CN206294889U - Voltage-dropping type integrated circuit and electronic cigarette - Google Patents
Voltage-dropping type integrated circuit and electronic cigarette Download PDFInfo
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- CN206294889U CN206294889U CN201620878541.9U CN201620878541U CN206294889U CN 206294889 U CN206294889 U CN 206294889U CN 201620878541 U CN201620878541 U CN 201620878541U CN 206294889 U CN206294889 U CN 206294889U
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- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 28
- 239000003990 capacitor Substances 0.000 claims description 75
- 238000005070 sampling Methods 0.000 claims description 32
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims description 21
- 235000019504 cigarettes Nutrition 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of voltage-dropping type integrated circuit and electronic cigarette, wherein, the voltage-dropping type integrated circuit includes power module, booster type charging module, controller module, drive module and feedback amplifier module, and an integrated chip is all integrated in upper module；Booster type charging module, the voltage to outside power input is boosted, and battery is charged；Power module, is powered to controller module, drive module；Amplifier module, the sampled voltage of the peripheral power circuit output end of collection, and sampled voltage is fed back into controller module；Controller module, control booster type charging module and power module are turned on and off, and the sampled voltage being input into according to amplifier module, drive module output pwm signal are controlled, driving the on and off of external switch pipe.Technical solutions of the utility model realize a kind of voltage-dropping type integrated circuit for being applied to electronic cigarette, occupy little space, strong antijamming capability.
Description
Technical Field
The utility model relates to an electron cigarette technical field, in particular to step-down integrated circuit and electron cigarette.
Background
The electronic cigarette is an electronic product simulating a cigarette, and the solution with the tobacco fragrance is atomized into a smoke state by heating, so that a smoker can use the electronic cigarette. With the requirement of people on product portability, highly integrated application circuits in electronic cigarettes are more and more accepted by the market due to the advantages of small size, low cost and the like. The voltage conversion circuit, the power tube driving circuit and the output sampling circuit of the electronic cigarette are important components, and the voltage reduction type circuit in the existing electronic cigarette occupies a large PCB space, has poor anti-interference capability and is not beneficial to the portable design of electronic cigarette products.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a step-down integrated circuit aims at providing the integrated circuit application IC of a high integration level, designs out the step-down circuit that occupation space is little, the interference killing feature is strong through this IC collection.
In order to achieve the above object, the present invention provides a step-down integrated circuit, which includes a power module, a step-up charging module, a controller module, a driving module and an operational amplifier module; the first output end of the power supply module is connected with the power supply end of the driving module, the second output end of the power supply module is connected with the power supply end of the controller module, and the controlled end of the power supply module is connected with the power supply control end of the controller module; the output end of the boost type charging module is connected with the input end of the power module, and the controlled end of the boost type charging module is connected with the charging control end of the controller module; the controlled end of the driving module is connected with the PWM control end of the controller module; the output end of the operational amplifier module is connected with the feedback end of the controller module; the power module, the boost charging module, the controller module, the driving module and the operational amplifier module are all integrated in one integrated chip; wherein,
the boost charging module boosts the voltage input by an external power supply and charges a battery;
the operational amplifier module is used for acquiring sampling voltage at the output end of the peripheral power circuit, feeding the sampling voltage back to the controller module, and converting the sampling voltage into output current of the power circuit by the controller module to realize adjustable output power;
the driving module receives the control signal of the controller module, outputs a PWM signal and drives the external switching tube to be switched on or switched off;
the power supply module transforms the voltage output by the boost charging module or the input voltage of the battery and supplies power to the controller module and the driving module;
the controller module controls the boost charging module and the power module to be turned on and off, and controls the driving module to output a PWM signal according to the sampling voltage input by the operational amplifier module so as to drive the external switching tube to be turned on or off.
Preferably, the buck integrated circuit further comprises a peripheral charging module; the peripheral charging module comprises a first capacitor, a first inductor and a battery; the first grounding end of the voltage-reducing integrated circuit is grounded, the power supply end of the voltage-reducing integrated circuit is connected with a power supply, the first end of the first capacitor is connected with the first grounding end of the voltage-reducing integrated circuit, and the second end of the first capacitor is connected with the power supply end of the voltage-reducing integrated circuit; the input inductor end of the voltage-reducing integrated circuit is connected with the first end of the first inductor, and the second end of the first inductor is connected with the power supply end of the voltage-reducing integrated circuit; the negative charging end of the voltage-reducing integrated circuit is grounded, and is also connected with the negative electrode of the battery; and the positive pole of the battery is connected with the positive charging end of the voltage reduction type integrated circuit.
Preferably, the buck integrated circuit further comprises a peripheral boost module; the peripheral boosting module comprises a second capacitor, a third capacitor and a second inductor; the negative input end of the buck integrated circuit is connected with the first end of the second capacitor, and the second end of the second capacitor is grounded; the positive input end of the buck integrated circuit is connected with the first end of the second inductor, and the second end of the second inductor is connected with the positive electrode of the battery; and the first end of the third capacitor is connected with the second end of the second capacitor, and the second end of the third capacitor is connected with the second end of the second inductor.
Preferably, the buck integrated circuit further comprises a peripheral buck module; the peripheral buck module comprises a fourth capacitor, a fifth capacitor, a sixth capacitor, a first switch tube, a second switch tube and a third inductor; the positive electrode of the battery is connected with the first end of the fourth capacitor, and the second end of the fourth capacitor is grounded; the positive electrode of the battery is connected with the input end of the first switch tube, the controlled end of the first switch tube is connected with the first driving end of the voltage-reducing integrated circuit, and the output end of the first switch tube is connected with the input end of the second switch tube; the controlled end of the second switch tube is connected with the second driving end of the voltage-reducing integrated circuit, and the output end of the second switch tube is grounded; the output end of the first switching tube is connected with the power supply end of the switching tube of the buck integrated circuit, the output end of the first switching tube is also connected with the first end of the fifth capacitor, and the second end of the fifth capacitor is connected with the bootstrap power supply end of the buck integrated circuit; a second grounding end of the voltage reduction type integrated circuit is grounded; the output end of the first switch tube is connected with the first end of the third inductor, and the second end of the third inductor is grounded through the sixth capacitor.
Preferably, the buck integrated circuit further comprises a resistor, and a first end of the resistor is connected with a second end of the third inductor; the first sampling end of the voltage reduction type integrated circuit is connected with the first end of the resistor, and the second sampling end of the voltage reduction type integrated circuit is connected with the second end of the resistor.
Preferably, the power module comprises a DCDC boost module and an LDO module; the controlled end of the DCDC boosting module is connected with the power control end of the controller module, and the first output end of the DCDC boosting module is connected with the power end of the driving module; and a second output end of the DCDC boosting module is connected with an input end of the LDO module, and an output end of the LDO module is connected with a power supply end of the controller module.
Preferably, the boost charging module includes a control unit, an output protection unit, a power supply output unit, a feedback logic unit, and a logic control unit; the input end of the control unit is connected with an external power supply, and the output end of the control unit is connected with the input end of the output protection unit; the first output end of the output protection unit is connected with the input end of the power supply output unit, and the second output end of the output protection unit is connected with the positive electrode of the battery; the output end of the power supply output unit is connected with the input end of the LDO module; the feedback end of the output protection unit is connected with the input end of the feedback logic unit; the output end of the feedback logic unit is connected with the input end of the logic control unit, the output end of the logic control unit is connected with the controlled end of the control unit, and the controlled end of the logic control unit is connected with the charging control end of the controller module.
Preferably, the DCDC boost module includes a feedback unit, a driving logic unit, a driving control unit, a power supply unit, and an enabling control unit; the input end of the power supply unit is connected with the first end of the second capacitor; the sampling end of the feedback unit is also connected with the first end of the second capacitor, and the output end of the power supply unit is connected with the power supply end of the driving module; the output end of the feedback unit is connected with the input end of the driving logic unit; the output end of the driving logic unit is connected with the controlled end of the driving control unit, the input end of the driving control unit is connected with the first end of the second inductor, and the output end of the driving control unit is grounded; the controlled end of the enabling control unit is connected with the power supply control end of the controller module, and the output end of the enabling control unit is connected with the controlled end of the driving logic unit.
Preferably, the driving module comprises a driving logic unit and a dead zone control logic unit; the power supply end of the driving logic unit and the power supply end of the dead zone control logic unit are both connected with the output end of the DCDC boosting module; the output end of the dead zone control logic unit is connected with the input end of the driving logic unit; and the controlled end of the driving logic unit is connected with the PWM control end of the controller module.
The utility model also provides an electronic cigarette, which comprises a power module, a boost charging module, a controller module, a driving module and an operational amplifier module; the first output end of the power supply module is connected with the power supply end of the driving module, the second output end of the power supply module is connected with the power supply end of the controller module, and the controlled end of the power supply module is connected with the power supply control end of the controller module; the output end of the boost type charging module is connected with the input end of the power module, and the controlled end of the boost type charging module is connected with the charging control end of the controller module; the controlled end of the driving module is connected with the PWM control end of the controller module; the output end of the operational amplifier module is connected with the feedback end of the controller module; the power module, the boost charging module, the controller module, the driving module and the operational amplifier module are all integrated in one integrated chip; the boost charging module boosts voltage input by an external power supply and charges a battery; the operational amplifier module is used for acquiring sampling voltage at the output end of the peripheral power circuit, feeding the sampling voltage back to the controller module, and converting the sampling voltage into output current of the power circuit by the controller module to realize adjustable output power; the driving module receives the control signal of the controller module, outputs a PWM signal and drives the external switching tube to be switched on or switched off; the power supply module transforms the voltage output by the boost charging module and supplies power to the controller module and the driving module; the controller module controls the boost charging module and the power module to be turned on and off, and controls the driving module to output a PWM signal according to the sampling voltage input by the operational amplifier module so as to drive the external switching tube to be turned on or off.
The technical scheme of the utility model provides a step-down integrated circuit by integrating a power module, a boost charging module, a controller module, a driving module and an operational amplifier module in an integrated chip; boosting the external power input by a boost charging module; transmitting a power supply to a power supply module for voltage transformation, and supplying power to a controller module and a driving module; the operational amplifier module collects output voltage and feeds the output voltage back to the controller module; the controller module controls the boost charging module and the power module to be turned on or off, receives a feedback signal and controls the driving module to output a PWM signal so as to drive an external switching tube to be turned on or off; the utility model discloses technical scheme makes the internal circuit occupation space of electron cigarette littleer, has satisfied people and has satisfied the requirement to product portability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the buck integrated circuit of the present invention;
fig. 2 is a functional block diagram of the boost charging module of the present invention;
fig. 3 is a functional block diagram of the DCDC boost module according to the present invention;
fig. 4 is a functional block diagram of the driving module according to the present invention.
The reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a step-down integrated circuit.
Referring to fig. 1, in an embodiment of the present invention, the step-down integrated circuit includes a step-up charging module 100, a power module 200, a controller module 300, a driving module 400, and an operational amplifier module 500; a first output end of the power module 200 is connected with a power end of the driving module 400, a second output end of the power module 200 is connected with a power end of the controller module 300, and a controlled end of the power module 200 is connected with a power control end of the controller module 300; the output end of the boost charging module 100 is connected to the input end of the power module 200, and the controlled end of the boost charging module 100 is connected to the charging control end of the controller module 300; the controlled end of the driving module 400 is connected with the PWM control end of the controller module 300; the output end of the operational amplifier module 500 is connected with the feedback end of the controller module 300; the boost charging module 100, the power module 200, the controller module 300, the driving module 400, and the operational amplifier module 500 are all integrated into one integrated chip.
The boost charging module 100 boosts a voltage input from an external power source and charges a battery; the operational amplifier module 500 collects the sampling voltage at the output end of the peripheral power circuit, feeds the sampling voltage back to the controller module 300, and the controller module 300 converts the sampling voltage into the output current of the power circuit, so as to realize the adjustable output power; the driving module 400 receives the control signal of the controller module 300, outputs a PWM signal, and drives the external switching tube to be turned on or off; the power module 200 transforms the voltage output by the boost charging module 100, and supplies power to the controller module 300 and the driving module 400; the controller module 300 controls the boost charging module 100 and the power module 200 to be turned on and off, and controls the driving module 400 to output a PWM signal according to the sampling voltage input by the operational amplifier module 500, so as to drive the external switching tube to be turned on or off.
It should be noted that the operational amplifier module 500 obtains the sampling voltage through the external sampling circuit, and amplify the sampled voltage, transmit it to the controller module 300, the controller module 300 judges whether the sampling voltage that the operational amplifier module 500 transmitted exceeds the preset range, if exceed the range, then the controller module 300 controls the duty cycle of the PWM signal that the driver module 400 adjusted its output, thereby control the work of the external voltage reduction circuit, adjust the output within the required range, in the embodiment of the utility model, the controller module also controls the display of the peripheral OLED screen and the key control, as the control center of the whole circuit.
In the embodiment of the present invention, what boost type charging module 100 adopted is a boost type charging management circuit with 5V input, which is suitable for 2-battery charging management. The external power supply charges the battery through the voltage transformation of the voltage-reducing integrated circuit, and the voltage-reducing integrated circuit drives the MOS tube of the external voltage-reducing circuit to control the voltage reduction of the peripheral BUCK voltage-reducing circuit so as to provide a proper power supply for the atomizer electric component in the electronic cigarette.
The technical scheme of the utility model is that the boost charging module 100, the power module 200, the controller module 300, the driving module 400 and the operational amplifier module 500 are all integrated in one integrated chip, so as to provide a buck integrated circuit; the boost charging module 100 boosts the external power input; transmitting power to the power module 200 for transformation to supply power to the controller module 300 and the driving module 400; the operational amplifier module 500 collects the output voltage and feeds the output voltage back to the controller module 300; the controller module 300 controls the boost charging module 100 and the power module 200 to be turned on or off, receives a feedback signal, and controls the driving module 400 to output a PWM signal to drive the external switching tube to be turned on or off; the utility model discloses technical scheme makes the internal circuit occupation space of electron cigarette littleer, has satisfied people and has satisfied the requirement to product portability.
Specifically, the buck integrated circuit further includes a peripheral charging module 600; the peripheral charging module 600 comprises a first capacitor C1, a first inductor L1 and a battery BAR; the first grounding end A of the buck integrated circuit is grounded, the power end B of the buck integrated circuit is connected with a power supply VCC +, the first end of the first capacitor C1 is connected with the first grounding end A of the buck integrated circuit, and the second end of the first capacitor C1 is connected with the power end B of the buck integrated circuit; an input inductor end C of the buck integrated circuit is connected with a first end of the first inductor L1, and a second end of the first inductor L1 is connected with a power supply end B of the buck integrated circuit; the negative charging end E of the voltage-reducing integrated circuit is grounded, and is also connected with the negative electrode of the battery BAR; the battery anode BAR is connected with a positive charging terminal F of the buck integrated circuit.
It should be noted that the first capacitor C1 is a charging input capacitor, and the first inductor L1 is an input energy storage inductor, and is used for storing external input electric energy.
Specifically, the buck integrated circuit further includes a peripheral boost module 700; the peripheral boost module 700 comprises a second capacitor C2, a third capacitor C3 and a second inductor L2; the negative input end H of the buck integrated circuit is connected with the first end of the second capacitor C2, and the second end of the second capacitor C2 is grounded; a positive input end G of the buck integrated circuit is connected with a first end of the second inductor L2, and a second end of the second inductor L2 is connected with a battery BAR positive electrode; a first terminal of the third capacitor C3 is connected to a second terminal of the second capacitor C2, and a second terminal of the third capacitor C3 is connected to a second terminal of the second inductor L2.
Note that, the second capacitor C2 is used as an input capacitor; the second inductor L2 is an external circuit energy storage inductor; the third capacitor C3 is used as an output capacitor.
Specifically, the buck integrated circuit further includes a peripheral buck module 800; the peripheral buck module 800 comprises a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a first switch tube Q1, a second switch tube Q2 and a third inductor L3; the battery BAR positive electrode is connected with a first end of the fourth capacitor C4, and a second end of the fourth capacitor C4 is grounded; the positive electrode of the battery BAR is connected with the input end of the first switch tube Q1, the controlled end of the first switch tube Q1 is connected with the first driving end K of the buck integrated circuit, and the output end of the first switch tube Q1 is connected with the input end of the second switch tube Q2; the controlled end of the second switch tube Q2 is connected with the second driving end L of the buck integrated circuit, and the output end of the second switch tube Q2 is grounded; the output end of the first switch tube Q1 is connected with a switch tube power supply end J of the buck integrated circuit, the output end of the first switch tube Q1 is further connected with a first end of the fifth capacitor C5, and a second end of the fifth capacitor C5 is connected with a bootstrap power supply end I of the buck integrated circuit; a second grounding end M of the buck integrated circuit is grounded; the output terminal of the first switch Q1 is connected to the first terminal of the third inductor L3, and the second terminal of the third inductor L3 is also connected to ground through the sixth capacitor C6.
It should be noted that the first switch transistor Q1 and the second switch transistor Q2 are both implemented by MOS transistors, and the fifth capacitor C5 is a bootstrap capacitor; the fourth capacitor C4 is an input capacitor; the first switch tube Q1, the second switch tube Q2, the sixth capacitor C6 and the third inductor L3 form a buck voltage reduction circuit together; the first switch tube Q1 is an upper arm MOS tube, the second switch tube Q2 is a lower arm MOS tube, and the third inductor L3 is an energy storage inductor; the sixth capacitor C6 is an output capacitor.
Further, when the BUCK converter works, the BUCK integrated circuit controls the conducting time of the first switch tube Q1 and the second switch tube Q2 to control the BUCK of the BUCK, and the third inductor L3 stores a part of electric energy and cooperates with the sixth capacitor C6 to perform the BUCK.
Specifically, the inductor further comprises a resistor R, wherein a first end of the resistor R is connected with a second end of the L3 of the third inductor; the first sampling end N of the voltage reduction type integrated circuit is connected with the first end of the resistor R, and the second sampling end O of the voltage reduction type integrated circuit is connected with the second end of the resistor R.
It should be noted that the two sampling terminals of the operational amplifier module detect the magnitude of the current by checking the voltage drop across the resistor R, and amplify the sampled signal and transmit the amplified signal to the controller module 300. The second end of the resistor R is the positive output end of the buck integrated circuit, and the output end of the second switch tube Q2 is the negative output end of the buck integrated circuit.
Specifically, the power module 200 includes a DCDC boost module 210 and an LDO module 220; the controlled end of the DCDC boost module 210 is connected to the power control end of the controller module 300, and the first output end of the DCDC boost module 210 is connected to the power end of the driving module 400; a second output terminal of the DCDC boost module 210 is connected to an input terminal of the LDO module 220, and an output terminal of the LDO module 220 is connected to a power supply terminal of the controller module 300.
It should be noted that, in an LDO (low dropout regulator), a difference between a required input voltage and an output power supply is smaller than that of a conventional linear regulator. LDO module 220 is used to supply power to controller module 300; the DCDC boost module 210 is used to power the drive module 400.
In the embodiment of the utility model provides an in, step-down integrated circuit's LDO output D with the first end of seventh electric capacity is connected, seventh electric capacity second end ground connection.
Referring to fig. 2, specifically, the boost charging module 100 includes a control unit 110, an output protection unit 120, a power supply output unit 130, a feedback logic unit 140, and a logic control unit 150; the input end of the control unit 110 is connected with an external power supply VCC +, and the output end of the control unit 110 is connected with the input end of the output protection unit 120; a first output end of the output protection unit 120 is connected with an input end of the power supply output unit 130, and a second output end of the output protection unit 120 is connected with the battery BAR positive electrode; the output end of the power supply output unit 130 is connected with the input end of the LDO module 220; the feedback end of the output protection unit 120 is connected to the input end of the feedback logic unit 140; the output end of the feedback logic unit 140 is connected to the input end of the logic control unit 150, the output end of the logic control unit 150 is connected to the controlled end of the control unit 110, and the controlled end of the logic control unit 150 is connected to the charging control end of the controller module 300.
It should be noted that the control unit 110, together with the peripheral first capacitor C1 and the first inductor L1, forms a voltage boost circuit to boost the power supply; then, the output protection unit 120 performs overvoltage and overcurrent protection and outputs the overvoltage and overcurrent protection, and the feedback logic unit 140 and the logic control unit 150 perform sampling and feedback to perform dynamic balance adjustment on the control unit 110; the power output unit 130 mainly supplies power to the internal LDO module 220.
Further, when the battery BAR is fully charged, the logic control unit 150 sends a signal to the controller module 300, and the controller module 300 controls to stop charging the battery.
Referring to fig. 3, specifically, the DCDC boost 210 module includes a power supply unit 211, an enable control unit 212, a feedback unit 213, a driving logic unit 214, and a driving control unit 215; the input end of the power supply unit 211 is connected to the first end of the second capacitor C2; the sampling end of the feedback unit 213 is also connected to the first end of the second capacitor C2, and the output end of the power supply unit 211 is connected to the power supply end of the driving module 400; the output end of the feedback unit 213 is connected to the input end of the driving logic unit 214; the output end of the driving logic unit 214 is connected to the controlled end of the driving control unit 215, the input end of the driving control unit 215 is connected to the first end of the second inductor L2, and the output end of the driving control unit 215 is grounded; the controlled terminal of the enable control unit 212 is connected to the power control terminal of the controller module 300, and the output terminal of the enable control unit 212 is connected to the controlled terminal of the driving logic unit 214.
It should be noted that the enabling control unit 212 is used for controlling the whole DCDC boost module 210 to be turned on and off; the feedback unit 213 is used for sampling the output voltage and comparing and converting the logic level of the sampled value; the driving logic unit 214 generates a PWM driving signal with a fixed frequency, and compares the PWM driving signal with the value provided by the feedback unit 213 to control the duty ratio of the PWM driving signal, thereby implementing a voltage-stabilizing closed-loop control.
Referring to fig. 4, in particular, the driving module 400 includes a driving logic unit 410 and a dead band control logic unit 420; the power supply terminal of the driving logic unit 410 and the power supply terminal of the dead-time control logic unit 420 are both connected to the output terminal of the DCDC boost module 210; the output end of the dead zone control logic unit 420 is connected with the input end of the drive logic unit 410; the controlled terminal of the driving logic unit 410 is connected to the PWM control terminal of the controller module 300.
It should be noted that the driving module 400 is configured to receive the PWM signal of the controller module 300 and output the PWM driving signal to drive the switching tube of the BUCK circuit.
The technical scheme of the utility model is that the boost charging module 100, the power module 200, the controller module 300, the driving module 400 and the operational amplifier module 500 are integrated in one integrated chip, so that the buck integrated circuit with small occupied space is provided; the boost charging module 100 and its peripheral circuits boost the external power input; transmitting power to the power module 200 and its peripheral circuits, transforming the power to supply power to the controller module 300 and the driving module 400; the controller 300 controls the boost charging module 100 and the power module 200 to be turned on and off, receives a feedback signal, controls the driving module 400 to output a PWM signal to drive the external switching tube to be turned on or off, and finally outputs power through an external BUCK circuit. The utility model discloses technical scheme occupation space is little, with low costs, the interference killing feature is strong, has satisfied people and has satisfied the requirement to product portability.
The utility model discloses still provide an electron cigarette, this electron cigarette includes as above step-down type integrated circuit, this step-down type integrated circuit's concrete structure refers to above-mentioned embodiment, because this electron cigarette has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer gives unnecessary detail here.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A step-down integrated circuit is characterized by comprising a power module, a step-up charging module, a controller module, a driving module and an operational amplifier module; the first output end of the power supply module is connected with the power supply end of the driving module, the second output end of the power supply module is connected with the power supply end of the controller module, and the controlled end of the power supply module is connected with the power supply control end of the controller module; the output end of the boost type charging module is connected with the input end of the power module, and the controlled end of the boost type charging module is connected with the charging control end of the controller module; the controlled end of the driving module is connected with the PWM control end of the controller module; the output end of the operational amplifier module is connected with the feedback end of the controller module; the power module, the boost charging module, the controller module, the driving module and the operational amplifier module are all integrated on one IC chip; wherein,
the boost charging module boosts the voltage input by an external power supply and charges a battery;
the operational amplifier module is used for acquiring sampling voltage at the output end of the peripheral power circuit, feeding the sampling voltage back to the controller module, and converting the sampling voltage into output current of the power circuit by the controller module to realize adjustable output power;
the driving module receives the control signal of the controller module, outputs a PWM signal and drives the external switching tube to be switched on or switched off;
the power supply module transforms the voltage output by the boost charging module and supplies power to the controller module and the driving module;
the controller module controls the boost charging module and the power module to be turned on or turned off, and controls the driving module to output a PWM signal according to the sampling voltage input by the operational amplifier module so as to drive the external switching tube to be turned on or turned off.
2. A buck integrated circuit according to claim 1, further comprising a peripheral charging module; the peripheral charging module comprises a first capacitor, a first inductor and a battery; the first grounding end of the voltage-reducing integrated circuit is grounded, the power supply end of the voltage-reducing integrated circuit is connected with a power supply, the first end of the first capacitor is connected with the first grounding end of the voltage-reducing integrated circuit, and the second end of the first capacitor is connected with the power supply end of the voltage-reducing integrated circuit; the input inductor end of the voltage-reducing integrated circuit is connected with the first end of the first inductor, and the second end of the first inductor is connected with the power supply end of the voltage-reducing integrated circuit; the negative charging end of the voltage-reducing integrated circuit is grounded, and is also connected with the negative electrode of the battery; and the positive pole of the battery is connected with the positive charging end of the voltage reduction type integrated circuit.
3. A buck integrated circuit according to claim 2, further comprising a peripheral boost module; the peripheral boosting module comprises a second capacitor, a third capacitor and a second inductor; the negative input end of the buck integrated circuit is connected with the first end of the second capacitor, and the second end of the second capacitor is grounded; the positive input end of the buck integrated circuit is connected with the first end of the second inductor, and the second end of the second inductor is connected with the positive electrode of the battery; and the first end of the third capacitor is connected with the second end of the second capacitor, and the second end of the third capacitor is connected with the second end of the second inductor.
4. A buck integrated circuit according to claim 3, further comprising a peripheral buck module; the peripheral buck module comprises a fourth capacitor, a fifth capacitor, a sixth capacitor, a first switch tube, a second switch tube and a third inductor; the positive electrode of the battery is connected with the first end of the fourth capacitor, and the second end of the fourth capacitor is grounded; the input end of the first switch tube is connected with the anode of the battery, the controlled end of the first switch tube is connected with the first driving end of the voltage-reducing integrated circuit, and the output end of the first switch tube is connected with the input end of the second switch tube; the controlled end of the second switch tube is connected with the second driving end of the voltage-reducing integrated circuit, and the output end of the second switch tube is grounded; the output end of the first switching tube is connected with the power supply end of the switching tube of the buck integrated circuit, the output end of the first switching tube is also connected with the first end of the fifth capacitor, and the second end of the fifth capacitor is connected with the bootstrap power supply end of the buck integrated circuit; a second grounding end of the voltage reduction type integrated circuit is grounded; the output end of the first switch tube is further connected with the first end of the third inductor, and the second end of the third inductor is grounded through the sixth capacitor.
5. A buck integrated circuit according to claim 4, further comprising a resistor, a first terminal of the resistor being connected to a second terminal of the third inductor; the first sampling end of the voltage reduction type integrated circuit is connected with the first end of the resistor, and the second sampling end of the voltage reduction type integrated circuit is connected with the second end of the resistor.
6. A buck integrated circuit according to claim 5, wherein the power module includes a DCDC boost module and an LDO module; the controlled end of the DCDC boosting module is connected with the power control end of the controller module, and the first output end of the DCDC boosting module is connected with the power end of the driving module; and a second output end of the DCDC boosting module is connected with an input end of the LDO module, and an output end of the LDO module is connected with a power supply end of the controller module.
7. The buck integrated circuit according to claim 6, wherein the boost charging module comprises a control unit, an output protection unit, a power supply output unit, a feedback logic unit, and a logic control unit; the input end of the control unit is connected with an external power supply, and the output end of the control unit is connected with the input end of the output protection unit; the first output end of the output protection unit is connected with the input end of the power supply output unit, and the second output end of the output protection unit is connected with the positive electrode of the battery; the output end of the power supply output unit is connected with the input end of the LDO module; the feedback end of the output protection unit is connected with the input end of the feedback logic unit; the output end of the feedback logic unit is connected with the input end of the logic control unit, the output end of the logic control unit is connected with the controlled end of the control unit, and the controlled end of the logic control unit is connected with the charging control end of the controller module.
8. The buck integrated circuit according to claim 7, wherein the DCDC boost module includes a feedback unit, a driving logic unit, a driving control unit, a power supply unit, and an enable control unit; the input end of the power supply unit is connected with the first end of the second capacitor; the sampling end of the feedback unit is also connected with the first end of the second capacitor, and the output end of the power supply unit is connected with the power supply end of the driving module; the output end of the feedback unit is connected with the input end of the driving logic unit; the output end of the driving logic unit is connected with the controlled end of the driving control unit, the input end of the driving control unit is connected with the first end of the second inductor, and the output end of the driving control unit is grounded; the controlled end of the enabling control unit is connected with the power supply control end of the controller module, and the output end of the enabling control unit is connected with the controlled end of the driving logic unit.
9. The buck integrated circuit of claim 8, wherein the driver module includes a driver logic unit and a dead band control logic unit; the power supply end of the driving logic unit and the power supply end of the dead zone control logic unit are both connected with the output end of the DCDC boosting module; the output end of the dead zone control logic unit is connected with the input end of the driving logic unit; and the controlled end of the driving logic unit is connected with the PWM control end of the controller module.
10. An electronic cigarette, characterized in that the electronic cigarette comprises a buck integrated circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620878541.9U CN206294889U (en) | 2016-08-12 | 2016-08-12 | Voltage-dropping type integrated circuit and electronic cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620878541.9U CN206294889U (en) | 2016-08-12 | 2016-08-12 | Voltage-dropping type integrated circuit and electronic cigarette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206294889U true CN206294889U (en) | 2017-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620878541.9U Withdrawn - After Issue CN206294889U (en) | 2016-08-12 | 2016-08-12 | Voltage-dropping type integrated circuit and electronic cigarette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206294889U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106072778A (en) * | 2016-08-12 | 2016-11-09 | 深圳市海派特光伏科技有限公司 | Voltage-dropping type integrated circuit and electronic cigarette |
| RU2738705C1 (en) * | 2019-05-31 | 2020-12-15 | Джапан Тобакко Инк. | Aerosol inhaler control device and aerosol inhaler |
-
2016
- 2016-08-12 CN CN201620878541.9U patent/CN206294889U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106072778A (en) * | 2016-08-12 | 2016-11-09 | 深圳市海派特光伏科技有限公司 | Voltage-dropping type integrated circuit and electronic cigarette |
| CN106072778B (en) * | 2016-08-12 | 2019-05-10 | 深圳市海派特光伏科技有限公司 | Voltage-dropping type integrated circuit and electronic cigarette |
| RU2738705C1 (en) * | 2019-05-31 | 2020-12-15 | Джапан Тобакко Инк. | Aerosol inhaler control device and aerosol inhaler |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170704 Effective date of abandoning: 20190510 |