CN101546178A - Timing control device - Google Patents
Timing control device Download PDFInfo
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- CN101546178A CN101546178A CN 200810087679 CN200810087679A CN101546178A CN 101546178 A CN101546178 A CN 101546178A CN 200810087679 CN200810087679 CN 200810087679 CN 200810087679 A CN200810087679 A CN 200810087679A CN 101546178 A CN101546178 A CN 101546178A
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- cycle controller
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Abstract
The invention provides a timing control device, which is used for controlling the starting/closing timing of a plurality of power supplies. The timing control device comprises a plurality of time delay circuits coupled to the power supplies respectively, a plurality of discharge circuits coupled to the time delay circuits respectively, and a plurality of switching circuits coupled to the discharge circuits respectively.
Description
Technical field
The relevant a kind of control device of the present invention, especially relevant a kind of time cycle controller that is used to control power initiation/close.
Background technology
Use many group voltage sources to become the electronic system design general tip, by the configuration of multiple voltage source, can allow the Core Feature in the system under low voltage, work, lower power consumption, then only keep indispensable part, for example outer interface and I/O in the system of giving as for high power supply.Though very power saving of this design, the open and close between many group voltage sources regularly must suitably be arranged, and supply/cut off the electronic system power supply in regular turn.
Be to use a microcontroller to control between many group voltage sources traditionally and open and close regularly, but microcontroller price height, and be unfavorable for reducing the whole cost of electronic system.Therefore, the utmost point need have the low device that can reach above-mentioned timing controlled purpose again of a kind of cost.
Summary of the invention
For realizing above-mentioned timing controlled purpose with low cost, the present invention proposes a kind of time cycle controller, wherein this time cycle controller is in order to controlling the startup/timeing closing of a plurality of power supplys, this device comprises: a plurality of delay circuits couple these power supplys respectively; A plurality of discharge circuits couple these delay circuits respectively; And a plurality of on-off circuits, couple these discharge circuits respectively.
Description of drawings
For above and other objects of the present invention, feature, advantage can be become apparent, below conjunction with figs. is elaborated to preferred embodiment of the present invention, wherein:
Figure 1 shows that a electronic system map with first embodiment of the invention time cycle controller.
Figure 2 shows that detailed circuit diagram according to the first embodiment of the invention time cycle controller.
Figure 3 shows that a electronic system map with second embodiment of the invention time cycle controller.
Figure 4 shows that a electronic system map with third embodiment of the invention time cycle controller.
Embodiment
Consult and Figure 1 shows that a electronic system map with first embodiment of the invention time cycle controller.In present embodiment, time cycle controller 101 is in order to supply or to cut off a plurality of voltage sources of a central processing unit 102 in regular turn.Yet in other embodiments, time cycle controller 101 also can be used for controlling a plurality of voltage sources of other electronic package.In addition, these a plurality of voltage sources can have identical voltage swing or different voltage swings.
According to present embodiment, electronic system 100 comprises a time cycle controller 101, central processing unit 102, first voltage source 104, second voltage source 106, tertiary voltage source 108 and a switching switch 110.Wherein change-over switch 110 is in order to switch general supply Vcc.101 of time cycle controller are in order to controlling first, second and tertiary voltage source 104,106 and 108 supply voltages and to cut off the timing of voltage, so as to provide or cut off a plurality of voltage sources to central processing unit 102 with a specific timing.
Consult an electronic system map that Figure 2 shows that according to the detailed circuit of first embodiment of the invention time cycle controller.In present embodiment, time cycle controller 101 comprises that three groups of resistance capacitance delay circuits are in order to connect first voltage source 104, second voltage source 106 and tertiary voltage source 108 respectively, provide different time delay by different resistance capacitance sizes, make first, second and tertiary voltage source 104,106 and 108 to provide voltage to central processing unit 102 according to a specific timing.
After passing through change-over switch 110 power-on (Vcc), power supply (Vcc) charges to capacitor C 1, C2 and C3 respectively by resistance R 1, R2 and R3, adjust the time that capacitor C 1, C2 and C3 are full of electricity by different resistance capacitance sizes, make three output points 120,122 and 124 of time cycle controller 101 arrive open the magnitude of voltage of first, second and tertiary voltage source 104,106 and 108 respectively in different time points, and provide central processing unit 102 required voltage by this three voltage source.In addition, after being connected of cut off the electricity supply by change-over switch 110 (Vcc) and electronic system 100, capacitor C 1, C2 and C3 discharge by resistance R 1, R2 and R3, make the voltage on three output points 120,122 and 124 descend, close first, second and tertiary voltage source 104,106 and 108 supply voltages and give central processing unit 102.According to present embodiment, because the characteristic of resistance capacitance delay circuit, causing opening and closing first, second and tertiary voltage source 104,106 is identical with 108 timing, that is the voltage source of unlatching earlier can be closed earlier, and then the voltage source of Kai Qiing is closed after then.
Consult and Figure 3 shows that a electronic system 200 figure with second embodiment of the invention time cycle controller.In order to reach different opening and closing voltage source timings, the difference of second embodiment and the first embodiment maximum is all to provide an extra discharge circuit to each group resistance capacitance delay circuit, switches the action that switch is controlled this discharge circuit with one simultaneously.For example form the discharge circuit that is constituted by resistance R 11 in addition, and this discharge circuit couples an action of switching switch S 1 this discharge circuit of control at the deferred telegram trackside of being formed by resistance R 1 and capacitor C 1.
According to second embodiment, when by change-over switch 110 with after being connected of power supply (Vcc) and electronic system 200, power supply (Vcc) conducting change-over switch S4, cause the grounded-grid of change-over switch S1, S2 and S3, therefore change-over switch S1, S2 and S3 keep closed condition, resistance R 11, R22 and R33 institute respectively formation discharge circuit and be failure to actuate.At this moment, power supply (Vcc) charges to capacitor C 1, C2 and C3 respectively by resistance R 1, R2 and R3, adjust the time that capacitor C 1, C2 and C3 are full of electricity by different resistance capacitance sizes, make first, second and tertiary voltage source 104,106 and 108 regularly provide central processing unit 102 voltages according to certain.And on the other hand, after change-over switch 110 is cut off the electricity supply being connected of (Vcc) and electronic system 100, the grounded-grid of change-over switch S4 and keep closed condition, power Vcc conducting this moment change-over switch S1, S2 and S3, the discharge circuit that makes resistance R 11, R22 and R33 institute constitute respectively begins to move.At this moment, capacitor C 1 is by resistance R 1 and R11, capacitor C 2 is discharged by resistance R 3 and R33 by resistance R 2 and R22 and capacitor C 3, makes first, second and tertiary voltage source 104,106 and 108 regularly stop to provide voltage to central processing unit 102 according to certain.In the present embodiment, resistance R 11, R22 and R33 constitute the extra discharge circuit of capacitor C 1, C2 and C3 respectively, therefore the timeing closing of first, second and tertiary voltage source 104,106 and 108, size that can be by changing resistance R 11, R22 and R33 is from new settings.
The resistance capacitance delay circuit to discharge and recharge equation as follows:
Charging V=Vcc (1-exp (T/ τ) τ=RC
Discharge V=Vcc (exp (T/ τ) τ=RC
Wherein V is the voltage on each output point 120,122 and 124.Vcc is the voltage source size.C is the capacitance of each capacitor C 1, C2 and C3.R for example for capacitor C 1, is the parallel connection value of resistance R 1 and R11 for connecting the resistance value of each capacitor C 1, C2 and C3, for capacitor C 2, is the parallel connection value of resistance R 2 and R22, for capacitor C 3, is the parallel connection value of resistance R 3 and R33.In this embodiment, be T=0.69 * R time delay * C that 0.5Vcc then opens if open the magnitude of voltage of the required input of the first/two/three voltage sources on each output point 120,122 and 124 of hypothesis, otherwise also be T=0.69 * R * C the time delay of closing.Wherein, can derive respectively and obtain by discharging and recharging formula the time delay of opening and closing.Switching switch circuit can be a MOS transistor, or can be any switch by the height control of Electric potentials.
Consult and Figure 4 shows that a electronic system map with third embodiment of the invention time cycle controller.Wherein electronic system 400 employed change-over switches 410 are pulse switch, and can add a trigger 412 this moment in switch 410 and 101 of time cycle controller, converts fixing high-low signal to so as to the pulse signal with change-over switch 410 outputs.
Though the present invention discloses as above with a preferred embodiment; yet it is not in order to limit the present invention; any person skilled in the art person; without departing from the spirit and scope of the present invention; when can making various changes that are equal to or replacement, so protection scope of the present invention is when looking accompanying being as the criterion that the application's claim scope defined.
Claims (25)
1. time cycle controller, wherein this time cycle controller is in order to controlling the startup/timeing closing of a plurality of power supplys, this device comprises:
A plurality of delay circuits couple these power supplys respectively;
A plurality of discharge circuits couple these delay circuits respectively; And
A plurality of on-off circuits couple these discharge circuits respectively.
2. time cycle controller according to claim 1 is characterized in that also comprising a primary power, couples these power supplys respectively by these delay circuits.
3. time cycle controller according to claim 2 is characterized in that also comprising that one switches switch, controls being connected of this primary power and these delay circuits.
4. time cycle controller according to claim 3 it is characterized in that each these delay circuit comprises one first resistance and one first electric capacity that is one another in series, and each these discharge circuit comprises one second resistance.
5. time cycle controller according to claim 4 is characterized in that when this change-over switch was controlled this primary power and is connected with these delay circuits, these on-off circuits were ended discharge circuit work.
6. time cycle controller according to claim 5, the start-up time that it is characterized in that each these power supply is relevant with the capacitance of the resistance value of this first resistance and this first electric capacity.
7. time cycle controller according to claim 6 is characterized in that the T=0.69 * R start-up time * C of each these power supply, and wherein R is the resistance value of this first resistance, and C is the capacitance of this first electric capacity.
8. time cycle controller according to claim 4 is characterized in that cutting off this primary power when being connected with these delay circuits when this change-over switch, and these on-off circuits start this discharge circuit.
9. time cycle controller according to claim 8 is characterized in that the capacitance of the resistance value of resistance value, this second resistance of the shut-in time of each these power supply and this first resistance and this first electric capacity is relevant.
10. time cycle controller according to claim 6 is characterized in that the T=0.69 * R start-up time * C of each these power supply, and wherein R is the resistance value of this first resistance, and C is the capacitance of this first electric capacity.
11. time cycle controller according to claim 6 is characterized in that the T=0.69 * R break time * C of each these power supply, wherein R is this first resistance and this second resistance and the resistance value that connects, and C is the capacitance of this first electric capacity.
12. time cycle controller according to claim 3 is characterized in that this change-over switch is a pulse switch.
13. time cycle controller according to claim 12 is characterized in that also comprising a trigger, couples this change-over switch and these delay circuits.
14. time cycle controller according to claim 1 is characterized in that this on-off circuit is a MOS transistor.
15. time cycle controller according to claim 1 is characterized in that this on-off circuit is any switch by the height control of Electric potentials.
16. an electronic system, wherein this electronic system can start/close a plurality of power supplys that are supplied to an assembly according to a specific timing, and this electronic system comprises:
One primary power;
A plurality of delay circuits, this primary power couples these power supplys by these delay circuits, and wherein each these delay circuit comprises one first resistance and one first electric capacity that is one another in series;
A plurality of discharge circuits couple these delay circuits respectively, and wherein each these discharge circuit comprises one second resistance; And
A plurality of on-off circuits couple these discharge circuits respectively.
17. electronic system according to claim 16 is characterized in that also comprising that one switches switch, controls being connected of this primary power and these delay circuits.
18. electronic system according to claim 17 is characterized in that when this change-over switch was controlled this primary power and is connected with these delay circuits, these on-off circuits were ended discharge circuit work.
19. electronic system according to claim 18, the start-up time that it is characterized in that each these power supply is relevant with the capacitance of the resistance value of this first resistance and this first electric capacity.
20. electronic system according to claim 19, it is characterized in that when trigger voltage is this primary power size of 0.5 times, T=0.69 * R start-up time * the C of each these power supply, wherein R is the resistance value of this first resistance, C is the capacitance of this first electric capacity.
21. electronic system according to claim 17 is characterized in that cutting off this primary power when being connected with these delay circuits when this change-over switch, these on-off circuits start this discharge circuit.
22. electronic system according to claim 21 is characterized in that the capacitance of the resistance value of resistance value, this second resistance of the shut-in time of each these power supply and this first resistance and this first electric capacity is relevant.
23. electronic system according to claim 22, it is characterized in that when trigger voltage is this primary power size of 0.5 times, T=0.69 * R start-up time * the C of each these power supply, wherein R is this first resistance and this second resistance and the resistance value that connects, C is the capacitance of this first electric capacity.
24. electronic system according to claim 17 is characterized in that this change-over switch is a pulse switch.
25. electronic system according to claim 24 is characterized in that also comprising a trigger, couples this change-over switch and these delay circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810087679 CN101546178B (en) | 2008-03-24 | 2008-03-24 | Timing control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810087679 CN101546178B (en) | 2008-03-24 | 2008-03-24 | Timing control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101546178A true CN101546178A (en) | 2009-09-30 |
| CN101546178B CN101546178B (en) | 2011-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810087679 Active CN101546178B (en) | 2008-03-24 | 2008-03-24 | Timing control device |
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| Country | Link |
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| CN (1) | CN101546178B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545844A (en) * | 2010-12-09 | 2012-07-04 | 中芯国际集成电路制造(上海)有限公司 | Delay circuit and method and device for controlling delay circuit to compensate power supply voltage drift |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2112884U (en) * | 1992-03-11 | 1992-08-12 | 谢弗伊 | Electricity-saving timing power supply device |
| DE19740932A1 (en) * | 1997-09-17 | 1999-04-01 | Siemens Ag | Circuit arrangement for determining the output power of a switching power supply |
| US6510033B1 (en) * | 2000-06-30 | 2003-01-21 | Intel Corporation | RC-timer circuit to reduce current leakage in future semiconductor processes |
| CN201001106Y (en) * | 2006-12-11 | 2008-01-02 | 比亚迪股份有限公司 | Timing electronic switch device |
-
2008
- 2008-03-24 CN CN 200810087679 patent/CN101546178B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545844A (en) * | 2010-12-09 | 2012-07-04 | 中芯国际集成电路制造(上海)有限公司 | Delay circuit and method and device for controlling delay circuit to compensate power supply voltage drift |
| CN102545844B (en) * | 2010-12-09 | 2014-07-30 | 中芯国际集成电路制造(上海)有限公司 | Delay circuit and method and device for controlling delay circuit to compensate power supply voltage drift |
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| Publication number | Publication date |
|---|---|
| CN101546178B (en) | 2011-08-10 |
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