CN111984103A - Power supply control circuit and electronic device using same - Google Patents
Power supply control circuit and electronic device using same Download PDFInfo
- Publication number
- CN111984103A CN111984103A CN201910426148.4A CN201910426148A CN111984103A CN 111984103 A CN111984103 A CN 111984103A CN 201910426148 A CN201910426148 A CN 201910426148A CN 111984103 A CN111984103 A CN 111984103A
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- power
- module
- power supply
- electrically connected
- electronic switch
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- 239000003990 capacitor Substances 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000005669 field effect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 230000006266 hibernation Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000007958 sleep Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3287—Power saving characterised by the action undertaken by switching off individual functional units in the computer system
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- Power Sources (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention provides an electronic device which comprises a power supply control circuit and a wireless module. The power supply control circuit comprises a power supply module, and the power supply module is used for supplying power to the wireless module. The power supply control circuit further comprises a south bridge chip, a connector and a control module. The south bridge chip is used for outputting corresponding state signals according to different states of the electronic device. The connector is used for electrically connecting the wireless module. The control module is electrically connected between the south bridge chip and the power module, and is used for receiving the state signal when the wireless module electrically connected with the connector is the first electronic element, and outputting a corresponding control signal to the power module according to the state signal so as to control the power module to supply power or stop supplying power to the first electronic element. In this way, power consumption will be reduced.
Description
Technical Field
The invention relates to a power supply control circuit and an electronic device using the same.
Background
With the continuous update of computer technologies, many computers are provided with wireless fidelity (WIFI) or connectivity integration architecture (CNVI) to implement the function of connecting to the wireless network, and the computers need to supply power to the WIFI card or the CNVI card during work.
However, the computer system includes a plurality of operating states, which are a normal operating state (S0 state), a sleep state (S3 state), a hibernation state (S4 state), and an off state (S5 state), and when the computer system is in the sleep state, the hibernation state, and the off state, power is not required to be supplied to the WIFI card, which is not favorable for saving power of the system.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a power supply control circuit capable of reducing power consumption and an electronic device using the power supply control circuit.
A power supply control circuit is applied to an electronic device and comprises a power supply module, wherein the power supply module is used for supplying power to a first electronic element or a second electronic element, and the power supply control circuit further comprises:
the south bridge chip is used for outputting corresponding state signals according to different states of the electronic device;
a connector for selectively electrically connecting the first electronic component or the second electronic component;
the control module is electrically connected between the south bridge chip and the power module and used for receiving the state signal when the connector is electrically connected with the first electronic element and outputting a corresponding control signal to the power module according to the state signal so as to control the power module to supply power or stop supplying power to the first electronic element.
Further, when the electronic device is in a first state, the control module outputs a high-level control signal to the power supply module to control the power supply module to supply power to the first electronic element; when the electronic device is in a second state, the control module outputs a low-level control signal to the power module to control the power module to stop supplying power to the first electronic element.
Further, when the connector is electrically connected to the second electronic component, the connector disconnects the south bridge chip from the control module, and the control module outputs a high-level control signal to the power module, so that the power module supplies power to the second electronic component.
Furthermore, the power supply control circuit further comprises a super input/output module, the super input/output module is electrically connected with the control module, and the super input/output module is used for outputting a switching signal to the control module so as to switch on or off the connection between the control module and the power module.
Further, the control module includes a first electronic switch, a first resistor, a second resistor and a third resistor, a first end of the first electronic switch is grounded through the first resistor, the first end of the first electronic switch is further electrically connected to the detection pin of the connector, a second end of the first electronic switch is electrically connected to the signal output pin of the south bridge chip, a second end of the first electronic switch is further electrically connected to a power supply through the second resistor, a third end of the first electronic switch is electrically connected to the power supply through the third resistor, the third end of the first electronic switch is electrically connected to the power supply module through the third resistor, and the third end of the first electronic switch is further electrically connected to the power supply module.
Furthermore, the control module further comprises a second electronic switch, a first end of the second electronic switch is electrically connected with the signal output pin of the super input/output module, a second end of the second electronic switch is grounded, and a third end of the second electronic switch is electrically connected to a third end of the first electronic switch.
Furthermore, the power module includes a power converter, a fourth resistor, a fifth resistor, a first capacitor and a second capacitor, an enable pin of the power converter is electrically connected to the third terminal of the first electronic switch, a power input pin of the power converter is electrically connected to the power supply, the power input pin of the power converter is also electrically connected to a power output pin of the power converter through the fourth resistor, the power output pin of the power converter is electrically connected to the power pin of the connector, and the power output pin of the power converter is also grounded through the first capacitor and the second capacitor, respectively.
Furthermore, the first electronic switch and the second electronic switch are both N-channel enhancement type field effect transistors, the first end, the second end and the third end of the first electronic switch respectively correspond to the gate, the source and the drain of the N-channel enhancement type field effect transistor, and the first end, the second end and the third end of the second electronic switch respectively correspond to the gate, the source and the drain of the N-channel enhancement type field effect transistor.
Further, the first electronic component is a wireless network card, and the second electronic component is a connectivity integrated structure card.
An electronic device comprises a wireless module and the power supply control circuit, wherein the power supply control circuit is used for supplying power to the wireless module.
The power supply control circuit and the electronic device applying the power supply control circuit receive the state signal output by the south bridge chip through the control module when the connector is electrically connected with the first electronic element, and correspondingly control the power supply module to supply power to the first electronic element or stop supplying power according to the state signal. Thus, energy consumption will be reduced.
Drawings
FIG. 1 is a block diagram of an electronic device according to a preferred embodiment of the present invention.
Fig. 2 is a block diagram of a preferred embodiment of the power control circuit of fig. 1.
Fig. 3 is a circuit diagram of a preferred embodiment of the power supply control circuit of fig. 1.
Description of the main elements
Power supply control circuit 10
South bridge chip 11
Super input/output module 15
Electronic switches Q1, Q2
Power supply V
Resistors R1, R2, R3, R4 and R5
Capacitors C1, C2 and C3
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the power supply control circuit and the electronic device using the power supply control circuit of the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1, a preferred embodiment of the invention provides an electronic device 100, where the electronic device 100 includes a power supply control circuit 10 and a wireless module 20. The power supply control circuit 10 is configured to supply power to the wireless module 20.
In this embodiment, the electronic device 100 may be a computer. The wireless module 20 may be a first electronic component (not shown) or a second electronic component (not shown), wherein the first electronic component may be a wireless fidelity (WIFI) card, and the second electronic component may be a connectivity integration architecture (CNVI) card.
Referring to fig. 2, the power supply control circuit 10 includes a south bridge chip 11, a control module 12, a power module 13, a connector 14, and a super input/output module 15.
The south bridge chip 11 is electrically connected to the control module 12. The control module 12 is electrically connected to the connector 14. The power module 13 is electrically connected between the control module 12 and the connector 14. The connector 14 is used for electrically connecting the wireless module 20. The super input/output module 15 is electrically connected to the control module 12, and the super input/output module 15 is also electrically connected to the connector 14.
The south bridge chip 11 is configured to output corresponding status signals according to different statuses of the electronic device 100. The connector 14 is used to selectively electrically connect the first electronic component or the second electronic component.
When the connector 14 is electrically connected to the first electronic component, the control module 12 is configured to receive the status signal, and output a corresponding control signal to the power module 13 according to the status signal, so as to control the power module 13 to supply power to the first electronic component or stop supplying power.
In a first state (e.g., S0 state of the computer), the south bridge chip 11 outputs a high-level status signal to the control module 12 to control the control module 12 to output a high-level control signal to the power module 13, so as to control the power module 13 to supply power to the first electronic component;
in a second state (e.g., S3 state, S4 state, or S5 state) the south bridge chip 11 outputs a low-level status signal to the control module 12 to control the control module 12 to output a low-level control signal to the power module 13, so as to control the power module 13 to stop supplying power to the first electronic component.
Further, when the connector 14 is electrically connected to the second electronic component, the connector 14 disconnects the south bridge chip 11 from the control module 12. The control module 12 will output a high-level control signal to the power module 13, so that the power module 13 supplies power to the second electronic component.
In this embodiment, the super input/output module 15 is configured to output a switching signal to the control module 12 to turn on or off the connection between the control module 12 and the power module 13.
Referring to fig. 3, in a preferred embodiment, the south bridge chip 11 may include a signal output pin SLP. The control module 12 may include two electronic switches Q1, Q2, resistors R1-R3, and a capacitor C1. The power module 13 may include a power converter 131, resistors R4-R5, and capacitors C2-C3, wherein the power converter 131 includes a power input pin VIN, an enable pin EN, a power output pin VOUT, an over-current pin FLG, and a ground pin GND. The connector 14 may include a power pin VCC and a DETECT pin DETECT. The super input output module 15 comprises a signal output pin CTRL.
The first terminal of the electronic switch Q1 is grounded through the resistor R1, and the first terminal of the electronic switch Q1 is also electrically connected to the DETECT pin DETECT of the connector 14. The second terminal of the electronic switch Q1 is electrically connected to the signal output pin SLP of the south bridge chip 11, and the second terminal of the electronic switch Q1 is also electrically connected to the power supply V through the resistor R2. The third terminal of the electronic switch Q1 is electrically connected to the power supply V through the resistor R3, and the power supply V is grounded through the capacitor C1. The third terminal of the electronic switch Q1 is also electrically connected to the third terminal of the electronic switch Q2.
A first terminal of the electronic switch Q2 is electrically connected to the signal output pin CTRL of the super input/output module 15. The second terminal of the electronic switch Q2 is connected to ground. The third terminal of the electronic switch Q2 is electrically connected to the enable pin EN of the power converter 131. The power input pin VIN of the power converter 131 is electrically connected to the power source V. The power input pin VIN is also electrically connected to the power output pin VOUT through the resistor R4. The power output pin VOUT is electrically connected to a power pin VCC of the connector 14, and the power output pin VOUT is also grounded through the capacitor C2 and the capacitor C3, respectively. The over-current pin FLG is electrically connected to the power supply V through the resistor R5. The ground pin GND is grounded.
In a preferred embodiment, the electronic switches Q1, Q2 are N-channel enhancement mode fets. The first terminal, the second terminal and the third terminal of the electronic switch Q1 correspond to the gate, the source and the drain of the N-channel enhancement mode fet, respectively. The first terminal, the second terminal and the third terminal of the electronic switch Q2 correspond to the gate, the source and the drain of the N-channel enhancement mode fet, respectively.
In this embodiment, the power supply V is 3.3 volts, and the power module 13 can output a voltage of 3.3 volts.
The operation of the power supply control circuit 10 according to the present invention will be described in detail.
In operation, when the super input/output module 15 outputs a switching signal with a high level through the signal output pin CTRL, the electronic switch Q2 is turned on, the enable pin EN of the power converter 131 is grounded, and the control signal output by the control module 12 cannot be transmitted to the enable pin EN of the power module 13. At this time, the power converter 131 will not supply power to the power pin VCC of the connector 14 through the power output pin VOUT.
When the super input output module 15 outputs a switching signal having a low level through the signal output pin CTRL, the electronic switch Q2 is turned off. The control module 12 will output a control signal to the enable pin EN of the power module 13.
At this time, when the connector 14 is plugged into a CNVI card, the connector 14 sends a detection signal with a low level through the detection pin DETECT, the electronic switch Q1 is turned off, and the control module 12 does not receive the status signal output by the south bridge chip 11, that is, in any status, the control module 12 can output a control signal with a high level to the enable pin EN through the power supply V to control the power converter 131 to output a voltage to the power supply pin VCC of the connector through the power supply output pin VOUT, so as to supply power to the CNVI card plugged into the connector 14.
At this time, when the connector 14 is plugged with a WIFI card, the connector 14 sends a detection signal with a high level through the detection pin DETECT, the electronic switch Q1 is turned on, and in the S0 state, the south bridge chip 11 outputs a state signal with a high level through the signal output pin SLP, so that the control module 12 outputs a control signal with a high level to the enable pin EN, and the power converter 131 outputs a voltage to the power pin VCC of the connector through the power output pin VOUT to supply power to the WIFI card plugged in the connector 14. In the S3 state, the S4 state, or the S5 state, the south bridge chip 11 outputs a state signal with a low level through the signal output pin SLP, so that the control module 12 outputs a control signal with a low level to the enable pin EN, and the power converter 131 stops outputting a voltage to the power pin VCC of the connector through the power output pin VOUT, thereby stopping supplying power to the WIFI card plugged in the connector 14.
The electronic device 100 receives the status signal output by the south bridge chip 11 when the connector 14 is electrically connected to the first electronic component through the control module 12, and correspondingly controls the power module 13 to supply power to the first electronic component or stop supplying power according to the status signal. Thus, energy consumption will be reduced.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited, although the present invention is described in detail with reference to the preferred embodiments.
It will be understood by those skilled in the art that various modifications and equivalent arrangements can be made without departing from the spirit and scope of the present invention.
Moreover, based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without any creative effort will fall within the protection scope of the present invention.
Claims (10)
1. A power supply control circuit is applied to an electronic device and comprises a power module, wherein the power module is used for supplying power to a first electronic element or a second electronic element, and the power supply control circuit is characterized by further comprising:
the south bridge chip is used for outputting corresponding state signals according to different states of the electronic device;
a connector for selectively electrically connecting the first electronic component or the second electronic component;
the control module is electrically connected between the south bridge chip and the power module and used for receiving the state signal when the connector is electrically connected with the first electronic element and outputting a corresponding control signal to the power module according to the state signal so as to control the power module to supply power or stop supplying power to the first electronic element.
2. The power supply control circuit according to claim 1, wherein when the electronic device is in a first state, the control module outputs a high-level control signal to the power supply module to control the power supply module to supply power to the first electronic component; when the electronic device is in a second state, the control module outputs a low-level control signal to the power module to control the power module to stop supplying power to the first electronic element.
3. The power supply control circuit of claim 1, wherein when the connector is electrically connected to the second electronic component, the connector disconnects the south bridge chip from the control module, and the control module outputs a high-level control signal to the power module, so that the power module supplies power to the second electronic component.
4. The power supply control circuit of claim 1, further comprising a super input output module, wherein the super input output module is electrically connected to the control module, and the super input output module is configured to output a switching signal to the control module to turn on or off the connection between the control module and the power module.
5. The power supply control circuit according to claim 4, wherein the control module comprises a first electronic switch, a first resistor, a second resistor and a third resistor, a first end of the first electronic switch is grounded through the first resistor, a first end of the first electronic switch is further electrically connected to a detection pin of the connector, a second end of the first electronic switch is electrically connected to a signal output pin of the south bridge chip, a second end of the first electronic switch is further electrically connected to a power supply through the second resistor, a third end of the first electronic switch is electrically connected to the power supply through the third resistor, a third end of the first electronic switch is electrically connected to the power supply module through the third resistor, and a third end of the first electronic switch is further electrically connected to the power supply module.
6. The power supply control circuit of claim 5 wherein the control module further comprises a second electronic switch, a first terminal of the second electronic switch is electrically connected to the signal output pin of the super input output module, a second terminal of the second electronic switch is grounded, and a third terminal of the second electronic switch is electrically connected to a third terminal of the first electronic switch.
7. The power supply control circuit of claim 6, wherein the power module comprises a power converter, a fourth resistor, a fifth resistor, a first capacitor and a second capacitor, an enable pin of the power converter is electrically connected to the third terminal of the first electronic switch, a power input pin of the power converter is electrically connected to the power supply, the power input pin of the power converter is further electrically connected to a power output pin of the power converter through the fourth resistor, the power output pin of the power converter is electrically connected to the power pin of the connector, and the power output pin of the power converter is further grounded through the first capacitor and the second capacitor, respectively.
8. The power supply control circuit of claim 6 wherein the first electronic switch and the second electronic switch are N-channel enhancement mode fets, the first terminal, the second terminal, and the third terminal of the first electronic switch correspond to the gate, the source, and the drain of the N-channel enhancement mode fets, respectively, and the first terminal, the second terminal, and the third terminal of the second electronic switch correspond to the gate, the source, and the drain of the N-channel enhancement mode fets, respectively.
9. The power supply control circuit of claim 1, wherein the first electronic component is a wireless network card and the second electronic component is a connectivity integrated configuration card.
10. An electronic device comprising a wireless module and the power supply control circuit of any one of claims 1-9, wherein the power supply control circuit is configured to supply power to the wireless module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910426148.4A CN111984103B (en) | 2019-05-21 | 2019-05-21 | Power supply control circuit and electronic device applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910426148.4A CN111984103B (en) | 2019-05-21 | 2019-05-21 | Power supply control circuit and electronic device applying same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111984103A true CN111984103A (en) | 2020-11-24 |
| CN111984103B CN111984103B (en) | 2023-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910426148.4A Active CN111984103B (en) | 2019-05-21 | 2019-05-21 | Power supply control circuit and electronic device applying same |
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| Country | Link |
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| CN (1) | CN111984103B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751534A (en) * | 2008-12-16 | 2010-06-23 | 联想（新加坡）私人有限公司 | Computers having a biometric authentication device |
| CN103208822A (en) * | 2012-01-12 | 2013-07-17 | 鸿富锦精密工业（深圳）有限公司 | Universal serial bus (USB) charging control circuit |
| CN104252220A (en) * | 2013-06-27 | 2014-12-31 | 鸿富锦精密工业（深圳）有限公司 | Energy-saving circuit for mainboard |
| CN105589542A (en) * | 2014-11-13 | 2016-05-18 | 鸿富锦精密工业(武汉)有限公司 | Interface power supply circuit |
-
2019
- 2019-05-21 CN CN201910426148.4A patent/CN111984103B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751534A (en) * | 2008-12-16 | 2010-06-23 | 联想（新加坡）私人有限公司 | Computers having a biometric authentication device |
| CN103208822A (en) * | 2012-01-12 | 2013-07-17 | 鸿富锦精密工业（深圳）有限公司 | Universal serial bus (USB) charging control circuit |
| CN104252220A (en) * | 2013-06-27 | 2014-12-31 | 鸿富锦精密工业（深圳）有限公司 | Energy-saving circuit for mainboard |
| CN105589542A (en) * | 2014-11-13 | 2016-05-18 | 鸿富锦精密工业(武汉)有限公司 | Interface power supply circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111984103B (en) | 2023-12-05 |
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