CN201673449U - Power circuit improving problem of power consumption in standby state - Google Patents
Power circuit improving problem of power consumption in standby state Download PDFInfo
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- CN201673449U CN201673449U CN2010201947862U CN201020194786U CN201673449U CN 201673449 U CN201673449 U CN 201673449U CN 2010201947862 U CN2010201947862 U CN 2010201947862U CN 201020194786 U CN201020194786 U CN 201020194786U CN 201673449 U CN201673449 U CN 201673449U
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Abstract
The utility model provides a power circuit which improves the problem of power consumption in a standby state, the structure of which is as follows: a power supply is provided with a main power system and a standby power system, wherein the standby power system obtains input power and then outputs standby power. The main power system is controlled by a control unit to run or not; the control unit needs to obtain the standby power so as to obtain required power, and needs to receive a power on/off signal to be triggered to start; and after being started, the control unit can control the main power system to supply main output power. The power supply also comprises a switch unit, two ends of the switch unit are both connected with power circuits outputting the standby power and dummy loads, and the switch unit is controlled by the power on/off signal to be turned on or off, therefore, the switch can be cut off in the standby state without receiving the power on/off signal, thus preventing the dummy loads from consuming power.
Description
Technical field
The utility model relates to a kind of power circuit that improves the standby power consumption, particularly whether connects a dummy load by power supply keying signal decision, and avoid the power circuit of dummy load consumed power under holding state.
Background technology
The power supply unit that is used in now in the computing machine is generally supported the ATX mainboard architecture, the reform of ATX mainboard architecture on power supply is: the opening computer button does not directly connect power supply unit, but the button of should starting shooting is received on the motherboard, wake power supply unit in the standby up by motherboard again, make this power supply unit provide computing machine to be equipped with required running electric power, further, the ATX mainboard architecture can be realized the function of long-range machine open/close (RemoteON/OFF).In order to cooperate the ATX mainboard architecture, power supply unit must provide a standing electric power supply power supply unit body and motherboard to be in holding state when computing machine is not started shooting, when start button or this motherboard of remote opening signal triggering, this motherboard triggers this power supply unit by a power supply keying signal (Ps on/off signal) again and supplies a main output power, and all are equipped with running to drive computing machine.In order to realize this function, support the power supply unit of ATX mainboard architecture all to possess standing electric system that this standing electric power is provided and the main electric system that this main output power is provided, make this power supply unit obtain behind the external power i.e. this standing electric power of output.
And the more specifically running of this power supply unit as shown in Figure 1, and this power supply unit comprises a filter unit 11, a rectification unit 12, one standing electric system 2, a power factor correction circuit 3, one main electric system 4 haply.Wherein, this filter unit 11 connects an electric power source 8 and obtains an input electric power, and this standing electric system 2 obtains through the input electric power after filtering and the rectification, and exports a standing electric power 91 through conversion.On the other hand, connect the input electric power after this power factor correction circuit 3 is obtained filtering and rectification in addition in these rectification unit 12 rear ends, this power factor correction circuit 3 improves the power factor of electric power by the waveform that changes electric current and voltage, electric power through these power factor correction circuit 3 back outputs is defined as a modulation electric power, and this modulation electric power directly imports this main electric system 4 to be converted to a main output power 93.Yet, this power factor correction circuit 3 also need be subjected to a control module 5 to drive (also might be that power factor correction circuit 3 has independently control module respectively with main electric system 4) with this main electric system 4, and control module 5 comprises that the digital element of microcontroller chip or programmable scrambler is as control, driving purposes, and those digital elements must be obtained substrate bias electric power and just can operate, therefore, whether this control module 5 starts to depend on whether obtain this standing electric power 91 and whether be subjected to a power supply keying signal 92 (Ps on/off signal) to trigger startup.When this control module 5 did not start as yet, this power factor correction circuit 3 can't start with this main electric system 4, formed that this main electric system 4 decommissions, the holding state of standing electric system 2 runnings only.After the user presses start button on the main frame, can produce the motherboard of an electric signal to this main frame, this motherboard produces a power supply keying signal 92 (Ps on/off signal) again and delivers in the power supply unit to trigger this control module 5,5 needs of this control module this moment are obtained this standing electric power 91 and are started, and further drive this power factor correction circuit 3 and main electric system 4 runnings.
Yet, standing electric system 2 in holding state if no any load, when this control module 5 starts, for this standing electric system 2 moments increase load, before this standing electric system 2 is not adjusted output power as yet, the brownout that causes control module 5 to obtain may cause control module 5 to start.In order to ensure the digital element of reliable these standing electric power 91 runnings can normally start, the output terminal of this standing electric system 2 has also connect a dummy load 6, the electric current of this standing electric system 2 of raising by these dummy load 6 normalities, so the voltage that caused when starting of this control module 5 descends and is unlikely the startup that influences control module 5.But this dummy load 6 of the connection of normality causes the empty consumption of the power of normality.The power supply unit of various brands is constantly towards energy-conservation direction effort now, and power supply unit is except will more being subdivided into " 80PLUS " gold, silver, a plurality of grades of copper by the authentication of " 80PLUS ".Therefore, the situation of aforementioned dummy load 6 normalities power consumption must be improved, to reach purpose of energy saving.
The utility model content
Owing to must the applying virtual load guarantee that control module and main electric system start smoothly in the existing power supply supply, but bring the shortcoming that causes the normality power consumption simultaneously.The purpose of this utility model is to guarantee to improve the problem of this dummy load normality power consumption under this control module and the smooth prerequisite that starts of main electric system.
The utility model is a kind of power circuit that improves the standby power consumption, and it defines a power supply unit and has a main electric system and a standing electric system, and wherein, this standing electric system is promptly exported a standing electric power after obtaining an input electric power.Whether this main electric system operates then is controlled by a control module, this control module must connect the output terminal of this standing electric system and obtain standing electric power to obtain power demand, and this control module need receive a power supply keying signal and trigger startup, after this control module starts just this main electric system of may command supply a main output power.And this power supply unit also comprises a switch element, the two ends of this switch element connect a power circuit and a dummy load of exporting this standing electric power respectively, and whether the conducting of this switch element is controlled by this power supply keying signal, this switch element is cut-off state under the power supply holding state that not triggered by this power supply keying signal, this switch element is being subjected to this power supply keying signal to trigger the back conducting, and the standing electric system of this dummy load and this is electrically connected.
Therefore, when this power supply unit is in holding state, when this main frame shutdown (power supply unit holding state), this switch element is by making the state for the treatment of as independence, not being connected between this standing electric system and this dummy load, so this dummy load can not cause any loss.During this main frame start (power supply unit starts fully), this switch element conducting makes this dummy load be electrically connected at this standing electric system, reaches that voltage is enough to supply the purpose that control module starts when guaranteeing to restart.And when shutting down once more, this switch element is once more by separating this dummy load and standing electric system, and reaches purpose of energy saving.
Description of drawings
Fig. 1 is the synoptic diagram of available circuit;
Fig. 2 is the synoptic diagram of circuit framework of the present utility model;
Fig. 3 is the embodiment synoptic diagram of this switch element and dummy load.
Embodiment
See also Fig. 2, the utility model is a kind of power circuit that improves the standby power consumption, be a power supply unit that is used to support the ATX mainboard architecture, this power supply unit comprises a filter unit 11, a rectification unit 12, one standing electric system 2, a power factor correction circuit 3, one main electric system 4 and a control module 5.Wherein, this filter unit 11 connects an electric power source 8 and obtains an input electric power and a filtering, and this input electric power is through being converted to the direct current form through this rectification unit 12 again behind this filter unit 11.This standing electric system 2 obtains the input electric power behind overcommutation, the electric power modulation of should importing of these standing electric system 2 normalities is converted to a standing electric power 91, this standing electric power 91 is used to supply this power supply unit and the computer main frame panel (not shown) that driven is in holding state, and can accept the order of long-range machine open/close (Remote on/off) and start computing machine that this computer main frame panel (not shown) and this power supply unit connected and be equipped with (not shown) and enter duty.Also comprise many digital elements (as elements such as integrated circuit) that need utilize this standing electric power 91 that bias voltage is provided in this power supply unit, wherein, need this standing electric power 91 that this control module 5 that comprises of bias voltage is provided, this control module 5 is used to control this main electric system 4 at least, this control module 5 also can be controlled this power factor correction circuit 3 in the lump, perhaps this power factor correction circuit 3 can have independently control circuit, but whether independent control is not emphasis of the present utility model to this power factor correction circuit 3, and whether this power factor correction circuit 3 has the independently all applicable technical characterictic of the present utility model of control circuit, is being to utilize this control module 5 to electrically connect this main electric system 4 and the embodiment of this power factor correction circuit 3 as signal simultaneously shown in Fig. 2 therefore.This power factor correction circuit 3 is same to be connected rectification unit 12 rear ends and obtains the electric power of direct current, 3 power factors of improving electric power by the waveform that changes electric current and voltage of this power factor correction circuit, electric power through these power factor correction circuit 3 back outputs is defined as a modulation electric power, and this modulation electric power directly imports this main electric system 4 to be converted to a main output power 93.Yet, when power supply unit and computer main frame panel are in holding state, this control module 5 does not start as yet, therefore this power factor correction circuit 3 also can't operate with this main electric system 4, can't produce these main output power 93 supply computer main frame panel (not shown) and other computing machine and be equipped with (not shown) work power demand.After the opening computer button is pressed, will produce an electric signal and trigger this computer main frame panel (not shown), this computer main frame panel (not shown) then produces a power supply keying signal 92 (Ps on/off), triggered by this power supply keying signal 92 just can start, further drive this power factor correction circuit 3 and main electric system 4 work by this control module 5, the main output power 93 of these main electric system 4 outputs promptly drives a plurality of computing machines and is equipped with running.Yet, the problem of undertension can not take place when starting in order to ensure this control module 5, this standing electric system 2 has connected a switch element 7, the two ends of this switch element 7 connect a power circuit and a dummy load 6 of exporting this standing electric power 91 respectively, and whether the conducting of this switch element 7 is controlled by this power supply keying signal 92, this switch element 7 is cut-off state under the power supply holding state that not triggered by this power supply keying signal 92, the conducting after triggered by this power supply keying signal 92 of this switch element 7 electrically connects this standing electric system 2 and this dummy load 6.Therefore, when this power supply unit is in holding state, when this main frame shutdown (power supply unit holding state), this switch element 7 is by making the state for the treatment of as independence, not being connected between this standing electric system 2 and this dummy load 6, so this dummy load 6 can not cause any loss.During this main frame start (power supply unit starts fully), these switch element 7 conductings make this dummy load 6 be electrically connected at this standing electric system 2, reach to guarantee that voltage is enough to supply the purpose that control module 5 starts when starting.And when shutting down once more, this switch element 7 is once more by separating this dummy load 6 and standing electric system 2, and reaches purpose of energy saving.
See also Fig. 3, Figure 3 shows that an enforceable example of this dummy load 6 and this switch element 7, wherein, can connect a metal oxide semiconductcor field effect transistor (MOSFET) 70 on the power circuit of these standing electric system 2 these standing electric power 91 of output, and the drain electrode of this metal oxide semiconductcor field effect transistor 70 (drain) is connected to power circuit and this dummy load 6 of exporting this standing electric power 91 with source electrode (source).This dummy load 6 is then utilized a plurality of resistor 61 resistive loads that form in parallel, and these a plurality of resistors 61 connect an earth point 62.The grid of this metal oxide semiconductcor field effect transistor 70 (gate) then connects this power supply keying signal 92, and when this power supply keying signal 92 triggers these control module 5 startups, make this metal oxide semiconductcor field effect transistor (MOSFET) 70 conductings (on) synchronously.Otherwise, when closing this control module 5, make this metal oxide semiconductcor field effect transistor (MOSFET) 70 synchronously by (off).Can guarantee this power supply unit whereby when holding state, this dummy load 6 can not consume any power, reaches energy-conservation effect.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; any those skilled in the art; in not breaking away from spirit and scope of the present utility model and a little change and the retouching done; therefore all should be covered by in the utility model, protection domain of the present utility model is as the criterion as the scope person of defining that look appending claims.
Claims (4)
1. one kind is improved the power circuit that standby is consumed energy, it defines a power supply unit, described power supply unit has a main electric system (4) and a standing electric system (2), described standing electric system (2) output one standing electric power (91), one control module (5) is obtained described standing electric power (91) and is subjected to the triggering of a power supply keying signal (92) and drives described main electric system (4) output one main output power (93), and described power supply unit is characterised in that:
The two ends of one switch element (7) connect the power circuit and a dummy load (6) of the described standing electric power of output (91) respectively, and whether the conducting of described switch element (7) is controlled by described power supply keying signal (92), described switch element (7) is cut-off state under the power supply holding state that not triggered by described power supply keying signal (92), described switch element (7) conducting after triggered by described power supply keying signal (92) electrically connects described standing electric system (2) and described dummy load (6).
2. the power circuit that improves the standby power consumption according to claim 1 is characterized in that described dummy load (6) is a resistive load.
3. the power circuit that improves the standby power consumption according to claim 2 is characterized in that, described dummy load (6) is made of a plurality of resistors (61) parallel connection, and described dummy load (6) connects an earth point (62).
4. the power circuit that improves the standby power consumption according to claim 1 is characterized in that described switch element (7) is a metal oxide semiconductcor field effect transistor (70).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201947862U CN201673449U (en) | 2010-05-11 | 2010-05-11 | Power circuit improving problem of power consumption in standby state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201947862U CN201673449U (en) | 2010-05-11 | 2010-05-11 | Power circuit improving problem of power consumption in standby state |
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| Publication Number | Publication Date |
|---|---|
| CN201673449U true CN201673449U (en) | 2010-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201947862U Expired - Fee Related CN201673449U (en) | 2010-05-11 | 2010-05-11 | Power circuit improving problem of power consumption in standby state |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368248A (en) * | 2012-04-06 | 2013-10-23 | 新巨企业股份有限公司 | Back-up power system with low power consumption |
| CN103887993A (en) * | 2012-12-20 | 2014-06-25 | 仁宝电脑工业股份有限公司 | Electronic device |
| CN104062914A (en) * | 2013-02-18 | 2014-09-24 | 仁宝电脑工业股份有限公司 | Electronic Apparatus |
| CN106341035A (en) * | 2016-10-21 | 2017-01-18 | 无锡爱睿芯电子有限公司 | Power switch module |
-
2010
- 2010-05-11 CN CN2010201947862U patent/CN201673449U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368248A (en) * | 2012-04-06 | 2013-10-23 | 新巨企业股份有限公司 | Back-up power system with low power consumption |
| CN103887993A (en) * | 2012-12-20 | 2014-06-25 | 仁宝电脑工业股份有限公司 | Electronic device |
| CN103887993B (en) * | 2012-12-20 | 2017-07-14 | 仁宝电脑工业股份有限公司 | Electronic installation |
| CN104062914A (en) * | 2013-02-18 | 2014-09-24 | 仁宝电脑工业股份有限公司 | Electronic Apparatus |
| CN106341035A (en) * | 2016-10-21 | 2017-01-18 | 无锡爱睿芯电子有限公司 | Power switch module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20170511 |
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| CF01 | Termination of patent right due to non-payment of annual fee |