and for bearing herein The capacitance of equivalent capacity matches between the NMOS power tube grid source of load driving.

The capacitance of external charging electric capacity is set as C01 methods, the capacitance of outside powered NMOS tube grid capacitance is C02 Method；In the charge phase of periodicity low and high level drive signal, capacitance is filled for the voltage at the external charging electric capacity both ends of C01 methods Lied prostrate to DV1；Capacitance is that the voltage at the NMOS power tube grid capacitances both ends of C02 methods is 0 volt.

After the discharge phase of periodicity low and high level drive signal terminates, capacitance is the external charging electric capacity two of C01 methods The voltage at end is DV2 volts；Capacitance is that the voltage at the NMOS power tube grid capacitances both ends of C02 methods is DV2 volts；NMOS power tube grid Electrode capacitance is that gate-source capacitance and gate leakage capacitance sum, now NMOS power tubes source electrode and the above earth potential value of drain electrode are power supply source Voltage value, and NMOS power tubes source electrode and drain electrode and the same current potential of negative plate of external charging electric capacity, and NMOS power tubes Grid and the same current potential of positive plate with external charging electric capacity；So the gate source voltage VGS after NMOS power tubes are opened is equal to DV2 Volt.

According to principle of charge conservation：C01×DV1+C02×0=C01×DV2+C2×DV2；That is DV2=C1/ (C1+C2) × DV1；Usual C01 takes more than 10 times of C02, you can its gate source voltage VGS value is more than power supply source after ensureing the unlatching of NMOS power tubes The 90% of magnitude of voltage；When C01 takes 100 times of C02, gate source voltage value VGS can reach the 99% of power supply source magnitude of voltage；Periodically The cycle of low and high level drive signal is very long, it will usually which, up to more than 10 milliseconds, dutycycle is 5% ~ 95%, that is when no matter charging Between or discharge time can all be more than 500 microseconds, general power tube grid capacitance is in 10 nanofarad ranks, even if boost capacitor takes 100 times=1 microfarad；Due to timeconstantτ=5 × RC, the equiva lent impedance of S1, S2 switch need to only meet R<The microsecond of τ/5C=500/（5 × 1 microfarad), it can ensure complete within the corresponding charging interval for the periodicity low and high level drive signal that dutycycle is 5% ~ 95% It can be full of into corresponding phase.

As shown in fig. 6, the second electronic switch S2 includes No. three PMOS PM3 and No. four NMOS tube NM4；Described No. three PMOS PM3 drain electrode electrically connects with the drain electrode of No. four NMOS tube NM4, the source electrode of No. three PMOS PM3 be used for and The positive pole electrical connection of outside boost capacitor, the grid of No. three PMOS PM3 is used for and the positive pole of power supply electrically connects；Institute The drain electrode for stating No. four NMOS tube NM4 is used to electrically connect with the grid of outside NMOS tube, and the source electrode of No. four NMOS tube NM4 connects Ground, the grid of No. four NMOS tube NM4 electrically connect with the drive signal amplifier G0 inputs, i.e., described No. four NMOS tubes NM4 grid is used for the input of external cycles low and high level drive signal.

As shown in fig. 6, the first electronic switch S1 includes No. six PMOS PM6, No. seven PMOS PM7, No. five NMOS Pipe NM5 and No.1 resistance R1；The drain electrode of No. six PMOS PM6 is used for and the positive pole in externally fed source electrically connects, No. seven PMOS PM7 drain electrode is used for and the positive pole of outside boost capacitor electrically connects；The source electrode and described seven of No. six PMOS PM6 Number PMOS PM7 source electrode electrical connection, and electrically connected with one end of the No.1 resistance R1, the No.1 resistance R1's is another End with the grid of No. six PMOS PM6 and No. seven PMOS PM7 grid electrical links, and with No. five NMOS tubes NM5 drain electrode electrical connection；The grid of No. five NMOS tube NM5 electrically connects with the drive signal amplifier G0 inputs, i.e., The grid of No. five NMOS tube NM5 is used for the access of external cycles low and high level drive signal；No. five NMOS tube NM5 Source electrode electrically connected with the positive pole of a reference current source, the negative pole of reference current source ground connection.

As shown in fig. 6, the drive signal amplifier G0 is an inverting amplifier, for by the periodicity low and high level Drive signal carries out reversal and is used as Current amplifier so that in the high level time section of periodicity low and high level drive signal Circuit is in electric capacity C0 anti-phase charged state；Electricity is in the low level time section circuit of periodicity low and high level drive signal Hold C0 positive charged state；The drive signal amplifier G0 includes No.1 NMOS tube NM1 and No. two PMOS PM2；It is described No. two PMOS PM2 source electrode is used for and the positive pole in externally fed source electrically connects；The drain electrode of No. two PMOS PM2 with it is described No.1 NMOS tube NM1 drain electrode electrical connection, as the drive signal amplifier G0 output ends, and the drive signal is put Big device G0 output ends are used for and the negative pole of outside boost capacitor electrically connects；The grid of the No.1 NMOS tube NM1 and described No. two PMOS PM2 grid electrical connection is used as the drive signal amplifier G0 inputs, for accessing external cycles height electricity Flat drive signal；The source ground of the No.1 NMOS tube NM1.

When the drain electrode of outside NMOS tube is connected with external power source positive pole, and the source electrode of outside NMOS tube is connected by driving load I.e. powered heating wire, the drive control circuit 100 pass through the charging direction to outside boost capacitor and charging sequential control System, the grid voltage for the grid voltage for being output to outside NMOS tube is transformed to twice of externally fed source voltage.Herein two Can be infinitely close to externally fed source voltage twice when actually rushing during discharge and recharge times for simplified saying.

When outside NMOS tube is opened, its source electrode is that load end is pulled to power supply source voltage, outside NMOS tube grid with Voltage between source electrode can maintain one times of supply voltage, from figure 5 it can be seen that when the gate source voltage of outside NMOS tube can maintain electricity When the voltage of source, for the usual voltage at least more than 3 volts, such gate source voltage causes the complete opening of outside NMOS tube, and And there is the conducting resistance of very little.Not only it address only in the case where loading and external power source must use common ground connection mode, The problem of can not continuing to drive after unlatching using NMOS tube, also conducting resistance is greatly reduced, improve drive efficiency, drop Low application cost.Simultaneously because the NMOS tube cost for driving is cheap with respect to PMOS, also cause circuit cost also significantly Reduce.

The drive control circuit 100 has been actually accomplished the function of voltage-multiplying circuit, can be regarded as voltage-multiplying circuit module, The grid of voltage-multiplying circuit module drive NMOS power tubes, the grid potential for improving power tube is higher than supply voltage, in NMOS power When pipe is opened, maintain power tube grid source pressure difference to be equal to supply voltage, reduce NMOS power tube conduction losses.Certain voltage-multiplying circuit will The specific multiple of externally fed source voltage multiplication, can be according to the needs of practical application, with the technical scheme is that basis It is changed, reaching twice of even more multiples, this numerical value can be adjusted and become according to different driving NMOS tubes Change.

External drive signal is square wave control signal, and positive charge and negatively charged time are realized by the adjustment of dutycycle Control, so as to control the voltage for being output to NMOS tube grid.Dutycycle adjustment is up to whole high level, i.e. boost capacitor Whole work periods are at the state of positive charge, and the potential value for being now output to NMOS tube grid is zero；Dutycycle is adjusted Whole minimum all low levels, i.e. boost capacitor whole work period all locate the state of reverse charging, are now output to The potential value of NMOS tube grid is power supply magnitude of voltage.

The frequency of the square-wave signal source is in below 100Hz, and preferably lower than auditory perceptual lower-frequency limit 20Hz, charging Time constant is mainly relevant with capacitance size and switch S1 and S2 internal resistances, if the cycle is small, it is necessary to which output duty cycle to the greatest extent may be used again Can be big, the charging interval need to be forced down, and can suitably reduce S1 internal resistances.Boost capacitor capacitance is much larger than NMOS tube parasitic gate electric capacity, Boost capacitor both end voltage only has a small amount of reduction during driving NMOS tube, so being not to be required in each cycle boosting Electric capacity charges to externally fed source voltage from no-voltage.

Crucial boost capacitor C0 is usually patch capacitor, and typical capacitance is 1 microfarad.Crucial NMOS power tubes selection with The power of electronic cigarette is relevant, and 100 watts of electronic cigarettes flow through electric current up to 30 peaces when opening, it is necessary to select internal resistance to be less than the work(of 10 milliohms Rate pipe；The resistance of the heating wire R0 is that heating wire resistance selection depends on the power bracket that electronic cigarette manufacturer needs, this core Piece 0.1 ohm to 3 ohm heating wire of compatibility, supports 5 ~ 100 watts of power output.

In a word in physical circuit the selection of the circuit parameter of each specific device can be needed according to the application of reality into The flexible option and installment of row, guarantees to meet NMOS tube energy normal switch when application, and be operated in the less region of internal resistance .Constant is determined by electric capacity and circuit equivalent resistance during the charging of circuit, the control of the discharge and recharge time of driving control signal The voltage that requirement can be charged within corresponding discharge and recharge time phase can be met.

As shown in fig. 7, the electronic cigarette control chip 200 for being built-in with the drive control circuit 100 includes being used for the cycle Property low and high level drive signal produce and the power output adjustment module 220 of adjustment；The power output adjustment module 220 and institute State drive control circuit 100 to electrically connect, and periodicity low and high level driving caused by the power output adjustment module 220 is believed Number it is sent to the driving signal input of the drive control circuit 100；The power output adjustment module 220 is additionally operable to control The PWM duty cycle of periodicity low and high level drive signal, the drive control circuit 100 drive according to input periodicity low and high level The PWM duty cycle adjustment of dynamic signal is output to the control signal of outside NMOS tube, so as to realize that the power of outside NMOS tube adjusts.

As shown in fig. 7, the electronic cigarette control chip 200 includes being used for the main control of electronic cigarette control chip system control Module 230, for being embodied as charging circuit module 260 that battery in electronic cigarette charged, for producing electronic cigarette control core The clock oscillator module 270 of piece work clock and the indicating circuit mould for the driving of electronic cigarette control chip outer coupling portion Block 280；The power output adjustment module 220, the charging circuit module 260, the clock oscillator module 270 and described Indicating circuit module 280 all electrically connects with the main control module 230 and receives the control of main control module 230.

As shown in figure 8, including the battery 510 for providing electric energy, for be atomized heating heating wire 5R0, for driving The driving NMOS tube 5NM0 of the heating wire and boost capacitor 5C0 for driving NMOS tube gate boost；The electronic cigarette controls core Piece 200 is connected by outside boost capacitor connectivity port with boost capacitor 5C0 both positive and negative polarity；The electronic cigarette control chip 200 Electrically connected by the sub positive pole with the battery 510 of external power input；The electronic cigarette control chip 200 is by controlling electricity Position lead-out terminal electrically connects with the grid of the driving NMOS tube 5NM0；The positive pole of the battery 510 and the driving NMOS tube 5NM0 drain electrode electrical connection, the source electrode of the driving NMOS tube 5NM0 electrically connect with one end of the heating wire 5R0, the electric heating Silk 5R0 other end ground connection；The collaboration of both the electronic cigarette control chip 200 and the boost capacitor 5C0 produces voltage-multiplying circuit Function, the grid potential that will be output to the driving NMOS tube 5NM0 is transformed into higher than the gate drive potential threshold value.

Chip controls electronic cigarette 500 as shown in Figure 8, the electronic cigarette control chip 200 are provided with for inputting outside The external control signal input terminal of control signal, and it is described according to being output to from the external control signal adjustment of terminal input The voltage signal of NMOS tube 5NM0 grids is driven, the driving current control of the heating wire 5R0 is realized, so as to control the electric heating Silk 5R0 atomization heating power.

As shown in fig. 7, the clock oscillator in electronic cigarette control chip 200 provides clock signal needed for work for system, Clock oscillator produces the driving square-wave signal for drive control circuit by main control module.Other can certainly be produced The switch controlling signal of type is used for drive control circuit.

As shown in fig. 7, the power output adjustment module in electronic cigarette control chip 200, can receive external control signal, Adjust the dutycycle of periodicity low and high level drive signal.The external control signal generation circuit, can carry variable partial pressure The circuit network of resistance.

As shown in fig. 7, indicating circuit module 280 in electronic cigarette control chip 200 and for the outer of indicating operating status Portion's LED light electrical connection, indicating circuit module 280 are also electrically connected and referred to for acquisition as status switch with outside control button Order；After control button and resistant series, then it is in parallel with LED light lamp；Indicating circuit module 280 controls the point of LED light Bright or extinguishing, and read the state of control button.

The accordingly chip comprising above-mentioned drive control circuit and the electronic cigarette using the chip, all due to comprising such Cleverly drive circuit and reduce the electric energy loss of driving, improve electric energy application efficiency, reduce cost.

As shown in Fig. 2 the NMOS tube drive device 300 includes being used for the boost capacitor C0 for storing electric energy；The boosting Electric capacity C0 positive pole electrically connects with one end of the first electronic switch S1 and one end of the second electronic switch S2 simultaneously； The negative pole of the boost capacitor C0 electrically connects with the output end of the drive signal amplifier G0；The boost capacitor C0 and described Drive control circuit 100 collectively forms a voltage-multiplying circuit, and the voltage-multiplying circuit is used to export in the drive control circuit 100 Current potential to outside NMOS tube raster data model is converted into higher than gate drive potential threshold value.

As shown in Fig. 2 described NMOS tube drive device 300 includes No. zero NMOS tube NM0 for driving load；It is described Drive control circuit 100 drives a terminal in port to be electrically connected with the grid of No. zero NMOS tube NM0；The driving control Circuit 100 processed drives the drain electrode electrical connection of another terminal and No. zero NMOS tube NM0 in port, the terminal be additionally operable to and The positive pole electrical connection in externally fed source；The source electrode of No. zero NMOS tube NM0 passes through carrying ground.

As shown in Fig. 2 the electronic cigarette 600 based on the NMOS tube drive device 300 includes being used for the battery for providing electric energy The 610 and heating wire 6R0 for atomization heating；The positive pole for stating battery 610 electrically connects with the drain electrode of No. zero NMOS tube NM0, The source electrode of the driving NMOS tube 5NM0 electrically connects with one end of the heating wire 5R0, another termination of the heating wire 5R0 Ground.

Based on above-mentioned drive control circuit 100 for the N ditches that are electrically connected altogether by driving load and its externally fed source The enhanced metal-oxide-semiconductor driving method in road, including step 1：It is provided for No. zero enhanced NMOS tube NM0 of the N-channel of driving load； The source electrode of No. zero NMOS tube NM0 passes through carrying ground；The drain electrode of No. zero NMOS tube NM0 is used for and externally fed source Positive pole electrically connects；The grid of No. zero NMOS tube NM0 and a terminal electricity in the drive control circuit 100 driving port Connection；The drain electrode of No. zero NMOS tube NM0 drives another terminal in port to be electrically connected with the drive control circuit 100 Connect；

Step 2：It is provided for storing the boost capacitor C0 of electric energy；The positive pole of the boost capacitor C0 while and first electronics Switch S1 one end and one end electrical connection of the second electronic switch S2；The negative pole of the boost capacitor C0 and the driving Signal amplifier G0 output end electrical connection；The boost capacitor C0 and the drive control circuit 100 collectively form one times Volt circuit, the current potential that the voltage-multiplying circuit is used to the drive control circuit 100 being output to outside NMOS tube raster data model become Shift to and be higher than gate drive potential threshold value.

The drive device and driving method of above-mentioned drive control circuit are accordingly included, is also not solely restricted in electronic cigarette and adds The driving of heated filament, it can be applied in the load driving of similar characteristics, in being driven such as motor.

It is related in the present invention for being atomized heater strip drive circuit, in battery and atomization heater strip common ground connection and NMOS The drain electrode of pipe is connect in this electronic cigarette application scenarios of anode, passes through the grid energy of the mode NMOS tube of voltage-multiplying circuit The level higher than anode that control needs is obtained, so as to maintain the gate source voltage of NMOS tube, keeps the normal of NMOS tube Switch control.NMOS tube has cost low, and internal resistance is low, and the advantages of small is lost, and particularly suitable battery and atomization heater strip connect altogether Connect and the drain electrode of switching tube is connect in this electronic cigarette application scenarios of anode.

It is another it should be noted that, battery or the zero-potential point that the negative pole in externally fed source is circuit in the present invention, in the present invention The potential value of other circuit nodes is all the numerical value of the relative zero-potential point；Battery or externally fed source voltage be its positive pole and The potential difference of negative pole.

For convenience, the electronic component such as NMOS tube, NMOS tube, resistance, electric capacity all employs one, second-class order volume Number, these serial numbers do not represent its position or restriction sequentially, and it is convenient to be intended merely to description.

Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize invention The equivalent structure or equivalent flow conversion that specification and accompanying drawing content are made, or directly or indirectly it is used in other related technologies Field, it is included within the scope of the present invention.

Claims

A kind of 1. drive control circuit for NMOS tube drive control（100）, it is characterised in that

Including the boost capacitor connectivity port for being connected with outside boost capacitor, for same source electrode through being grounded by driving load The driving port of outside NMOS tube electrical connection and the driving signal input mouth for driving control signal input；

The drive control circuit（100）Two terminals of boost capacitor connectivity port be respectively used to and outside boost capacitor Both positive and negative polarity electrically connects；The drive control circuit（100）Two terminals of driving port be respectively used to and outside NMOS tube Grid and drain electrode electrically connect；Drive terminal for the drain electrode connection with outside NMOS tube is also used for and externally fed source simultaneously Positive pole electrically connects；

External drive signal inputs the drive control circuit（100）During by the charging direction to outside boost capacitor and charging Sequence is controlled, and the grid potential for being output to outside NMOS tube is transformed into the current potential higher than gate drive potential threshold value, the grid Pole driving current potential threshold value is externally fed source voltage and the grid source cut-in voltage sum of outside NMOS tube.
2. drive control circuit according to claim 1（100）, it is characterised in that

External drive signal inputs the drive control circuit（100）During by the charging direction to outside boost capacitor and charging Sequence is controlled, and the grid potential for being output to outside NMOS tube is transformed into the current potential of twice of externally fed source voltage.
3. drive control circuit according to claim 1（100）, it is characterised in that

The drive control circuit（100）Including the drive signal amplifier for external drive signal inversion and amplification （G0）, for outside boost capacitor control the first electronic switch（S1）With the second electronic switch（S2）；

The drive signal amplifier（G0）Output end be used for and outside boost capacitor negative pole electrically connect, the drive signal Amplifier（G0）Input be used to connect acquisition external drive signal with external drive signal source, the external drive signal is Periodicity low and high level drive signal；

First electronic switch（S1）One end be used for and outside boost capacitor positive pole electrically connect, first electronic switch （S1）The other end be used as the drive control circuit（100）Power input, and electrically connected with the positive pole of power supply；

Second electronic switch（S2）One end be used for and the positive pole of outside boost capacitor electrically connects, and second electronics Switch（S2）This one end and for first electronic switch with the electrical connection of the positive pole of outside boost capacitor（S1）One end Electrical connection；Second electronic switch（S2）The other end be used for and outside NMOS tube grid electrically connect；

First electronic switch（S1）With second electronic switch（S2）It is controlled by from the drive signal amplifier （G0）The periodicity low and high level drive signal of input input；

When the periodicity low and high level drive signal is in the first phase configuration state, first electronic switch（S1）Closure, Second electronic switch（S2）Shut-off, the both end voltage of outside boost capacitor are positively charged to supply voltage；

When the periodicity low and high level drive signal is in second of phase configuration state, first electronic switch（S1）Shut-off, Second electronic switch（S2）Closure, the both end voltage of outside boost capacitor, which is reversed, charges to supply voltage, therefore exports Grid potential value to outside NMOS tube is transformed into twice of externally fed source magnitude of voltage.
4. drive control circuit according to claim 3（100）, it is characterised in that

The periodicity low and high level drive signal is the unipolarity square-wave signal that dutycycle is 5% to 95%.
5. drive control circuit according to claim 3（100）, it is characterised in that

The periodicity low and high level drive signal is the unipolarity square-wave signal that dutycycle is 50%.
6. drive control circuit according to claim 3（100）, it is characterised in that

Second electronic switch（S2）Including No. three PMOSs（PM3）With No. four NMOS tubes（NM4）；

No. three PMOSs（PM3）Drain electrode and No. four NMOS tubes（NM4）Drain electrode electrical connection, No. three PMOSs （PM3）Source electrode be used for and outside boost capacitor positive pole electrically connect, No. three PMOSs（PM3）Grid be used for and power The positive pole electrical connection of power supply；

No. four NMOS tubes（NM4）Drain electrode be used for and outside NMOS tube grid electrically connect, No. four NMOS tubes（NM4） Source ground, No. four NMOS tubes（NM4）Grid and the drive signal amplifier（G0）Input electrically connects, i.e. institute State No. four NMOS tubes（NM4）Grid be used for external cycles low and high level drive signal input.
7. drive control circuit according to claim 3（100）, it is characterised in that

First electronic switch（S1）Including No. six PMOSs（PM6）, No. seven PMOSs（PM7）, No. five NMOS tubes（NM5）With No.1 resistance（R1）；

No. six PMOSs（PM6）Drain electrode be used for and externally fed source positive pole electrically connect, No. seven PMOSs（PM7）Leakage Pole is used for and the positive pole of outside boost capacitor electrically connects；

No. six PMOSs（PM6）Source electrode and No. seven PMOSs（PM7）Source electrode electrical connection, and with the No.1 Resistance（R1）One end electrical connection, the No.1 resistance（R1）The other end and No. six PMOSs（PM6）Grid and No. seven PMOSs（PM7）Grid electrical links, and with No. five NMOS tubes（NM5）Drain electrode electrical connection；

No. five NMOS tubes（NM5）Grid and the drive signal amplifier（G0）Input electrically connects, i.e., described No. five NMOS tube（NM5）Grid be used for external cycles low and high level drive signal access；

No. five NMOS tubes（NM5）Source electrode electrically connected with the positive pole of a reference current source, the negative pole of the reference current source connects Ground.
8. drive control circuit according to claim 3（100）, it is characterised in that

The drive signal amplifier（G0）For an inverting amplifier, including No.1 NMOS tube（NM1）With No. two PMOSs （PM2）；

No. two PMOSs（PM2）Source electrode be used for and externally fed source positive pole electrically connect；No. two PMOSs（PM2） Drain electrode and the No.1 NMOS tube（NM1）Drain electrode electrical connection, as the drive signal amplifier（G0）Output end, and The drive signal amplifier（G0）Output end is used for and the negative pole of outside boost capacitor electrically connects；The No.1 NMOS tube （NM1）Grid and No. two PMOSs（PM2）Grid electrical connection be used as the drive signal amplifier（G0）Input, For accessing external cycles low and high level drive signal；The No.1 NMOS tube（NM1）Source ground.
9. one kind is based on drive control circuit described in claim 1 to 8 any one（100）Electronic cigarette control chip（200）, Characterized in that,

Including the power output adjustment module for producing and adjusting for periodicity low and high level drive signal（220）；

The power output adjustment module（220）With the drive control circuit（100）Electrical connection, and the power output is adjusted Save module（220）Caused periodicity low and high level drive signal is sent to the drive control circuit（100）Drive signal Input；

The power output adjustment module（220）The PWM duty cycle of controlling cycle low and high level drive signal is additionally operable to, it is described Drive control circuit（100）PWM duty cycle adjustment according to input periodicity low and high level drive signal is output to outside NMOS The control signal of pipe, so as to realize that the power of outside NMOS tube adjusts.
10. electronic cigarette control chip according to claim 9（200）, it is characterised in that

Including the main control module controlled for electronic cigarette control chip system（230）, in electronic cigarette battery charge fill Electric circuit module（260）, clock oscillator module for producing electronic cigarette control chip work clock（270）With for electronics The indicating circuit module of cigarette control chip outer coupling portion driving（280）；

The power output adjustment module（220）, the charging circuit module（260）, the clock oscillator module（270）With The indicating circuit module（280）All with the main control module（230）Electrically connect and receive main control module（230）Control System.
11. one kind is based on electronic cigarette control chip described in claim 9（200）Chip controls electronic cigarette（500）, its feature exists In,

Including the battery for providing electric energy（510）, for be atomized heating heating wire（5R0）, drive for driving heating wire Dynamic NMOS tube（5NM0）With the boost capacitor for driving NMOS tube gate boost（5C0）；

The electronic cigarette control chip（200）Pass through outside boost capacitor connectivity port and boost capacitor（5C0）Both positive and negative polarity connect Connect；The electronic cigarette control chip（200）It is sub with the battery by external power input（510）Positive pole electrical connection；Institute State electronic cigarette control chip（200）Pass through controlling potential lead-out terminal and the driving NMOS tube（5NM0）Grid electrical connection；

The battery（510）Positive pole and the driving NMOS tube（5NM0）Drain electrode electrical connection, the driving NMOS tube （5NM0）Source electrode and the heating wire（5R0）One end electrical connection, the heating wire（5R0）The other end ground connection；

The electronic cigarette control chip（200）With the boost capacitor（5C0）Both collaborations produce the function of voltage-multiplying circuit, will be defeated Go out to the driving NMOS tube（5NM0）Grid potential be transformed into higher than the gate drive potential threshold value.
12. chip controls electronic cigarette according to claim 11（500）, it is characterised in that

The electronic cigarette control chip（200）The external control signal input terminal for inputting external control signal is provided with, And it is output to the driving NMOS tube according to from the external control signal adjustment of terminal input（5NM0）The drive signal of grid Current potential, realize the heating wire（5R0）Driving current control, so as to control the heating wire（5R0）Atomization heating work( Rate.
13. one kind is based on drive control circuit described in claim 3 to 8 any one（100）NMOS tube drive device （300）, it is characterised in that

Including the boost capacitor for storing electric energy（C0）；The boost capacitor（C0）Positive pole simultaneously and first electronic cutting Close（S1）One end and second electronic switch（S2）One end electrical connection；The boost capacitor（C0）Negative pole with it is described Drive signal amplifier（G0）Output end electrical connection；

The boost capacitor（C0）With the drive control circuit（100）Collectively form a voltage-multiplying circuit, the voltage-multiplying circuit For by the drive control circuit（100）The current potential for being output to outside NMOS tube raster data model is converted into higher than raster data model electricity Position threshold value.
14. NMOS tube drive device according to claim 13（300）, it is characterised in that

Including No. zero NMOS tube for driving load（NM0）；The drive control circuit（100）Drive an end in port Sub and No. zero NMOS tube（NM0）Grid electrical connection；

The drive control circuit（100）Drive another terminal in port and No. zero NMOS tube（NM0）Drain electrode electricity Connection, the terminal are additionally operable to electrically connect with the positive pole in externally fed source；

No. zero NMOS tube（NM0）Source electrode pass through carrying ground.
15. one kind is based on NMOS tube drive device described in claim 13（300）Electronic cigarette（600）, it is characterised in that

Including the battery for providing electric energy（610）With the heating wire for being atomized heating（6R0）；The battery（610）Just Pole and No. zero NMOS tube（NM0）Drain electrode electrical connection, the driving NMOS tube（5NM0）Source electrode and the heating wire （5R0）One end electrical connection, the heating wire（5R0）The other end ground connection.
16. one kind is based on drive control circuit described in claim 3 to 8 any one（100）Be used for by driving load and its The enhanced metal-oxide-semiconductor driving method of N-channel that externally fed source electrically connects altogether, including

Step 1：It is provided for No. zero enhanced NMOS tube of the N-channel of driving load（NM0）；

No. zero NMOS tube（NM0）Source electrode pass through carrying ground；No. zero NMOS tube（NM0）Drain electrode be used for and outside The positive pole electrical connection of power supply source；

No. zero NMOS tube（NM0）Grid and the drive control circuit（100）A terminal in driving port is electrically connected Connect；No. zero NMOS tube（NM0）Drain electrode and the drive control circuit（100）Another terminal in driving port is electrically connected Connect；

Step 2：It is provided for storing the boost capacitor of electric energy（C0）；

The boost capacitor（C0）Positive pole simultaneously and first electronic switch（S1）One end and second electronic cutting Close（S2）One end electrical connection；The boost capacitor（C0）Negative pole and the drive signal amplifier（G0）Output end be electrically connected Connect；

The boost capacitor（C0）With the drive control circuit（100）Collectively form a voltage-multiplying circuit, the voltage-multiplying circuit For by the drive control circuit（100）The current potential for being output to outside NMOS tube raster data model is converted into higher than raster data model electricity Position threshold value.