CN205407576U - Power delays start control device and mains operated circuit - Google Patents
Power delays start control device and mains operated circuit Download PDFInfo
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- CN205407576U CN205407576U CN201620125238.1U CN201620125238U CN205407576U CN 205407576 U CN205407576 U CN 205407576U CN 201620125238 U CN201620125238 U CN 201620125238U CN 205407576 U CN205407576 U CN 205407576U
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- 230000006378 damage Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000005540 biological transmission Effects 0.000 description 1
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Abstract
The utility model discloses a power delays the start control device, including electric capacity battery charging unit and field effect transistor to power input end and power output end have, electric capacity battery charging unit includes first electric capacity, first resistance and second resistance, anodal and the power input end of first electric capacity are connected, and the negative pole of first electric capacity is connected with the first end of first resistance, not the second termination ground of first resistance, a second resistance and a capacitance parallel connection, field effect transistor's the input utmost point and the anodal of first electric capacity are connected, and field effect transistor's control electrode is connected with the negative pole of first electric capacity, and field effect transistor's output stage and power output end are connected. The utility model discloses can realize that slow rising the that offers load circuit's voltage in the middle of the electric process starts, reduce the risk that components and parts or chip on the load circuit damaged, protection load circuit. And simultaneously, the utility model also provides a mains operated circuit can provide safe, suitable operating voltage for the device on the load circuit.
Description
Technical field
This utility model relates to power circuit technical field, is specifically related to a kind of power supply delay startup and controls device and power-supplying circuit.
Background technology
In circuit board systems, the function of power supply is available to the burning voltage needed for the load circuit on circuit board.When actually used need circuit is carried out repeatedly when powering on, compare the running voltage amplitude of circuit due to the amplitude of the input voltage of power supply and have certain difference, and in the middle of actual job, working environment is likely very dry makes an uproar, the plug receptacle of power supply itself is likely to and can gather substantial amounts of electrostatic, therefore powers on and has a very big voltge surge load circuit.Therefore, the instantaneous voltage that powers on of the front end of circuit may exceed the components and parts of load circuit or the voltage threshold of chip, components and parts causes certain damage or punctures chip.Seriously may result in circuit board Important Components to burn, short circuit, even on fire, quick-fried work, causes very big hidden danger to components and parts inside.
Utility model content
The purpose of this utility model is; a kind of power supply delay startup is provided to control device and power-supplying circuit; it is capable of in the middle of power up being supplied to the startup that slowly rises of the voltage of load circuit, reduces the risk of the components and parts on load circuit or wafer damage, protect load circuit.
For solving above technical problem, this utility model embodiment provides a kind of power supply delay startup to control device, including electric capacity charhing unit and field effect transistor；Described power supply delay startup controls device and has power input and power output end；
Described electric capacity charhing unit includes the first electric capacity, the first resistance and the second resistance；The positive pole of described first electric capacity is connected with described power input, and the negative pole of described first electric capacity is connected with the first end of described first resistance；Second end ground connection of described first resistance；Described second resistance and described first Capacitance parallel connection；
The input pole of described field effect transistor is connected with the positive pole of described first electric capacity, and the pole that controls of described field effect transistor is connected with the negative pole of described first electric capacity, and the output stage of described field effect transistor is connected with described power output end.
As it is highly preferred that described power supply delay startup controls device also includes connection unit；Second end of described first resistance is by described connection unit ground connection；Wherein, described connection unit have the first link being connected with the second end of described first resistance, second link with ground connection and for control break-make between described first link and described second link connection control end.
As it is highly preferred that described connection unit includes the 3rd resistance, the 4th resistance and audion；The base stage of described audion is connected to by described 3rd resistance and described connection controls end；The emitter stage of described audion is connected to described second link；The colelctor electrode of described audion is connected to described first link；The described control end that connects is connected to described second link by described 4th resistance.
As it is highly preferred that described power supply delay startup controls device also includes on and off switch；First end of described on and off switch is connected with described power input, and the second end of described on and off switch is connected with the positive pole of described first electric capacity.
As it is highly preferred that described power supply delay startup controls device also includes electric fuse；Second end of described on and off switch is connected especially by the positive pole of described electric fuse with described first electric capacity.
As it is highly preferred that described power supply delay startup controls device also includes the second electric capacity；The positive pole of described second electric capacity is connected with the positive pole of described first electric capacity, the minus earth of described second electric capacity.
As it is highly preferred that described power supply delay startup controls device also includes the first diode；The negative pole of described first diode is connected to the positive pole of described first electric capacity；The plus earth of described first diode.
As it is highly preferred that described power supply delay startup controls device also includes the second diode；The negative pole of described second diode is connected to the output stage of described field effect transistor, the plus earth of described second diode.
As it is highly preferred that described power supply delay startup controls device also includes the 5th resistance and LED；Described 5th resistance and described LED are connected between described power output end and ground.
Meanwhile, this utility model also provides for a kind of power-supplying circuit, controls device and power conversion chip including above-mentioned power supply delay startup；Described power conversion chip has power end and at least one feeder ear；The power output end that the power end of described power conversion chip controls device with described power supply delay startup is connected.
Compared to prior art, the beneficial effects of the utility model are in that: this utility model provides a kind of power supply delay startup to control device, including electric capacity charhing unit and field effect transistor；When powering on by the first electric capacity charging in electric capacity charhing unit is arranged one period of buffer time so that when the voltage at the two ends of described first electric capacity reaches the threshold voltage of field effect transistor, the voltage of power input just can be transitioned into power output end.Therefore; circuit will not be powered to load circuit after powering at once, but just can power to load circuit after one period of buffer time, it is to avoid the too high voltages the powered on impact to load circuit; reduce the risk of the components and parts on load circuit or wafer damage, protect load circuit.Meanwhile, this utility model additionally provides a kind of power-supplying circuit controlling device based on above-mentioned power supply delay startup, it is possible to provide safety, suitable running voltage for the device on load circuit.
Accompanying drawing explanation
Fig. 1 is the circuit diagram that the power supply delay startup that this utility model embodiment provides controls device；
Fig. 2 is the circuit diagram that the power supply delay startup that this utility model variant embodiment provides controls device.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Referring to Fig. 1, it is the circuit diagram that the power supply delay startup that this utility model embodiment provides controls device.
Described power supply delay startup controls device and includes electric capacity charhing unit 1 and field effect transistor M1；Described power supply delay startup controls device and has power input VIN and power output end VOUT；Wherein, described power input VIN is for being connected with DC source DC, and described power output end VOUT is for being connected with the feeder ear of load.Described load can be electronic device or power conversion chip.
Described electric capacity charhing unit 1 includes the first electric capacity C1, the first resistance R1 and the second resistance R2；The positive pole of described first electric capacity C1 is connected with described power input VIN, and the negative pole of described first electric capacity C1 is connected with first end of described first resistance R1；The second end ground connection of described first resistance R1；Described second resistance R2 is in parallel with described first electric capacity C1.
The input pole of described field effect transistor M1 is connected with the positive pole of described first electric capacity C1, and the pole that controls of described field effect transistor M1 is connected with the negative pole of described first electric capacity C1, and the output stage of described field effect transistor M1 is connected with described power output end VOUT.
In the present embodiment, described field effect transistor M1 adopts P-channel depletion field effect transistor；The source electrode of described input extremely field effect transistor M1, the grid of described control extremely field effect transistor M1, the drain electrode of described output extremely field effect transistor M1.
As it is highly preferred that described power supply delay startup controls device also includes on and off switch SW1；First end of described on and off switch SW1 is connected with described power input VIN, and second end of described on and off switch SW1 is connected with the positive pole of described first electric capacity C1.Control whether to power on by described on and off switch SW1.
As it is highly preferred that described power supply delay startup controls device also includes electric fuse F1；Second end of described on and off switch SW1 is connected especially by the positive pole of described electric fuse F1 with described first electric capacity C1.In the present embodiment, the blow-out current value of described electric fuse F1 is 15A.For the excessive or short circuit at the electric current that powers on or other exception, described electric fuse F1 causes that operating current fuses when exceeding normal value automatically, play the effect of protection circuit, be easily maintained simultaneously.
As it is highly preferred that described power supply delay startup controls device also includes the second electric capacity C2；The positive pole of described second electric capacity C2 is connected with the positive pole of described first electric capacity C1, the minus earth of described second electric capacity C2.Described second electric capacity C2 is for filtering the high frequency value of piezoelectric voltage.
As it is highly preferred that described power supply delay startup controls device also includes the first diode D1；The negative pole of described first diode D1 is connected to the positive pole of described first electric capacity C1；The plus earth of described first diode D1.By arranging the first diode D1 of Opposite direction connection so that protect circuit when reverse power connection, reduce maintenance workload.
As it is highly preferred that described power supply delay startup controls device also includes the second diode D2；The negative pole of described second diode D2 is connected to the output stage of described field effect transistor M1, the plus earth of described second diode D2.By arranging the second diode D1 of Opposite direction connection so that protect circuit when reverse power connection, reduce maintenance workload.
As it is highly preferred that described power supply delay startup controls device also includes the 5th resistance R5 and LED；Described 5th resistance R5 and described LED are connected between described power output end VOUT and ground.For the ease of field adjustable, the success or not that circuit board powers on have employed LED and indicates.Described 5th resistance R5 be used for current limliting, LED can circuit successfully power on and voltage value be in acceptability limit normally shinny.
The operation principle of the present embodiment is as follows: when described on and off switch SW1 closes, and DC source DC starts described first electric capacity C1 charging, and the voltage at described first electric capacity C1 two ends begins to ramp up from 0, and now the voltage of described power output end VOUT is 0；When the voltage at described first electric capacity C1 two ends reaches the threshold voltage of described field effect transistor M1, described field effect transistor turns on, making the voltage-transition of described power input VIN to described power output end VOUT, the voltage of described power output end VOUT is climbed to the voltage approximating described DC source DC.When described on and off switch SW1 disconnects, described first electric capacity C1 to described second resistance R2 electric discharge, can prepare for starting next time.
Therefore; circuit will not be powered to load circuit after powering at once, but just can power to load circuit after one period of buffer time, it is to avoid the too high voltages the powered on impact to load circuit; reduce the risk of the components and parts on load circuit or wafer damage, protect load circuit.
The present embodiment can also deform further.As in figure 2 it is shown, the power supply delay startup that it is the offer of this utility model variant embodiment controls the circuit diagram of device.
Second end of described second resistance R2 is by connecting unit 2 ground connection.Described connection unit 2 has the first link that the second end with described first resistance R1 is connected, second link with ground connection and the connection for controlling break-make between described first link and described second link and controls end CTRL.
Specifically, described connection unit 2 includes the 3rd resistance R3, the 4th resistance R4 and audion Q1；The base stage of described audion Q1 is connected to by described 3rd resistance R3 and described connection controls end CTRL；The emitter stage of described audion Q1 is connected to described second link；The colelctor electrode of described audion Q1 is connected to described first link；The described control end CTRL that connects is connected to described second link by described 4th resistance R4.
When described connection control end CTRL receives high level signal, described audion Q1 turns on so that turning between described first link and the second link, namely second end of described second resistance R2 is ground connection, it is allowed to described first electric capacity C1 charging.When described connect control end CTRL receive low level signal time, described audion Q1 ends so that described first link and the second link separated, and namely second end of described second resistance R2 is earth-free, forbids described first electric capacity C1 is charged.
When described connection control end CTRL receives high level signal, voltage is supplied to the 3rd resistance R3 and the four resistance R4, it is supplied to the voltage of the 4th resistance R4 and can ensure that between the base stage on audion Q1 and emitter stage, have enough conducting voltage to remove conducting emitter junction, and be supplied to the voltage of the 3rd resistance R3 for providing when the base stage of turn-on transistor Q1 enough electric currents to flow through the first resistance R1.
Embodiment after deformation can by control described connection unit 2 control whether allow to first electric capacity C1 charge, only it is connected with DC source DC at described power input VIN, and when being conducting between the first link and second link of described connection unit 2, described first electric capacity C1 just can charge, the power output end VOUT of the voltage ability transition of power input VIN.Therefore, controllability and the safety of whole circuit are considerably increased.
In actual applications, the described signal controlling end CTRL that connects is sent by control unit.Described control unit, when detecting that DC source DC inputs, makes conducting between the first link and second link of described connection unit 2, thus starting described first electric capacity C1 charging to described connection control end CTRL transmission high level signal.
Meanwhile, this utility model embodiment also provides for a kind of power-supplying circuit, and the power supply delay startup including above-mentioned first embodiment or the second embodiment controls device and power conversion chip；Described power conversion chip has power end and at least one feeder ear；The power output end VOUT that the power end of described power conversion chip controls device with described power supply delay startup is connected.
A range of input voltage can be converted to the voltage available signal of correspondence by power conversion chip, is wired to the power end with module, is available for each module and powers on and work.It is safe owing to described power supply delay startup control device is supplied to the voltage of described power conversion chip, after chip converts, also can produce the voltage of safety range, it is to avoid the device on circuit board is caused the destruction of too high voltages.
Compared to prior art, the beneficial effects of the utility model are in that: this utility model provides a kind of power supply delay startup to control device, including electric capacity charhing unit and field effect transistor；When powering on by the first electric capacity charging in electric capacity charhing unit is arranged one period of buffer time so that when the voltage at the two ends of described first electric capacity reaches the threshold voltage of field effect transistor, the voltage of power input just can be transitioned into power output end.Therefore; circuit will not be powered to load circuit after powering at once, but just can power to load circuit after one period of buffer time, it is to avoid the too high voltages the powered on impact to load circuit; reduce the risk of the components and parts on load circuit or wafer damage, protect load circuit.Meanwhile, this utility model additionally provides a kind of power-supplying circuit controlling device based on above-mentioned power supply delay startup, it is possible to provide safety, suitable running voltage for the device on load circuit.
The above is preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, under the premise without departing from this utility model principle; can also making some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.
Claims (10)
1. a power supply delay startup controls device, it is characterised in that described power supply delay startup controls device and includes electric capacity charhing unit and field effect transistor；Described power supply delay startup controls device and has power input and power output end；
Described electric capacity charhing unit includes the first electric capacity, the first resistance and the second resistance；The positive pole of described first electric capacity is connected with described power input, and the negative pole of described first electric capacity is connected with the first end of described first resistance；Second end ground connection of described first resistance；Described second resistance and described first Capacitance parallel connection；
The input pole of described field effect transistor is connected with the positive pole of described first electric capacity, and the pole that controls of described field effect transistor is connected with the negative pole of described first electric capacity, and the output stage of described field effect transistor is connected with described power output end.
2. power supply delay startup as claimed in claim 1 controls device, it is characterised in that described power supply delay startup controls device and also includes connecting unit；Second end of described first resistance is by described connection unit ground connection；Wherein, described connection unit have the first link being connected with the second end of described first resistance, second link with ground connection and for control break-make between described first link and described second link connection control end.
3. power supply delay startup as claimed in claim 2 controls device, it is characterised in that described connection unit includes the 3rd resistance, the 4th resistance and audion；The base stage of described audion is connected to by described 3rd resistance and described connection controls end；The emitter stage of described audion is connected to described second link；The colelctor electrode of described audion is connected to described first link；The described control end that connects is connected to described second link by described 4th resistance.
4. power supply delay startup as claimed in claim 1 controls device, it is characterised in that described power supply delay startup controls device and also includes on and off switch；First end of described on and off switch is connected with described power input, and the second end of described on and off switch is connected with the positive pole of described first electric capacity.
5. power supply delay startup as claimed in claim 4 controls device, it is characterised in that described power supply delay startup controls device and also includes electric fuse；Second end of described on and off switch is connected especially by the positive pole of described electric fuse with described first electric capacity.
6. power supply delay startup as claimed in claim 1 controls device, it is characterised in that described power supply delay startup controls device and also includes the second electric capacity；The positive pole of described second electric capacity is connected with the positive pole of described first electric capacity, the minus earth of described second electric capacity.
7. power supply delay startup as claimed in claim 1 controls device, it is characterised in that described power supply delay startup controls device and also includes the first diode；The negative pole of described first diode is connected to the positive pole of described first electric capacity；The plus earth of described first diode.
8. power supply delay startup as claimed in claim 1 controls device, it is characterised in that described power supply delay startup controls device and also includes the second diode；The negative pole of described second diode is connected to the output stage of described field effect transistor, the plus earth of described second diode.
9. the power supply delay startup as described in any one of claim 1～8 controls device, it is characterised in that described power supply delay startup controls device and also includes the 5th resistance and LED；Described 5th resistance and described LED are connected between described power output end and ground.
10. a power-supplying circuit, it is characterised in that include the power supply delay startup as described in any one of claim 1～9 and control device and power conversion chip；Described power conversion chip has power end and at least one feeder ear；The power output end that the power end of described power conversion chip controls device with described power supply delay startup is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620125238.1U CN205407576U (en) | 2016-02-17 | 2016-02-17 | Power delays start control device and mains operated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620125238.1U CN205407576U (en) | 2016-02-17 | 2016-02-17 | Power delays start control device and mains operated circuit |
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| CN205407576U true CN205407576U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620125238.1U Expired - Fee Related CN205407576U (en) | 2016-02-17 | 2016-02-17 | Power delays start control device and mains operated circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109075593A (en) * | 2017-12-20 | 2018-12-21 | 深圳市大疆创新科技有限公司 | Power on relaxed starter, battery component, unmanned plane and method |
| CN109768697A (en) * | 2019-01-28 | 2019-05-17 | 昆山龙腾光电有限公司 | Protect the suppressing method of circuit, switch power supply system and surge current |
| CN111384847A (en) * | 2020-04-22 | 2020-07-07 | 京东方科技集团股份有限公司 | Power-on protection circuit of direct-current power supply, method for driving load circuit and electronic equipment |
| CN112310937A (en) * | 2020-10-16 | 2021-02-02 | 浪潮电子信息产业股份有限公司 | Slow start protection circuit and circuit protection integrated chip |
| WO2022267988A1 (en) * | 2021-06-21 | 2022-12-29 | 深圳市道通智能航空技术股份有限公司 | Charging control circuit, charging control system and charger |
-
2016
- 2016-02-17 CN CN201620125238.1U patent/CN205407576U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109075593A (en) * | 2017-12-20 | 2018-12-21 | 深圳市大疆创新科技有限公司 | Power on relaxed starter, battery component, unmanned plane and method |
| WO2019119291A1 (en) * | 2017-12-20 | 2019-06-27 | 深圳市大疆创新科技有限公司 | Power-on slow start device, battery assembly, unmanned aerial vehicle and power-on slow start method |
| CN109075593B (en) * | 2017-12-20 | 2022-07-12 | 深圳市大疆创新科技有限公司 | Power-on slow start device, battery assembly, unmanned aerial vehicle and method |
| CN109768697A (en) * | 2019-01-28 | 2019-05-17 | 昆山龙腾光电有限公司 | Protect the suppressing method of circuit, switch power supply system and surge current |
| CN111384847A (en) * | 2020-04-22 | 2020-07-07 | 京东方科技集团股份有限公司 | Power-on protection circuit of direct-current power supply, method for driving load circuit and electronic equipment |
| CN111384847B (en) * | 2020-04-22 | 2021-04-16 | 京东方科技集团股份有限公司 | Power-on protection circuit of direct-current power supply, method for driving load circuit and electronic equipment |
| CN112310937A (en) * | 2020-10-16 | 2021-02-02 | 浪潮电子信息产业股份有限公司 | Slow start protection circuit and circuit protection integrated chip |
| WO2022267988A1 (en) * | 2021-06-21 | 2022-12-29 | 深圳市道通智能航空技术股份有限公司 | Charging control circuit, charging control system and charger |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 |
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| CF01 | Termination of patent right due to non-payment of annual fee |