CN103425071B - Switching Power Supply energy efficiency control circuit - Google Patents
Switching Power Supply energy efficiency control circuit Download PDFInfo
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- CN103425071B CN103425071B CN201310359686.9A CN201310359686A CN103425071B CN 103425071 B CN103425071 B CN 103425071B CN 201310359686 A CN201310359686 A CN 201310359686A CN 103425071 B CN103425071 B CN 103425071B
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Abstract
The present invention relates to Switching Power Supply energy efficiency control circuit, it includes switching power circuit, in working order time, provides running voltage for holding circuit；Wake-up circuit, for when holding state, after receiving audio signal, drives on-off circuit conducting, so that power supply circuits provide running voltage by on-off circuit for PWM controller；And holding circuit, for in working order time, when receiving lasting audio signal, drive on-off circuit conducting the most constantly, after not receiving audio signal in certain Preset Time, on-off circuit is then driven to close, so that power supply circuits can not provide running voltage by on-off circuit for PWM controller.Common Switching Power Supply, by the detection to audio signal, is directly controlled by the present invention, it is achieved automatically into holding state and the function that automatically wakens up, and make standby energy consumption maintain the lowest level.
Description
Technical field
The present invention relates to energy efficiency control circuit, be specifically related to Switching Power Supply energy efficiency control circuit.
Background technology
The implementation of Energy Efficiency Standard (such as ErP), the design to audio-frequency power amplifier proposes new requirement.ErP requires that audio-frequency power amplifier, in the case of not using, through certain time, automatically into holding state, and can require that power consumption now is less than certain standard (such as 0.5W).In order to meet this requirement, method most commonly is the Switching Power Supply using and meeting green standard, and has the power amplifier chips of idle function.But, such scheme has raised the cost of product largely, and needs to import a large amount of new material, and this proposes bigger challenge just to upgrading existing product line.
Summary of the invention
It is an object of the invention to propose a kind of Switching Power Supply energy efficiency control circuit, it can solve the problem that cost is high.
In order to achieve the above object, the technical solution adopted in the present invention is as follows:
Switching Power Supply energy efficiency control circuit, it includes having the switching power circuit of PWM controller, wake-up circuit, holding circuit, on-off circuit and power supply circuits, switching power circuit, wake-up circuit and the electrical connection of power supply circuits Jun Yu city；
Described switching power circuit, in working order time, provides running voltage for holding circuit；
Described wake-up circuit, for when holding state, after receiving audio signal, drives on-off circuit conducting, so that power supply circuits provide running voltage by on-off circuit for PWM controller；
Described holding circuit, for in working order time, when receiving lasting audio signal, drive on-off circuit conducting the most constantly, after not receiving audio signal in certain Preset Time, on-off circuit is then driven to close, so that power supply circuits can not provide running voltage by on-off circuit for PWM controller；
Wherein,
Described duty is: PWM controller and holding circuit are both powered up work；
Described holding state is: PWM controller and the equal power down of holding circuit quit work.
Preferably, described holding circuit includes chip IC 8, electric capacity C108, electric capacity C62, resistance R132, resistance R116, resistance R117, resistance R121, audion Q12, electric capacity C38, resistance R122, resistance R124, diode D4, audion Q4, resistance R125, electric capacity C80, electric capacity C56, resistance R130, diode D12 and resistance R28；Electric capacity C108 ground connection is passed through in one end of electric capacity C62, one end of electric capacity C62 is used for receiving audio signal, the other end of electric capacity C62 is connected by the base stage of resistance R116 and audion Q12, the other end of electric capacity C62 passes through resistance R132 ground connection, and the other end of electric capacity C62 is connected also by the colelctor electrode of resistance R117 with audion Q12；The grounded emitter of audion Q12, the colelctor electrode of audion Q12 is connected with the feeder ear+VCC of switching power circuit by resistance R121, and the colelctor electrode of audion Q12 also passes sequentially through electric capacity C38, resistance R122 is connected with the base stage of audion Q4；The base stage of audion Q4 also passes sequentially through resistance R124, resistance R28 and is connected with the feeder ear+VCC of switching power circuit, and diode D4 is in parallel with resistance R124；The emitter stage of audion Q4 is connected with the feeder ear+VCC of switching power circuit by resistance R28；One end of the power end VDD and electric capacity C80 of chip IC 8 all emitter stages with audion Q4 are connected, the other end ground connection of electric capacity C80；One end of the input IN of chip IC 8, one end of electric capacity C56 and resistance R125 all colelctor electrodes with audion Q4 are connected, the other end of electric capacity C56 and the equal ground connection of the other end of resistance R125；The outfan OUT of chip IC 8 passes sequentially through resistance R130, diode D12 is connected with the first input end of on-off circuit；Described civil power includes input AC1 and input AC2.
Preferably, described wake-up circuit includes electric capacity C58, electric capacity C59, diode D6, diode D5, diode D7, diode D8, electric capacity C107, electric capacity C101, stabilivolt ZD4, audion Q13, resistance R104, electric capacity C112, diode D9, resistance R109, resistance R107, electric capacity C61, diode D10, resistance R108, electric capacity C111, diode D3, resistance R97, electric capacity C104, audion Q14, resistance R98, resistance R103, resistance R102, resistance R101, electric capacity C103, resistance R106 and electric capacity C208；Electric capacity C208 ground connection is passed through in one end of electric capacity C103, and one end of electric capacity C103 is used for receiving audio signal, and the other end of electric capacity C103 is connected by the base stage of resistance R98 and audion Q14, and the other end of electric capacity C103 is also by resistance R106 ground connection；The grounded emitter of audion Q14；Described civil power includes input AC1 and input AC2；Input AC1 passes sequentially through electric capacity C58, diode D8 is connected with the emitter stage of audion Q13, and electric capacity C58 passes through diode D6 ground connection；Input AC2 passes sequentially through electric capacity C59, diode D7 is connected with the emitter stage of audion Q13, and electric capacity C59 passes through diode D5 ground connection；One end of one end of electric capacity C107, one end of electric capacity C101 and stabilivolt ZD4 all emitter stages with audion Q13 are connected；The equal ground connection of the other end of the other end of electric capacity C107, the other end of electric capacity C101 and stabilivolt ZD4；One end of resistance R104 is connected with the colelctor electrode of audion Q13, and the other end of resistance R104 passes through electric capacity C112 ground connection, and the other end of resistance R104 is also connected with the first input end of on-off circuit；One end of resistance R107 is connected with the feeder ear+VCC of switching power circuit, and the other end of resistance R107 passes sequentially through electric capacity C61, electric capacity C111 ground connection；The negative electrode of diode D10 is connected with the other end of electric capacity R104, and the anode of diode D10 is connected between electric capacity C61 and electric capacity C111, and resistance R108 is in parallel with diode D10；The negative electrode of diode D3 is connected with the emitter stage of audion Q13, the anode of diode D3 is connected with the base stage of audion Q13, the anode of diode D3 also passes sequentially through resistance R97, electric capacity C104 is connected with the colelctor electrode of audion Q14, and resistance R103 is in parallel with diode D3；Feeder ear+the VCC of switching power circuit also passes sequentially through diode D9, resistance R109, resistance R102, resistance R101, resistance R106 ground connection, and the colelctor electrode of audion Q14 is additionally attached between resistance R102 and resistance R101；The emitter stage of audion Q13 is additionally attached between resistance R109 and resistance R102；The emitter stage of audion Q13 is also connected with the second input of on-off circuit.
Preferably, described on-off circuit includes resistance R92, resistance R105, electric capacity C106, stabilivolt ZD2, audion Q10, audion Q9, resistance R111, resistance R110, photoelectrical coupler IC9, resistance R114, resistance R115, resistance R99, electric capacity C39, resistance R86, audion Q5, audion Q8, resistance R112, resistance R85, stabilivolt ZD5, audion Q7 and resistance R77；One end of resistance R92 is connected with the emitter stage of audion Q13, and the other end of resistance R92 is connected by the electrode input end of resistance R105 and photoelectrical coupler IC9, and the cathode output end of photoelectrical coupler IC9 is connected with resistance R92 by stabilivolt ZD2；One end of electric capacity C106 is connected with the electrode input end of photoelectrical coupler IC9, and the other end of electric capacity C106 is connected with the cathode output end of photoelectrical coupler IC9；The emitter stage of audion Q10 is connected with the cathode output end of photoelectrical coupler IC9, the base stage of audion Q10 is connected with the colelctor electrode of audion Q9, the colelctor electrode of audion Q10 is connected by the emitter stage of resistance R111 and audion Q9, the grounded collector of audion Q10；The base stage of audion Q9 passes through resistance R110 ground connection；One end of resistance R92 is as the second input of on-off circuit, and the base stage of audion Q9 is as the first input end of on-off circuit；The emitter stage outfan of photoelectrical coupler IC9 passes through resistance R115 ground connection；The colelctor electrode input of photoelectrical coupler IC9 is connected by the base stage of resistance R114 and audion Q8, the colelctor electrode input of photoelectrical coupler IC9 also passes sequentially through resistance R114, resistance R99, resistance R112 are connected with the base stage of audion Q5, the emitter stage of audion Q5 is connected between resistance R99 and resistance R112, the colelctor electrode of audion Q5 is connected with the base stage of audion Q8, the grounded emitter of audion Q8；The base stage of audion Q8 is also by resistance R86 ground connection, and the colelctor electrode of audion Q5 is also by electric capacity C39 ground connection；The colelctor electrode of audion Q7 is connected by the emitter stage of resistance R85 and audion Q5, and the emitter stage of audion Q7 is by resistance R77 ground connection, and the base stage of audion Q7 is by stabilivolt ZD5 ground connection, and the base stage of audion Q7 also emitter stage with audion Q5 is connected；The voltage output end VDD of described power supply circuits is connected by the colelctor electrode of a resistance R113 and audion Q7, and the emitter stage of audion Q7 is connected with the power end VDD of PWM controller.
Preferably, described power supply circuits include resistance R222, resistance R123, diode D40, resistance R119, resistance R120, resistance R118, electric capacity C37 and electric capacity C36；Input AC1 passes sequentially through resistance R22, diode D40, resistance R119, resistance R120 are connected with resistance R113, and resistance R120 and resistance R113 connects the node voltage output end VDD as power supply circuits；Input AC1 is connected between resistance R222 and diode D40 also by resistance R123；Resistance R120 is the most respectively by resistance R118, electric capacity C37, electric capacity C36 ground connection.
There is advantages that
By the detection to audio signal, directly common Switching Power Supply is controlled, it is achieved automatically into holding state and the function that automatically wakens up, and make standby energy consumption maintain the lowest level.During use, only need directly to connect on common switching power circuit the energy efficiency control circuit of the present invention, without changing the switching power source chip meeting green standard, without changing the power amplifier chips with idle function, easily original non-ErP product can be upgraded, the biggest provides cost savings, and also accelerates the construction cycle.
Accompanying drawing explanation
Fig. 1 is the functional-block diagram that the present invention applies in audio-frequency power amplifier；
Fig. 2 is the functional-block diagram of the Switching Power Supply energy efficiency control circuit of the present invention；
Fig. 3 is the circuit diagram of the Switching Power Supply energy efficiency control circuit of the present invention；
Fig. 4 is the enlarged drawing of the switching power circuit in Fig. 3；
Fig. 5 is the enlarged drawing (part-structure is in Fig. 4) of the power supply circuits in Fig. 3；
Fig. 6 is the enlarged drawing of the on-off circuit in Fig. 3；
Fig. 7 is the enlarged drawing of the wake-up circuit in Fig. 3；
Fig. 8 is the enlarged drawing of the holding circuit in Fig. 3.
Detailed description of the invention
Below, in conjunction with accompanying drawing and detailed description of the invention, the invention will be further described.
As it is shown in figure 1, the present embodiment can be applicable in audio-frequency power amplifier.Energy efficiency control circuit 1 controls the duty of switching power circuit 2 according to the presence or absence of audio signal 100, and switching power circuit 2 is used for driving audio-frequency power amplifier 3 to work, so that audio signal 100 is processed by audio-frequency power amplifier 3, thus plays music.It should be noted that the switching power circuit 2 of the present embodiment is common switching power source chip, not having the switching power source chip of green functional, audio-frequency power amplifier 3 is also the common audio-frequency power amplifier not possessing idle function.
As shown in Figure 2, a kind of Switching Power Supply energy efficiency control circuit of the present embodiment, it includes having the switching power circuit 2 of PWM controller 21, wake-up circuit 11, holding circuit 12, on-off circuit 13 and power supply circuits 14, switching power circuit 2, wake-up circuit 11 and the electrical connection of power supply circuits 14 Jun Yu city.Described switching power circuit 2, in working order time, provides running voltage for holding circuit 12；Described wake-up circuit 11, for when holding state, after receiving audio signal 100, drives on-off circuit 13 to turn on, so that power supply circuits 14 provide running voltage by on-off circuit 13 for PWM controller 21；Described holding circuit 12, for in working order time, when receiving lasting audio signal 100, on-off circuit 13 is driven to turn on the most constantly, after not receiving audio signal 100 in certain Preset Time, then driving on-off circuit 13 to close, so that power supply circuits 14 can not provide running voltage by on-off circuit 13 for PWM controller 21, switching power circuit 2 is also due to PWM controller 21 power down quits work and quits work.Wherein, described duty is: PWM controller 21 and holding circuit 12 are both powered up work；Described holding state is: PWM controller 21 and the equal power down of holding circuit 12 quit work.
Such as Fig. 3 to Fig. 8, for the particular circuit configurations of a kind of Switching Power Supply energy efficiency control circuit of the present embodiment.
Described holding circuit 12 includes chip IC 8, electric capacity C108, electric capacity C62, resistance R132, resistance R116, resistance R117, resistance R121, audion Q12, electric capacity C38, resistance R122, resistance R124, diode D4, audion Q4, resistance R125, electric capacity C80, electric capacity C56, resistance R130, diode D12 and resistance R28；Electric capacity C108 ground connection is passed through in one end of electric capacity C62, one end of electric capacity C62 is used for receiving audio signal 100, the other end of electric capacity C62 is connected by the base stage of resistance R116 and audion Q12, the other end of electric capacity C62 passes through resistance R132 ground connection, and the other end of electric capacity C62 is connected also by the colelctor electrode of resistance R117 with audion Q12；The grounded emitter of audion Q12, the colelctor electrode of audion Q12 is connected with the feeder ear+VCC of switching power circuit 2 by resistance R121, and the colelctor electrode of audion Q12 also passes sequentially through electric capacity C38, resistance R122 is connected with the base stage of audion Q4；The base stage of audion Q4 also passes sequentially through resistance R124, resistance R28 and is connected with the feeder ear+VCC of switching power circuit 2, and diode D4 is in parallel with resistance R124；The emitter stage of audion Q4 is connected with the feeder ear+VCC of switching power circuit 2 by resistance R28；One end of the power end VDD and electric capacity C80 of chip IC 8 all emitter stages with audion Q4 are connected, the other end ground connection of electric capacity C80；One end of the input IN of chip IC 8, one end of electric capacity C56 and resistance R125 all colelctor electrodes with audion Q4 are connected, the other end of electric capacity C56 and the equal ground connection of the other end of resistance R125；The outfan OUT of chip IC 8 passes sequentially through resistance R130, diode D12 is connected with the first input end of on-off circuit 13；Described civil power includes input AC1 and input AC2.
Described wake-up circuit 11 includes electric capacity C58, electric capacity C59, diode D6, diode D5, diode D7, diode D8, electric capacity C107, electric capacity C101, stabilivolt ZD4, audion Q13, resistance R104, electric capacity C112, diode D9, resistance R109, resistance R107, electric capacity C61, diode D10, resistance R108, electric capacity C111, diode D3, resistance R97, electric capacity C104, audion Q14, resistance R98, resistance R103, resistance R102, resistance R101, electric capacity C103, resistance R106 and electric capacity C208；Electric capacity C208 ground connection is passed through in one end of electric capacity C103, and one end of electric capacity C103 is used for receiving audio signal 100, and the other end of electric capacity C103 is connected by the base stage of resistance R98 and audion Q14, and the other end of electric capacity C103 is also by resistance R106 ground connection；The grounded emitter of audion Q14；Input AC1 passes sequentially through electric capacity C58, diode D8 is connected with the emitter stage of audion Q13, and electric capacity C58 passes through diode D6 ground connection；Input AC2 passes sequentially through electric capacity C59, diode D7 is connected with the emitter stage of audion Q13, and electric capacity C59 passes through diode D5 ground connection；One end of one end of electric capacity C107, one end of electric capacity C101 and stabilivolt ZD4 all emitter stages with audion Q13 are connected；The equal ground connection of the other end of the other end of electric capacity C107, the other end of electric capacity C101 and stabilivolt ZD4；One end of resistance R104 is connected with the colelctor electrode of audion Q13, and the other end of resistance R104 passes through electric capacity C112 ground connection, and the other end of resistance R104 also first input end with on-off circuit 13 is connected；One end of resistance R107 is connected with the feeder ear+VCC of switching power circuit 2, and the other end of resistance R107 passes sequentially through electric capacity C61, electric capacity C111 ground connection；The negative electrode of diode D10 is connected with the other end of electric capacity R104, and the anode of diode D10 is connected between electric capacity C61 and electric capacity C111, and resistance R108 is in parallel with diode D10；The negative electrode of diode D3 is connected with the emitter stage of audion Q13, the anode of diode D3 is connected with the base stage of audion Q13, the anode of diode D3 also passes sequentially through resistance R97, electric capacity C104 is connected with the colelctor electrode of audion Q14, and resistance R103 is in parallel with diode D3；Feeder ear+the VCC of switching power circuit 2 also passes sequentially through diode D9, resistance R109, resistance R102, resistance R101, resistance R106 ground connection, and the colelctor electrode of audion Q14 is additionally attached between resistance R102 and resistance R101；The emitter stage of audion Q13 is additionally attached between resistance R109 and resistance R102；The emitter stage of audion Q13 is also connected with the second input of on-off circuit 13.
Described on-off circuit 13 includes resistance R92, resistance R105, electric capacity C106, stabilivolt ZD2, audion Q10, audion Q9, resistance R111, resistance R110, photoelectrical coupler IC9, resistance R114, resistance R115, resistance R99, electric capacity C39, resistance R86, audion Q5, audion Q8, resistance R112, resistance R85, stabilivolt ZD5, audion Q7 and resistance R77；One end of resistance R92 is connected with the emitter stage of audion Q13, and the other end of resistance R92 is connected by the electrode input end of resistance R105 and photoelectrical coupler IC9, and the cathode output end of photoelectrical coupler IC9 is connected with resistance R92 by stabilivolt ZD2；One end of electric capacity C106 is connected with the electrode input end of photoelectrical coupler IC9, and the other end of electric capacity C106 is connected with the cathode output end of photoelectrical coupler IC9；The emitter stage of audion Q10 is connected with the cathode output end of photoelectrical coupler IC9, the base stage of audion Q10 is connected with the colelctor electrode of audion Q9, the colelctor electrode of audion Q10 is connected by the emitter stage of resistance R111 and audion Q9, the grounded collector of audion Q10；The base stage of audion Q9 passes through resistance R110 ground connection；One end of resistance R92 is as the second input of on-off circuit 13, and the base stage of audion Q9 is as the first input end of on-off circuit 13；The emitter stage outfan of photoelectrical coupler IC9 passes through resistance R115 ground connection；The colelctor electrode input of photoelectrical coupler IC9 is connected by the base stage of resistance R114 and audion Q8, the colelctor electrode input of photoelectrical coupler IC9 also passes sequentially through resistance R114, resistance R99, resistance R112 are connected with the base stage of audion Q5, the emitter stage of audion Q5 is connected between resistance R99 and resistance R112, the colelctor electrode of audion Q5 is connected with the base stage of audion Q8, the grounded emitter of audion Q8；The base stage of audion Q8 is also by resistance R86 ground connection, and the colelctor electrode of audion Q5 is also by electric capacity C39 ground connection；The colelctor electrode of audion Q7 is connected by the emitter stage of resistance R85 and audion Q5, and the emitter stage of audion Q7 is by resistance R77 ground connection, and the base stage of audion Q7 is by stabilivolt ZD5 ground connection, and the base stage of audion Q7 also emitter stage with audion Q5 is connected；The voltage output end VDD of described power supply circuits 14 is connected by the colelctor electrode of a resistance R113 and audion Q7, the emitter stage of audion Q7 and the chip IC 40 in PWM controller 21(i.e. figure) power end VDD be connected.
Described power supply circuits include resistance R222, resistance R123, diode D40, resistance R119, resistance R120, resistance R118, electric capacity C37 and electric capacity C36；Input AC1 passes sequentially through resistance R22, diode D40, resistance R119, resistance R120 are connected with resistance R113, and resistance R120 and resistance R113 connects the node voltage output end VDD as power supply circuits 14；Input AC1 is connected between resistance R222 and diode D40 also by resistance R123；Resistance R120 is the most respectively by resistance R118, electric capacity C37, electric capacity C36 ground connection.
Owing to the switching power circuit 2 of the present embodiment is normal conventional circuit, do not repeat them here its operation principle.The work process of the Switching Power Supply energy efficiency control circuit of the present embodiment is as follows:
1, normal operating conditions
Audio signal 100 is amplified through audion Q12, thus turn-on transistor Q4, the input signal of the input IN of chip IC 8 is high level so that the outfan OUT of chip IC 8 exports high level, and then turn-on transistor Q9 and audion Q10.Now the diode of photoelectrical coupler IC9 has electric current to pass through, photoelectrical coupler IC9 turns on, audion Q5 and audion Q8 cut-off, audion Q7 turns on, PWM controller 21(i.e. chip IC 40) power end VDD obtain the normal power supply of power supply circuits 14, and then making switching power circuit 2 the most normally work, switching power circuit 2 normally provides running voltage for chip IC 8, and whole system is properly functioning.
2, holding state is entered
When not having audio signal 100, audion Q4 ends, and the input signal of the input IN of chip IC 8 is low level.The now timer initiation within control chip IC8, if input signal is continuously after low level exceedes certain Preset Time (such as 60 minutes), the outfan OUT output low level of chip IC 8, again owing to wake-up circuit 11 is without the driving of audio signal 100, making audion Q9 and audion Q10 cut-off, the diode of photoelectrical coupler IC9 does not has electric current to pass through, and photoelectrical coupler IC9 ends, so that audion Q5 and audion Q8 conducting, audion Q7 ends.The supply line of PWM controller 21 is cut off, and power supply circuits 14 provide running voltage can not to PWM controller 21.After the voltage on electric capacity C43 drops to the brownout voltage of PWM controller 21, PWM controller 21 quits work, and switching power circuit 2 is stopped power supply, so that the stand-by power consumption of whole system maintains the least level.
3, wake up up
When system is in holding state, the rectification circuit being made up of electric capacity C58, electric capacity C59, diode D5, diode D6, diode D7, diode D8, electric capacity C107, electric capacity C101 and stabilivolt ZD4 maintains a voltage in secondary, provides power supply to wake-up circuit 11.If there being music signal 100 to input, audio signal 100 is amplified through audion Q14, thus turn-on transistor Q13, and then turn-on transistor Q9 and audion Q10.Now the diode of photoelectrical coupler IC9 has electric current to pass through, photoelectrical coupler IC9 turns on, audion Q5 and audion Q8 cut-off, audion Q7 turns on, the power end VDD of PWM controller 21 obtains normal power supply, when the voltage on electric capacity C43 rises to the startup voltage of PWM controller 21 by resistance R52, resistance R65, audion Q7, whole system recovers properly functioning.
For a person skilled in the art, can technical scheme as described above and design, make other various corresponding changes and deformation, and within all these changes and deformation all should belong to the protection domain of the claims in the present invention.
Claims (4)
1. Switching Power Supply energy efficiency control circuit, it is characterised in that include that there is opening of PWM controller
Close power circuit, wake-up circuit, holding circuit, on-off circuit and power supply circuits, open
Close power circuit, wake-up circuit and the electrical connection of power supply circuits Jun Yu city；
Described switching power circuit, in working order time, for holding circuit offer work electricity
Pressure；
Described wake-up circuit, for when holding state, after receiving audio signal, drives
On-off circuit turns on, so that power supply circuits provide work by on-off circuit for PWM controller
Make voltage；
Described holding circuit, in working order time, when receiving lasting audio signal,
Drive on-off circuit conducting the most constantly, when not receiving sound in certain Preset Time
Frequently after signal, then on-off circuit is driven to close, so that power supply circuits can not be by switch electricity
Road provides running voltage for PWM controller；
Wherein,
Described duty is: PWM controller and holding circuit are both powered up work；
Described holding state is: PWM controller and the equal power down of holding circuit quit work；
Described holding circuit include chip IC 8, electric capacity C108, electric capacity C62, resistance R132,
Resistance R116, resistance R117, resistance R121, audion Q12, electric capacity C38, resistance
R122, resistance R124, diode D4, audion Q4, resistance R125, electric capacity C80,
Electric capacity C56, resistance R130, diode D12 and resistance R28；One end of electric capacity C62 leads to
Crossing electric capacity C108 ground connection, one end of electric capacity C62 is used for receiving audio signal, electric capacity C62
The other end be connected by the base stage of resistance R116 and audion Q12, electric capacity C62's is another
One end pass through resistance R132 ground connection, the other end of electric capacity C62 also by resistance R117 with
The colelctor electrode of audion Q12 connects；The grounded emitter of audion Q12, audion Q12
Colelctor electrode be connected with the feeder ear+VCC of switching power circuit by resistance R121, three poles
The colelctor electrode of pipe Q12 also passes sequentially through the base of electric capacity C38, resistance R122 and audion Q4
Pole connects；The base stage of audion Q4 also passes sequentially through resistance R124, resistance R28 and switch
Feeder ear+the VCC of power circuit connects, and diode D4 is in parallel with resistance R124；Three poles
The emitter stage of pipe Q4 is connected with the feeder ear+VCC of switching power circuit by resistance R28；
One end of the power end VDD and electric capacity C80 of chip IC 8 all with the emitter stage of audion Q4
Connect, the other end ground connection of electric capacity C80；The input IN of chip IC 8, electric capacity C56
One end and one end all colelctor electrodes with audion Q4 of resistance R125 be connected, electric capacity C56
The other end and the equal ground connection of the other end of resistance R125；The outfan OUT of chip IC 8 depends on
Secondary it is connected with the first input end of on-off circuit by resistance R130, diode D12；Institute
State civil power and include input AC1 and input AC2.
2. Switching Power Supply energy efficiency control circuit as claimed in claim 1, it is characterised in that described
Wake-up circuit includes electric capacity C58, electric capacity C59, diode D6, diode D5, two poles
Pipe D7, diode D8, electric capacity C107, electric capacity C101, stabilivolt ZD4, audion
Q13, resistance R104, electric capacity C112, diode D9, resistance R109, resistance R107,
Electric capacity C61, diode D10, resistance R108, electric capacity C111, diode D3, resistance
R97, electric capacity C104, audion Q14, resistance R98, resistance R103, resistance R102,
Resistance R101, electric capacity C103, resistance R106 and electric capacity C208；One end of electric capacity C103
By electric capacity C208 ground connection, one end of electric capacity C103 is used for receiving audio signal, electric capacity
The other end of C103 is connected by the base stage of resistance R98 and audion Q14, electric capacity C103
The other end also by resistance R106 ground connection；The grounded emitter of audion Q14；Described
Civil power includes input AC1 and input AC2；Input AC1 pass sequentially through electric capacity C58,
Diode D8 is connected with the emitter stage of audion Q13, and electric capacity C58 passes through diode D6
Ground connection；Input AC2 passes sequentially through electric capacity C59, diode D7 and audion Q13's
Emitter stage connects, and electric capacity C59 passes through diode D5 ground connection；One end of electric capacity C107,
One end of electric capacity C101 and one end of stabilivolt ZD4 are all with the emitter stage of audion Q13 even
Connect；The other end of electric capacity C107, the other end of electric capacity C101 and stabilivolt ZD4's is another
The equal ground connection in one end；One end of resistance R104 is connected with the colelctor electrode of audion Q13, resistance
The other end of R104 pass through electric capacity C112 ground connection, the other end of resistance R104 also with switch
The first input end of circuit connects；One end of resistance R107 and the power supply of switching power circuit
End+VCC connects, and the other end of resistance R107 passes sequentially through electric capacity C61, electric capacity C111
Ground connection；The negative electrode of diode D10 is connected with the other end of electric capacity R104, diode D10
Anode be connected between electric capacity C61 and electric capacity C111, resistance R108 and diode D10
In parallel；The negative electrode of diode D3 is connected with the emitter stage of audion Q13, diode D3
Anode be connected with the base stage of audion Q13, the anode of diode D3 also passes sequentially through electricity
Resistance R97, electric capacity C104 are connected with the colelctor electrode of audion Q14, resistance R103 and two poles
Pipe D3 is in parallel；Feeder ear+the VCC of switching power circuit also pass sequentially through diode D9,
Resistance R109, resistance R102, resistance R101, resistance R106 ground connection, audion Q14
Colelctor electrode be additionally attached between resistance R102 and resistance R101；Audion Q13 sends out
Emitter-base bandgap grading is additionally attached between resistance R109 and resistance R102；The emitter stage of audion Q13
Also it is connected with the second input of on-off circuit.
3. Switching Power Supply energy efficiency control circuit as claimed in claim 1 or 2, it is characterised in that
Described on-off circuit include resistance R92, resistance R105, electric capacity C106, stabilivolt ZD2,
Audion Q10, audion Q9, resistance R111, resistance R110, photoelectrical coupler IC9,
Resistance R114, resistance R115, resistance R99, electric capacity C39, resistance R86, audion
Q5, audion Q8, resistance R112, resistance R85, stabilivolt ZD5, audion Q7 and
Resistance R77；One end of resistance R92 is connected with the emitter stage of audion Q13, resistance R92
The other end be connected by the electrode input end of resistance R105 and photoelectrical coupler IC9, light
The cathode output end of electric coupler IC9 is connected with resistance R92 by stabilivolt ZD2；Electricity
The one end holding C106 is connected with the electrode input end of photoelectrical coupler IC9, electric capacity C106
The other end be connected with the cathode output end of photoelectrical coupler IC9；Audion Q10 sends out
Emitter-base bandgap grading is connected with the cathode output end of photoelectrical coupler IC9, the base stage of audion Q10 with
The colelctor electrode of audion Q9 connects, the colelctor electrode of audion Q10 by resistance R111 with
The emitter stage of audion Q9 connects, the grounded collector of audion Q10；Audion Q9
Base stage by resistance R110 ground connection；One end of resistance R92 is as the second of on-off circuit
Input, the base stage of audion Q9 is as the first input end of on-off circuit；Photoelectric coupling
The emitter stage outfan of device IC9 passes through resistance R115 ground connection；The collection of photoelectrical coupler IC9
Electrode input is connected by the base stage of resistance R114 and audion Q8, photoelectrical coupler
The colelctor electrode input of IC9 also passes sequentially through resistance R114, resistance R99, resistance R112
Be connected with the base stage of audion Q5, the emitter stage of audion Q5 be connected to resistance R99 with
Between resistance R112, the colelctor electrode of audion Q5 is connected with the base stage of audion Q8, and three
The grounded emitter of pole pipe Q8；The base stage of audion Q8 also by resistance R86 ground connection,
The colelctor electrode of audion Q5 is also by electric capacity C39 ground connection；The colelctor electrode of audion Q7 leads to
The emitter stage crossing resistance R85 and audion Q5 is connected, and the emitter stage of audion Q7 passes through
Resistance R77 ground connection, the base stage of audion Q7 passes through stabilivolt ZD5 ground connection, audion Q7
Base stage also emitter stage with audion Q5 be connected；The voltage output end of described power supply circuits
VDD is connected by the colelctor electrode of a resistance R113 and audion Q7, and audion Q7 sends out
Emitter-base bandgap grading is connected with the power end VDD of PWM controller.
4. Switching Power Supply energy efficiency control circuit as claimed in claim 3, it is characterised in that described
Power supply circuits include resistance R222, resistance R123, diode D40, resistance R119, electricity
Resistance R120, resistance R118, electric capacity C37 and electric capacity C36；Input AC1 passes sequentially through
Resistance R22, diode D40, resistance R119, resistance R120 are connected with resistance R113,
Resistance R120 and resistance R113 connects the node voltage output end as power supply circuits
VDD；Input AC1 is connected to resistance R222 and diode D40 also by resistance R123
Between；Resistance R120 is the most respectively by resistance R118, electric capacity C37, electric capacity C36 ground connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310359686.9A CN103425071B (en) | 2013-08-16 | 2013-08-16 | Switching Power Supply energy efficiency control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310359686.9A CN103425071B (en) | 2013-08-16 | 2013-08-16 | Switching Power Supply energy efficiency control circuit |
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| CN103425071A CN103425071A (en) | 2013-12-04 |
| CN103425071B true CN103425071B (en) | 2016-08-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105449991B (en) * | 2015-12-21 | 2018-06-08 | 广东美的厨房电器制造有限公司 | Low-power dissipation standby device and electrical equipment |
| CN106300648B (en) * | 2016-10-21 | 2018-12-04 | 成都前锋电子仪器有限责任公司 | A kind of electric power management circuit |
| CN107456161B (en) * | 2017-08-25 | 2020-08-14 | 江苏美的清洁电器股份有限公司 | Dust collector and power supply control circuit for dust collector |
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| CN2694667Y (en) * | 2004-03-22 | 2005-04-20 | 深圳创维－Rgb电子有限公司 | Standby circuit and TV set containing the circuit |
| CN201414082Y (en) * | 2009-05-05 | 2010-02-24 | 冠捷投资有限公司 | Power supply |
| WO2009154985A3 (en) * | 2008-05-27 | 2010-03-18 | Asic Advantage, Inc. | Power supply with standby power |
| CN102780401A (en) * | 2012-07-25 | 2012-11-14 | 深圳市茂宏电气有限公司 | Intelligent control circuit and intelligent control method of switch power supply efficiency |
| CN203465544U (en) * | 2013-08-16 | 2014-03-05 | 深圳市茂宏电气有限公司 | Switch power supply energy efficiency control circuit |
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2013
- 2013-08-16 CN CN201310359686.9A patent/CN103425071B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2694667Y (en) * | 2004-03-22 | 2005-04-20 | 深圳创维－Rgb电子有限公司 | Standby circuit and TV set containing the circuit |
| WO2009154985A3 (en) * | 2008-05-27 | 2010-03-18 | Asic Advantage, Inc. | Power supply with standby power |
| CN201414082Y (en) * | 2009-05-05 | 2010-02-24 | 冠捷投资有限公司 | Power supply |
| CN102780401A (en) * | 2012-07-25 | 2012-11-14 | 深圳市茂宏电气有限公司 | Intelligent control circuit and intelligent control method of switch power supply efficiency |
| CN203465544U (en) * | 2013-08-16 | 2014-03-05 | 深圳市茂宏电气有限公司 | Switch power supply energy efficiency control circuit |
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