CN209200935U - A kind of chip of PLC technology output voltage size - Google Patents
A kind of chip of PLC technology output voltage size Download PDFInfo
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- CN209200935U CN209200935U CN201822232149.9U CN201822232149U CN209200935U CN 209200935 U CN209200935 U CN 209200935U CN 201822232149 U CN201822232149 U CN 201822232149U CN 209200935 U CN209200935 U CN 209200935U
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- master control
- control logic
- logic module
- booster circuit
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Abstract
The utility model discloses a kind of chips of PLC technology output voltage size, wherein, the master control logic module being equipped with including chip carrier, on chip carrier, the DC/DC converter being connect with master control logic module, and the booster circuit, current feedback and the Voltage Feedback that are connect respectively with master control logic module.DC/DC converter is connect with battery, and the boost inductance connected on booster circuit, DC/DC converter is connect with boost inductance；The current feedback is connect with booster circuit, and Voltage Feedback is connect with booster circuit.The utility model has atomization rates adjustable and the effect of modularization and miniaturization.
Description
Technical field
The utility model relates to a kind of chips applied to PLC technology output voltage size in micropore atomization device.
Background technique
With the development of portable atomizer, the market share of micropore atomization device is increasing.At the same time, the mould of atomizer
The cry of block design and Miniaturization Design is also higher and higher.Currently, the design scheme of micropore atomization device on the market, generally does
Method is first to carry out primary boosting to cell voltage, carries out secondary driving again later, converts voltages into peak value as 60V-90V effect
In micropore atomization piece, to realize atomizing effect.Since voltage boosts to secondary driving from primary, the circuit element being related to compares
It is more, and these elements cannot achieve module, have the defects that at random and numerous and jumbled.
Utility model content
In view of the above problems, the purpose of this utility model is to provide a kind of atomization rates are adjustable and modularization and small-sized
The chip of the PLC technology output voltage size of change.
To achieve the above object, the chip of a kind of PLC technology output voltage size provided by the utility model, it is special
Sign is, the master control logic module being equipped with including chip carrier, on chip carrier, the DC/DC connecting with master control logic module
Converter, and the booster circuit, current feedback and the Voltage Feedback that are connect respectively with master control logic module.DC/DC converter and electricity
Pond connects, and the boost inductance connected on booster circuit, DC/DC converter is connect with boost inductance；The current feedback and liter
Volt circuit connection, Voltage Feedback are connect with booster circuit.
In some embodiments, booster circuit includes the power switch tube connecting with master control logic module and phase inverter,
And the rectifying tube being connect with phase inverter.Current feedback includes the current sampling amplifier connecting with master control logic module, Ji Yu electricity
Flow the current sampling resistor of sampling amplifier connection.Voltage Feedback includes Voltage Feedback resistance.Boost inductance includes connecting with battery
The external energy storage inductor connect, and the filter capacitor that battery is connected with chip carrier respectively.
The utility model has the beneficial effects that having the effect of modularization and miniaturization.Due to by primary booster circuit and master
Controller collection is combined, and periphery only needs to add seldom element and primary boost function can be realized, i.e., sets on chip carrier
It is equipped with master control logic module, and in chip carrier and is circumscribed with an inductance (L1), two capacitors (C1, C2), can be realized
The function of primary boosting in atomizer circuit.Chip carrier is internally integrated part by power switch tube (NMOS Q1), rectifying tube
(NMOS Q2), phase inverter (N1), current sampling resistor (R1), current sampling amplifier (N2), Voltage Feedback resistance (R3, R4)
Composition；It is circumscribed with external energy storage inductor (L1), filter capacitor (C1, C2) forms a complete switch DC booster circuit.Together
When, the program can set the size of primary boosting by software configuration to which software control is atomized power, promote properties of product.It can
Directly by software set output voltage to adjust atomization rates and the Integrated design of circuit makes circuit become simplified, line
Road plate suqare and the chip also have overcurrent protection function on the basis of overvoltage protection, and realization atomization rates are adjustable and mould
Blockization and miniaturization
Detailed description of the invention
Fig. 1 is the frame principle figure of the utility model；
Fig. 2 is the circuit diagram of the utility model.
Specific embodiment
Utility model is described in further detail with reference to the accompanying drawing.
As shown in Figs. 1-2, a kind of chip of PLC technology output voltage size, including chip carrier, in chip carrier
The master control logic module being equipped with, the DC/DC converter being connect with master control logic module, and connect respectively with master control logic module
Booster circuit, current feedback and Voltage Feedback.DC/DC converter is connect with battery, the boost inductance connected on booster circuit,
DC/DC converter is connect with boost inductance, and current feedback is connect with booster circuit, and Voltage Feedback is connect with booster circuit.Boosting
Circuit includes the power switch tube connecting with master control logic module and phase inverter, and the rectifying tube connecting with phase inverter.Electric current is anti-
Feedback includes the current sampling amplifier connecting with master control logic module, and the current sampling electricity connecting with current sampling amplifier
Resistance.Voltage Feedback includes Voltage Feedback resistance.Boost inductance includes the external energy storage inductor connecting with battery, and respectively battery and
The filter capacitor of chip carrier connection.
Connection type is as follows, and mist can be realized in chip carrier and an external inductance (L1), two capacitors (C1, C2)
Change the function of primary boosting in device circuit.Chip carrier is internally integrated part by power switch tube (NMOS Q1), rectifying tube
(NMOS Q2), phase inverter (N1), current sampling resistor (R1), current sampling amplifier (N2), Voltage Feedback resistance (R3, R4)
Composition；It is circumscribed with external energy storage inductor (L1), filter capacitor (C1, C2) forms a complete switch DC booster circuit.Outside
The first end of portion energy storage inductor L1 and the output cathode of battery connect, while connecting one end of input filter capacitor C2；It can inductance
The L1 other end is connect by the external pin VIN of chip carrier with the drain electrode of NMOS tube Q1, the drain electrode of NMOS tube Q2.C2's is another
End ground connection.The PWM output pin of the grid connection master control logic module of rectifying tube (NMOS Q2), while passing through a phase inverter N1
It is connected to the grid namely Q1 of Q1, the grid level of Q2 is in inverse state；The source electrode connection external pin VOUT of Q2 is as defeated
Out, at the same time, outside VOUT, an output filter capacitor C1 is connected to ground.The first end of current sampling resistor R1 connects
The source electrode of Q1, the other end are connected to ground by external pin VSS.1,2 feet of amplifier N2 are separately connected the 1 of R1,2 feet；N2 will
The AD2 foot of internal logic control module is output to after the pressure difference amplification at the both ends R1 by the 3rd foot.The grid of the 1st foot connection Q1 of R2
Pole, the 2nd foot connection ground, plays the role of drop-down；Namely the default conditions of the grid of Q1 are low level.Voltage sample resistance R3's
1st foot connects output pin VOUT, and the 2nd foot connects the 1st foot of R4；The 2nd foot of R4 is connected to ground by internal pin VSS.R3,R4
Tie point FB be connected to the AD2 pin of internal logic control module as output voltage feedback point.
Boosting principle: 1. charging processes: during the charging process, (Q1 conducting) is closed the switch, at this moment, input voltage flows through electricity
Feel L1.Q2 is closed, and prevents capacitor C1 from discharging over the ground by Q1.Since input is direct current, so the electric current on inductance is with certain
Ratio it is linearly increasing, this ratio is related with inductance size.As inductive current increases, energy is stored in inductance.2. electric discharge
Process: when switch disconnects (Q1 cut-off, Q2 conducting), due to the electric current retention performance of inductance, the electric current for flowing through inductance will not be at once
Value when becoming 0, but slowly being finished from charging becomes 0.And original circuit has disconnected, then inductance can only be put by Q2
Electricity, i.e. inductance start to charge to capacitor C1, and capacitor both end voltage increases, and voltage is higher than input voltage at this time, and boosting finishes.
Voltage-regulation principle: 1. programs can set target output voltage V by programming to internal logic
(target).And the output voltage of VOUT can be adjusted by the duty ratio of PWM.2. when PWM pin is fixed with one
When the waveform of rate-adaptive pacemaker particular duty cycle, the output voltage of VOUT is higher than input voltage VIN；It at this time can be with by feedback point FB
Collect output voltage V (OUT)=V (FB) * (R3+R4)/R4.By programming in logic, to output voltage V (OUT) and target electricity
Pressure V (target) compares.If V (OUT) < V (target), the duty ratio of PWM output, at this time output voltage meeting are increased
Increase；If V (OUT) > V (target), reduce the duty ratio of PWM output, output voltage can reduce at this time；Internal logic mould
Then block adjusts duty ratio, may eventually form a dynamic equilibrium by constantly comparison output voltage and target voltage, so that
V (OUT)=V (target).
Overcurrent protection principle: 1. is avoid in boost process, and electric current is excessive and damages chip, when real-time monitoring being needed to boost
Electric current, if electric current is excessive, in time reduce duty ratio or shutdown booster circuit, protect chip.2. when Q1 is opened, input electricity
Pressure flows to ground by Q1, R1, and the voltage V (R1) for monitoring the both ends R1 at this time can then calculate electric current I (load)=V by Q1
(R1)/R1；Since R1 can select a small valued resistor, both end voltage also can be smaller, needs by N2 pairs of amplifying device
Voltage could be detected accurately by internal logic after amplifying.After internal logic detects voltage, pass through fortune
It calculates it can be concluded that actual electric current I (load), and the receiving electric current I (max) of itself and Q1 is compared.If I (load) >=I
(max) it then needs to turn down power or shutdown, protects chip.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art,
Without departing from the concept of the present invention, various modifications and improvements can be made, these belong to practical new
The protection scope of type.
Claims (2)
1. a kind of chip of PLC technology output voltage size, which is characterized in that set including chip carrier, on chip carrier
Some master control logic modules, the DC/DC converter being connect with master control logic module, and the liter being connect respectively with master control logic module
Volt circuit, current feedback and Voltage Feedback；
The DC/DC converter is connect with battery；The boost inductance connected on the booster circuit；
The DC/DC converter is connect with boost inductance；The current feedback is connect with booster circuit；
The Voltage Feedback is connect with booster circuit.
2. a kind of chip of PLC technology output voltage size according to claim 1, which is characterized in that the liter
Volt circuit includes the power switch tube connecting with master control logic module and phase inverter, and the rectifying tube connecting with phase inverter；
The current feedback includes the current sampling amplifier connecting with master control logic module, and is connected with current sampling amplifier
The current sampling resistor connect;
The Voltage Feedback includes Voltage Feedback resistance；
The boost inductance includes the external energy storage inductor connecting with battery, and the filtering that battery is connected with chip carrier respectively
Capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822232149.9U CN209200935U (en) | 2018-12-28 | 2018-12-28 | A kind of chip of PLC technology output voltage size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822232149.9U CN209200935U (en) | 2018-12-28 | 2018-12-28 | A kind of chip of PLC technology output voltage size |
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| Publication Number | Publication Date |
|---|---|
| CN209200935U true CN209200935U (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822232149.9U Active CN209200935U (en) | 2018-12-28 | 2018-12-28 | A kind of chip of PLC technology output voltage size |
Country Status (1)
| Country | Link |
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| CN (1) | CN209200935U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072738A (en) * | 2020-09-02 | 2020-12-11 | 浙江启扬智能科技有限公司 | Power management system of handheld device |
| CN113976380A (en) * | 2021-10-27 | 2022-01-28 | 深圳宇凡微电子有限公司 | Method for driving atomization sheet to work by self-made high-frequency pwm signal of single chip microcomputer |
-
2018
- 2018-12-28 CN CN201822232149.9U patent/CN209200935U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072738A (en) * | 2020-09-02 | 2020-12-11 | 浙江启扬智能科技有限公司 | Power management system of handheld device |
| CN113976380A (en) * | 2021-10-27 | 2022-01-28 | 深圳宇凡微电子有限公司 | Method for driving atomization sheet to work by self-made high-frequency pwm signal of single chip microcomputer |
| CN113976380B (en) * | 2021-10-27 | 2023-01-13 | 深圳宇凡微电子有限公司 | Method for driving atomization sheet to work by self-made high-frequency pwm signal of single chip microcomputer |
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