CN1862963A - Power switch circuit - Google Patents
Power switch circuit Download PDFInfo
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- CN1862963A CN1862963A CN 200510069182 CN200510069182A CN1862963A CN 1862963 A CN1862963 A CN 1862963A CN 200510069182 CN200510069182 CN 200510069182 CN 200510069182 A CN200510069182 A CN 200510069182A CN 1862963 A CN1862963 A CN 1862963A
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Abstract
The invention discloses the power switching circuit, it can be used into the electron apparatus of the power module, it include the one waiting one signal producing circuit and the one waiting two signal producing circuit. The first signal producing circuit can produce the one waiting one signal; the second signal producing circuit connects the said first signal producing circuit, the first signal is received to export the one waiting two signal, the said second signal can control the process of the power modulus. By the course of the first signal producing circuit and the second signal producing circuit, the electron setting can be switched to the stand-by state or the common working state. The power switch circuit can make the power module stop the movement when electron apparatus staying machine, so the power consume of the electron apparatus when stand-by can be reduced highly.
Description
Technical field
The present invention relates to a kind of switching circuit, particularly relate to a kind of can be under the state of electronic installation standby, reduce the power switch circuit of electronic installation power consumption.
Background technology
The European Common Market comes into effect new laws and regulations of energy January calendar year 2001, and the power consumption of power supply unit must limit less than some when it was defined in zero load, and this restriction is strict gradually.The U.S. also stipulates July calendar year 2001 all federal government units must give priority to purchasing electronics/electrical appliance that standby consumption is lower than 1 watt in addition.
As outside the basic module, reaching the purpose of switch electronic device, and the running of maintaining the IC of system when entering standby mode is with the control peripheral circuit with mechanical switch for traditional power switch circuit.Therefore, when standby mode, at least need continue to provide the IC of this system firm power of running, thus, even during standby in appearance switch an electronic installation cuts out, but in fact the built-in system of this device is still kept in the running, can only break away from holding state at once after receiving start indication and enters operating state once more one, so also can't reduce the consumption of power supply.
For example, announce the novel patent of TaiWan, China No. 387584, a kind of " the telegram in reply switching on and shutting down control circuit that is used for computer power supply " disclosed, this switching on and shutting down control circuit comprises one in order to produce the power sensor detecting circuit of one first signal, one power control circuit that is electrically connected with this power sensor detecting circuit, this power control circuit is in order to detect a secondary signal and to produce one the 3rd signal, in response to this first signal, make a power supply unit place an open state and produce the 3rd signal, and in response to this secondary signal, change the 3rd signal and make this power supply unit return back to a holding state.Explanation according to the 5th page of relevant Fig. 1 of specification, this switching on and shutting down control circuit is moved by a battery supply, and the power supply unit that connects this circuit can provide the chipset of a standby power to system at holding state usually, with the active host in response to wake events (wake-up event).That is though computer has been holding state, power supply unit still must be given system consumption by continued power.This switching on and shutting down control circuit is mainly the computer of understand the determining time institute's proximity switch machine problem of sending a telegram in reply after having a power failure, so its consumption to the reduction standby power there is no any express or implied suggestion or exposure.
In order to reduce power supply power consumption, a kind of method is for example to adopt trigger mode to come work under standby mode, and satisfying the regulation of International Energy Agency (IEA), that is stand-by power consumption need be reduced to below 1 watt.This standard criterion has been stipulated system under holding state, the standby power amount that switched power supplier (SMPS) can consume.
Become strict along with standard of energy heals, require the consumed power when standby need reach below 1 watt, for the power consumption of present electronic component and electronic installation, not a duck soup.Yet,, reduce the technical need that the power consumption of electronic installation when standby become a kind of permanent serious hope in order to economize electric standard in response to the stricter energy.
Summary of the invention
In view of this, the present invention discloses a kind of power switch circuit, the power consumption when it can reduce the electronic installation standby quite effectively.
One embodiment of power switch circuit disclosed in this invention comprises that one first signal generating circuit and a secondary signal produce circuit, and wherein first signal generating circuit is in order to export one first signal; Secondary signal produces circuit and is connected with first signal generating circuit, output one secondary signal after receiving first signal, and secondary signal may command one power module stops or coming into operation.
Another embodiment of power switch circuit disclosed by the invention comprises that one first signal generating circuit, a secondary signal produce circuit and one drive circuit, and wherein first signal generating circuit is in order to export one first signal; Secondary signal produces circuit and is connected with first signal generating circuit, output one secondary signal after receiving this first signal, and this secondary signal is a high level or a low level voltage; One drive circuit is exported a drive signal after receiving secondary signal, stop or coming into operation to drive a power module.
According to an embodiment of the electronic installation of using the disclosed power switch circuit of the present invention, it comprises a direct current power supply; One signal generating circuit is in order to export a triggering signal; One control circuit, it is connected with signal generating circuit, and provides the electric power of running by DC power supply, and it exports a high level or low level voltage when receiving triggering signal; And one drive circuit, being connected with control circuit, it exports a drive signal after receiving this high level or low level voltage, stop or coming into operation to drive a power module.
The illustrative embodiment according to the present invention, because disclosed power switch circuit can be controlled stopping of a power module or come into operation, therefore a changeable electronic installation enters holding state or normal operating conditions.In other words, by power switch circuit disclosed by the invention, system IC no longer bears to switch and enters the holding state or the function of normal operating conditions, therefore the IC of system can decommission under holding state fully, this moment, power module need not be again to the system supply working power, whole system can be decommissioned fully, reach smoothly that to make an electronic installation almost be the effectiveness of electric consumption not under holding state.Simultaneously, by the running of disclosed power switch circuit, it can make power module enter normal operating conditions by holding state, and this moment, power module provided power for operation to system again, so whole system is able to operate as normal once more.
Below in execution mode, be described in detail detailed features of the present invention and advantage, its content is enough to make those skilled in the art to understand technology contents of the present invention and implements according to this, and according to the disclosed content of this specification, claim and accompanying drawing, any those skilled in the art can understand purpose and the advantage that the present invention is correlated with easily.
Above about content of the present invention explanation and the explanation of following execution mode in order to demonstration with explain principle of the present invention, and provide claim of the present invention further to explain.
Description of drawings
Figure 1A and Figure 1B are the system block diagrams of power switch device disclosed in this invention.
Fig. 2 is first embodiment of the detailed circuit diagram of power switch device disclosed in this invention.
Fig. 3 is second embodiment of the detailed circuit diagram of power switch device disclosed in this invention.
Fig. 4 A is the 3rd embodiment of the detailed circuit diagram of power switch device disclosed in this invention.
Fig. 4 B is the 4th embodiment of the detailed circuit diagram of power switch device disclosed in this invention.
Wherein, Reference numeral:
The 10-rectification circuit
20-first signal generating circuit
The 30-secondary signal produces circuit
The 40-drive circuit
41-transistor 50-voltage stabilizing circuit
The 51-Zener diode
The 60-power module
The 70-DC power supply
The 110-rectification circuit
The 120-signal generating circuit
The 130-control circuit
The 150-voltage stabilizing circuit
The 151-Zener diode
The 160-power module
161-pulse bandwidth modulation power source controller
The 162-transformer
The 170-DC power supply
The SW-switch
The D1-diode
The D2-diode
The D3-diode
The D4-diode
R1-first resistance
R2-second resistance
R3-the 3rd resistance
R4-the 4th resistance
R5-the 5th resistance
R6-the 6th resistance
R7-the 7th resistance
R8-the 8th resistance
C1-first electric capacity
C2-second electric capacity
C3-the 3rd electric capacity
Embodiment
For making purpose of the present invention, structure, feature and function thereof there are further understanding, cooperate embodiment to be described in detail as follows now.
At first please refer to Figure 1A, its illustration one have power switch circuit disclosed in this invention in interior system block diagrams, include a rectification circuit 10, one first signal generating circuit 20, secondary signal generation circuit 30, a power module 60, and a direct current power supply DC.Rectification circuit 10 is connected with an AC power AC and power module 60, and AC power AC rectification become exports to power module 60 after flowing power supply always.First signal generating circuit 10 joins with DC power supply DC, and secondary signal produces 20 in circuit and joins with DC power supply DC by first signal generating circuit 10.First signal generating circuit 20 is in order to export one first signal.Secondary signal produces circuit 30 and joins with first signal generating circuit 20 and power module 60, it is except that the DC power supply that receives DC power supply DC output, and output one secondary signal is given power module 60 after receiving first signal that first signal generating circuit 20 exported, secondary signal controllable power module 60 stops or coming into operation, and makes the system by power module 60 power supplies enter holding state or normal operating conditions.When power module 60 normal operations, this rectification circuit 10 provides the DC power supply source module 60 normal operations.
Please refer to Figure 1B again, its illustration another have power switch circuit disclosed in this invention in interior system block diagrams, include a rectification circuit 10, one first signal generating circuit 20, secondary signal generation circuit 30, one drive circuit 40, a voltage stabilizing circuit 50, and a power module 60.It forms with Action Specification as follows.
In one embodiment, in fact power module 60 can be a power supply unit.In another embodiment, can be a pulse width modulation (PWM) power-supply controller of electric.In another embodiment, can be a power supply control chip.Power module 60 receives the DC power supply of rectification circuit 10 outputs, can send it to electronic installation, and the system that makes can be subjected to the power supply supply and normal operation.Again, this first signal generating circuit 20 is connected voltage stabilizing circuit 50, the DC power supply that receives self-rectifying circuit 10 to provide with secondary signal generation circuit 30 in this illustrative calcspar.
By above circuit framework, under the electronic installation normal operating conditions, the required power supply of system can be supplied to system via power module 60 again via after rectification circuit 10 rectifications.As desire to make electronic installation to enter holding state by normal operating conditions, at first this first signal generating circuit is exported one first signal, this secondary signal produces circuit 30 after receiving this first signal, export a secondary signal, the running of the power module of this this electronic installation of secondary signal may command, that is the power module 60 in the work of this script just decommissions after receiving this secondary signal, and system promptly enters holding state.Under system entered holding state, power module 60 was because of decommissioning, so almost no longer consume the DC power supply of being exported by rectification circuit 10.What consumed at this moment, only remainingly produces the running of circuit 30 and required little power power supply in order to keep secondary signal.As desire to make electronic installation to enter normal operating conditions again by holding state, at first also produce one first signal by this first signal generating circuit 20, this secondary signal produces circuit 30 and export a secondary signal after receiving this first signal, the running of the power module of this this electronic installation of secondary signal may command, that is the just normal operation once again after receiving this secondary signal of the power module 60 under this script holding state, system promptly enters normal operating conditions by holding state.
Please refer to Fig. 2, be first embodiment of power switch circuit disclosed in this invention.
In first embodiment, rectification circuit 10 is a full-wave bridge rectifier circuit, is made up of four diode D1～D4, flows power supply in order to the AC power rectification is become always.(not shown) in another embodiment, the actual needs of visual circuit running adopts half-wave rectifying circuit.
First signal generating circuit, 20 outputs, one first signal produces circuit 30 to secondary signal.First signal generating circuit 20 comprises that at least one can produce the assembly of voltage level change, and for example switch SW is toggle switch (toggle switch) this illustrated person.Shown switch SW one end is connected to secondary signal and produces circuit 30, and the other end then is connected to earth terminal by first resistance R 1.As consider the stability and the discriminability of the signal that switch SW produced in first signal generating circuit 20, visual actual demand increase is second resistance R 2 and first capacitor C 1 for example, but the two non-imperative.Second resistance R, 2 one ends and first resistance R 1 are joined, and the other end then produces circuit 30 with secondary signal and joins.One end of first capacitor C 1 and second resistance R 2 are joined, and the other end and earth terminal join.
First signal that the DC power supply that 30 reception rectification circuits 10 of secondary signal generation circuit are exported and first signal generating circuit 20 are exported, export a secondary signal then, this secondary signal can be the signal of a high level or low level voltage, by the difference of voltage level and control the running of power module.In the present embodiment, it is a JK flip-flop that secondary signal produces circuit 30, and the power supply of its J input and K input and this trigger joins, that is joins with an end of this switch SW; Q output suspension joint, the Q output then is connected to drive circuit 40.In another embodiment, also can be changed to Q output suspension joint, and be connected to drive circuit 40 by the Q output.In addition, illustrated according to the aforementioned system calcspar, those skilled in the art ought be as can be known, and Q output or Q output also can directly connect power module 60 and control its running, should look the characteristic of power module 60 and are changed.
Drive circuit 40 includes a transistor 41, is a NPN type two-carrier transistor.Can select positive-negative-positive two-carrier transistor in another embodiment for use; Then can select transistors such as MOSFET, IGBT for use in another embodiment.Be connected with one the 3rd resistance R 3 between Q output and the transistor 41, the other end that the output of transistor 41 (collector terminal) is connected with one the 4th resistance R, 4, the four resistance R 4 then is connected with power module 60.The emitter-base bandgap grading end of transistor 41 then is to be connected to earth terminal.
Operate under the steady operation condition in order to make secondary signal produce circuit 30, can be defined in an operating voltage range by input and the output that voltage stabilizing circuit 50 makes secondary signal produce circuit 30.Include a Zener (ZENER) diode 51 and one the 3rd capacitor C 3 in this example in this voltage stabilizing circuit 50, it is that an end is connected with the power supply that secondary signal produces circuit 30, and the other end then is connected to earth terminal.
In addition, in order to stablize integrated circuit, the output of rectification circuit 10 is connected with one second capacitor C 2, as the usefulness of filtering.The output of rectification circuit 10 is connected with the 5th resistance R 5 and the 6th resistance R 6 in addition.The 5th resistance R 5 is connected mutually with the 6th resistance R 6, and the other end of the 6th resistance R 6 is connected with one the 3rd capacitor C 3.In another embodiment, can be via suitably selecting, and the 5th resistance R 5 and the 6th resistance R 6 are replaced with single resistance.Between the output of rectification circuit 10 and power module 60, be connected with the 7th resistance R 7 and the 8th resistance R 8.In another embodiment, can be via suitably selecting, and the 7th resistance R 7 and the 8th resistance R 8 are replaced with single resistance.
Please refer to Fig. 3, be second embodiment of power switch circuit disclosed in this invention.With the assembly of Fig. 2 same numeral, its composition is identical haply with the function and first embodiment, so do not give unnecessary details at this in a second embodiment.
This second embodiment includes a direct current power supply 70, one ends and switch SW electrically connects, and the other end then is connected with earth terminal.In this embodiment, first signal generating circuit and secondary signal produce circuit by one for example the DC power supply 70 of battery provide running required power supply, the power supply that rectification circuit 10 is exported offers then that system uses and gives birth to circuit 20 and secondary signal with this first signal and produces circuit 30 and be separated, and therefore can omit at this need not for the 5th resistance R 5 among first embodiment and the 6th resistance R 6.As desire to make electronic installation to enter holding state by normal operating conditions, at first produce one first signal and export to secondary signal and produce circuit 30 by first signal generating circuit 20, secondary signal produces circuit 30 and then export the secondary signal of the running of a controllable power module 60 to power module 60 after receiving this first signal, and power module 60 is decommissioned.At this moment, system promptly enters holding state and consumes the power supply that rectification circuit 10 is provided hardly, except the standby consumed power that can significantly reduce electronic installation, more because in this second embodiment, first signal generating circuit produces the required power supply of circuit running with secondary signal and is supplied by an independent DC power supply 70 that separates with rectification circuit 10, rectification circuit 10 need provide the power supply of a little to produce the usefulness of circuit running as first signal generating circuit and secondary signal in first embodiment, cause still having faint stand-by power consumption, the illustrated person of this second embodiment is further all reduced this faint power consumption part, and the holding state power consumption of total system is descended more once more.
Please refer to Fig. 4 A again, its illustration one has the electronic installation of another switching circuit of the present invention embodiment, a LCD screen for example, and it comprises a rectification circuit 110, a signal generating circuit 120 and a control circuit 130.Signal generating circuit 120 comprises a switch SW in order to export a triggering signal; Control circuit 130 is connected with signal generating circuit 120, and provides the electric power of running by this DC power supply DC, and control circuit 130 is exported one and had the control signal of high level or low level voltage after receiving this triggering signal; Power module 160 responsive control signals and stop or coming into operation.160 pairs of display units of this power module, microprocessor when holding state (all not label) are not all powered; When normal operating conditions, 160 beginnings of power module provide power supply to display unit, microprocessor.Present embodiment also comprises a voltage stabilizing circuit 150 and gives control circuit 130 so that a stable operating voltage to be provided.
In this embodiment, power module 160 is made up of pulse bandwidth modulation (PWM) power-supply controller of electric 161 and a transformer 162 at least.Pulse bandwidth modulation power source controller 161 is connected with control circuit 130, receives control signal.One end of transformer 162 primary sides is connected with pulse bandwidth modulation power source controller 161, and the other end connects rectification circuit 110.Except pulse bandwidth modulation power source controller 161 and transformer 162, power module 160 still comprises the required electronic building bricks such as transistor, resistance and electric capacity of normal operation as shown in the figure, and this part is known by those skilled in the art, repeats no more.
Please refer to Fig. 4 B, its illustration one has another embodiment of the electronic installation of another switching circuit of the present invention embodiment, a LCD screen for example, and label is identical with Fig. 4 A/similar person, and its function is identical with running/and similar, no longer repeat specification.
In this embodiment, signal generating circuit 120 and control circuit 130 by one for example the DC power supply 170 of battery provide running required power supply, the power supply that rectification circuit 110 is exported then offers system and uses and be separated with signal generating circuit 120 and control circuit 130.
In the embodiment of Fig. 4 A and Fig. 4 B, one drive circuit also can be set be connected in control circuit 130.Drive circuit, composition shown in the embodiment, its role is to export a drive signal to power module 160 according to the voltage level of control signal, with the running of driving power module 160 as described above.When only being enough to the running of driving power module 160 as secondary signal, the use that also can omit drive circuit.And the effect of voltage stabilizing circuit 150 is to provide a stable operating voltage to this signal generating circuit 120 and control circuit 130.The also non-imperative of use of thought voltage stabilizing circuit 50, whether it is selected for use for visual actual demand.
According to embodiments of the invention, can be applicable to the electronic installation of computer system, display unit, family expenses display, television set, videocorder, top box of digital machine, sound equipment or the like.According to embodiments of the invention because the IC of system need not bear the function of opening machine, but so power module halt system electric power during standby, and can stop fully moving and reduce the consumption of firm power; Running by first and second signal generating circuit, activating power module for power supply once more, and unlocking electronic device again, that is under holding state, only the running of first and second signal generating circuit need be kept, and the power consumption under the holding state can be significantly reduced.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (44)
1. a power switch circuit is applied to one and has in the electronic installation of power module, it is characterized in that, comprising:
One first signal generating circuit is exported one first signal; And
One secondary signal produces circuit, is connected with described first signal generating circuit, exports a secondary signal after receiving described first signal, and described secondary signal is controlled described power module and stopped or coming into operation.
2. power switch circuit according to claim 1 is characterized in that, also comprises a voltage stabilizing circuit, and it produces circuit with described first signal generating circuit and secondary signal and is connected.
3. power switch circuit according to claim 2 is characterized in that, described voltage stabilizing circuit comprises a Zener diode.
4. power switch circuit according to claim 1 is characterized in that, described secondary signal is a high level or low level voltage.
5. power switch circuit according to claim 1 is characterized in that, described first signal generating circuit is connected with a direct current power supply, and described secondary signal produces circuit and is connected with described DC power supply by described first signal generating circuit.
6. power switch circuit according to claim 5 is characterized in that, described DC power supply is once the power supply of rectification or a battery supply.
7. power switch circuit according to claim 1 is characterized in that, described first signal generating circuit comprises a switch, and an end produces circuit with described secondary signal and is connected.
8. power switch circuit according to claim 7 is characterized in that, described first signal generating circuit also comprises:
One first resistance, an end is connected with described switch, and the other end is connected to earth terminal;
One second resistance, an end is connected with described switch; And
One electric capacity, an end is connected with described second resistance, and the other end is connected to earth terminal.
9. power switch circuit according to claim 1 is characterized in that, described secondary signal produces circuit and comprises a trigger.
10. power switch circuit according to claim 1 is characterized in that, also comprises a rectification circuit, in order to receive an AC power, flows power supply to offer described power module so that described AC power rectification is become always.
11. power switch circuit according to claim 10 is characterized in that, also comprises at least one resistance, it is connected between described rectification circuit and described first signal generating circuit.
12. power switch circuit according to claim 11 is characterized in that, also comprises an electric capacity, it is connected between described at least one resistance and the earth terminal.
13. power switch circuit according to claim 10 is characterized in that, also comprises at least one resistance, it is connected between described rectification circuit and the described power module.
14. power switch circuit according to claim 10 is characterized in that, also comprises an electric capacity, it is connected between described rectification circuit and the described power module.
15. power switch circuit according to claim 1, it also comprises one drive circuit, be connected in described secondary signal and produce between circuit and the power module, described drive circuit is exported a drive signal to drive described power module after receiving described secondary signal.
16. power switch circuit according to claim 15 is characterized in that, described drive circuit comprises a transistor and at least one resistance, and described at least one resistance is connected with described transistor.
17. a power switch circuit is applied to one and has in the electronic installation of power module, it is characterized in that, comprising:
One direct current power supply;
One first signal generating circuit connects with described DC power supply, exports one first signal;
One secondary signal produces circuit, is connected with described first signal generating circuit, exports a secondary signal after receiving described first signal, and described secondary signal is controlled described power module and stopped or coming into operation; And
One drive circuit produces circuit with described secondary signal and described power module is connected, receive described secondary signal after, export a drive signal, to drive described power module.
18. power switch circuit according to claim 17 is characterized in that, also comprises a voltage stabilizing circuit, produces circuit with described first signal generating circuit and described secondary signal and is connected.
19. power switch circuit according to claim 18 is characterized in that, described voltage stabilizing circuit comprises a Zener diode.
20. power switch circuit according to claim 17 is characterized in that, described first signal generating circuit comprises a switch, and an end produces circuit with described secondary signal and is connected.
21. power switch circuit according to claim 20 is characterized in that, described first signal generating circuit also comprises:
One first resistance, an end is connected with described switch, and the other end is connected to earth terminal;
One second resistance, an end is connected with described switch; And
One electric capacity, an end is connected with described second resistance, and the other end is connected to earth terminal.
22. power switch circuit according to claim 17 is characterized in that, described secondary signal produces circuit and comprises a trigger.
23. power switch circuit according to claim 17 is characterized in that, described drive circuit comprises a transistor and at least one resistance, and described at least one resistance is connected with described transistor.
24. power switch circuit according to claim 17 is characterized in that, also comprises a rectification circuit, in order to receive an AC power, so that described AC power rectification is become described DC power supply to offer described power module.
25. power switch circuit according to claim 24 is characterized in that, also comprises at least one resistance, it is connected between described rectification circuit and described first signal generating circuit.
26. power switch circuit according to claim 25 is characterized in that, also comprises an electric capacity, it is connected between described at least one resistance and the earth terminal.
27. power switch circuit according to claim 24 is characterized in that, also comprises at least one resistance, it is connected between described rectification circuit and the described power module.
28. power switch circuit according to claim 24 is characterized in that, also includes an electric capacity, is connected between described rectification circuit and the described power module.
29. a power switch circuit is characterized in that, comprising:
One rectification circuit;
One signal generating circuit comprises a switch to export a triggering signal;
One control circuit is connected with described signal generating circuit, and described control circuit is exported the control signal of a high level or low level voltage after receiving described triggering signal; And
One power module is connected with described rectification circuit and described control circuit, and it begins or quit work after receiving described control signal.
30. power switch circuit according to claim 29 is characterized in that, described signal generating circuit and described control circuit provide required DC power supply by a battery or by described rectification circuit.
31. power switch circuit according to claim 29 is characterized in that, also comprises a voltage stabilizing circuit, described voltage stabilizing circuit is connected with described signal generating circuit and described control circuit.
32. power switch circuit according to claim 31 is characterized in that, described voltage stabilizing circuit comprises a Zener diode.
33. power switch circuit according to claim 29 is characterized in that, also comprises one drive circuit, is connected with described control circuit, it exports a drive signal after receiving described control signal.
34. power switch circuit according to claim 33 is characterized in that, described drive circuit comprises a transistor and at least one resistance, and described at least one resistance is connected with described transistor.
35. power switch circuit according to claim 29 is characterized in that, described power module includes:
One pulse bandwidth modulation power source controller is connected with described control circuit, receives described control signal; And
One transformer, an end of its primary side is connected with described pulse bandwidth modulation power source controller, and the other end connects described rectification circuit.
36. power switch circuit according to claim 29 is characterized in that, described power module is a power supply unit, a pulse bandwidth modulation power source controller, or a power management chip.
37. a power switch circuit is characterized in that, comprising:
One rectification circuit;
One direct current power supply;
One signal generating circuit connects described DC power supply, comprises a switch to export a triggering signal;
One control circuit is connected with described signal generating circuit, and described control circuit is exported the control signal of a high level or low level voltage after receiving described triggering signal; And
One power module is connected with described rectification circuit and described control circuit, and it begins or quit work after receiving described control signal.
38., it is characterized in that described signal generating circuit and described control circuit provide required DC power supply by a battery or by described rectification circuit according to the described power switch circuit of claim 37.
39., it is characterized in that according to the described power switch circuit of claim 37, also comprise a voltage stabilizing circuit, described voltage stabilizing circuit is connected with described signal generating circuit and described control circuit.
40., it is characterized in that described voltage stabilizing circuit comprises a Zener diode according to the described power switch circuit of claim 39.
41., it is characterized in that according to the described power switch circuit of claim 37, also comprise one drive circuit, be connected with described control circuit, it exports a drive signal after receiving described control signal.
42., it is characterized in that described drive circuit comprises a transistor and at least one resistance according to the described power switch circuit of claim 41, described at least one resistance is connected with described transistor.
43., it is characterized in that described power module includes according to the described power switch circuit of claim 37:
One pulse bandwidth modulation power source controller is connected with described control circuit, receives described control signal; And
One transformer, an end of its primary side is connected with described pulse bandwidth modulation power source controller, and the other end connects described rectification circuit.
44., it is characterized in that described power module is a power supply unit, a pulse bandwidth modulation power source controller, or a power management chip according to the described power switch circuit of claim 37.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100691829A CN100544207C (en) | 2005-05-12 | 2005-05-12 | Power switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100691829A CN100544207C (en) | 2005-05-12 | 2005-05-12 | Power switch circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1862963A true CN1862963A (en) | 2006-11-15 |
| CN100544207C CN100544207C (en) | 2009-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100691829A Expired - Fee Related CN100544207C (en) | 2005-05-12 | 2005-05-12 | Power switch circuit |
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| CN (1) | CN100544207C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103577621A (en) * | 2012-08-08 | 2014-02-12 | 扬智科技股份有限公司 | Layout method of chip and power gating cell thereof |
| CN107889321A (en) * | 2016-09-29 | 2018-04-06 | 通用电气照明解决方案有限公司 | Drive circuit |
-
2005
- 2005-05-12 CN CNB2005100691829A patent/CN100544207C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103577621A (en) * | 2012-08-08 | 2014-02-12 | 扬智科技股份有限公司 | Layout method of chip and power gating cell thereof |
| CN103577621B (en) * | 2012-08-08 | 2017-06-23 | 扬智科技股份有限公司 | The layout method of chip and its power switch circuit |
| CN107889321A (en) * | 2016-09-29 | 2018-04-06 | 通用电气照明解决方案有限公司 | Drive circuit |
| CN107889321B (en) * | 2016-09-29 | 2020-06-16 | 卡任特照明解决方案有限公司 | Driving circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100544207C (en) | 2009-09-23 |
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