CN205142166U - Switch delay circuit and bluetooth speaker of bluetooth chip - Google Patents
Switch delay circuit and bluetooth speaker of bluetooth chip Download PDFInfo
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- CN205142166U CN205142166U CN201520838904.1U CN201520838904U CN205142166U CN 205142166 U CN205142166 U CN 205142166U CN 201520838904 U CN201520838904 U CN 201520838904U CN 205142166 U CN205142166 U CN 205142166U
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- bluetooth chip
- switching tube
- delay circuit
- bluetooth
- interrupteur
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Abstract
The utility model provides a switch delay circuit and bluetooth speaker of bluetooth chip belongs to the circuit field. The switch delay circuit of this bluetooth chip, it links to each other with the bluetooth chip to include does the bluetooth chip provides the power module that the switch made ability level and operating voltage, connect in between power module positive terminal and the bluetooth chip, control the switch of bluetooth chip makes circular telegram delay time's between ability level and the operating voltage delay module. Through will postpone the module connect with power module between the bluetooth chip, can make at bluetooth chip feeder ear and bluetooth chip switch and can hold when switching on simultaneously, realize that bluetooth chip feeder ear and switch make the circular telegram between hold postpone, avoided because of the while phenomenon that the bluetooth chip that leads to can't normally work of switching on.
Description
Technical field
The utility model relates to circuit field, particularly relates to a kind of delay circuit and Baffle Box of Bluetooth of Bluetooth chip.
Background technology
Nowadays along with the continuous opening of technical information and the universal of smart electronics terminal, it is more and more easier that electronics fan wants to realize simple thing joint control system voluntarily in the family.
But in the application, because the power input of Bluetooth chip and the switching on and shutting down control end of Bluetooth chip are energized simultaneously during hard start, easily generation can not the phenomenon of normal boot-strap for existing Bluetooth chip.Such as: in the application of bluetooth CSR_86XX family chip, due to the internal structure reason of this Bluetooth chip, after the switching on and shutting down control end of power input and Bluetooth chip is energized simultaneously, the earth terminal of this Bluetooth chip cannot realize the judgement of input voltage fast according to the level signal accessed simultaneously, cause this Bluetooth chip normally to work.
Utility model content
The object of the utility model embodiment is the delay circuit and the Baffle Box of Bluetooth that provide a kind of Bluetooth chip, be intended to solve the power input of existing Bluetooth chip and switch control terminal be energized simultaneously occurred can not the problem of normal boot-strap work.
Embodiment of the present utility model is achieved in that a kind of delay circuit of Bluetooth chip, is connected with Bluetooth chip, and described delay circuit comprises:
For described Bluetooth chip provides the power module of switch enable level and operating voltage;
Be connected between described power module positive terminal and described Bluetooth chip, control the Postponement module be energized time of delay between the switch enable level of described Bluetooth chip and operating voltage.
Power module is the batteries that lithium storage battery is formed, and the positive pole of described batteries is connected to the power input of described Postponement module, and the negative pole of described batteries is connected with the earth terminal of described Bluetooth chip.
Postponement module comprises interrupteur SW 1, power supply protection resistance R1, isolation resistance R2, resistance R3, switching tube Q1 and energy storage capacitor C1;
The not moved end of described interrupteur SW 1 is the power input of described Postponement module, be connected with described power module positive terminal, the moved end of described interrupteur SW 1 is the power output end of Postponement module, be connected with described Bluetooth chip feeder ear, described power supply protection resistance R1 first end is connected with the moved end of described interrupteur SW 1, described power supply protection resistance R1 second end is connected with the hot end of described switching tube Q1, the hot end of described switching tube Q1 is the delay output of described Postponement module, be connected with described Bluetooth chip switch enable end, described isolation resistance R2 first end is connected with described power supply protection resistance R1 first end, described isolation resistance R2 second end is connected with described switching tube Q1 hot end, the control end of described switching tube Q1 is connected with described energy storage capacitor C1 first end, described energy storage capacitor C1 second end is connected with described isolation resistance R2 first end, described resistance R3 is connected with between the control end of described switching tube Q1 and cold end, the cold end ground connection of described switching tube Q1.
Optionally, interrupteur SW 1 is single-pole double-throw switch (SPDT) SW1, and the not moved end of described interrupteur SW 1 is the not moved end of described single-pole double-throw switch (SPDT) SW1, and the moved end of described interrupteur SW 1 is the moved end of described single-pole double-throw switch (SPDT) SW1.
Optionally, energy storage capacitor C1 is bipolarity electric capacity C1, and described energy storage capacitor C1 first end is the negative pole end of described bipolarity electric capacity C1, and described energy storage capacitor C1 second end is the positive terminal of described bipolarity electric capacity C1.
Optionally, switching tube Q1 is JFET pipe, metal-oxide-semiconductor or triode.
Optionally, switching tube Q1 is NMOS tube Q1, and the hot end of described switching tube Q1, cold end and control end are respectively the drain electrode end of described NMOS tube Q1, source terminal and gate terminal.
Optionally, switching tube Q1 is NPN type triode Q1, and the hot end of described switching tube Q1, cold end and control end are respectively the collector electrode of described NPN type triode Q1, emitter and base stage.
Another object of embodiment of the present utility model is to provide a kind of Baffle Box of Bluetooth, and this Baffle Box of Bluetooth comprises the delay circuit of Bluetooth chip as above.
The delay circuit of a kind of Bluetooth chip provided by the utility model and Baffle Box of Bluetooth, be connected with Bluetooth chip, comprise for described Bluetooth chip provides the power module of switch enable level and operating voltage, and be connected between described power module positive terminal and Bluetooth chip, control the Postponement module be energized time of delay between the switch enable level of described Bluetooth chip and operating voltage.By by Postponement module connect and between power module and Bluetooth chip, Postponement module can when Bluetooth chip feeder ear and Bluetooth chip switch enable end be energized simultaneously, the energising realized between Bluetooth chip feeder ear and switch enable end postpones, and avoids the phenomenon that cannot normally work because of the Bluetooth chip that energising causes simultaneously.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the delay circuit of Bluetooth chip of the present utility model.
Fig. 2 is the circuit diagram of the delay circuit of Bluetooth chip of the present utility model.
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.
The utility model embodiment provides a kind of delay circuit of Bluetooth chip, be intended to solve the power input of existing Bluetooth chip and switch control terminal be energized simultaneously occurred can not the problem of normal boot-strap work.
Fig. 1 shows the structured flowchart of the delay circuit of Bluetooth chip of the present utility model.
As shown in Figure 1, the delay circuit 100 of Bluetooth chip, is connected with Bluetooth chip 200.Delay circuit 100 comprises: for Bluetooth chip 200 provides the power module 10 of switch enable level and operating voltage, be connected between power module 10 positive terminal and Bluetooth chip 200, control the Postponement module 20 be energized time of delay between the switch enable level of Bluetooth chip 200 and operating voltage.
In other embodiments of the present utility model, the delay circuit 100 of Bluetooth chip also can be attached to controller or by the functional circuit in controller.By electric lead or can the data wire of transmission of electric signals can be connected between Postponement module 20 with Bluetooth chip 200.
Fig. 2 shows the circuit diagram of the delay circuit of Bluetooth chip of the present utility model.
Power module 10 can be the batteries that lithium storage battery is formed, and as shown in Figure 2, the positive pole of batteries is connected to the power input of Postponement module 20, and the negative pole of batteries is connected with the earth terminal of Bluetooth chip 200.
In other embodiments of the present utility model, according to the power demands of overall circuit or Bluetooth chip circuit, power module 10 can export multiple different operating voltage simultaneously, to power for overall circuit.Such as: the operating voltage of Bluetooth chip 200 is all 5V, the operating voltage of Postponement module 20 is 3.3V, and power module 10 can export the supply power voltage of 5V and 3.3V simultaneously, wherein, output voltage is that the feeder ear of 5V connects Bluetooth chip 200, and output voltage is the power supply termination Postponement module 20 of 3.3V.
In other embodiments of the utility model, power module 10 can be the power supply of AC-DC non-isolated, the power supply of AC-DC non-isolated can realize stable voltage and export in the scope of AC85V ~ 265V alternating current, the output voltage of this power module 10 is stable 5V output voltage, for Bluetooth chip 200 provides operating voltage, its maximum output current is 1A.In addition, 5V output voltage is converted to 3.3V output voltage, to power for Postponement module 20 by the low pressure difference linear voltage regulator of its inside by the power supply of AC-DC non-isolated.
As shown in Figure 2, Postponement module 20 comprises interrupteur SW 1, power supply protection resistance R1, isolation resistance R2, resistance R3, switching tube Q1 and energy storage capacitor C1.
The not moved end of interrupteur SW 1 is the power input of described Postponement module, is connected with power module positive terminal, and the moved end of interrupteur SW 1 is the power output end of Postponement module, is connected with Bluetooth chip 200 feeder ear Vin.Power supply protection resistance R1 first end is connected with the moved end of interrupteur SW 1, and power supply protection resistance R1 second end is connected with the hot end of switching tube Q1.The hot end of switching tube Q1 is the delay output of Postponement module, is connected with Bluetooth chip switch enable end MFB.Isolation resistance R2 first end is connected with power supply protection resistance R1 first end, and isolation resistance R2 second end is connected with switching tube Q1 hot end.The control end of switching tube Q1 is connected with energy storage capacitor C1 first end, and energy storage capacitor C1 second end is connected with described isolation resistance R2 first end.Described resistance R3 is connected with, the cold end ground connection of switching tube Q1 between the control end of switching tube Q1 and cold end.
In the present embodiment, energy storage capacitor C1 is bipolarity electric capacity C1, and described energy storage capacitor C1 first end is the negative pole end of described bipolarity electric capacity C1, and described energy storage capacitor C1 second end is the positive terminal of described bipolarity electric capacity C1.
In other embodiments of the present utility model, optionally, interrupteur SW 1 is single-pole double-throw switch (SPDT) SW1, and the not moved end of interrupteur SW 1 is the not moved end of single-pole double-throw switch (SPDT) SW1, and the moved end of interrupteur SW 1 is the moved end of single-pole double-throw switch (SPDT) SW1.
Optionally, switching tube Q1 is JFET pipe, metal-oxide-semiconductor or triode.Such as: switching tube Q1 is NMOS tube Q1, the hot end of switching tube Q1, cold end and control end are respectively the drain electrode end of NMOS tube Q1, source terminal and gate terminal.Again such as: the collector electrode that switching tube Q1 is the hot end of NPN type triode Q1, switching tube Q1, cold end and control end are respectively NPN type triode Q1, emitter and base stage.
In actual application, can select according to the cast of circuit design requirements switch tube Q1, to reach for the purpose of the delay performance at utmost realizing Postponement module 20.
Consult the delay circuit of the Bluetooth chip that Fig. 2 the utility model embodiment provides, Bluetooth chip 200 is selected to be the Bluetooth chip of model C SR_86XX series, interrupteur SW 1 is single-pole double-throw switch (SPDT) SW1, switching tube Q1 is NMOS tube Q1, and preferred energy storage capacitor C1 is the bipolarity electric capacity C1 of 10 μ F, its specific works principle is as follows:
As turn on-switch SW1, the positive pole of power module 10 flows out the feeder ear Vin that electric current enters Bluetooth chip 200, simultaneously for energy storage capacitor C1 charges.Bluetooth chip 200 feeder ear Vin is energized, and because the ground terminal GND of Bluetooth chip is connected with the negative pole end of power module 10, now, defines loop between Bluetooth chip 200 and power module 10.Due to the negative pole end of energy storage capacitor C1 to be bipolarity electric capacity C1, energy storage capacitor C1 first end be bipolarity electric capacity C1, energy storage capacitor C1 second end is the positive terminal of described bipolarity electric capacity C1.When energy storage capacitor C1 is in charged state, the grid of NMOS tube Q1 is low level, and is all low level, now NMOS tube Q1 conducting due to the source electrode of NMOS tube Q1, and the switch enable end MFB of Bluetooth chip 200 is low level.
Energy storage capacitor C1 is the bipolarity electric capacity C1 of 10 μ F, and its discharge and recharge time is in the circuit 2 seconds.When after turn on-switch SW1, energy storage capacitor C1 charging complete, because electric capacity C1 first end is the negative pole end of bipolarity electric capacity C1, energy storage capacitor C1 second end is the positive terminal of described bipolarity electric capacity C1.When energy storage capacitor C1 charging complete, the grid of NMOS tube Q1 is high level, and the drain electrode of NMOS tube Q1 is high level, and due to the source electrode of NMOS tube Q1 be low level, now NMOS tube Q1 cut-off, switch enable end MFB is high level.
Another object of embodiment of the present utility model is to provide a kind of Baffle Box of Bluetooth, and this Baffle Box of Bluetooth comprises the delay circuit 100 of the Bluetooth chip in above-described embodiment.
The improvement content of Baffle Box of Bluetooth provided due to the present embodiment is associated with delay circuit 100 technology contents of the Bluetooth chip in the various embodiments described above, repeats no more herein.
The delay circuit 100 of a kind of Bluetooth chip provided by the utility model, be connected with Bluetooth chip 200, comprise for Bluetooth chip 200 provides the power module 10 of switch enable level and operating voltage, and be connected between power module 10 positive terminal and Bluetooth chip 200, control the Postponement module 20 be energized time of delay between the switch enable level of Bluetooth chip 200 and operating voltage.By Postponement module 20 to be connected and between power module 10 and Bluetooth chip 200, Postponement module 20 can when Bluetooth chip 200 feeder ear and Bluetooth chip switch enable end be energized simultaneously, the energising realized between Bluetooth chip 200 feeder ear and switch enable end postpones, and avoids the phenomenon that cannot normally work because of the Bluetooth chip 200 that energising causes simultaneously.
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 (9)
1. a delay circuit for Bluetooth chip, is connected with Bluetooth chip, it is characterized in that, described delay circuit comprises:
For described Bluetooth chip provides the power module of switch enable level and operating voltage;
Be connected between described power module positive terminal and described Bluetooth chip, control the Postponement module be energized time of delay between the switch enable level of described Bluetooth chip and operating voltage.
2. the delay circuit of Bluetooth chip as claimed in claim 1, it is characterized in that, described power module is the batteries that lithium storage battery is formed, the positive pole of described batteries is connected to the power input of described Postponement module, and the negative pole of described batteries is connected with the earth terminal of described Bluetooth chip.
3. the delay circuit of Bluetooth chip as claimed in claim 1, it is characterized in that, described Postponement module comprises interrupteur SW 1, power supply protection resistance R1, isolation resistance R2, resistance R3, switching tube Q1 and energy storage capacitor C1;
The not moved end of described interrupteur SW 1 is the power input of described Postponement module, be connected with described power module positive terminal, the moved end of described interrupteur SW 1 is the power output end of Postponement module, be connected with described Bluetooth chip feeder ear, described power supply protection resistance R1 first end is connected with the moved end of described interrupteur SW 1, described power supply protection resistance R1 second end is connected with the hot end of described switching tube Q1, the hot end of described switching tube Q1 is the delay output of described Postponement module, be connected with described Bluetooth chip switch enable end, described isolation resistance R2 first end is connected with described power supply protection resistance R1 first end, described isolation resistance R2 second end is connected with described switching tube Q1 hot end, the control end of described switching tube Q1 is connected with described energy storage capacitor C1 first end, described energy storage capacitor C1 second end is connected with described isolation resistance R2 first end, described resistance R3 is connected with between the control end of described switching tube Q1 and cold end, the cold end ground connection of described switching tube Q1.
4. the delay circuit of Bluetooth chip as claimed in claim 3, it is characterized in that, described interrupteur SW 1 is single-pole double-throw switch (SPDT) SW1, and the not moved end of described interrupteur SW 1 is the not moved end of described single-pole double-throw switch (SPDT) SW1, and the moved end of described interrupteur SW 1 is the moved end of described single-pole double-throw switch (SPDT) SW1.
5. the delay circuit of Bluetooth chip as claimed in claim 3, it is characterized in that, described energy storage capacitor C1 is bipolarity electric capacity C1, and described energy storage capacitor C1 first end is the negative pole end of described bipolarity electric capacity C1, and described energy storage capacitor C1 second end is the positive terminal of described bipolarity electric capacity C1.
6. the delay circuit of Bluetooth chip as claimed in claim 3, is characterized in that, described switching tube Q1 is JFET pipe, metal-oxide-semiconductor or triode.
7. the delay circuit of Bluetooth chip as claimed in claim 6, it is characterized in that, described switching tube Q1 is NMOS tube Q1, and the hot end of described switching tube Q1, cold end and control end are respectively the drain electrode end of described NMOS tube Q1, source terminal and gate terminal.
8. the delay circuit of Bluetooth chip as claimed in claim 6, it is characterized in that, described switching tube Q1 is NPN type triode Q1, and the hot end of described switching tube Q1, cold end and control end are respectively the collector electrode of described NPN type triode Q1, emitter and base stage.
9. a Baffle Box of Bluetooth, is characterized in that, described Baffle Box of Bluetooth comprises the delay circuit of the Bluetooth chip as described in claim 1-8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520838904.1U CN205142166U (en) | 2015-10-27 | 2015-10-27 | Switch delay circuit and bluetooth speaker of bluetooth chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520838904.1U CN205142166U (en) | 2015-10-27 | 2015-10-27 | Switch delay circuit and bluetooth speaker of bluetooth chip |
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| Publication Number | Publication Date |
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| CN205142166U true CN205142166U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520838904.1U Active CN205142166U (en) | 2015-10-27 | 2015-10-27 | Switch delay circuit and bluetooth speaker of bluetooth chip |
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| CN (1) | CN205142166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113115279A (en) * | 2020-01-10 | 2021-07-13 | 奉加微电子（上海）有限公司 | Automatic association pairing system and method for ammeter and circuit breaker |
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2015
- 2015-10-27 CN CN201520838904.1U patent/CN205142166U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113115279A (en) * | 2020-01-10 | 2021-07-13 | 奉加微电子（上海）有限公司 | Automatic association pairing system and method for ammeter and circuit breaker |
| CN113115279B (en) * | 2020-01-10 | 2024-03-26 | 奉加科技(上海)股份有限公司 | Automatic association pairing system and method for ammeter and circuit breaker |
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| 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: Longgang District of Shenzhen City, Guangdong province 518116 Ping Street Takahashi Industrial Park East Area Patentee after: SHENZHE GUANXU ELECTRONIC CO., LTD. Address before: Longgang District of Shenzhen City, Guangdong province 518116 Ping Street Takahashi Industrial Park East Area Patentee before: Shenzhen Grandsun Electronic Co., Ltd. |