CN101986511B - Power supply control circuit - Google Patents
Power supply control circuit Download PDFInfo
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- CN101986511B CN101986511B CN 200910151199 CN200910151199A CN101986511B CN 101986511 B CN101986511 B CN 101986511B CN 200910151199 CN200910151199 CN 200910151199 CN 200910151199 A CN200910151199 A CN 200910151199A CN 101986511 B CN101986511 B CN 101986511B
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- power supply
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- control circuit
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- 230000001939 inductive effect Effects 0.000 claims abstract description 16
- 229910044991 metal oxide Inorganic materials 0.000 claims description 11
- 150000004706 metal oxides Chemical class 0.000 claims description 11
- 239000004065 semiconductor Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 241001269238 Data Species 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The invention discloses a power supply control circuit which is electrically connected to a power supply module so as to provide load current to load inductance. The power supply control circuit comprises an inductance driver module and a control module, wherein the inductance driver module comprises a first loop and a second loop which share one inductive circuit; under a first power supply mode, the first loop is conducted, the load current flows to an earth terminal via the first loop from the power supply module; when the control module sends a switching signal to the inductance driver module, the first loop is closed, and the second loop is conducted; under the inertia action of the current of the load inductance in the inductive circuit, the load current flows to a high-potential terminal from the earth terminal via the second loop.
Description
Technical field
The present invention refers to a kind of power supply supply control circuit especially about a kind of control circuit.
Background technology
Science and technology develops rapidly in recent years, and the speed that computer system is carried out is more and more faster, and operand is also more and more huger, and the configuration space of adding computer hardware develops towards miniaturization, so the heat radiation of computer hardware is a urgent problem.
And the computer hardware heat dissipation equipment that the most often is used is exactly a radiator fan, and hot-air that can computer housing is inner during the radiator fan running is extracted out, and then significantly reduces the computer housing temperature inside.Prior art is normal utilize provide the radiator fan power supply whether and the time scale relation with the adjustment rotation speed of the fan.Yet, required various reference datas when the controller of radiator fan can record controls when radiator fan turns round, if when computer power supply interrupts suddenly, the reference data that can cause controller to write down is lost.After computer power supply restored electricity, the controller of radiator fan then must detect again can regain needed reference data.
In order to solve the problem that above-mentioned prior art radiator fan promptly interrupts at once after main power source is stopped power supply, common solution is stand-by power supply of preparation in power supply circuit.When main power source was stopped power supply, stand-by power supply was about to non-firm power and offers radiator fan to keep its running.
But, because the manufacturing cost of stand-by power supply is quite high, so general employed stand-by power supply all only provides of short duration non-firm power to supply radiator fan to use.Under the main power source of long period was stopped power supply state, the controller of radiator fan still can't obtain enough non-firm powers and preserve the reference data that it writes down.
Comprehensive the above; Prior art utilizes stand-by power supply to be used as non-firm power, so as to the running of radiator fan when main power source is stopped power supply is provided, because the manufacturing cost of stand-by power supply is high; If will prepare the stand-by power supply of enough electric power, then can cause the cost of power supply circuit significantly to rise.Otherwise if only prepare less stand-by power supply, though manufacturing cost is able to control, under the main power source of long period was stopped power supply situation, the controller of power supply circuit still can't obtain enough non-firm powers and preserve the reference data that it writes down.
Summary of the invention
Technical problem and purpose that institute of the present invention desire solves:
Edge this, main purpose of the present invention provides a kind of control circuit, refers to a kind of power supply supply control circuit especially.This power supply supply control circuit has an inductance driver module.And, under the state that power supply module is stopped power supply, utilize the inertia of current of load inductance in this inductance driver module, and cooperate to switch the direction that different circuits change load current, so as to control module is supplied power.
The technological means that the present invention deals with problems:
The technological means that the present invention deals with problems provides a kind of power supply supply control circuit for being electrically connected at power supply module, drives load so as to a load current is provided.This power supply supply control circuit comprises inductance driver module and control module; Wherein, the inductance driver module has comprised first loop and second loop of sharing an inductive circuit.Under first powering mode, first loop be conducting state and load current by power supply module via first loop stream to earth terminal.When control module was sent switching signal to inductance driver module, first loop was promptly closed and second loop is conducting, under the inertia of current effect of the load inductance in inductive circuit, load current promptly by earth terminal via second loop stream to hot end.
In a preferred embodiment of the present invention, first loop and second loop are for utilize a plurality of metal-oxide semiconductor (Metal-Oxide Semiconductor separately; MOS) be used as switch in the circuit.
In another preferred embodiment of the present invention; Control module has a voltage comparison unit; This voltage comparison unit is to do a comparison in order to magnitude of voltage and one first reference voltage level to hot end, and sends switching signal to inductance driver module according to comparison.
In another preferred embodiment of the present invention, power supply supply control circuit does not also have a charge-discharge modules, and this charge-discharge modules is electrically connected between hot end and the earth terminal, and parallelly connected with power supply module, inductance driver module and control module.
The present invention's effect against existing technologies:
Compared to existing power supply circuit, the present invention utilizes the inertia of current of load inductance in the inductance driver module, under the state that power supply module is stopped power supply, switches the direction that different circuits change load current, so as to control module is supplied power.Therefore, the present invention need not use expensive stand-by power supply under main power source is stopped power supply situation, the controller non-firm power of power supply supply control circuit to be provided, and preserves the time of the reference data that it was write down to prolong controller.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Fig. 1 is the logical block sketch map of power supply supply control circuit of the present invention;
Fig. 2 A is a kind of enforcement aspect of first switch;
Fig. 2 B is another enforcement aspect of first switch;
Fig. 3 is first view of specific embodiment of the present invention;
Fig. 4 is second view of specific embodiment of the present invention;
Fig. 5 is the third state sketch map of specific embodiment of the present invention; And
Fig. 6 is the four condition sketch map of specific embodiment of the present invention.
Wherein, Reference numeral
Power supply module 100,100a
Power supply provider switch 11
Load 200,200a
Power supply supply control circuit 300
First switch 311,311a, 311b
Second switch 312,312a
The 3rd switch 313,313a
The 4th switch 314,314a
Driver module mains switch 315
Charge- discharge modules 33,33a
Load inductance L
The first end points P1
The second end points P2
The 3rd end points P3
The 4th end points P4
Inductive circuit LoopL
The first loop Loop1
The second loop Loop2
Principal current Is
Control module electric current I 1
Load current I2, I3
Charge-discharge modules electric current I c1, Ic2
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are done concrete description:
The present invention refers to a kind of power supply supply control circuit especially about a kind of control circuit.Below enumerate a preferred embodiment now with explanation the present invention, right those skilled in the art know that all this is merely one for example, and are not in order to limit invention itself.The detailed description of relevant this preferred embodiment is following.
See also Fig. 1, Fig. 1 is the logical block sketch map of power supply supply control circuit of the present invention.Power supply supply control circuit 300 of the present invention is for being electrically connected at power supply module 100 and driving load 200; So as to providing load current to the load inductance L that drives load 200, power supply supply control circuit 300 is for comprising inductance driver module 31 and control module 32.
Above-mentioned inductive circuit LoopL is from the 3rd end points P3, in regular turn electrically connect load inductance L and the 4th end points P4.
The first above-mentioned loop Loop1, be from the first end points P1 in regular turn electrically connect first switch 311 to the 3rd end points P3 of inductive circuit LoopL, and via the 4th end points P4 of inductive circuit LoopL, the electrically connect second switch 312 and the second end points P2 in regular turn.
The second above-mentioned loop Loop2, be from the first end points P1 in regular turn electrically connect the 3rd switch 313 to the 4th end points P4 of inductive circuit LoopL, and via the 3rd end points P3 of inductive circuit LoopL, electrically connect the 4th switch 314 and the second end points P2 in regular turn.
Further, control module 32 also can have voltage comparison unit 321, does comparison in order to the magnitude of voltage to hot end with predetermined first reference voltage level and second reference voltage level.
Further, in preferred embodiment of the present invention, power supply supply control circuit 300 also has charge-discharge modules 33.Charge-discharge modules 33 is for being electrically connected between hot end and the earth terminal, and parallelly connected with power supply module 100, inductance driver module 31 and control module 32.
Further, power supply supply control circuit 300 also has driver module mains switch 315.Driver module mains switch 315 is for to be electrically connected between the first end points P1 of hot end and inductance driver module 31, and driver module mains switch 315 and control module 32 electrically connects.
For characteristic of the present invention and spirit are more clearly disclosed, below will enumerate a concrete preferred embodiment and know all that with the right those skilled in the art of explanation the present invention this is merely one for example, and be not in order to limit invention itself.
See also Fig. 2 A and Fig. 2 B, Fig. 2 A is a kind of enforcement aspect of the first switch 311a, and Fig. 2 B is another enforcement aspect of the first switch 311b.Wherein, the first above-mentioned switch 311 can be N type or P type metal-oxide semiconductor (Metal-Oxide Semiconductor; MOS) the first switch 311a that is constituted; Further, the above-mentioned first switch 311 first switch 311b that also can be relay and constituted.In like manner, second switch 312, the 3rd switch 313, the 4th switch 314 and driver module mains switch 315 also can be made up of N type or P type metal-oxide semiconductor or relay.
Please continue to consult Fig. 3, Fig. 3 is first view of specific embodiment of the present invention.Wherein, the first switch 311a, second switch 312a, the 3rd switch 313a and the 4th switch 314a are metal-oxide semiconductor.Charge-discharge modules 33a is electric capacity.Power supply module 100a is a kind of direct current source of supply, and power supply module 100a also comprises power supply provider switch 11.Further, load 200a is a kind of DC Brushless Motor.
When 11 conductings of power supply provider switch and power supply module 100a normal power supply, power supply module 100a provides a principal current Is.And principal current Is forms charge-discharge modules electric current I c1, control module electric current I 1 and load current I2 to flow into charge-discharge modules 33a, control module 32 and inductance driver module 31 respectively.
Wherein, inductance driver module 31 is to be in first powering mode.Under first powering mode, the first switch 311a and second switch 312a make the first loop Loop1 conducting for unlatching, and load current I2 flow to earth terminal along the first loop Loop1 via the second end points P2 from the first end points P1.
Please continue to consult Fig. 4, Fig. 4 is second view of specific embodiment of the present invention.When power supply provider switch 11 is closed and when making power supply module 100a stop 300 power supplies of power supply supply control circuit, charge-discharge modules 33a promptly begins to discharge charge-discharge modules electric current I c2.And charge-discharge modules electric current I c2 forms control module electric current I 1 and flows into control module 32 and inductance driver module 31 respectively with load current I2.
Wherein, inductance driver module 31 also is in first powering mode.Change to say it, this moment, the first switch 311a and second switch 312a made the first loop Loop1 conducting for unlatching, and load current I2 flow to earth terminal along the first loop Loop1 via the second end points P2 from the first end points P1.
Then see also the third state sketch map of Fig. 5 Fig. 5 for specific embodiment of the present invention.When voltage comparison unit 321 judges that the magnitude of voltage of hot end is below or above the first predetermined reference voltage level; Control module 32 is sent the first switch 311a, second switch 312a, the 3rd switch 313a and the 4th switch 314a of switching signal to inductance driver module 31, and inductance driver module 31 gets into second powering mode.
Following at second powering mode, the first switch 311a and second switch 312a promptly close and the first loop Loop1 are closed, and the 3rd switch 313a and the 4th switch 314a promptly open and make the second loop Loop2 conducting.
At this moment, under the inertia of current effect of load inductance L, load current I3 flow to hot end along the second loop Loop2 via the first end points P1 from the second end points P2.Therefore, load current I3 and charge-discharge modules electric current I c2 conflux and form control module electric current I 1, and flow to control module 32.
At last, see also Fig. 6, Fig. 6 is the four condition sketch map of specific embodiment of the present invention.When voltage comparison unit 321 judged that the magnitude of voltage of hot end is below or above the second predetermined reference voltage level, control module 32 was sent power switch signal to driver module mains switch 315.
After driver module mains switch 315 received power switch signal, driver module mains switch 315 promptly got into closed condition and makes inductance driver module 31 and power supply module 100a, charge-discharge modules 33a and this control module 32 be off state.
At this moment, charge-discharge modules 33a only need discharge charge-discharge modules electric current I c2 to form the required control module electric current I 1 of control module 32.Inductance driver module 31 is not then done any action that provides or accept electric power because of being off state with power supply module 100a, charge-discharge modules 33a and this control module 32.
Comprehensive the above; Power supply supply control circuit 300 of the present invention utilizes the inertia of current of load inductance L in the inductance driver module 31; Under the state that power supply module 100 is stopped power supply; Change the direction of load current by the conducting state of switching first loop and second loop, so as to providing control module 32 another power supply approach.
In addition, power supply supply control circuit 300 of the present invention also can have charge-discharge modules 33.Therefore, under the state that power supply module 100 is stopped power supply, charge-discharge modules 33 supply control modules 32 electric power capable of using.
Further, power supply supply control circuit 300 of the present invention also can have driver module mains switch 315.Therefore; Under the state that power supply module 100 is stopped power supply; Can close driver module mains switch 315 in good time and make inductance driver module 31 and power supply module 100, charge-discharge modules 33 and this control module 32 be off state, avoid the driver module mains switch 315 more how subsequent use electric power of consumption and cause control module 32 power shortages.
Therefore; Compared to existing power supply circuit; The present invention is under the state that power supply module 100 is stopped power supply, and the different circuits of switching capable of using change the direction of load current, so during with normal operation consumes electric power with the inductance driver module 31 that drives load as another power supply source.Change to say it; The present invention need not use the expensive stand-by power supply can be under the situation that power supply module 100 is stopped power supply; Control module 32 non-firm powers of power supply supply control circuit 300 are provided, to prolong the time that control module 32 is preserved the reference data that it was write down.
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 (16)
1. a power supply supply control circuit for being electrically connected at a power supply module, so as to load current to a load inductance is provided, is characterized in that, this power supply supply control circuit comprises:
One inductance driver module has one first end points and one second end points, a hot end of this first end points electrically connect to this power supply module, and this second end points electrically connect to an earth terminal, and this inductance driver module also comprises:
One inductive circuit, from one the 3rd end points, this load inductance of electrically connect and one the 4th end points in regular turn;
One first loop, this first end points the 3rd end points of electrically connect one first switch to this inductive circuit in regular turn certainly, and via the 4th end points of this inductive circuit, electrically connect one second switch and this second end points in regular turn; And
One second loop, this first end points the 4th end points of electrically connect 1 the 3rd switch to this inductive circuit in regular turn certainly, and via the 3rd end points of this inductive circuit, electrically connect 1 the 4th switch and this second end points in regular turn; And
One control module is electrically connected at this hot end, this earth terminal and this inductance driver module;
Wherein, under one first powering mode, this first switch and this second switch are opened and are made this first loop conducting, this load current flow to this earth terminal along this first loop via this second end points from this first end points; Under this first powering mode; When this control module is sent switching signal to this inductance driver module; This first switch and this second switch is promptly closed and this first loop is closed; And the 3rd switch and the 4th switch are promptly opened and are made this second loop conducting, and under an inertia of current effect of this load inductance, this load current flow to this hot end along this second loop via this first end points from this second end points.
2. power supply supply control circuit according to claim 1 is characterized in that this first switch is one of them of metal-oxide semiconductor and relay.
3. power supply supply control circuit according to claim 1 is characterized in that this second switch is one of them of metal-oxide semiconductor and relay.
4. power supply supply control circuit according to claim 1 is characterized in that the 3rd switch is one of them of metal-oxide semiconductor and relay.
5. power supply supply control circuit according to claim 1 is characterized in that the 4th switch is one of them of metal-oxide semiconductor and relay.
6. power supply supply control circuit according to claim 1 is characterized in that this control module is for being electrically connected at this first switch, this second switch, the 3rd switch and the 4th switch.
7. power supply supply control circuit according to claim 1; It is characterized in that; This power supply supply control circuit has a charge-discharge modules; This charge-discharge modules is electrically connected between this hot end and this earth terminal, and parallelly connected with this power supply module, this inductance driver module and this control module.
8. power supply supply control circuit according to claim 7 is characterized in that this charge-discharge modules is an electric capacity.
9. power supply supply control circuit according to claim 1; It is characterized in that; This control module has a voltage comparison unit, and preset one first reference voltage level of this voltage comparison unit, so as to relatively magnitude of voltage and this first reference voltage level of this hot end.
10. power supply supply control circuit according to claim 9 is characterized in that when the magnitude of voltage of this hot end was lower than this first reference voltage level, this control module was sent this switching signal to this inductance driver module.
11. power supply supply control circuit according to claim 9 is characterized in that when the magnitude of voltage of this hot end was higher than this first reference voltage level, this control module was sent this switching signal to this inductance driver module.
12. power supply supply control circuit according to claim 1; It is characterized in that; This power supply supply control circuit has a driver module mains switch; This driver module mains switch is electrically connected between this hot end and this inductance driver module, and this driver module mains switch is and this control module electrically connect.
13. power supply supply control circuit according to claim 12 is characterized in that this driver module mains switch is one of them of metal-oxide semiconductor and relay.
14. power supply supply control circuit according to claim 12; It is characterized in that; This control module has a voltage comparison unit, and preset one second reference voltage level of this voltage comparison unit, so as to relatively magnitude of voltage and this second reference voltage level of this hot end.
15. power supply supply control circuit according to claim 14; It is characterized in that; Said power supply module is under the state of stopping power supply, and when the magnitude of voltage of this hot end was lower than this second reference voltage level, this control module was sent a power switch signal to this driver module mains switch; So as to switching this driver module mains switch, and make this inductance driver module and this power supply module and this control module be off state.
16. power supply supply control circuit according to claim 14; It is characterized in that; Said power supply module is under the state of stopping power supply, and when the magnitude of voltage of this hot end was higher than this second reference voltage level, this control module was sent a power switch signal to this driver module mains switch; So as to switching this driver module mains switch, and make this inductance driver module and this power supply module and this control module be off state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910151199 CN101986511B (en) | 2009-07-29 | 2009-07-29 | Power supply control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910151199 CN101986511B (en) | 2009-07-29 | 2009-07-29 | Power supply control circuit |
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| Publication Number | Publication Date |
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| CN101986511A CN101986511A (en) | 2011-03-16 |
| CN101986511B true CN101986511B (en) | 2012-12-05 |
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| CN 200910151199 Active CN101986511B (en) | 2009-07-29 | 2009-07-29 | Power supply control circuit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181380B (en) * | 2013-05-23 | 2017-03-01 | 远翔科技股份有限公司 | Underloading current detecting system |
| CN105958631B (en) * | 2016-06-16 | 2018-08-03 | 苏州微控智芯半导体科技有限公司 | A kind of power supply switch circuit and signal transfer method using comparator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101222176A (en) * | 2008-01-10 | 2008-07-16 | 晨星半导体股份有限公司 | Direct-current power supply converting circuit and mode switching method |
| CN101447691A (en) * | 2007-11-27 | 2009-06-03 | 深圳迈瑞生物医疗电子股份有限公司 | Commutation circuit of external power supply and battery and control method thereof |
| CN101567627A (en) * | 2008-04-21 | 2009-10-28 | 英业达股份有限公司 | Power supply module |
-
2009
- 2009-07-29 CN CN 200910151199 patent/CN101986511B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447691A (en) * | 2007-11-27 | 2009-06-03 | 深圳迈瑞生物医疗电子股份有限公司 | Commutation circuit of external power supply and battery and control method thereof |
| CN101222176A (en) * | 2008-01-10 | 2008-07-16 | 晨星半导体股份有限公司 | Direct-current power supply converting circuit and mode switching method |
| CN101567627A (en) * | 2008-04-21 | 2009-10-28 | 英业达股份有限公司 | Power supply module |
Non-Patent Citations (1)
| Title |
|---|
| JP平8-87338A 1996.04.02 |
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Effective date of registration: 20180821 Address after: 1, 7 yuan, 2 yuan 1 Street, Hsinchu, Taiwan, China Patentee after: Advanced Analog Technology, Inc. Address before: Hsinchu County, Taiwan, China Patentee before: Yuanxiang Technology Co., Ltd. |
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