CN102931964A - Starting-up control circuit - Google Patents
Starting-up control circuit Download PDFInfo
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- CN102931964A CN102931964A CN2012104368850A CN201210436885A CN102931964A CN 102931964 A CN102931964 A CN 102931964A CN 2012104368850 A CN2012104368850 A CN 2012104368850A CN 201210436885 A CN201210436885 A CN 201210436885A CN 102931964 A CN102931964 A CN 102931964A
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Abstract
The invention discloses a starting-up control circuit. The starting-up control circuit comprises a starting-up signal port which is triggered by a low level, a pulse generation circuit which is used for output a pulse signal when other batteries are connected and a switching circuit which maintains a conducting state when receiving the pulse signal. Two ports of the switching circuit are connected with the starting-up signal port and the pulse generation circuit respectively, and another port of the switching circuit is grounded. According to the starting-up control circuit, automatic starting-up can be achieved only under the condition that the batteries are in good contact, convenience in operation for users can be provided, operation steps and the starting-up time are saved, a starting-up button can be prevented from being pressed frequently, and damage of the button is avoided.
Description
Technical field
The present invention relates to electronic technology field, relate in particular to the start control circuit of portable terminal.
Background technology
The mobile terminal-opening control circuit of prior art, all be provided with starting-up signal port (PowerOn) and starting key switch, described starting-up signal port (PowerOn) is connected with baseband chip, when the user presses key, described starting key conducting, level on starting-up signal port this moment (PowerOn) is dragged down, and baseband chip just can detect the low level on the starting-up signal port (PowerOn) like this, thus the mobile start flow process that enters eventually of control.
But such start control circuit, need the user after installing battery, also to operate starting key and can realize start, especially when portable terminal is received collision, falls, twists or is jolted, cause the battery loose contact and power down, portable terminal shuts down thus, even after battery recovery connects, portable terminal still can Auto Power On, and needs user's Manual press starting key can realize start.Like this, not only cause the trouble that operates and use to the user, but also be unfavorable for prolonging the useful life of starting key.If a kind of start control circuit is arranged, just as long as the good Auto Power On of battery contact not only can be the user operational facility is provided, save operating procedure and available machine time, can prevent that also starting key from being pressed the damage that causes by multi-frequency.
Summary of the invention
The purpose of this invention is to provide a kind of start control circuit.
Start control circuit provided by the present invention comprises the starting-up signal port that low level triggers; The pulse generating circuit that is used for output pulse signal when all the other batteries are connected; And the switching circuit that when receiving described pulse signal, keeps conducting, two ports of described switching circuit are respectively at be connected another port ground connection of described switching circuit with described pulse generating circuit with described starting-up signal port.
Start control circuit provided by the invention also comprises the delay switching circuit with ON time; Two ports of described switching circuit are respectively at be connected another port ground connection of described switching circuit with an end and the described pulse generating circuit of described delay switching circuit; The other two ends of described delay switching circuit connect respectively described starting-up signal port and portable terminal power supply.
Described switching circuit be turn-on voltage less than NPN type first triode of described pulse signal voltage value, its base stage is connected with described pulse generating circuit; Its source ground; Its collector electrode connects described starting-up signal port.
Described pulse generating circuit comprises the first electric capacity, the first diode, the first resistance and the second resistance; The positive pole of described the first electric capacity is used for being connected with battery and negative pole is connected with an end of the first resistance; The other end of described the first resistance is connected with base stage or the transistorized grid of described the first triode; The base stage of described the second resistance one end and described the first triode or transistorized grid is connected and other end ground connection; Described the first diode cathode ground connection and negative pole are connected with the negative pole of described the first electric capacity.
Described delay switching circuit comprises that the second electric capacity, the second diode, the 3rd resistance, the 4th resistance and turn-on voltage are less than the second triode of the electric power output voltage value of portable terminal; The source electrode of described the second triode is connected with the collector circuit of described the first diode; The collector electrode of described the second triode connects described starting-up signal port; Described the second diode cathode connects the power supply of portable terminal and the end that negative pole connects described the 3rd resistance; The other end of described the 3rd resistance connects the base stage of described the second triode; Described the second electric capacity one end ground connection and the other end connect the negative pole of described the second diode; Described the 4th resistance one end ground connection and the other end connect the base stage of described the second triode.
Described the first diode and described the second diode are voltage stabilizing didoe.
Described the first electric capacity and the second electric capacity are 2.2 microfarads; Described the first resistance is 2.2 kilo-ohms; Described the second resistance is 100 kilo-ohms; Described three resistance are 15 kilo-ohms; Described the 4th resistance is 200 kilo-ohms.
Described switching circuit be turn-on voltage less than the first metal-oxide-semiconductor of described pulse signal voltage value, its grid is connected with described pulse generating circuit; Its source ground; And its drain electrode connects described starting-up signal port.
Described delay switching circuit comprises that the second electric capacity, the second diode, the 3rd resistance, the 4th resistance and turn-on voltage are less than the second metal-oxide-semiconductor of the electric power output voltage value of portable terminal; The source electrode of described the second metal-oxide-semiconductor is connected with the drain circuit of described the first diode; The drain electrode of described the second metal-oxide-semiconductor connects described starting-up signal port; Described the second diode cathode connects the power supply of portable terminal and the end that negative pole connects described the 3rd resistance; The other end of described the 3rd resistance connects the grid of described the second metal-oxide-semiconductor; Described the second electric capacity one end ground connection and the other end connect the negative pole of described the second diode; Described the 4th resistance one end ground connection and the other end connect the grid of described the second metal-oxide-semiconductor.Described portable terminal power supply is VDD18 or VDD28.
Start control circuit provided by the present invention as long as the good just Auto Power On of battery contact not only can be the user operational facility is provided, is saved operating procedure and available machine time, can prevent that also starting key from being pressed the damage that causes by multi-frequency.
Description of drawings
The structural representation of the start control circuit that Fig. 1 provides for embodiment one;
The circuit diagram of the start control circuit that Fig. 2 provides for embodiment one;
The structural representation of the start control circuit that Fig. 3 provides for embodiment two;
The circuit diagram of the start control circuit that Fig. 4 provides for embodiment two.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Embodiment one
As shown in Figure 1, present embodiment provides a kind of start control circuit, comprises the starting-up signal port (PowerOn) that low level triggers, and it is characterized in that: also comprise the pulse generating circuit for output pulse signal when all the other batteries are connected; And the switching circuit that when receiving described pulse signal, keeps conducting, two ports of described switching circuit are respectively at be connected another port ground connection of described switching circuit with described pulse generating circuit with described starting-up signal port.It will be appreciated by those skilled in the art that, after described pulse generating circuit and power supply are realized being electrically connected, produce described pulse signal, described switching circuit keeps conducting state under the control of this impulse circuit, just realized described starting-up signal port ground connection, be to be low level on the described starting-up signal port, thereby triggering mobile terminals enter the start flow process.Like this, just realized that the user need not to operate starting key again just can Auto Power On as long as described battery keeps good to be connected.
As shown in Figure 2, described switching circuit be conducting voltage VBE1 value less than the NPN type first triode Q1 of described pulse signal voltage value, its base stage is connected with described pulse generating circuit; Its grounded emitter; Its collector electrode connects described starting-up signal port.
Described switching circuit can also be conducting voltage VBE1 value less than first metal-oxide-semiconductor (field effect transistor, Metal Oxid Oemiconductor) of described pulse signal voltage value, its grid is connected with described pulse generating circuit; Its source ground; And its drain electrode connects described starting-up signal port.
It will be appreciated by those skilled in the art that, the conducting voltage VBE1 value of described the first triode Q1 or the first metal-oxide-semiconductor is all less than described pulse voltage value, as long as battery connects good, described pulse generating circuit is exported described pulse signal, just can control described the first triode Q1 and the first metal-oxide-semiconductor conducting, realization drags down the starting-up signal port and is low level, thereby the control portable terminal enters the start flow process.
As shown in Figure 2, described pulse generating circuit comprises the first capacitor C 1, the first diode D1, the first resistance R 1 and the second resistance R 2; The positive pole of described the first capacitor C 1 is used for being connected with battery and negative pole is connected with an end of the first resistance R 1; The other end of described the first resistance R 1 is connected with base stage or the transistorized grid of described the first triode Q1; The base stage of described the second resistance R 2 one ends and described the first triode Q1 or transistorized grid is connected and other end ground connection; Described the first diode D1 plus earth and negative pole are connected with the negative pole of described the first capacitor C 1.It will be appreciated by those skilled in the art that, when the start control circuit that provides when described battery and present embodiment realizes that circuit is connected, the rear end of described the first capacitor C 1 can produce positive pulse signal, because the first triode Q1 that selects or the conducting voltage VBE1 value of the first metal-oxide-semiconductor are less than the magnitude of voltage of this pulse signal, therefore as long as battery realizes that with described start control circuit circuit is connected, described the first triode Q1 or the first metal-oxide-semiconductor just keep conducting, described starting-up signal port is grounded, thereby triggering mobile terminals enters the start flow process.
It will be understood by those skilled in the art that described the first capacitor C 1, the first diode D1, the first resistance R 1 are different with the parameter of the second resistance R 2, the magnitude of voltage of described pulse signal is different.Usually, the output voltage of battery of mobile terminal is 3.6V to 4.2V, and present embodiment is selected the first capacitor C 1 of 2.2UF, the first resistance R 1 of 2.2 kilo-ohms, the second resistance R 2 of 100 kilo-ohms; Described the first diode D1 selects voltage stabilizing didoe; Adopting conducting voltage VBE1 is the first triode Q1 or the first metal-oxide-semiconductor of 0.6V; The magnitude of voltage of the pulse signal that produces like this can guarantee that greater than 1V the magnitude of voltage of pulse signal is greater than conducting voltage VBE1 value.
Embodiment two
As shown in Figure 3, present embodiment provides a kind of start control circuit that prevents instant power-down, comprise the starting-up signal port (PowerOn) that low level triggers, it is characterized in that: also comprise the pulse generating circuit for output pulse signal when it is connected with battery; The switching circuit that when receiving described pulse signal, keeps conducting; And the delay switching circuit with ON time; Two ports of described switching circuit are respectively at be connected another port ground connection of described switching circuit with an end and the described pulse generating circuit of described delay switching circuit; The other two ends of described delay switching circuit connect respectively described starting-up signal port and portable terminal power supply.It will be appreciated by those skilled in the art that, keep conducting state when delay switching circuit is in its ON time, as described switching circuit conducting this moment just can realize described starting-up signal port ground connection, be to be low level on the described starting-up signal port, thereby triggering mobile terminals enter the start flow process.When delay switching circuit exceeds its ON time, described delay switching circuit is nonconducting state, no matter whether conducting of described switching circuit conducting this moment, all can't drag down the level of described starting-up signal port, like this, just realized when portable terminal power down time during less than described ON time T, can be by connecting the battery Auto Power On; And the power down time such as ON time T as described in having surpassed, then can't Auto Power On.Like this, both can guarantee because the collision of mobile phone, fall, twist or the short time power down that causes of jolting after the mobile phone Auto Power On, can also guarantee that user's mobile phone when transfering to battery again battery to be installed after the long period keeps off-mode, for the user provides more operation convenient and use impression.
As shown in Figure 4, described switching circuit be conducting voltage VBE1 value less than the first triode Q1 of described pulse signal voltage value, described the first triode Q1 is the NPN type, its base stage is connected with described pulse generating circuit; Its grounded emitter; Its collector electrode connects described delay switching circuit.
Described switching circuit can also be conducting voltage VBE1 value less than first metal-oxide-semiconductor (field effect transistor, Metal Oxid Oemiconductor) of described pulse signal voltage value, its grid is connected with described pulse generating circuit; Its source ground; And its drain electrode connects described delay switching circuit.
It will be appreciated by those skilled in the art that, the conducting voltage VBE1 value of described the first triode Q1 or the first metal-oxide-semiconductor is all less than described pulse voltage value, as long as battery connects good, described pulse generating circuit is exported described pulse signal, just can control described the first triode Q1 and the first metal-oxide-semiconductor conducting, if this moment, delay switching circuit was conducting state, then can realize the starting-up signal port dragged down and be low level, thereby the control portable terminal enters the start flow process.
As shown in Figure 4, described pulse generating circuit comprises the first capacitor C 1, the first diode D1, the first resistance R 1 and the second resistance R 2; The positive pole of described the first capacitor C 1 is used for being connected with battery and negative pole is connected with an end of the first resistance R 1; The other end of described the first resistance R 1 is connected with base stage or the transistorized grid of described the first triode Q1; The base stage of described the second resistance R 2 one ends and described the first triode Q1 or transistorized grid is connected and other end ground connection; Described the first diode D1 plus earth and negative pole are connected with the negative pole of described the first capacitor C 1.It will be appreciated by those skilled in the art that, when the start control circuit that provides when described battery and present embodiment realizes that circuit is connected, the rear end of described the first capacitor C 1 can produce positive pulse signal, because the first triode Q1 that selects or the conducting voltage VBE1 value of the first metal-oxide-semiconductor are less than the magnitude of voltage of this pulse signal, therefore as long as battery realizes that with described start control circuit circuit is connected, described the first triode Q1 or the first metal-oxide-semiconductor just keep conducting, if this moment, delay switching circuit was conducting state, described starting-up signal port can be grounded, thereby triggering mobile terminals enters the start flow process.
It will be understood by those skilled in the art that described the first capacitor C 1, the first diode D1, the first resistance R 1 are different with the parameter of the second resistance R 2, the magnitude of voltage of described pulse signal is different.Usually, the output voltage of battery of mobile terminal is 3.6V to 4.2V, and present embodiment is selected the first capacitor C 1 of 2.2UF, the first resistance R 1 of 2.2 kilo-ohms, the second resistance R 2 of 100 kilo-ohms; Described the first diode D1 selects voltage stabilizing didoe; Adopting conducting voltage VBE1 is the first triode Q1 or the first metal-oxide-semiconductor of 0.6V; The magnitude of voltage of the pulse signal that produces like this can guarantee that greater than 1V the magnitude of voltage of pulse signal is greater than conducting voltage VBE1 value.
Described delay switching circuit comprises that the second capacitor C 2, the second diode D2, the 3rd resistance R 3, the 4th resistance R 4 and turn-on voltage VBE2 are less than the second triode Q2 of the electric power output voltage value VDD of portable terminal; The emitter of described the second triode Q2 is connected with the collector circuit of described the first diode D1; The collector electrode of described the second triode Q2 connects described starting-up signal port; The anodal power supply of portable terminal and the end that negative pole connects described the 3rd resistance R 3 of connecting of described the second diode D2; The other end of described the 3rd resistance R 3 connects the base stage of described the second triode Q2; Described the second capacitor C 2 one end ground connection and the other end connect the negative pole of described the second diode D2; Described the 4th resistance R 4 one end ground connection and the other end connect the base stage of described the second triode Q2.It will be appreciated by those skilled in the art that, under the mobile terminal-opening state, the power vd D of portable terminal to 2 chargings of described the second capacitor C, equates VC=VDD until described the second capacitor C 2 voltages are elevated to the magnitude of voltage of portable terminal power supply output through described the second diode D2.After the portable terminal power down, capacitor C 1 is discharged over the ground through described the 3rd resistance R 3 and the 4th resistance R 4, and final C1 voltage is reduced to 0V.It will be appreciated by those skilled in the art that, as the magnitude of voltage VC of described the second capacitor C 2 during greater than the conducting voltage VBE2 of described the second triode Q2, described the second triode Q2 just can keep conducting, this moment as connection battery, described the first triode Q1 or the first metal-oxide-semiconductor conducting just can realize described starting-up signal port ground connection; When described the second capacitor C 2 the magnitude of voltage VC elapsed time, T dropped to VC=VBE2 the time, described the second triode Q2 is no longer conducting, this moment, no matter whether battery connected, and all can't realize Auto Power On by the conducting of described the first triode Q1 or the first metal-oxide-semiconductor.So just realized, when power down time of portable terminal during less than T, but the function of Auto Power On, solved the user be collided, fall, twist, jolt at portable terminal or shake after need the manually technical problem of start.
Described the second diode D2 also can replace with described the second metal-oxide-semiconductor, and its grid is connected with described the 3rd resistance R 3 and the 4th resistance R 4; Its source electrode is connected with the collector electrode of described the first diode D1 or the first metal-oxide-semiconductor; Its drain electrode connects described starting-up signal port.
Described portable terminal power supply can be VDD18 or VDD28.
It will be appreciated by those skilled in the art that, described ON time T changes along with the parameter of described electric power output voltage VDD and the second capacitor C 2, the 3rd resistance R 3 and the 4th resistance R 4, when the resistance of the resistance of the appearance value of described the second capacitor C 2, the 3rd resistance R 3 or the 4th resistance R 4 was larger, described ON time T was larger.Here adopt the second capacitor C 2 of 2.2UF; 15 kilo-ohms the 3rd resistance R 3 and 200 kilo-ohms the 4th resistance R 4; Described the second diode D2 adopts voltage stabilizing didoe.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a start control circuit comprises the starting-up signal port that low level triggers, and it is characterized in that: also comprise the pulse generating circuit for output pulse signal when all the other batteries are connected; And the switching circuit that when receiving described pulse signal, keeps conducting, two ports of described switching circuit are respectively at be connected another port ground connection of described switching circuit with described pulse generating circuit with described starting-up signal port.
2. start control circuit as claimed in claim 1 is characterized in that: also comprise the delay switching circuit with ON time; Two ports of described switching circuit are respectively at be connected another port ground connection of described switching circuit with an end and the described pulse generating circuit of described delay switching circuit; The other two ends of described delay switching circuit connect respectively described starting-up signal port and portable terminal power supply.
3. to remove 1 or 2 described start control circuits such as right, it is characterized in that: described switching circuit be conducting voltage (VBE1) value less than NPN type first triode (Q1) of described pulse signal voltage value, its base stage is connected with described pulse generating circuit; Its source ground; Its collector electrode connects described starting-up signal port.
4. start control circuit as claimed in claim 3, it is characterized in that: described pulse generating circuit comprises the first electric capacity (C1), the first diode (D1), the first resistance (R1) and the second resistance (R2); The positive pole of described the first electric capacity (C1) is used for being connected with battery and negative pole is connected with an end of the first resistance (R1); The other end of described the first resistance (R1) is connected with base stage or the transistorized grid of described the first triode (Q1); The base stage of described the second resistance (R2) end and described the first triode (Q1) or transistorized grid is connected and other end ground connection; Described the first diode (D1) plus earth and negative pole are connected with the negative pole of described the first electric capacity (C1).
5. start control circuit as claimed in claim 4, it is characterized in that: described delay switching circuit comprises that the second electric capacity (C2), the second diode (D2), the 3rd resistance (R3), the 4th resistance (R4) and turn-on voltage (VBE2) are less than second triode (Q2) of the electric power output voltage value (VDD) of portable terminal; The source electrode of described the second triode (Q2) is connected with the collector circuit of described the first diode (D1); The collector electrode of described the second triode (Q2) connects described starting-up signal port; The anodal power supply of portable terminal and the end that negative pole connects described the 3rd resistance (R3) of connecting of described the second diode (D2); The other end of described the 3rd resistance (R3) connects the base stage of described the second triode (Q2); Described the second electric capacity (C2) end ground connection and the other end connect the negative pole of described the second diode (D2); Described the 4th resistance (R4) end ground connection and the other end connect the base stage of described the second triode (Q2).
6. start control circuit as claimed in claim 5 is characterized in that: described the first diode (D1) is voltage stabilizing didoe with described the second diode (D2).
7. start control circuit as claimed in claim 6, it is characterized in that: described the first electric capacity and the second electric capacity are 2.2 microfarads; Described the first resistance is 2.2 kilo-ohms; Described the second resistance is 100 kilo-ohms; Described three resistance are 15 kilo-ohms; Described the 4th resistance is 200 kilo-ohms.
8. to remove 1 or 2 described start control circuits such as right, it is characterized in that: described switching circuit be conducting voltage (VBE1) value less than the first metal-oxide-semiconductor of described pulse signal voltage value, its grid is connected with described pulse generating circuit; Its source ground; And its drain electrode connects described starting-up signal port.
9. start control circuit as claimed in claim 4, it is characterized in that: described delay switching circuit comprises that the second electric capacity (C2), the second diode (D2), the 3rd resistance (R3), the 4th resistance (R4) and turn-on voltage (VBE2) are less than the second metal-oxide-semiconductor of the electric power output voltage value (VDD) of portable terminal; The source electrode of described the second metal-oxide-semiconductor is connected with the drain circuit of described the first diode (D1); The drain electrode of described the second metal-oxide-semiconductor connects described starting-up signal port; The anodal power supply of portable terminal and the end that negative pole connects described the 3rd resistance (R3) of connecting of described the second diode (D2); The other end of described the 3rd resistance (R3) connects the grid of described the second metal-oxide-semiconductor; Described the second electric capacity (C2) end ground connection and the other end connect the negative pole of described the second diode (D2); Described the 4th resistance (R4) end ground connection and the other end connect the grid of described the second metal-oxide-semiconductor.
10. start control circuit as claimed in claim 7, it is characterized in that: described portable terminal power supply is VDD18 or VDD28.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436885.0A CN102931964B (en) | 2012-11-06 | 2012-11-06 | Start control circuit |
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|---|---|---|---|
| CN201210436885.0A CN102931964B (en) | 2012-11-06 | 2012-11-06 | Start control circuit |
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| CN102931964A true CN102931964A (en) | 2013-02-13 |
| CN102931964B CN102931964B (en) | 2016-10-05 |
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| CN201210436885.0A Active CN102931964B (en) | 2012-11-06 | 2012-11-06 | Start control circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330984B (en) * | 2013-09-25 | 2016-10-05 | 广州三星通信技术研究有限公司 | Prevent portable terminal and the method thereof of Auto Power On |
| CN113467333A (en) * | 2021-07-28 | 2021-10-01 | 深圳市广和通无线股份有限公司 | Startup control circuit and startup control method |
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| CN1782954A (en) * | 2004-11-30 | 2006-06-07 | 鸿富锦精密工业（深圳）有限公司 | Computer system with re-starting control circuit |
| CN101025636A (en) * | 2006-02-24 | 2007-08-29 | 李上灿 | Transformer coupled purallel switch type voltage-stabilized source |
| CN101388986A (en) * | 2008-09-28 | 2009-03-18 | 深圳创维－Rgb电子有限公司 | Power-on pulse eliminating circuit |
| CN101626227A (en) * | 2009-07-31 | 2010-01-13 | Tcl通力电子（惠州）有限公司 | Circuit for forced shutdown |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1782954A (en) * | 2004-11-30 | 2006-06-07 | 鸿富锦精密工业（深圳）有限公司 | Computer system with re-starting control circuit |
| CN101025636A (en) * | 2006-02-24 | 2007-08-29 | 李上灿 | Transformer coupled purallel switch type voltage-stabilized source |
| CN101388986A (en) * | 2008-09-28 | 2009-03-18 | 深圳创维－Rgb电子有限公司 | Power-on pulse eliminating circuit |
| CN101626227A (en) * | 2009-07-31 | 2010-01-13 | Tcl通力电子（惠州）有限公司 | Circuit for forced shutdown |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104330984B (en) * | 2013-09-25 | 2016-10-05 | 广州三星通信技术研究有限公司 | Prevent portable terminal and the method thereof of Auto Power On |
| CN113467333A (en) * | 2021-07-28 | 2021-10-01 | 深圳市广和通无线股份有限公司 | Startup control circuit and startup control method |
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| Publication number | Publication date |
|---|---|
| CN102931964B (en) | 2016-10-05 |
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