CN209419478U - Low standby power loss circuit and power switch system - Google Patents
Low standby power loss circuit and power switch system Download PDFInfo
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- CN209419478U CN209419478U CN201920141524.0U CN201920141524U CN209419478U CN 209419478 U CN209419478 U CN 209419478U CN 201920141524 U CN201920141524 U CN 201920141524U CN 209419478 U CN209419478 U CN 209419478U
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Abstract
The utility model discloses a kind of low standby power loss circuit and power switch system, including alternating current input unit, switch unit, filtering voltage regulation unit, voltage regulation unit and main control unit, the input terminal of the switch unit is electrically connected with the output end of the alternating current input unit, the output end of the switch unit is electrically connected with the input terminal of the filtering voltage regulation unit, the output end of the filtering voltage regulation unit is electrically connected with the starting input terminal of the main control unit, the power supply output end of the main control unit is electrically connected with the input terminal of the control terminal of the switch unit and the voltage regulation unit respectively, the voltage regulation unit is also electrically connected with the output end of the switch unit.The low standby power loss circuit and power switch system of the utility model, capable of making power supply, switching tube opens the voltage and current provided needed for being switched on startup.After start completion, switching tube, which gradually closes, to be finished, and is lost without voltage and current, to realize more low-power consumption.
Description
Technical field
The utility model relates to power system circuit fields, more particularly to a kind of low standby power loss circuit and power switch
System.
Background technique
Power-supply system (Power System) be by rectifier equipment, DC distribution equipment, battery group, DC converter,
The totality of rack power supplies equipment etc. and relevant distribution line composition.Power-supply system for various motors provide various high and low frequencies hand over,
DC power supply safeguards the even running of electric system.Switching Power Supply just develops towards intelligent, digitized direction.Just come out
Intelligent digital power-supply system with its excellent characteristic and complete monitoring function, just causing the concern of people.Digital power mentions
Intelligentized adaptability and flexibility have been supplied, has had direct monitoring, processing and the ability for adapting to system condition, has been able to satisfy any multiple
Miscellaneous power requirement.In addition, digital power can also ensure the reliability of system long-term work, including failure by remote diagnosis
Management, overcurrent protection and avoid shut down etc..
Currently, the stand-by circuit for being commonly utilized in the power supply of the single-ended reverse exciting of low voltage starting has multiple load resistances, without
For pipe before power initiation or after restarting completion, these load resistances can all consume a large amount of energy, to cause one
Fixed waste is unfavorable for energy saving.
Utility model content
The purpose of the utility model is to overcome shortcoming in the prior art, a kind of low standby power loss circuit and electricity are provided
Source switch system, capable of making power supply, switching tube opens the voltage and current provided needed for being switched on startup, and after start completion,
Switching tube, which gradually closes, to be finished, and is lost without voltage and current, to realize more low-power consumption, reduces the unnecessary waste of the energy.
The purpose of this utility model is achieved through the following technical solutions:
A kind of low standby power loss circuit, comprising: alternating current input unit, switch unit, filtering voltage regulation unit, voltage regulation unit
And main control unit, the input terminal of the switch unit are electrically connected with the output end of the alternating current input unit, the switch is single
The output end of member is electrically connected with the input terminal of the filtering voltage regulation unit, the output end of the filtering voltage regulation unit and the master control
The starting input terminal of unit is electrically connected, the power supply output end of the main control unit respectively with the control terminal of the switch unit and institute
The input terminal electrical connection of voltage regulation unit is stated, the voltage regulation unit is also electrically connected with the output end of the switch unit.
The switch unit includes metal-oxide-semiconductor Q2 and resistance R22, the pole D of the metal-oxide-semiconductor Q2 in one of the embodiments,
It is electrically connected with the output end of the alternating current input unit, the pole S of the metal-oxide-semiconductor Q2 and the first end of the resistance R22 are electrically connected
It connects, the second end of the resistance R22 is electrically connected with the input terminal of the filtering voltage regulation unit.
The metal-oxide-semiconductor Q2 is N-channel depletion type MOS tube in one of the embodiments,.
The filtering voltage regulation unit includes capacitor C20 and zener diode D4, the capacitor in one of the embodiments,
The first end of C20 is electrically connected with the output end of the switch unit, the second end ground connection of the capacitor C20, two pole of pressure stabilizing
The cathode of pipe D4 is electrically connected with the first end of the capacitor C20, the plus earth of the zener diode D4.
The voltage regulation unit includes zener diode D3 and resistance R28, two pole of pressure stabilizing in one of the embodiments,
The cathode of pipe D3 is electrically connected with the power supply output end of the first end of the resistance R28 and the main control unit respectively, the resistance
The electrical connection of the second end of R28 and the second end of the resistance R22.
The main control unit includes main control chip U5 and capacitor C15 in one of the embodiments, the capacitor C15's
One end is electrically connected with the GND pin of the main control chip U5, the VDD of the other end of the capacitor C15 and the main control chip U5
Pin electrical connection, the SWS pin of the main control chip U5 are electrically connected with the output end of the filtering voltage regulation unit, the master control core
The HCG pin of piece U5 is electrically connected with the input terminal of the voltage regulation unit.
The low standby power loss circuit further includes rectification filtering unit in one of the embodiments, the rectifying and wave-filtering
The input terminal of unit is electrically connected with one end of the alternating current input unit, the output end of the rectification filtering unit and the master
Control the power input electrical connection of unit.
The rectification filtering unit includes diode D1 and filter capacitor C25, two pole in one of the embodiments,
The anode of pipe D1 is electrically connected with the output end of the alternating current input unit, the cathode of the diode D1 respectively with the filtering
The electrical connection of the power input of one end of capacitor C25 and the main control unit, the other end ground connection of the filter capacitor C25.
The rectification filtering unit further includes resistance R17 in one of the embodiments, one end of the resistance R17 with
The cathode of the diode D1 is electrically connected, the other end of the resistance R17 respectively with one end of the filter capacitor C25 and described
The power input of main control unit is electrically connected.
A kind of power switch system, including low standby power loss circuit described in any of the above one.
The utility model compared with the prior art the advantages of and have the beneficial effect that:
The utility model is a kind of low standby power loss circuit and power switch system, passes through switch unit, filtering voltage regulation list
Member and main control unit then carry out main control unit by filtering voltage regulation unit when the metal-oxide-semiconductor in switch unit has voltage
Power supply, and main control unit also can output voltage into switch unit so that the Vgs of the metal-oxide-semiconductor in switch unit is gradually
Reduce, and off state finally occur, at this point, main control unit has started, and realizes powering on for more low-power consumption.Such as
This, low standby power loss circuit can make power supply, and switching tube opens the voltage and current provided needed for being switched on startup, and is starting
After the completion, switching tube, which gradually closes, finishes, and loses without voltage and current, to realize more low-power consumption, reduces the unnecessary wave of the energy
Take.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the functional block diagram of the low standby power loss circuit of one embodiment of the utility model；
Fig. 2 is the circuit diagram of the low standby power loss circuit of one embodiment of the utility model.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that making practical new to this
The disclosure of type understands more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet
Include any and all combinations of one or more related listed items.
In order to reach the requirement of North America, European Union and Chinese lower power usage.A line is added on existing route
Road, switching tube, which is opened, on startup provides booting required voltage and current.After start completion, switching tube, which gradually closes, to be finished, and is not had
Voltage and current loss, to realize more low-power consumption.
Referring to Fig. 1, a kind of low standby power loss circuit, comprising: alternating current input unit 100, switch unit 200, filtering
Voltage regulation unit 300, voltage regulation unit 400 and main control unit 500, the input terminal of the switch unit and the alternating current input unit
Output end electrical connection, the output end of the switch unit is electrically connected with the input terminal of the filtering voltage regulation unit, the filtering
The output end of voltage regulation unit is electrically connected with the starting input terminal of the main control unit, the power supply output end difference of the main control unit
It is electrically connected with the input terminal of the control terminal of the switch unit and the voltage regulation unit, the voltage regulation unit is also single with the switch
The output end electrical connection of member.
It should be noted that the alternating current input unit 100 is used for input ac voltage, the switch unit 200 is used
In the voltage of acquisition input, and realize the shutdown of input, the filtering voltage regulation unit 300 for realizing input voltage filtering
And pressure stabilizing；The voltage regulation unit 400 is for realizing the voltage regulation result to main control unit, and the main control unit 500 is for controlling system
The starting up of system.In this way, by switch unit, filtering voltage regulation unit and main control unit, when the metal-oxide-semiconductor in switch unit has electricity
When pressure, then main control unit is powered by filtering voltage regulation unit, and main control unit also can output voltage extremely switch
In unit, so that the Vgs of the metal-oxide-semiconductor in switch unit is gradually reduced, and finally there is off state, at this point, master control list
Member has started, and realizes powering on for more low-power consumption.
It should be noted that referring to Fig. 2, the switch unit includes metal-oxide-semiconductor Q2 and resistance R22, the metal-oxide-semiconductor Q2's
The pole D is electrically connected with the output end of the alternating current input unit, the first end electricity of the pole S of the metal-oxide-semiconductor Q2 and the resistance R22
Connection, the second end of the resistance R22 are electrically connected with the input terminal of the filtering voltage regulation unit.In the present embodiment, the MOS
Pipe Q2 is N-channel depletion type MOS tube.Wherein, metal-oxide-semiconductor Q2 is N-channel depletion type MOS tube, is as Vgs=0, channel has been deposited
, it be in the fabrication process using ion implantation in advance on the surface of substrate, manufactured between D, S.It is referred to as initial
Channel.Further, when the hourglass source electrode of metal-oxide-semiconductor Q2 has voltage, just with the presence of electric current, pass through resistance R22 and capacitor C20 filtering
Afterwards, charging is carried out to Vdd using the SWS pin of master control IC and HVG foot is powered.The Vgs of metal-oxide-semiconductor Q2 is less than 0 at this time, with
The reduction of Vgs, charging current gradually reduce until being zero, metal-oxide-semiconductor Q2 is turned off, to realize that low-power consumption starts.
In this way, low standby power loss circuit can make power supply, switching tube opens the voltage and electricity provided needed for being switched on startup
Stream, and after start completion, switching tube, which gradually closes, to be finished, and is lost without voltage and current, to realize more low-power consumption, reduces the energy
Unnecessary waste.
It should be noted that referring to Fig. 2, the filtering voltage regulation unit includes capacitor C20 and zener diode D4, it is described
The first end of capacitor C20 is electrically connected with the output end of the switch unit, the second end ground connection of the capacitor C20, the pressure stabilizing
The cathode of diode D4 is electrically connected with the first end of the capacitor C20, the plus earth of the zener diode D4.In this way, logical
Crossing setting capacitor C20 may be implemented filter action to input voltage, and pressure stabilizing effect may be implemented by the way that zener diode D4 is arranged
Fruit.
Referring to Fig. 2, the voltage regulation unit includes zener diode D3 and resistance R28, the yin of the zener diode D3
Pole is electrically connected with the power supply output end of the first end of the resistance R28 and the main control unit respectively, and the second of the resistance R28
The electrical connection of the second end of end and the resistance R22.
Referring to Fig. 2, the main control unit includes main control chip U5 and capacitor C15, one end of the capacitor C15 with it is described
The GND pin of main control chip U5 is electrically connected, and the other end of the capacitor C15 is electrically connected with the VDD pin of the main control chip U5,
The SWS pin of the main control chip U5 is electrically connected with the output end of the filtering voltage regulation unit, the HCG pipe of the main control chip U5
Foot is electrically connected with the input terminal of the voltage regulation unit.
Referring to Fig. 2, the low standby power loss circuit further includes rectification filtering unit 600, the rectification filtering unit
Input terminal is electrically connected with one end of the alternating current input unit, the output end of the rectification filtering unit and the main control unit
Power input electrical connection.
Referring to Fig. 2, the rectification filtering unit includes diode D1 and filter capacitor C25, the sun of the diode D1
Pole is electrically connected with the output end of the alternating current input unit, the cathode of the diode D1 respectively with the filter capacitor C25
One end and the main control unit power input electrical connection, the filter capacitor C25 the other end ground connection.
Referring to Fig. 2, the rectification filtering unit further includes resistance R17, one end of the resistance R17 and the diode
The cathode of D1 is electrically connected, the other end of the resistance R17 respectively with one end of the filter capacitor C25 and the main control unit
Power input electrical connection.
The course of work: when the hourglass source electrode of metal-oxide-semiconductor Q2 has voltage, just with the presence of electric current, pass through resistance R22 and capacitor C20 filter
After wave, charging is carried out to Vdd using the SWS pin of main control chip U5 and HVG foot is powered.The Vgs of metal-oxide-semiconductor Q2 is less than 0 at this time,
With the reduction of Vgs, charging current is gradually reduced until being zero, metal-oxide-semiconductor Q2 is turned off.When Vdd rises to opening for main control chip U5
Voltage is opened, main control chip U5 starts to work, and the VCC winding of transformer is by providing master after diode D1 rectification, capacitor C25 filtering
Control energy needed for chip U5 works.In this way, can make power supply, switching tube opens the voltage and current provided needed for being switched on startup.
After start completion, switching tube, which gradually closes, to be finished, and is lost without voltage and current, to realize more low-power consumption.
A kind of power switch system, including low standby power loss circuit described in any of the above one.
The utility model compared with the prior art the advantages of and have the beneficial effect that:
The utility model is a kind of low standby power loss circuit and power switch system, passes through switch unit, filtering voltage regulation list
Member and main control unit then carry out main control unit by filtering voltage regulation unit when the metal-oxide-semiconductor in switch unit has voltage
Power supply, and main control unit also can output voltage into switch unit so that the Vgs of the metal-oxide-semiconductor in switch unit is gradually
Reduce, and off state finally occur, at this point, main control unit has started, and realizes powering on for more low-power consumption.Such as
This, low standby power loss circuit can make power supply, and switching tube opens the voltage and current provided needed for being switched on startup, and is starting
After the completion, switching tube, which gradually closes, finishes, and loses without voltage and current, to realize more low-power consumption, reduces the unnecessary wave of the energy
Take.
Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed
Carefully, but it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the general of this field
For logical technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these are all
Belong to the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of low standby power loss circuit characterized by comprising alternating current input unit, switch unit, filtering voltage regulation list
Member, voltage regulation unit and main control unit, the input terminal of the switch unit are electrically connected with the output end of the alternating current input unit,
The output end of the switch unit is electrically connected with the input terminal of the filtering voltage regulation unit, the output end of the filtering voltage regulation unit
Be electrically connected with the starting input terminal of the main control unit, the power supply output end of the main control unit respectively with the switch unit
The electrical connection of the input terminal of control terminal and the voltage regulation unit, output end of the voltage regulation unit also with the switch unit are electrically connected
It connects.
2. low standby power loss circuit according to claim 1, which is characterized in that the switch unit include metal-oxide-semiconductor Q2 and
Resistance R22, the pole D of the metal-oxide-semiconductor Q2 are electrically connected with the output end of the alternating current input unit, the pole S of the metal-oxide-semiconductor Q2 with
The first end of the resistance R22 is electrically connected, and the second end of the resistance R22 and the input terminal of the filtering voltage regulation unit are electrically connected
It connects.
3. low standby power loss circuit according to claim 2, which is characterized in that the metal-oxide-semiconductor Q2 is N-channel depletion type
Metal-oxide-semiconductor.
4. low standby power loss circuit according to claim 1, which is characterized in that the filtering voltage regulation unit includes capacitor
C20 and zener diode D4, the first end of the capacitor C20 are electrically connected with the output end of the switch unit, the capacitor C20
Second end ground connection, the cathode of the zener diode D4 is electrically connected with the first end of the capacitor C20, the zener diode
The plus earth of D4.
5. low standby power loss circuit according to claim 2, which is characterized in that the voltage regulation unit includes zener diode
D3 and resistance R28, the confession with the first end of the resistance R28 and the main control unit respectively of the cathode of the zener diode D3
The electrical connection of the second end of the electrical connection of electricity output end, the second end of the resistance R28 and the resistance R22.
6. low standby power loss circuit according to claim 1, which is characterized in that the main control unit includes main control chip U5
And capacitor C15, one end of the capacitor C15 are electrically connected with the GND pin of the main control chip U5, the capacitor C15's is another
End is electrically connected with the VDD pin of the main control chip U5, the SWS pin of the main control chip U5 and the filtering voltage regulation unit
Output end electrical connection, the HCG pin of the main control chip U5 are electrically connected with the input terminal of the voltage regulation unit.
7. low standby power loss circuit according to claim 6, which is characterized in that the low standby power loss circuit further includes whole
Filter unit is flowed, the input terminal of the rectification filtering unit is electrically connected with one end of the alternating current input unit, the rectification
The output end of filter unit is electrically connected with the power input of the main control unit.
8. low standby power loss circuit according to claim 7, which is characterized in that the rectification filtering unit includes diode
D1 and filter capacitor C25, the anode of the diode D1 are electrically connected with the output end of the alternating current input unit, two pole
The cathode of pipe D1 is electrically connected with the power input of one end of the filter capacitor C25 and the main control unit respectively, the filter
The other end of wave capacitor C25 is grounded.
9. low standby power loss circuit according to claim 8, which is characterized in that the rectification filtering unit further includes resistance
R17, one end of the resistance R17 are electrically connected with the cathode of the diode D1, the other end of the resistance R17 respectively with it is described
The electrical connection of the power input of one end of filter capacitor C25 and the main control unit.
10. a kind of power switch system, which is characterized in that including low standby power loss described in any one of claim 1~9
Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920141524.0U CN209419478U (en) | 2019-01-25 | 2019-01-25 | Low standby power loss circuit and power switch system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920141524.0U CN209419478U (en) | 2019-01-25 | 2019-01-25 | Low standby power loss circuit and power switch system |
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| CN209419478U true CN209419478U (en) | 2019-09-20 |
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| CN201920141524.0U Active CN209419478U (en) | 2019-01-25 | 2019-01-25 | Low standby power loss circuit and power switch system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768699A (en) * | 2019-01-25 | 2019-05-17 | 惠州三华工业有限公司 | Low standby power loss circuit and power switch system |
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2019
- 2019-01-25 CN CN201920141524.0U patent/CN209419478U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768699A (en) * | 2019-01-25 | 2019-05-17 | 惠州三华工业有限公司 | Low standby power loss circuit and power switch system |
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