CN113467335A - Power supply control circuit, power supply control device and server - Google Patents
Power supply control circuit, power supply control device and server Download PDFInfo
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- CN113467335A CN113467335A CN202110873645.6A CN202110873645A CN113467335A CN 113467335 A CN113467335 A CN 113467335A CN 202110873645 A CN202110873645 A CN 202110873645A CN 113467335 A CN113467335 A CN 113467335A
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- 238000012360 testing method Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
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- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
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Abstract
The invention discloses a power supply control circuit, comprising: a controller including a first output terminal and a second output terminal; a first voltage receiving terminal; one end of the first voltage-dividing resistor is connected with the first voltage receiving end; the base stage of the first triode is connected with the other end of the first voltage-dividing resistor; the base stage of the second triode is connected with the second output end; the base stage of the third triode is connected with the first output end; the second voltage receiving end is connected with the transmitting stage of the second triode; the collector of the first triode, the collector of the second triode and the emitter of the third triode are connected with the output end; and one end of the second divider resistor is connected with the collector of the third triode, and the other end of the second divider resistor is grounded. The invention further provides a power supply control device and a server. The scheme provided by the invention can effectively reduce the labor cost and the time cost.
Description
Technical Field
The invention relates to the field of power supply control devices, in particular to a power supply control circuit, a power supply control device and a server.
Background
Along with the increasing power requirements of main components such as a CPU (central processing unit), an internal memory, an MCU (micro control unit), a PCH (channel bus) and the like on a mainboard, power supply schemes are divided into more and more thin, and more power supply schemes are designed compared with the power supply schemes of the previous generations of mainboards; for the single-group power supply scheme test, the resistance reserved for disconnecting the original CPLD control and the resistance reserved by hardware electrification are increased, and the cost of the power supply scheme test is also increased along with the water rising ship height.
At the initial evaluation stage, in a power supply scheme for controlling electrification through a CPLD (complex programmable logic device) time sequence, a 0 ohm resistor needs to be connected in series in a circuit so as to be conveniently used when a single group of tests are needed, the existing technical scheme is quite simple and has universality, and basically, the existing technical scheme cannot happen accidentally as long as no empty welding situation occurs or resistance damage is caused by overheating during manual loading; or through a CPLD engineer, a sub-bit which can start all power supply schemes only by electrifying regardless of the time sequence is designed.
However, 0 ohm resistor is connected in series in the circuit, the board card needs to be welded again by manpower, a situation of empty welding can occur during welding or resistance damage caused by overheating can occur, so that the safety of the power supply scheme is affected, if the EN PIN foot of the power supply scheme generates overvoltage, the damage of the power supply IC can be caused, if the problem can be directly found out in the appearance, the problem is quite difficult to find out, and the problem can not be found out in the power supply scheme IC, so that the test report can not be completed smoothly, and the supply time interval is affected.
Disclosure of Invention
In view of the above, in order to overcome at least one aspect of the above problems, an embodiment of the present invention provides a power supply control circuit, including:
a controller including a first output terminal and a second output terminal;
a first voltage receiving terminal;
one end of the first voltage-dividing resistor is connected with a first voltage receiving end;
the base stage of the first triode is connected with the other end of the first voltage-dividing resistor;
the base stage of the second triode is connected with the second output end;
the base stage of the third triode is connected with the first output end;
the second voltage receiving end is connected with the transmitting stage of the second triode;
the collector of the first triode, the collector of the second triode and the emitter of the third triode are connected with the output end;
and one end of the second voltage-dividing resistor is connected with the collector of the third triode, and the other end of the second voltage-dividing resistor is grounded.
In some embodiments, the controller is configured to:
in response to receiving a first signal, outputting a first control instruction for conducting the first triode and the third triode through a first output end, and outputting a second control instruction for closing the second triode through a second output end;
and responding to the received second signal, outputting a third control instruction for closing the first triode and the third triode through the first output end, and outputting a fourth control instruction for conducting the second triode through the second output end.
In some embodiments, the output end outputs a voltage received by the second voltage receiving end when the first triode and the third triode are turned off and the second triode is turned on;
the output end outputs a voltage obtained by dividing the voltage received by the first voltage receiving end by the first voltage dividing resistor and the second voltage dividing resistor when the first triode and the third triode are conducted and the second triode is closed.
In some embodiments, further comprising:
and one end of the third resistor is connected with the second voltage input end, and the other end of the third resistor is connected with the emitter of the second triode.
In some embodiments, further comprising:
the resistance value of the first divider resistor is smaller than that of the second divider resistor;
the resistance value of the third resistor is 0.
Based on the same inventive concept, the embodiment of the invention also provides a power supply control device, which comprises a first control pin, a second control pin, a third pin, a fourth pin, a fifth pin, a sixth pin and a power supply control circuit;
the power supply control circuit includes:
a controller including a first output terminal and a second output terminal; the controller is connected with the first control pin and the second control pin;
a first voltage input terminal connected with a third pin;
the first voltage dividing resistor is connected with a first voltage input end at one end;
the base stage of the first triode is connected with the other end of the first voltage-dividing resistor;
the base stage of the second triode is connected with the second output end;
the base stage of the third triode is connected with the first output end;
the second voltage input end is connected with the emitter of the second triode, and the first voltage input end is connected with a fourth pin;
the collector of the first triode, the collector of the second triode and the emitter of the third triode are all connected with the output end, and the output end is connected with a fifth pin;
one end of the second voltage-dividing resistor is connected with the collector of the third triode;
and the grounding end is connected with the other end of the second voltage-dividing resistor and is connected with the sixth pin.
In some embodiments, the controller is configured to:
in response to receiving a first signal, outputting a first control instruction for conducting the first triode and the third triode through a first output end, and outputting a second control instruction for closing the second triode through a second output end;
and responding to the received second signal, outputting a third control instruction for closing the first triode and the third triode through the first output end, and outputting a fourth control instruction for conducting the second triode through the second output end.
In some embodiments, the output end outputs the voltage input by the second voltage input end when the first triode and the third triode are closed and the second triode is conducted;
and the voltage output by the output end when the first triode and the third triode are conducted and the second triode is closed is the voltage obtained by dividing the voltage input by the first voltage input end through the first voltage dividing resistor.
In some embodiments, further comprising:
and one end of the third resistor is connected with the second voltage input end, and the other end of the third resistor is connected with the emitter of the second triode.
Based on the same inventive concept, an embodiment of the present invention further provides a server, including the power supply control circuit according to any of the above embodiments.
The invention has one of the following beneficial technical effects: the scheme provided by the embodiment of the invention can realize larger efficiency improvement when the system is in light load, and is beneficial to the energy-saving design of the system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
Fig. 1 is a schematic diagram of a power supply control circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
According to an aspect of the present invention, the embodiment of the present invention provides a power supply control circuit, as shown in fig. 1, including a controller 7, a first voltage receiving terminal 31, a first voltage dividing resistor R1, a first transistor Q1, a second transistor Q2, a third transistor Q3, a second voltage receiving terminal 41, an output terminal 51, and a second voltage dividing resistor R2.
The scheme provided by the invention can effectively reduce the labor cost and the time cost and reduce the damage to the board card.
In some embodiments, the controller 7 shown in fig. 1 may include a first output terminal 71 and a second output terminal 72, wherein one end of a first voltage dividing resistor R1 is connected to the first voltage receiving terminal 31, a base of the first triode Q1 is connected to the other end of the first voltage dividing resistor R1, a base of the second triode Q2 is connected to the second output terminal, a base of the third triode Q3 is connected to the first output terminal, the second voltage receiving terminal 41 is connected to an emitting terminal of the second triode Q2, a collector of the first triode Q1, a collector of the second triode Q2, and an emitting terminal of the third triode Q3 are connected to the output terminals, and one end of the second voltage dividing resistor R2 is connected to the collector of the third triode Q3 and the other end thereof is grounded.
In some embodiments, the controller 7 is configured to:
in response to receiving the first signal, outputting a first control command for turning on the first transistor Q1 and the third transistor through the first output terminal 71, and outputting a second control command for turning off the second transistor Q2 through the second output terminal 72;
in response to receiving the second signal, a third control command for turning off the first transistor Q1 and the third transistor is output through the first output terminal 71, and a fourth control command for turning on the second transistor Q2 is output through the second output terminal 72.
Specifically, as shown in fig. 1, the controller 7 may have two pins for controlling hardware or software, when the HW pin level rises, that is, when the HW pin level rises, the first transistor Q1 and the third transistor Q2 are turned on and the second transistor Q2 is turned off, at this time, the circuit is connected such that the voltage received by the first voltage receiving terminal 31 passes through the first voltage dividing resistor R1 and the second voltage dividing resistor R2 and then is grounded, thereby achieving hardware startup; on the contrary, when the FW pin is raised by the voltage level, the second transistor Q2 is turned on, and the first transistor Q1 and the third transistor are turned off, and at this time, the circuit is connected such that the voltage received by the second voltage receiving terminal 41 passes through the second transistor and is then output, thereby achieving the software start.
It should be noted that the voltage received by the first voltage receiving terminal 31 is greater than the voltage received by the second voltage receiving terminal 41.
In some embodiments, the output terminal outputs the voltage received by the second voltage receiving terminal 41 when the first transistor Q1 and the third transistor Q2 are turned off and the second transistor Q2 is turned on;
the voltage output by the output terminal when the first transistor Q1 and the third transistor Q2 are turned on and the second transistor Q2 is turned off is the voltage obtained by dividing the voltage received by the first voltage receiving terminal 31 by the first voltage dividing resistor R1 and the second voltage dividing resistor R2.
In some embodiments, further comprising:
and one end of the third resistor R3 is connected with the second voltage input end, and the other end of the third resistor R3 is connected with the emitter of the second triode Q2.
In some embodiments, further comprising:
the resistance value of the first divider resistor R1 is smaller than that of the second divider resistor R2;
the resistance value of the third resistor is 0.
The scheme provided by the invention can effectively reduce the labor cost and the time cost and reduce the damage to the board card.
Based on the same inventive concept, an embodiment of the present invention further provides a power supply control device, as shown in fig. 1, including a first control pin 1, a second control pin 2, a third pin 3, a fourth pin 4, a fifth pin 5, a sixth pin 6, and a power supply control circuit;
the power supply control circuit includes:
a controller 7 including a first output terminal and a second output terminal; the controller 7 is connected with the first control pin and the second control pin;
a first voltage input terminal connected with a third pin;
a first voltage dividing resistor R1, wherein one end of the first voltage dividing resistor R1 is connected with a first voltage input end;
a first triode Q1, wherein the base stage of the first triode Q1 is connected with the other end of the first voltage-dividing resistor R1;
a second transistor Q2, a base of the second transistor Q2 being connected to the second output;
a third triode Q3, wherein the base stage of the third triode is connected with the first output end;
the second voltage input end is connected with the emitter of the second triode, and the first voltage input end is connected with a fourth pin;
the collector of the first triode Q1, the collector of the second triode and the emitter of the third triode Q3 are all connected with the output end, and the output end is connected with a fifth pin;
a second voltage-dividing resistor R2, wherein one end of the second voltage-dividing resistor R2 is connected to the collector of the third transistor Q3;
and the ground terminal is connected with the other end of the second voltage-dividing resistor R2, and is connected with the sixth pin.
The device provided by the invention has 6 pins, the pin functions of which are respectively an input end for providing the IC to act, two pins for controlling and using hardware or software, a pin for providing an FW _ EN signal at a connecting plate end, a pin for providing a ground resistance to the ground, and finally an output pin for providing a signal to start the power supply scheme IC.
In some embodiments, the controller 7 is configured to:
in response to receiving the first signal, outputting a first control instruction for turning on the first triode Q1 and the third triode and outputting a second control instruction for turning off the second triode Q2 through a first output end;
in response to receiving the second signal, a third control instruction for turning off the first transistor Q1 and the third transistor is output through the first output terminal, and a fourth control instruction for turning on the second transistor Q2 is output through the second output terminal.
In some embodiments, the output terminal outputs the voltage input by the second voltage input terminal when the first transistor Q1 and the third transistor Q2 are turned off and the second transistor Q2 is turned on;
the voltage output by the output terminal when the first transistor Q1 and the third transistor Q2 are turned on and the second transistor Q2 is turned off is the voltage obtained by dividing the voltage input by the first voltage input terminal by the first voltage dividing resistor R1.
In some embodiments, further comprising:
and one end of the third resistor is connected with the second voltage input end, and the other end of the third resistor is connected with the emitter of the second triode Q2.
The embodiment provided by the invention integrates the power supply control circuit into the IC, so that a novel control system and triodes are added in the IC for integration, the volume is reduced, the scattered assemblies are replaced, the control system has the function of turning on the triodes, an external switch is added, the switch is intentionally kept outside and is not added in the IC, the power supply scheme of the board card is numerous, if the switch is designed in the IC, the requirement of parallel connection of multiple groups cannot be met, and each IC can be simply connected in parallel through the external switch, so that the aim of conveniently adjusting one IC and controlling the multiple groups can be achieved.
Based on the same inventive concept, an embodiment of the present invention further provides a server, including the power supply control circuit according to any of the above embodiments.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
It should be understood that, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly supports the exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.
The numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. A power supply control circuit, comprising:
a controller including a first output terminal and a second output terminal;
a first voltage receiving terminal;
one end of the first voltage-dividing resistor is connected with a first voltage receiving end;
the base stage of the first triode is connected with the other end of the first voltage-dividing resistor;
the base stage of the second triode is connected with the second output end;
the base stage of the third triode is connected with the first output end;
the second voltage receiving end is connected with the transmitting stage of the second triode;
the collector of the first triode, the collector of the second triode and the emitter of the third triode are connected with the output end;
and one end of the second voltage-dividing resistor is connected with the collector of the third triode, and the other end of the second voltage-dividing resistor is grounded.
2. The circuit of claim 1, wherein the controller is configured to:
in response to receiving a first signal, outputting a first control instruction for conducting the first triode and the third triode through a first output end, and outputting a second control instruction for closing the second triode through a second output end;
and responding to the received second signal, outputting a third control instruction for closing the first triode and the third triode through the first output end, and outputting a fourth control instruction for conducting the second triode through the second output end.
3. The circuit of claim 2, wherein the output terminal outputs a voltage received by the second voltage receiving terminal when the first transistor and the third transistor are turned off and the second transistor is turned on;
the output end outputs a voltage obtained by dividing the voltage received by the first voltage receiving end by the first voltage dividing resistor and the second voltage dividing resistor when the first triode and the third triode are conducted and the second triode is closed.
4. The circuit of claim 1, further comprising:
and one end of the third resistor is connected with the second voltage input end, and the other end of the third resistor is connected with the emitter of the second triode.
5. The circuit of claim 4, further comprising:
the resistance value of the first divider resistor is smaller than that of the second divider resistor;
the resistance value of the third resistor is 0.
6. A power supply control device is characterized by comprising a first control pin, a second control pin, a third pin, a fourth pin, a fifth pin, a sixth pin and a power supply control circuit;
the power supply control circuit includes:
a controller including a first output terminal and a second output terminal; the controller is connected with the first control pin and the second control pin;
a first voltage input terminal connected with a third pin;
the first voltage dividing resistor is connected with a first voltage input end at one end;
the base stage of the first triode is connected with the other end of the first voltage-dividing resistor;
the base stage of the second triode is connected with the second output end;
the base stage of the third triode is connected with the first output end;
the second voltage input end is connected with the emitter of the second triode, and the first voltage input end is connected with a fourth pin;
the collector of the first triode, the collector of the second triode and the emitter of the third triode are all connected with the output end, and the output end is connected with a fifth pin;
one end of the second voltage-dividing resistor is connected with the collector of the third triode;
and the grounding end is connected with the other end of the second voltage-dividing resistor and is connected with the sixth pin.
7. The apparatus of claim 6, wherein the controller is configured to:
in response to receiving a first signal, outputting a first control instruction for conducting the first triode and the third triode through a first output end, and outputting a second control instruction for closing the second triode through a second output end;
and responding to the received second signal, outputting a third control instruction for closing the first triode and the third triode through the first output end, and outputting a fourth control instruction for conducting the second triode through the second output end.
8. The apparatus of claim 7, wherein the output terminal outputs the voltage input at the second voltage input terminal when the first transistor and the third transistor are turned off and the second transistor is turned on;
and the voltage output by the output end when the first triode and the third triode are conducted and the second triode is closed is the voltage obtained by dividing the voltage input by the first voltage input end through the first voltage dividing resistor.
9. The apparatus of claim 6, further comprising:
and one end of the third resistor is connected with the second voltage input end, and the other end of the third resistor is connected with the emitter of the second triode.
10. A server, characterized by comprising a power supply control circuit according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110873645.6A CN113467335A (en) | 2021-07-30 | 2021-07-30 | Power supply control circuit, power supply control device and server |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110873645.6A CN113467335A (en) | 2021-07-30 | 2021-07-30 | Power supply control circuit, power supply control device and server |
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| CN113467335A true CN113467335A (en) | 2021-10-01 |
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| CN202110873645.6A Pending CN113467335A (en) | 2021-07-30 | 2021-07-30 | Power supply control circuit, power supply control device and server |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593946A (en) * | 2012-02-21 | 2012-07-18 | 德讯科技股份有限公司 | Dual-power-supply automatic switching circuit based on power MOSFET application |
| CN106451736A (en) * | 2016-11-16 | 2017-02-22 | 江苏林洋能源股份有限公司 | Power switching circuit capable of setting power priority and power switching method |
| CN108879943A (en) * | 2018-07-27 | 2018-11-23 | 烟台艾睿光电科技有限公司 | A kind of power supply switch circuit and electronic equipment |
| CN109474060A (en) * | 2018-12-19 | 2019-03-15 | 电子科技大学中山学院 | Dual-power switching system and switching method |
| CN110718961A (en) * | 2019-11-27 | 2020-01-21 | 成都天马微电子有限公司 | Power supply circuit, control method thereof and display device |
| CN111463894A (en) * | 2020-04-27 | 2020-07-28 | 湖南三一智能控制设备有限公司 | Power supply switching circuit |
| CN112615419A (en) * | 2020-12-18 | 2021-04-06 | 上海微阱电子科技有限公司 | Dual-power automatic switching circuit |
-
2021
- 2021-07-30 CN CN202110873645.6A patent/CN113467335A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593946A (en) * | 2012-02-21 | 2012-07-18 | 德讯科技股份有限公司 | Dual-power-supply automatic switching circuit based on power MOSFET application |
| CN106451736A (en) * | 2016-11-16 | 2017-02-22 | 江苏林洋能源股份有限公司 | Power switching circuit capable of setting power priority and power switching method |
| CN108879943A (en) * | 2018-07-27 | 2018-11-23 | 烟台艾睿光电科技有限公司 | A kind of power supply switch circuit and electronic equipment |
| CN109474060A (en) * | 2018-12-19 | 2019-03-15 | 电子科技大学中山学院 | Dual-power switching system and switching method |
| CN110718961A (en) * | 2019-11-27 | 2020-01-21 | 成都天马微电子有限公司 | Power supply circuit, control method thereof and display device |
| CN111463894A (en) * | 2020-04-27 | 2020-07-28 | 湖南三一智能控制设备有限公司 | Power supply switching circuit |
| CN112615419A (en) * | 2020-12-18 | 2021-04-06 | 上海微阱电子科技有限公司 | Dual-power automatic switching circuit |
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Application publication date: 20211001 |