CN201069548Y - Power switching circuit - Google Patents
Power switching circuit Download PDFInfo
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- CN201069548Y CN201069548Y CNU200720051868XU CN200720051868U CN201069548Y CN 201069548 Y CN201069548 Y CN 201069548Y CN U200720051868X U CNU200720051868X U CN U200720051868XU CN 200720051868 U CN200720051868 U CN 200720051868U CN 201069548 Y CN201069548 Y CN 201069548Y
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- power supply
- switch circuit
- diode
- supply switch
- computer system
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Abstract
A power switch circuit is provided, which is applied in a computer system having the function of hanging up to the memory. The power switch circuit comprises a FET, a first diode and a second diode. The control signal of the computer system hung up to the memory accesses to the gate of the FET, the main power of the computer system accesses to the source of the FET, and the drain of the FET is then connected with the output end of the power switch circuit. The main power and a standby power are also respectively connected with the output end via the first diode and the second diode and the negative electrode of the first diode is electrically connected with that of the second diode. When the computer system enters into the normal working state by hanging up to the memory, the control signal is of high level, and the main power is output to the output end by the FET. By utilizing the simple electronic components to replace the integrated circuit chips, the utility model saves the cost; what's more, compared with the integrated circuit chip, substitutes for the electronic components can be easy ratained, thus having higher application value.
Description
Technical field
The utility model relates to a kind of power supply switch circuit, relates in particular to a kind of power supply switch circuit that is applied to have in the computer system that suspends to memory function.
Background technology
General computer system is provided with power saving function, and present power saving function mainly contains two kinds of STD and STR.STD (Suspend to Disk) suspends to hard disk, and the system that is meant on hard disk, can save the time of restarting with present file maintenance when starting shooting once more when deep-sleep, and at present the STD technology has belonged to superseded type, renewal be the STR technology.STR (Suspend to Ram) suspends to internal memory, promptly when system's deep-sleep with file maintenance in internal memory, restarting original state only needed about 3 seconds.Newer mainboard is all supported this technology at present.
In order to support this function of STD, manyly on the circuit can design switching between primary power (Mainpower) and the power supply of awaiting orders (Standby power) with an integrated circuit (IC) chip, because the technology of internal memory is showing improvement or progress day by day at present, consumption on the memory power supply is also more and more huge, therefore the output power of this integrated circuit (IC) chip also constantly promotes, and price is also more and more high.
Summary of the invention
In view of the above problems, the utility model purpose is to provide a kind of power supply switch circuit, it utilizes some simple electronic components to replace the said integrated circuit chip, economical with materials cost greatly, in addition, those electronic components have higher using value than the easier corresponding substitute product that find of this integrated circuit (IC) chip.
For reaching above-mentioned purpose, the utility model adopts following technical scheme: a kind of power supply switch circuit, be applied in the computer system that tool suspends to memory function, and this power supply switch circuit comprises a field effect transistor and first and second diode; The control signal that suspends to internal memory of this computer system inserts the grid of this field effect transistor, its primary power inserts the source electrode of this field effect transistor, the drain electrode of this field effect transistor then connects the output terminal of this power supply switch circuit, in addition, the power supply of awaiting orders of this primary power and computer system is connected with this first utmost point pipe and the positive pole of diode respectively, and the negative pole of the output terminal of this power supply switch circuit and this first utmost point pipe and diode electrically connects; Just control the switching of this primary power and this power supply of awaiting orders via the level of this control signal.
So, this computer system is in when suspending to internal memory, and above-mentioned control signal is a low level, the not conducting of above-mentioned field effect transistor, and the above-mentioned power supply of awaiting orders is switched to the output terminal of above-mentioned this power supply switch circuit via above-mentioned second diode; This computer system is by suspending to internal memory when entering normal operating conditions, above-mentioned control signal is a high level, this control signal is with this field effect transistor of conducting, and above-mentioned this primary power will output to the output terminal of above-mentioned this power supply switch circuit and then offer within this computer system and deposit via this field effect transistor.
Preferable, this switched system also comprises an inductance, and this inductance is connected between the output terminal of the drain electrode of this field effect transistor and this power supply switch circuit, and this inductance also is connected between the output terminal of above-mentioned first and second diode cathode and this power supply switch circuit.
Preferable, this switched system also comprises an electric capacity, the output terminal of this power supply switch circuit is by the electrical ground connection of this electric capacity.
The circuit that the utility model is formed by simple electronic component comes the integrated circuit (IC) chip of instead of dedicated, not only saved cost, and those electronic components are than the also easier corresponding substitute product that find of this integrated circuit (IC) chip, and this has higher using value to computermaker.
Description of drawings
Fig. 1 is the circuit diagram of the utility model one preferred embodiment.
Embodiment
For describing technology contents of the present utility model, structural attitude in detail, illustrated in detail below in conjunction with embodiment and conjunction with figs..
See also shown in Figure 1, it is the circuit diagram of the utility model one preferred embodiment, the power supply switch circuit of the utility model, be applied in the computer system that tool suspends to memory function, in present embodiment, this power supply switch circuit comprises a field effect transistor 1000, first diode 2100, second diode 2200, one inductance 3000 and an electric capacity 4000, the control signal Control signal that this computer system suspends to internal memory inserts the grid of this field effect transistor 1000, the primary power Main power of this computer system inserts the source electrode of this field effect transistor 1000, and the drain electrode of this field effect transistor 1000 then connects the output terminal Output power of this power supply switch circuit by this inductance 3000.
In addition, this primary power Main power also connects this output terminal Output power by this first diode 2100, this inductance 3000, the power supply Standby power that awaits orders of this computer system also connects this output terminal Output power by this second diode 2200, this inductance 3000, this first diode 2100, second diode, 2200 negative poles electrically connect, and the output terminal Output power of this power supply switch circuit is also by these electric capacity 4000 electrical ground connection.
Thus, this computer system is in when suspending to internal memory, above-mentioned control signal Control signal is a low level, above-mentioned field effect transistor 1000 not conductings, the above-mentioned power supply Standby power that awaits orders is switched to above-mentioned this output terminal Output power via above-mentioned second diode 2200, inductance 3000; This computer system is by suspending to internal memory when entering normal operating conditions, above-mentioned control signal Control signal is a high level, this control signal Control signal is with this field effect transistor 1000 of conducting, and above-mentioned this primary power Main power will be switched to the output terminal Outputpower of above-mentioned this power supply switch circuit and then offer within this computer system and deposit via this field effect transistor 1000, inductance 3000.
The circuit that the utility model is formed by simple electronic component comes the integrated circuit (IC) chip of instead of dedicated, not only saved cost, and those electronic components are than the also easier corresponding substitute product that find of this integrated circuit (IC) chip, and this has using value to computermaker.
The above only is a preferable possible embodiments of the present utility model; be not so promptly limit to claim of the present utility model; so the equivalent structure that every utilization the utility model instructions and accompanying drawing content are done changes, and all is contained in the protection domain of the present utility model.
Claims (5)
1. power supply switch circuit is applied to it is characterized in that comprising in the computer system that tool suspends to memory function:
One field effect transistor, first diode and second diode;
The control signal that this computer system suspends to internal memory inserts the grid of this field effect transistor, its primary power inserts the source electrode of this field effect transistor, the drain electrode of this field effect transistor then connects the output terminal of this power supply switch circuit, in addition, the power supply of awaiting orders of this primary power and computer system is connected with this first diode and the positive pole of second diode respectively, and the negative pole of the output terminal of this power supply switch circuit and this first utmost point pipe and diode electrically connects; Just control the switching of this primary power and this power supply of awaiting orders via the level of this control signal.
2. power supply switch circuit according to claim 1, it is characterized in that this this computer system is in when suspending to internal memory, above-mentioned control signal is a low level, the not conducting of above-mentioned field effect transistor, the above-mentioned power supply of awaiting orders is switched to above-mentioned this output terminal via above-mentioned second diode.
3. power supply switch circuit according to claim 1, it is characterized in that, this computer system is by suspending to internal memory when entering normal operating conditions, above-mentioned control signal is a high level, above-mentioned primary power via this field effect transistor output to above-mentioned this power supply switch circuit output terminal, deposit to offer within this computer system.
4. power supply switch circuit according to claim 1, it is characterized in that, this switched system also comprises an inductance, this inductance is connected between the output terminal of the drain electrode of this field effect transistor and this power supply switch circuit, and this inductance also is connected between the output terminal of above-mentioned first and second diode cathode and this power supply switch circuit.
5. power supply switch circuit according to claim 1 is characterized in that this switched system also comprises an electric capacity, and the output terminal of this power supply switch circuit is by the electrical ground connection of this electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720051868XU CN201069548Y (en) | 2007-05-25 | 2007-05-25 | Power switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720051868XU CN201069548Y (en) | 2007-05-25 | 2007-05-25 | Power switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201069548Y true CN201069548Y (en) | 2008-06-04 |
Family
ID=39490937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720051868XU Expired - Lifetime CN201069548Y (en) | 2007-05-25 | 2007-05-25 | Power switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201069548Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650589B (en) * | 2008-08-11 | 2011-12-21 | 鸿富锦精密工业（深圳）有限公司 | Power-switching circuit |
| CN107592105A (en) * | 2017-10-24 | 2018-01-16 | 深圳市博诺技术有限公司 | A kind of switching circuit of automobile bus K line communication levels |
| CN109186685A (en) * | 2018-10-19 | 2019-01-11 | 上海航天能源股份有限公司 | A kind of control circuit for pressure controller |
-
2007
- 2007-05-25 CN CNU200720051868XU patent/CN201069548Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650589B (en) * | 2008-08-11 | 2011-12-21 | 鸿富锦精密工业（深圳）有限公司 | Power-switching circuit |
| CN107592105A (en) * | 2017-10-24 | 2018-01-16 | 深圳市博诺技术有限公司 | A kind of switching circuit of automobile bus K line communication levels |
| CN109186685A (en) * | 2018-10-19 | 2019-01-11 | 上海航天能源股份有限公司 | A kind of control circuit for pressure controller |
| CN109186685B (en) * | 2018-10-19 | 2021-10-19 | 上海航天能源股份有限公司 | Control circuit for pressure controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080604 |