CN207965578U - A kind of electric toothbrush control circuit - Google Patents
A kind of electric toothbrush control circuit Download PDFInfo
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- CN207965578U CN207965578U CN201820427640.4U CN201820427640U CN207965578U CN 207965578 U CN207965578 U CN 207965578U CN 201820427640 U CN201820427640 U CN 201820427640U CN 207965578 U CN207965578 U CN 207965578U
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- upt9852
- control chip
- battery
- main control
- circuit
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Abstract
The utility model provides a kind of electric toothbrush control circuit,It includes battery BT1,Main control chip UPT9852,Boost inductance L1,Filter capacitor C1,C2,Button S1,Resistance R1,Metal-oxide-semiconductor Q1 and motor MG1,The anode of battery BT1 is connected by boost inductance L1 with the pin LX of main control chip UPT9852,The cathode of battery BT1 is connected by button S1 with the pin PA3 of main control chip UPT9852,The pin VDD of main control chip UPT9852 passes through filter capacitor C1 respectively,C2 is connected with the pin GND of main control chip UPT9852,The grid of metal-oxide-semiconductor Q1 is connected by resistance R1 with the pin PA2 of main control chip UPT9852,The drain electrode of metal-oxide-semiconductor Q1 is connected with the cathode of battery BT1,Motor MG1 is connected between the source electrode of metal-oxide-semiconductor Q1 and the anode of battery BT1.The electric toothbrush control circuit of the utility model can support single battery power and it is at low cost.
Description
Technical field
The utility model is related to field of electric toothbrushes, and in particular to a kind of low cost single-unit changable electric is battery-powered electronic
Toothbrush control circuit.
Background technology
Work is (conventional because chip is unable to low-voltage (less than under 2.0V) for the interchangeable electric toothbrush control program of multiple batteries
The operating voltage of chip：2.2V~5.5V), product is needed with battery (dry cell 3.0V, Ni-MH batteries more than two sections or two sections
2.4V) power to control circuit, because battery pack volume influence product structure and appearance are difficult to develop toward miniaturization, Er Qieyin
For toothbrush load motor transient starting when influence to mains voltage ripple, when causing battery capacity relatively low, electric toothbrush control
Circuit low-voltage reset cannot really be exhausted battery capacity.
Using external two chip portfolios of boost chip+main control chip control program since it is desired that using two chips into
Row control, peripheral circuit is more complex, influences the whole component cost, the layout of pcb board and the difficulty of production and processing of scheme.It adopts
With customization ASI C special circuits, mode capabilities fix, can not change, and different product is using dumb, and preparation cycle is long, change
Function needs to redesign chip circuit, of high cost.
Utility model content
The purpose of this utility model is to provide a kind of battery-powered electric toothbrush control circuit of inexpensive single-unit changable electric.
The utility model in order to solve its technical problem used by technical solution be：
A kind of electric toothbrush control circuit comprising battery BT1, main control chip UPT9852, boost inductance L1, filtered electrical
The anode for holding C1, C2, button S1, resistance R1, metal-oxide-semiconductor Q1 and motor MG1, battery BT1 passes through boost inductance L1 and main control chip
The pin LX of UPT9852 is connected, and the cathode of battery BT1 is connected by button S1 with the pin PA3 of main control chip UPT9852
It connects, the pin VDD of main control chip UPT9852 passes through the pin GND phases of filter capacitor C1, C2 and main control chip UPT9852 respectively
Connection, the grid of metal-oxide-semiconductor Q1 is connected by resistance R1 with the pin PA2 of main control chip UPT9852, the drain electrode of metal-oxide-semiconductor Q1 and
The cathode of battery BT1 is connected, and motor MG1 is connected between the source electrode of metal-oxide-semiconductor Q1 and the anode of battery BT1.
Further, battery BT1 uses 1.5V dry cells or 1.2V Ni-MH batteries.
Further, main control chip UPT9852 be internally integrated 4 microcontroller kernels and respectively with 4 microcontroller kernels
Program storage, static store, low-voltage reset circuit, watchdog circuit, timer, the internal oscillator electricity being connected
Road, port control circuit, synchronous voltage booster circuit and electric power management circuit.
Further, main control chip UPT9852 is encapsulated using SOP8 feet position.
Compared with prior art, the utility model has the following advantages that：
Synchronous voltage booster circuit built in main control chip UPT9852 can start work with ultralow pressure (0.7V), be not necessarily to multiple batteries
Power supply may be used single-unit dry cell or the power supply of single-unit Ni-MH battery, be conducive to electric electric toothbrush and develop toward miniaturization；Master control
Chip UPT9852 use built-in high efficiency synchronous boosting single chip solution, have it is at low cost, peripheral few, wiring be easy, facilitate life
The features such as production.
Description of the drawings
Fig. 1 is the structural schematic diagram of the electric toothbrush control circuit of the utility model.
Fig. 2 is the inner bay composition of the main control chip UPT9852 in Fig. 1.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The realization of the utility model is described in detail below in conjunction with specific embodiment.
As shown in Figure 1, the embodiment of the present invention provides a kind of electric toothbrush control circuit comprising including battery BT1, master control
Chip UPT9852, boost inductance L1, filter capacitor C1, C2, button S1, resistance R1, metal-oxide-semiconductor Q1 and motor MG1, battery BT1's
Anode is connected by boost inductance L1 with the pin LX of main control chip UPT9852, and the cathode of battery BT1 passes through button S1 and master
The pin PA3 of control chip UPT9852 is connected, the pin VDD of main control chip UPT9852 respectively by filter capacitor C1, C2 with
The pin GND of main control chip UPT9852 is connected, the pin that the grid of metal-oxide-semiconductor Q1 passes through resistance R1 and main control chip UPT9852
PA2 is connected, and the drain electrode of metal-oxide-semiconductor Q1 is connected with the cathode of battery BT1, and motor MG1 is connected to the source electrode and battery of metal-oxide-semiconductor Q1
Between the anode of BT1.Wherein, battery BT1 uses 1.5V dry cells or 1.2V Ni-MH batteries.
As shown in Fig. 2, in the present embodiment, main control chip UPT9852 is encapsulated using the SOP8 feet position of low cost.Main control chip
UPT9852 has been internally integrated 4 microcontroller kernels and the program storage being connected respectively with 4 microcontroller kernels, static number
According to memory, low-voltage reset circuit, watchdog circuit, timer, internal oscillator circuit, port control circuit, synchronous boost
Circuit and electric power management circuit.Main control chip UPT9852 is minimum can to start boosting work with 0.7V, by internal booster circuit,
The 1.5V voltages of battery BT1 are raised to 3.0V (representative value), supply chip interior logic voltage and peripheral components power supply.Pass through list
Final binary code is simultaneously burnt to program storage by cd-rom recorder different function may be implemented by piece machine software programming
The electric toothbrush scheme of single battery power supply.
The operation principle of above-mentioned electric toothbrush control circuit is as follows:
The battery BT1 voltages powered are raised to stable 3.0V electricity by the synchronous voltage booster circuit inside main control chip UPT9852
Pressure (representative value, which is 3.0V boost output voltages, to be trimmed by wafer tests), the output voltage after boosting is for chip interior
Logic and peripheral components work.Synchronous voltage booster circuit static state power consumption<30uA.Resistance R1 and metal-oxide-semiconductor Q1 is formed as electric toothbrush horse
Up to driving circuit.In conjunction with software mode, realizes key switch machine and mode and gear selection and automatic shutdown timing function is electronic
Toothbrush scheme powers on and is defaulted as off-mode, and the PA2 feet output of main control chip UPT9852 is low-voltage, and metal-oxide-semiconductor is not turned on, tooth
Brush vibrating motor does not work, and short-press S1 keys are primary, and the PA2 foot output duty cycles of U1 are 60% (pulse modulated circuit) PWM, frequency
Rate is 200Hz~400Hz, is at this time toothbrush motor low or first gear, and second of short-press S1 keys, the PA2 feet of main control chip UPT9852 are defeated
Going out 100% high level signal, motor is top gear at this time, short-press S1 keys again, into OFF mode, main control chip at this time
The PA2 feet of UPT9852 export low-voltage, and chip enters the sleep state of low-power consumption.After button enters operating mode, chip has
2 minutes automatic timing functions, every prompt in 30 seconds, user converted brush direction, after 2 minutes reach, automatic shutdown.In circuit
PA0, PA1, PB1 are Function Extension port, can be used for low-voltage electric power detection, gear LED indication, under-voltage by software cooperation
LED indication etc..
Compared with prior art, the utility model has the following advantages that：
Synchronous voltage booster circuit built in main control chip UPT9852 can start work with ultralow pressure (0.7V), be not necessarily to multiple batteries
Power supply may be used single-unit dry cell or the power supply of single-unit Ni-MH battery, be conducive to electric electric toothbrush and develop toward miniaturization；Master control
Chip UPT9852 use built-in high efficiency synchronous boosting single chip solution, have it is at low cost, peripheral few, wiring be easy, facilitate life
The features such as production.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (4)
1. a kind of electric toothbrush control circuit, which is characterized in that including battery BT1, main control chip UPT9852, boost inductance L1,
The anode of filter capacitor C1, C2, button S1, resistance R1, metal-oxide-semiconductor Q1 and motor MG1, battery BT1 pass through boost inductance L1 and master
The pin LX of control chip UPT9852 is connected, the pin PA3 that the cathode of battery BT1 passes through button S1 and main control chip UPT9852
It is connected, the pin VDD of main control chip UPT9852 passes through the pin of filter capacitor C1, C2 and main control chip UPT9852 respectively
GND is connected, and the grid of metal-oxide-semiconductor Q1 is connected by resistance R1 with the pin PA2 of main control chip UPT9852, the leakage of metal-oxide-semiconductor Q1
Pole is connected with the cathode of battery BT1, and motor MG1 is connected between the source electrode of metal-oxide-semiconductor Q1 and the anode of battery BT1.
2. electric toothbrush control circuit as described in claim 1, which is characterized in that battery BT1 using 1.5V dry cells or
1.2V Ni-MH battery.
3. electric toothbrush control circuit as described in claim 1, which is characterized in that main control chip UPT9852 has been internally integrated 4
Position microcontroller kernel and the program storage being connected respectively with 4 microcontroller kernels, static store, low-voltage reset
Circuit, watchdog circuit, timer, internal oscillator circuit, port control circuit, synchronous voltage booster circuit and electric power management circuit.
4. electric toothbrush control circuit as claimed in claim 3, which is characterized in that main control chip UPT9852 uses SOP8 feet
Position encapsulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820427640.4U CN207965578U (en) | 2018-03-28 | 2018-03-28 | A kind of electric toothbrush control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820427640.4U CN207965578U (en) | 2018-03-28 | 2018-03-28 | A kind of electric toothbrush control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207965578U true CN207965578U (en) | 2018-10-12 |
Family
ID=63726336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820427640.4U Active CN207965578U (en) | 2018-03-28 | 2018-03-28 | A kind of electric toothbrush control circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN207965578U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347378A (en) * | 2018-10-24 | 2019-02-15 | 深圳联合辉腾科技有限公司 | A kind of frangrance spraying device control circuit |
| CN110327127A (en) * | 2019-08-08 | 2019-10-15 | 上海飞科电器股份有限公司 | Electric toothbrush prevents spatter control system and electric toothbrush |
-
2018
- 2018-03-28 CN CN201820427640.4U patent/CN207965578U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347378A (en) * | 2018-10-24 | 2019-02-15 | 深圳联合辉腾科技有限公司 | A kind of frangrance spraying device control circuit |
| CN110327127A (en) * | 2019-08-08 | 2019-10-15 | 上海飞科电器股份有限公司 | Electric toothbrush prevents spatter control system and electric toothbrush |
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