CN204836109U - Battery earphone outage control circuit that resets - Google Patents
Battery earphone outage control circuit that resets Download PDFInfo
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- CN204836109U CN204836109U CN201520547265.3U CN201520547265U CN204836109U CN 204836109 U CN204836109 U CN 204836109U CN 201520547265 U CN201520547265 U CN 201520547265U CN 204836109 U CN204836109 U CN 204836109U
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Abstract
The utility model relates to an earphone equipment technical field provides a battery earphone outage control circuit that resets, including the control chip U1 and the chip U2 that restores to the throne, control chip U1's pin IN and battery voltage output VBAT are connected, and control chip U1's pin OUT connects the VCC end, chip U2's the pin VDD of restoring to the throne passes through bleeder circuit and first electric current nodal connection, the pin CE that chip U2's the pin RST of restoring to the throne passes through delay circuit and control chip U1 is connected, the loss of voltage that pin VDD that the setting up of bleeder circuit made the chip U2 that restores to the throne detected, when the messenger restores to the throne chip U2 controlled shutdown control chip U1, battery voltage still is higher than the battery blanking voltage, make the chip U2 that restores to the throne obtain the time delay to control chip U1's start -up and the action of closing through setting up of delay circuit, avoid the start -up of control chip U1 relapse and stop, the further headphones that has avoided holds the noise of puff.
Description
Technical field
The utility model belongs to ear speaker device technical field, particularly relates to a kind of battery earphone power-off restoration control circuit.
Background technology
The battery that a lot of earphone has it built-in, such as bluetooth earphone etc., such earphone is referred to as battery earphone.Battery earphone generally has electrification reset function, and it realizes the reset function of control chip by reset chip.Wherein, the direct-connected cell voltage output in operating voltage test side of reset chip, control chip is also direct-connected with cell voltage output.
When the operating voltage threshold values of voltage lower than control chip that cell voltage output exports, control chip power-off quits work, and because battery is when stopping power supply, voltage there will be height situation repeatedly, when the operating voltage test side of reset chip detects the operating voltage threshold values of the voltage of cell voltage output higher than above-mentioned control chip, control the startup of above-mentioned control chip and enter operating state, when the operating voltage test side of reset chip detects the operating voltage threshold values of the voltage of cell voltage output lower than above-mentioned control chip, control above-mentioned control chip power-off to stop entering resting state, this control chip is startup repeatedly and stopping under the control of reset chip, battery headset earpiece end is caused to occur the current sound of puff puff, affect the experience of user.
Utility model content
The purpose of this utility model is to provide a kind of battery earphone power-off restoration control circuit, to be intended to solve in prior art battery when stopping power supply, voltage there will be height repeatedly, control chip is startup repeatedly and stopping under the control of reset chip, cause battery headset earpiece end to occur the current sound of puff puff, affect the problem of the experience of user.
The utility model realizes like this, a kind of battery earphone power-off restoration control circuit, described battery earphone power-off restoration control circuit comprises control chip U1 and reset chip U2, described control chip U1 is provided with pin IN, pin OUT, pin CE, pin PAD and pin GND, described reset chip U2 is provided with pin VDD, pin GND and pin RST, wherein:
The pin IN of described control chip U1 is connected with cell voltage output VBAT, and the pin OUT of described control chip U1 connects VCC end, the pin GND ground connection of described control chip U1;
The first current node is provided with between the pin IN of described control chip U1 and described cell voltage output VBAT, the pin VDD of described reset chip U2 is connected with described first current node by bleeder circuit, the pin RST of described reset chip U2 is connected by the pin CE of delay circuit with described control chip U1, the pin GND ground connection of described reset chip U2.
As a kind of improved plan, described bleeder circuit comprises resistance R1, and described resistance R1 two ends are connected with the pin VDD of described first current node and described reset chip U2 respectively.
As a kind of improved plan, between the pin VDD of described reset chip U2 and described resistance R1, be provided with the 5th current node, between the circuit that described 5th current node is drawn and earth terminal, be provided with electric capacity C2.
As a kind of improved plan, described delay circuit comprises the resistance R2 between pin RST and the pin CE of described control chip U1 being arranged on described reset chip U2, be provided with the second current node between the pin CE of described resistance R2 and described control chip U1, between the circuit that described second current node is drawn and earth terminal, be provided with electric capacity C1.
As a kind of improved plan, the 3rd current node is provided with between the pin CE of described second current node and described control chip U1, be provided with the 4th current node between the pin IN of described first current node and described control chip U1, between described 3rd current node and described 4th current node, be provided with resistance R3.
As a kind of improved plan, between described 4th current node and described first current node, be provided with the 6th current node, between the circuit that described 6th current node is drawn and earth terminal, be provided with electric capacity C3.
As a kind of improved plan, between the pin OUT of described control chip U1 and described VCC holds, be provided with the 7th current node, between the circuit that described 7th current node is drawn and earth terminal, be provided with electric capacity C4.
As a kind of improved plan, between described first current node and described cell voltage output VBAT, be provided with the 8th current node, between the circuit that described 8th current node is drawn and earth terminal, be provided with electric capacity C5.
Because battery earphone power-off restoration control circuit comprises control chip U1 and reset chip U2, the pin IN of control chip U1 is connected with cell voltage output VBAT, and the pin OUT of control chip U1 connects VCC end, the pin GND ground connection of control chip U1, the first current node is provided with between the pin IN of control chip U1 and cell voltage output VBAT, the pin VDD of reset chip U2 is connected with the first current node by bleeder circuit, the pin RST of reset chip U2 is connected with the pin CE of control chip U1 by delay circuit, the pin GND ground connection of reset chip U2, the voltage that the setting of bleeder circuit makes the pin VDD of reset chip U2 detect reduces, when making reset chip U2 control closing control chip U1, cell voltage is still higher than battery cutoff voltage, simultaneously, reset chip U2 is made to obtain time delay to the startup of control chip U1 and the action of closedown by the setting of delay circuit, avoid control chip U1 startup repeatedly and stopping, further avoid the noise of headset earpiece end puff puff.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the battery earphone power-off restoration control circuit that the utility model provides;
Wherein, 1-first current node, 2-second current node, 3-the 3rd current node, 4-the 4th current node, 5-the 5th current node, 6-the 6th current node, 7-the 7th current node, 8-the 8th current node.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 shows the schematic diagram of the battery earphone power-off restoration control circuit that the utility model provides, and for convenience of explanation, only gives the part relevant to the utility model in figure.
Battery earphone power-off restoration control circuit comprises control chip U1 and reset chip U2, and control chip U1 is provided with pin IN, pin OUT, pin CE, pin PAD and pin GND, and reset chip U2 is provided with pin VDD, pin GND and pin RST, wherein:
The pin IN of control chip U1 is connected with cell voltage output VBAT, and the pin OUT of control chip U1 connects VCC end, the pin GND ground connection of control chip U1, pin PAD also ground connection;
The first current node 1 is provided with between the pin IN of control chip U1 and cell voltage output VBAT, the pin VDD of reset chip U2 is connected with the first current node 1 by bleeder circuit, the pin RST of reset chip U2 is connected with the pin CE of control chip U1 by delay circuit, the pin GND ground connection of reset chip U2.
In the utility model, above-mentioned bleeder circuit and delay circuit can adopt following setting:
(1) bleeder circuit comprises resistance R1, and resistance R1 two ends are connected with the pin VDD of the first current node 1 and reset chip respectively;
Wherein, what be provided with between the pin VDD of reset chip U2 and resistance R1 that the 5th current node the 5, five current node 5 draws is provided with electric capacity C2 between circuit and earth terminal;
The setting of this resistance R1, play the effect of dividing potential drop, the magnitude of voltage that the pin VDD reducing reset chip U2 detects, when making reset chip U2 detect that threshold voltage controls closing control chip U1, current cell voltage is still higher than battery cutoff voltage, therefore the high-low voltage repeatedly that cell voltage output occurs can not cause the startup of control chip U1 and stopping repeatedly, eliminates the Pop that voltage causes repeatedly;
(2) delay circuit comprises the resistance R2 be arranged between the pin RST of reset chip U2 and the pin CE of control chip U1, be provided with between the pin CE of resistance R2 and control chip U1 between the circuit of the second current node 2, second current node 2 extraction and earth terminal and be provided with electric capacity C1;
Be provided with between second current node 2 and the pin CE of control chip U1 to be provided with between the 4th current node the 4, three current node 3 and the 4th current node 4 between the 3rd current node 3, first current node 1 and the pin IN of control chip U1 and be provided with resistance R3;
What be provided with between above-mentioned 4th current node 4 and the first current node 1 that the 6th current node the 6, six current node 6 draws is provided with electric capacity C3 between circuit and earth terminal;
Wherein, the setting of this delay circuit, when occurring repeatedly battery output voltage, plays the effect of time delay, avoids occurring frequent starting and stops the situation of control chip U1, thus avoids the Pop that occurs that headset earpiece end occurs, to user with the experience of high-quality.
Wherein, for further improving the function of this bleeder circuit and delay circuit, other circuit devcies such as electric capacity C2 can be set in corresponding circuit, not repeat at this.
Certainly, the specific implementation of the above-mentioned bleeder circuit that provides and delay circuit, also can adopt other circuit structures, not repeat them here, but not in order to limit the utility model.
In the utility model, be provided with between pin OUT and the VCC end of control chip U1 between the circuit of the 7th current node the 7, seven current node 7 extraction and earth terminal and be provided with electric capacity C4, the design of this electric capacity C4, make whole circuit function more perfect.
In the utility model, what be provided with between the first current node 1 and cell voltage output VBAT that the 8th current node the 8, eight current node 8 draws is provided with electric capacity C5, the design of this electric capacity C5 between circuit and earth terminal, makes whole circuit function more perfect.
In the utility model, battery earphone power-off restoration control circuit comprises control chip U1 and reset chip U2, the pin IN of control chip U1 is connected with cell voltage output VBAT, and the pin OUT of control chip U1 connects VCC end, the pin GND ground connection of control chip U1, the first current node 1 is provided with between the pin IN of control chip U1 and cell voltage output VBAT, the pin VDD of reset chip U2 is connected with the first current node 1 by bleeder circuit, the pin RST of reset chip U2 is connected with the pin CE of control chip U1 by delay circuit, the pin GND ground connection of reset chip U2, the voltage that the setting of bleeder circuit makes the pin VDD of reset chip U2 detect reduces, when making reset chip U2 control closing control chip U1, cell voltage is still higher than battery cutoff voltage, simultaneously, reset chip U2 is made to obtain time delay to the startup of control chip U1 and the action of closedown by the setting of delay circuit, avoid control chip U1 startup repeatedly and stopping, further avoid the noise of headset earpiece end puff puff.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (8)
1. a battery earphone power-off restoration control circuit, it is characterized in that, described battery earphone power-off restoration control circuit comprises control chip U1 and reset chip U2, described control chip U1 is provided with pin IN, pin OUT, pin CE, pin PAD and pin GND, described reset chip U2 is provided with pin VDD, pin GND and pin RST, wherein:
The pin IN of described control chip U1 is connected with cell voltage output VBAT, and the pin OUT of described control chip U1 connects VCC end, the pin GND ground connection of described control chip U1;
The first current node is provided with between the pin IN of described control chip U1 and described cell voltage output VBAT, the pin VDD of described reset chip U2 is connected with described first current node by bleeder circuit, the pin RST of described reset chip U2 is connected by the pin CE of delay circuit with described control chip U1, the pin GND ground connection of described reset chip U2.
2. battery earphone power-off restoration control circuit according to claim 1, it is characterized in that, described bleeder circuit comprises resistance R1, and described resistance R1 two ends are connected with the pin VDD of described first current node and described reset chip U2 respectively.
3. battery earphone power-off restoration control circuit according to claim 2, it is characterized in that, be provided with the 5th current node between the pin VDD of described reset chip U2 and described resistance R1, between the circuit that described 5th current node is drawn and earth terminal, be provided with electric capacity C2.
4. battery earphone power-off restoration control circuit according to claim 1, it is characterized in that, described delay circuit comprises the resistance R2 between pin RST and the pin CE of described control chip U1 being arranged on described reset chip U2, be provided with the second current node between the pin CE of described resistance R2 and described control chip U1, between the circuit that described second current node is drawn and earth terminal, be provided with electric capacity C1.
5. battery earphone power-off restoration control circuit according to claim 4, it is characterized in that, the 3rd current node is provided with between the pin CE of described second current node and described control chip U1, be provided with the 4th current node between the pin IN of described first current node and described control chip U1, between described 3rd current node and described 4th current node, be provided with resistance R3.
6. battery earphone power-off restoration control circuit according to claim 5, it is characterized in that, be provided with the 6th current node between described 4th current node and described first current node, between the circuit that described 6th current node is drawn and earth terminal, be provided with electric capacity C3.
7. battery earphone power-off restoration control circuit according to claim 1, it is characterized in that, be provided with the 7th current node between the pin OUT of described control chip U1 and described VCC holds, between the circuit that described 7th current node is drawn and earth terminal, be provided with electric capacity C4.
8. battery earphone power-off restoration control circuit according to claim 1, it is characterized in that, be provided with the 8th current node between described first current node and described cell voltage output VBAT, between the circuit that described 8th current node is drawn and earth terminal, be provided with electric capacity C5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520547265.3U CN204836109U (en) | 2015-07-24 | 2015-07-24 | Battery earphone outage control circuit that resets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520547265.3U CN204836109U (en) | 2015-07-24 | 2015-07-24 | Battery earphone outage control circuit that resets |
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| Publication Number | Publication Date |
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| CN204836109U true CN204836109U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520547265.3U Active CN204836109U (en) | 2015-07-24 | 2015-07-24 | Battery earphone outage control circuit that resets |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484055A (en) * | 2017-08-25 | 2017-12-15 | 广东思派康电子科技有限公司 | The TWS earphones resetted with charging |
| CN107809696A (en) * | 2017-11-30 | 2018-03-16 | 成都必盛科技有限公司 | It is a kind of to establish the wireless headset interacted with Earphone box |
| CN107809697A (en) * | 2017-11-30 | 2018-03-16 | 成都必盛科技有限公司 | It is a kind of to be used to establish the Earphone box interacted with wireless headset |
| CN114063481A (en) * | 2020-07-30 | 2022-02-18 | 广东美的厨房电器制造有限公司 | Control circuit, electric equipment and control method |
-
2015
- 2015-07-24 CN CN201520547265.3U patent/CN204836109U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107484055A (en) * | 2017-08-25 | 2017-12-15 | 广东思派康电子科技有限公司 | The TWS earphones resetted with charging |
| CN107484055B (en) * | 2017-08-25 | 2023-09-08 | 广东思派康电子科技有限公司 | TWS earphone with charging reset function |
| CN107809696A (en) * | 2017-11-30 | 2018-03-16 | 成都必盛科技有限公司 | It is a kind of to establish the wireless headset interacted with Earphone box |
| CN107809697A (en) * | 2017-11-30 | 2018-03-16 | 成都必盛科技有限公司 | It is a kind of to be used to establish the Earphone box interacted with wireless headset |
| CN114063481A (en) * | 2020-07-30 | 2022-02-18 | 广东美的厨房电器制造有限公司 | Control circuit, electric equipment and control method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |