CN102307014A - Power supply capable of reducing standby electricity consumption according to standby signal and electrical apparatus thereof - Google Patents
Power supply capable of reducing standby electricity consumption according to standby signal and electrical apparatus thereof Download PDFInfo
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- CN102307014A CN102307014A CN201110271168A CN201110271168A CN102307014A CN 102307014 A CN102307014 A CN 102307014A CN 201110271168 A CN201110271168 A CN 201110271168A CN 201110271168 A CN201110271168 A CN 201110271168A CN 102307014 A CN102307014 A CN 102307014A
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- switch
- power supply
- electromagnetic interference
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- supply unit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention relates to a power supply capable of reducing standby electricity consumption according to a standby signal and an electrical apparatus thereof. The power supply of the present invention comprises the following parts: a direct voltage source; a first switch used for generating pulse voltage; an induction output circuit which is coupled to the first switch and generates output voltage according to the direct voltage source and the pulse voltage; an electromagnetic interference protection unit which is coupled to the first switch and is used for reducing electromagnetic interference generated by the pulse voltage; a second switch which is coupled between the electromagnetic interference protection unit and the first switch, and is used for disabling the electromagnetic interference protection unit according to a standby signal. The power supply and the electrical apparatus thereof are used for reducing energy consumption.
Description
[technical field]
The invention relates to a kind of power supply unit and electronic installation, particularly about a kind of power supply unit and electronic installation that reduces standby power consumption according to the standby signal.
[background technology]
Please refer to Fig. 1, Fig. 1 is the sketch map of convention power supply unit 100.Power supply unit 100 comprises direct voltage source Vdc, the first switch T1, inductive output circuit 110, and feedback control unit 112.The first switch T1 in order to according to the signal open and close of its control end to produce pulse voltage.Inductive output circuit 110 is coupled to the first switch T1, in order to produce an output voltage V o according to direct voltage source Vdc and pulse voltage.Feedback control unit 112 is coupled to the control end of the first switch T1 and the output of inductive output circuit 110, is used for controlling according to the size of output voltage V o the open and close of the first switch T1.According to above-mentioned configuration, power supply unit 100 can be stablized power supply and give its load, the for example system 122 of electronic installation 120.
Yet, because the unlatching of the first switch T1 and close the pulse voltage that is produced and can cause electromagnetic interference (electromagnetic interference, EMI), and electromagnetic interference can cause the running of system 122 to be interfered, even causes damaging.In order to reduce electromagnetic interference, power supply unit 100 comprises electromagnetic interference shielding unit 130 in addition and is coupled to the first switch T1, is used to reduce the electromagnetic interference that pulse voltage produces.As shown in Figure 1, electromagnetic interference shielding unit 130 can be the two ends that electric capacity is coupled to the first switch T1, and when the first switch T1 opened and close with the generation pulse voltage, electromagnetic interference shielding unit 130 can suppress the generation of electromagnetic interference.
Though electromagnetic interference shielding unit 130 can reduce the electromagnetic interference that pulse voltage produces; But when system 122 gets into holding state (that is the power output of power supply unit 100 reduces); The electromagnetic interference shielding unit still can continue running, the electrical source consumption of electromagnetic interference shielding unit 130 meetings increasing this moment power supply unit 100.
[summary of the invention]
One object of the present invention is to provide a kind of power supply unit according to standby signal minimizing standby power consumption, and it comprises: direct voltage source; First switch is in order to produce pulse voltage; Inductive output circuit is coupled to this first switch, and this inductive output circuit produces an output voltage according to this direct voltage source and this pulse voltage; The electromagnetic interference shielding unit is coupled to this first switch, is used to reduce the electromagnetic interference that this pulse voltage produces; And second switch, be coupled between this electromagnetic interference shielding unit and this first switch, be used for according to this electromagnetic interference shielding unit of standby signal decapacitation.
As optional technical scheme, described power supply unit comprises the control end that feedback control unit is coupled to this first switch in addition, is used for the open and close according to this first switch of size control of this output voltage.
As optional technical scheme, described power supply unit comprises control unit in addition, in order to produce the control end of this standby signal to this second switch.
As optional technical scheme; Described power supply unit comprises feedback control unit in addition; Be coupled to the control end of this second switch; This feedback control unit comprises comparison circuit, is used for a load output voltage and a preset value are compared, when this load output voltage is lower than this preset value, to produce the control end of this standby signal to this second switch.
As optional technical scheme, this electromagnetic interference shielding unit comprises electric capacity.
Another object of the present invention is to provide a kind of electronic installation according to standby signal minimizing standby power consumption, and it comprises: system is used to control the operation of electronic installation; And power supply unit, be used to provide this system power supply.This power supply unit comprises: direct voltage source; First switch is in order to produce pulse voltage; Inductive output circuit is coupled to this first switch, and this inductive output circuit produces an output voltage according to this direct voltage source and this pulse voltage; The electromagnetic interference shielding unit is coupled to this first switch, is used to reduce the electromagnetic interference that this pulse voltage produces; And second switch, be coupled between this electromagnetic interference shielding unit and this first switch, be used for according to this electromagnetic interference shielding unit of standby signal decapacitation.
As optional technical scheme, this power supply unit comprises the control end that feedback control unit is coupled to this first switch in addition, is used for the open and close according to this first switch of size control of this output voltage.
As optional technical scheme, this power supply unit comprises control unit in addition, is used to produce when this system gets into holding state the control end of this standby signal to this second switch.
As optional technical scheme; This power supply unit comprises feedback control unit in addition; Be coupled to the control end of this second switch; This feedback control unit comprises comparison circuit, is used for the load output voltage and a preset value of this system are compared, when this load output voltage is lower than this preset value, to produce the control end of this standby signal to this second switch.
As optional technical scheme, this electromagnetic interference shielding unit comprises electric capacity.
Compared with prior art, power supply unit of the present invention can be closed the electromagnetic interference shielding unit when holding state, reducing the electrical source consumption that the electromagnetic interference shielding unit causes, and then reduces standby power consumption.
[description of drawings]
Fig. 1 is the sketch map of convention power supply unit.
Fig. 2 is the sketch map of power supply unit of the present invention.
Fig. 3 is the circuit diagram of second feedback control unit of Fig. 2.
Fig. 4 is the sketch map of another power supply unit of the present invention.
[embodiment]
Please be simultaneously with reference to figure 2 and Fig. 3.Fig. 2 is the sketch map of power supply unit 200 of the present invention, and Fig. 3 is the circuit diagram of second feedback control unit 240 of Fig. 2.Power supply unit 200 is in order to provide power supply to its load, for example the system 222 of electronic installation 220.Power supply unit 200 comprises direct voltage source Vdc, the first switch T1, inductive output circuit 210, the first feedback control units 212, electromagnetic interference shielding unit 230, second switch T2, and second feedback control unit 240.The first switch T1 in order to according to the signal open and close of its control end to produce pulse voltage.Inductive output circuit 210 is coupled to the first switch T1, in order to produce an output voltage V o according to direct voltage source Vdc and pulse voltage.First feedback control unit 212 is coupled to the control end of the first switch T1 and the output of inductive output circuit 210, is used for controlling according to the size of output voltage V o the open and close of the first switch T1.Electromagnetic interference shielding unit 230 is coupled to the first switch T1, is used to reduce the electromagnetic interference that pulse voltage produces.
Than prior art; The second switch T2 of power supply unit of the present invention is coupled between the electromagnetic interference shielding unit 230 and the first switch T1, and the signal that is used for receiving according to its control end is with activation (enable) or decapacitation (disable) electromagnetic interference shielding unit 230.And second feedback control unit 240 comprises a comparison circuit 242; Be used for the load output voltage V s and a preset value of system 222 are compared, produce the control end of standby signal when being lower than preset value to second switch T2 with load output voltage V s in system 222.For instance; Preset value can inductive output circuit 210 the component voltage of output voltage V o, when system 222 got into holding states, the consumed power of system 222 reduced; And the output current of power supply unit 200 also reduces, so the load output voltage V s of system 222 can reduce.When the load output voltage V s of system 222 is lower than the component voltage of output voltage V o of inductive output circuit 210; The output voltage of comparison circuit 242 is a high potential; Therefore not conducting and can't be luminous of light-emittingdiode 244; Photoinduction switch 246 is not closed because of light-emittingdiode 244 is luminous, and then makes the output of second feedback control unit 240 export an electronegative potential signal (that is standby signal) to close second switch T2.When second switch T2 was closed, electromagnetic interference shielding unit 230 a wherein end no longer was coupled to the first switch T1, so electromagnetic interference shielding unit 230 can decommission.
When system 222 got into operating state, the consumed power of system 222 increased on the other hand, and the output current of power supply unit 200 also increases, so the load output voltage V s of system 222 can raise.When the load output voltage V s of system 222 is higher than the component voltage of output voltage V o of inductive output circuit 210; The output voltage of comparison circuit 242 is an electronegative potential; Therefore conducting and luminous of light-emittingdiode 244; Photoinduction switch 246 is because of light-emittingdiode 244 luminous being unlocked, and then makes the output of second feedback control unit 240 export a high potential signal to open second switch T2.When second switch T2 was unlocked, the two ends of electromagnetic interference shielding unit 230 were respectively coupled to the two ends of the first switch T1, so electromagnetic interference shielding unit 230 can come into operation once again.
The circuit of above-mentioned second feedback control unit 240 is one of them embodiment of the present invention, and second feedback control unit 240 can also be reached above-mentioned effect by other forms of circuit.
Please refer to Fig. 4, Fig. 4 is the sketch map of another power supply unit 400 of the present invention.As shown in Figure 4, power supply unit 400 comprises direct voltage source Vdc, the first switch T1, inductive output circuit 210, the first feedback control units 212, electromagnetic interference shielding unit 230, second switch T2, and control unit 450.The load output voltage that is different from second feedback control unit, 240 detecting systems 222 of Fig. 2; Whether the control unit 450 of Fig. 4 gets into holding state (for example whether a certain block of detecting system 222 has power supply) in order to detecting system 222; When control unit 450 detects system 222 when getting into holding states, control unit 450 can produce standby signal (that is electronegative potential signal) to the control end of second switch T2 to close second switch T2.When second switch T2 was closed, electromagnetic interference shielding unit 230 a wherein end no longer was coupled to the first switch T1, so electromagnetic interference shielding unit 230 can decommission.Note, when system 222 gets into holding states, also can directly produce standby signal (that is electronegative potential signal) to the control end of second switch T2 to close second switch T2.
In addition, though above-mentioned power supply unit 200,400 is independent of electronic installation 220, power supply unit 200,400 can also be integrated in the electronic installation 220.
Compared to prior art, power supply unit of the present invention can be closed the electromagnetic interference shielding unit when holding state, reducing the electrical source consumption that the electromagnetic interference shielding unit causes, and then the power consumption when reducing standby.
Though the present invention discloses as above with embodiment, so it is not that protection scope of the present invention is when being as the criterion with claims in order to qualification the present invention.
Claims (10)
1. one kind is reduced the power supply unit of standby power consumption according to the standby signal, it is characterized in that comprising:
Direct voltage source;
First switch is in order to produce pulse voltage;
Inductive output circuit is coupled to this first switch, and this inductive output circuit produces an output voltage according to this direct voltage source and this pulse voltage;
The electromagnetic interference shielding unit is coupled to this first switch, is used to reduce the electromagnetic interference that this pulse voltage produces; And
Second switch is coupled between this electromagnetic interference shielding unit and this first switch, is used for according to this electromagnetic interference shielding unit of standby signal decapacitation.
2. power supply unit as claimed in claim 1 is characterized in that comprising the control end that feedback control unit is coupled to this first switch in addition, is used for the open and close according to this first switch of size control of this output voltage.
3. power supply unit as claimed in claim 1 is characterized in that comprising in addition control unit, in order to produce the control end of this standby signal to this second switch.
4. power supply unit as claimed in claim 1; It is characterized in that comprising in addition feedback control unit; Be coupled to the control end of this second switch; This feedback control unit comprises comparison circuit, is used for a load output voltage and a preset value are compared, when this load output voltage is lower than this preset value, to produce the control end of this standby signal to this second switch.
5. power supply unit as claimed in claim 1 is characterized in that wherein this electromagnetic interference shielding unit comprises electric capacity.
6. one kind is reduced the electronic installation of standby power consumption according to the standby signal, it is characterized in that comprising:
System is used to control the operation of electronic installation; And
Power supply unit is used to provide this system power supply, and this power supply unit comprises:
Direct voltage source;
First switch is in order to produce pulse voltage;
Inductive output circuit is coupled to this first switch, and this inductive output circuit produces an output voltage according to this direct voltage source and this pulse voltage;
The electromagnetic interference shielding unit is coupled to this first switch, is used to reduce the electromagnetic interference that this pulse voltage produces; And
Second switch is coupled between this electromagnetic interference shielding unit and this first switch, is used for according to this electromagnetic interference shielding unit of standby signal decapacitation.
7. electronic installation as claimed in claim 6 is characterized in that this power supply unit comprises the control end that feedback control unit is coupled to this first switch in addition, is used for the open and close according to this first switch of size control of this output voltage.
8. electronic installation as claimed in claim 6 is characterized in that this power supply unit comprises control unit in addition, is used to produce when this system gets into holding state the control end of this standby signal to this second switch.
9. electronic installation as claimed in claim 6; It is characterized in that this power supply unit comprises feedback control unit in addition; Be coupled to the control end of this second switch; This feedback control unit comprises comparison circuit, is used for the load output voltage and a preset value of this system are compared, when this load output voltage is lower than this preset value, to produce the control end of this standby signal to this second switch.
10. electronic installation as claimed in claim 6 is characterized in that this electromagnetic interference shielding unit comprises electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110271168A CN102307014A (en) | 2011-09-15 | 2011-09-15 | Power supply capable of reducing standby electricity consumption according to standby signal and electrical apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110271168A CN102307014A (en) | 2011-09-15 | 2011-09-15 | Power supply capable of reducing standby electricity consumption according to standby signal and electrical apparatus thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102307014A true CN102307014A (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110271168A Pending CN102307014A (en) | 2011-09-15 | 2011-09-15 | Power supply capable of reducing standby electricity consumption according to standby signal and electrical apparatus thereof |
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| CN (1) | CN102307014A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253557A (en) * | 2013-06-28 | 2014-12-31 | 美格纳半导体有限公司 | Power converter for reducing standby power consumption |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1023354A (en) * | 1996-06-29 | 1998-01-23 | Matsushita Electric Ind Co Ltd | Power supply device for television receiver |
| US20080315858A1 (en) * | 2007-06-20 | 2008-12-25 | Samsung Electronics Co. | Switch mode power supply apparatus having active clamping circuit |
-
2011
- 2011-09-15 CN CN201110271168A patent/CN102307014A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1023354A (en) * | 1996-06-29 | 1998-01-23 | Matsushita Electric Ind Co Ltd | Power supply device for television receiver |
| US20080315858A1 (en) * | 2007-06-20 | 2008-12-25 | Samsung Electronics Co. | Switch mode power supply apparatus having active clamping circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104253557A (en) * | 2013-06-28 | 2014-12-31 | 美格纳半导体有限公司 | Power converter for reducing standby power consumption |
| CN104253557B (en) * | 2013-06-28 | 2018-06-29 | 美格纳半导体有限公司 | For reducing the power converter of stand-by power consumption |
| TWI631800B (en) * | 2013-06-28 | 2018-08-01 | 韓商美格納半導體有限公司 | Power converter for reducing standby power consumption |
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Application publication date: 20120104 |