CN203332048U - Delay power supply circuit for chip - Google Patents
Delay power supply circuit for chip Download PDFInfo
- Publication number
- CN203332048U CN203332048U CN2013203264500U CN201320326450U CN203332048U CN 203332048 U CN203332048 U CN 203332048U CN 2013203264500 U CN2013203264500 U CN 2013203264500U CN 201320326450 U CN201320326450 U CN 201320326450U CN 203332048 U CN203332048 U CN 203332048U
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- China
- Prior art keywords
- chip
- diode
- silicon control
- power supply
- time delay
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a delay power supply circuit for a chip. The delay power supply circuit for the chip comprises the chip (U1) and a storage battery. The delay power supply circuit for the chip is characterized in that the positive end of the storage battery is connected with the positive electrode of a first diode (D1) after being connected with a normally-closed switch of a relay (J1) in series, the negative electrode of the first diode (D1) is connected with the anode of a thyristor (Q1), the anode of the thyristor (Q1) is further connected with an energy storage unit, the control electrode of the thyristor (Q1) is connected with a signal source, the cathode of the thyristor (Q1) is connected with the input terminal of a three-terminal regulator, the grounding terminal of the three-terminal regulator is grounded, the output terminal of the three-terminal regulator is connected with the power input end of the chip (U1), the power control end of the chip (U1) is connected with a base electrode of a first triode (T1), the emitting electrode of the first triode (T1) is grounded, and a collector is connected with the positive end of the storage battery after being connected with a coil of the relay (J1) in series. The delay power supply circuit for the chip is simple in structure and reliable in operation, can continuously provide electricity for the chip for a certain time after a power source is disconnected, and is quite wide in field of application.
Description
Technical field
The utility model relates to a kind of chip power supply circuit, is specifically related to a kind of chip time delay feed circuit.
Background technology
Along with integrated, the intelligentized development of electronics and information industry, the application of electronic chip is day by day extensive.MCU will work, must provide stable, the power supply responded fast, the mode adopted at present has direct employing Switching Power Supply power supply, adopt powered battery, employing and circuit connecting mode power supply etc., in actual application, many occasions need work on a period of time after the MCU outage, requiring power supply can be MCU time delay power supply, to guarantee that all output commands of MCU can be carried out effectively reliably, after all instructions are performed, PTO Power Take Off reliably again, to reach real energy-conservation effect, simultaneously, this circuit can also be when system startup next time, effectively to each circuit unit, provide stable power supply.
The shortcoming of prior art is: a lot of power circuits can not be MCU time delay power supply after the MCU cut-offing instruction sends, and guarantee that power supply can thoroughly close, and more can not guarantee provides stabilized power source for MCU and circuit startup next time.
The utility model content
The utility model is for the problem of prior art, a kind of chip power supply circuit with delay function is proposed, can be after the MCU cut-offing instruction sends be MCU time delay power supply, and guarantee that power supply can thoroughly close, can guarantee provides stabilized power source for MCU and circuit start next time simultaneously.
The utility model concrete scheme is as follows:
A kind of chip time delay feed circuit, comprise chip (U1) and storage battery, its key is: wherein after storage battery anode series relay (J1) normally closed switch, connect the first diode (D1) positive pole, the first diode (D1) negative pole connects silicon control (Q1) anode, this silicon control (Q1) anode also is connected with energy-storage units, described silicon control (Q1) is controlled the utmost point and is connect signal source, silicon control (Q1) negative electrode connects the three terminal regulator input end, three terminal regulator ground terminal ground connection, the three terminal regulator output described chip of termination (U1) power input;
Described chip (U1) power control terminal connects the first aerotron (T1) basis set, and the first aerotron (T1) grounded emitter connects described storage battery anode after the described relay of collecting electrode string (J1) coil.
Silicon control (Q1) is used in conjunction with relay (J1) normally closed switch, again in conjunction with energy-storage units, when normally closed switch disconnects, energy-storage units is powered to main control chip through silicon control (Q1) time delay, guarantee that main control chip can be in the delay working all out codes of completion system during this period of time, after normally closed switch jumps back to closure state, silicon control (Q1) is controlled the utmost point and is discharged fully, realizes opening circuit between chip (U1) and storage battery.And the pressure reduction that silicon control (Q1) two ends keep has guaranteed, as long as silicon control (Q1) is controlled the utmost point one, high level signal is arranged, chip (U1) can obtain the storage battery electric energy again at any time.
For better realizing the utility model, the first diode (D1) positive pole connects the 3rd diode (D3) negative pole, ground connection after the 3rd diode (D3) anodal string the first electric capacity (C1), the signal control source connects described silicon control (Q1) the control utmost point after connecing the 3rd diode (D3) positive pole.
It is unstable and can't trigger the generation of silicon control (Q1) situation that the arranging of the first electric capacity (C1) can overcome signal source, arranging in the time of can allowing signal source stop transmitted signal of the 3rd diode (D3), the first electric capacity (C1) can complete electric discharge, guarantees silicon control (Q1) reliable turn-off.
Described energy-storage units is chemical capacitor, and this chemical capacitor positive pole connects silicon control (Q1) anode, negative earth.Described energy-storage units can be also an energy storage chip.
For better realizing the utility model, ground connection after three terminal regulator mouth string the second electric capacity (C2), can allow the three terminal regulator out-put supply more stable.
The output signal that described signal source is described chip (U1) extinguish end.
The utility model is simple in structure, reliable, can be after the MCU cut-offing instruction sends be MCU time delay power supply, and guarantees that power supply can thoroughly close, and can guarantee provides stabilized power source for MCU and circuit start next time simultaneously.Application is very extensive.
The accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model.
Fig. 2 is the utility model power supply example structure block diagram.
The specific embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
A kind of chip time delay feed circuit, comprise chip U1 and storage battery, wherein after storage battery anode series relay J1 normally closed switch, connect the first diode D1 positive pole, the first diode D1 negative pole connects silicon control Q1 anode, this silicon control Q1 anode also is connected with energy-storage units, and described silicon control Q1 controls the utmost point and connects signal source, and silicon control Q1 negative electrode connects the three terminal regulator input end, three terminal regulator ground terminal ground connection, the described chip U1 of three terminal regulator output termination power input; Chip U1 power control terminal connects the first aerotron T1 basis set, and the first aerotron T1 grounded emitter connects described storage battery anode after described relay J 1 coil of collecting electrode string.
Described silicon control Q1 controls the rear ground connection of utmost point string the first capacitor C 1, and this silicon control Q1 controls the utmost point and also connects the 3rd diode D3 positive pole, and the 3rd diode D3 negative pole connects described the first diode D1 positive pole.
Described energy-storage units is chemical capacitor, and this chemical capacitor positive pole connects silicon control Q1 anode, negative earth.Described energy-storage units can be also an energy storage chip.
The rear ground connection of three terminal regulator mouth string the second capacitor C 2.
The output signal of described chip U1 extinguish end is signal source.
The utility model provides power supply for the automobile burglar circuit for the security chip.
Signal source contact ignition circuit, when starting vehicle, firing circuit provides signal source to make silicon control Q1 conducting, battery power passes through relay J 1 normally closed switch, the first diode D1, silicon control Q1 to the three terminal regulator input end, output to security chip power end after three terminal regulator step-down, voltage stabilizing, the rear ground connection of three terminal regulator mouth serial connection capacitor C 2, to the further filtering of out-put supply;
System Working Principle is as follows:
When the security chip receives the spurious signal that the remote signaling projector sends or does not receive signal, security chip U1 extinguish end output signal point of cutoff ignition circuit stops vehicle launch, stop silicon control Q1 is controlled to utmost point power supply, the electric energy of the first capacitor C 1 storage is after the 3rd diode D3 electric discharge, silicon control Q1 controls the time delay of utmost point level and reduces, silicon control Q1 cut-off; Security chip power control end is exported high level simultaneously, aerotron T1 conducting, relay J 1 coil obtains electric normally closed switch and disconnects, now energy-storage units time delay electric discharge, arrive the three terminal regulator input end by silicon control Q1, arrive the chip power end and continue as chip power supply after the three terminal regulator voltage stabilizing, energy-storage units can be electric capacity, the energy-storage travelling wave tubes such as storage battery; Simultaneously, the security chip sends alerting signal, starts warning; Complete when the release of energy-storage module electric energy, security chip dead electricity quits work, relay normally closed switch closure.
After security chip dead electricity quits work, its power control terminal can't be the first aerotron T1 base stage power supply again, the first aerotron T1 cut-off, relay J 1 normally closed switch return closure, but the first capacitor C 1 and energy-storage units discharge off all now, silicon control Q1 again can't conducting, and storage battery can't be directly the power supply of chip U1 power input by three ends again.Until firing circuit is effectively connected again, the silicon control Q1 control utmost point obtains electric, and system could be activated again.
Claims (6)
1. chip time delay feed circuit, comprise chip (U1) and storage battery, it is characterized in that: wherein after storage battery anode series relay (J1) normally closed switch, connect the first diode (D1) positive pole, the first diode (D1) negative pole connects silicon control (Q1) anode, this silicon control (Q1) anode also is connected with energy-storage units, described silicon control (Q1) is controlled the utmost point and is connect signal source, silicon control (Q1) negative electrode connects the three terminal regulator input end, three terminal regulator ground terminal ground connection, the three terminal regulator output described chip of termination (U1) power input;
Described chip (U1) power control terminal connects the first aerotron (T1) basis set, and the first aerotron (T1) grounded emitter connects described storage battery anode after the described relay of collecting electrode string (J1) coil.
2. chip time delay feed circuit according to claim 1, it is characterized in that: described silicon control (Q1) is controlled the rear ground connection of utmost point string the first electric capacity (C1), this silicon control (Q1) is controlled the utmost point and is also connect the 3rd diode (D3) positive pole, and the 3rd diode (D3) negative pole connects described the first diode (D1) positive pole.
3. according to the described chip time delay of claim 1 or 2 feed circuit, it is characterized in that: described energy-storage units is chemical capacitor, and this chemical capacitor positive pole connects silicon control (Q1) anode, negative earth.
4. according to the described chip time delay of claim 1 or 2 feed circuit, it is characterized in that: described energy-storage units is the energy storage chip.
5. chip time delay feed circuit according to claim 1, is characterized in that: ground connection after described three terminal regulator mouth string the second electric capacity (C2).
6. chip time delay feed circuit according to claim 1, is characterized in that: the output signal that described signal source is described chip (U1) extinguish end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203264500U CN203332048U (en) | 2013-06-06 | 2013-06-06 | Delay power supply circuit for chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203264500U CN203332048U (en) | 2013-06-06 | 2013-06-06 | Delay power supply circuit for chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203332048U true CN203332048U (en) | 2013-12-11 |
Family
ID=49700744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203264500U Expired - Fee Related CN203332048U (en) | 2013-06-06 | 2013-06-06 | Delay power supply circuit for chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203332048U (en) |
-
2013
- 2013-06-06 CN CN2013203264500U patent/CN203332048U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20150606 |
|
| EXPY | Termination of patent right or utility model |