CN204615649U - DC voltage-stabilizing transducer - Google Patents
DC voltage-stabilizing transducer Download PDFInfo
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- CN204615649U CN204615649U CN201520133011.7U CN201520133011U CN204615649U CN 204615649 U CN204615649 U CN 204615649U CN 201520133011 U CN201520133011 U CN 201520133011U CN 204615649 U CN204615649 U CN 204615649U
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Abstract
The utility model provides a kind of DC voltage-stabilizing transducer, comprises bypass and the voltage stabilizing branch road of electrical connection in parallel; When the input voltage of vehicle power falls, described bypass cut-off, described input voltage exports after described voltage stabilizing branch road boosting; When the input voltage of vehicle power gos up to rated value, described by-path turn-on, described input voltage exports after described bypass.Therefore, DC voltage-stabilizing transducer described in the utility model, before bypass and voltage stabilizing branch road switch, in handoff procedure and after switching, the all equal ripple disable of electric current in circuit, can not produce fluctuation voltage because of current fluctuation, energy consumption is low, can complete switching between bypass and voltage stabilizing branch road according to Vehicular behavior, for mobile unit provides stable voltage, improve the Experience Degree of user.
Description
Technical field
The utility model relates to field of automobile, relates in particular to the DC voltage-stabilizing transducer in a kind of intelligent start/stop system.
Background technology
Idling refers to that engine operates in uncharge situation, only need overcome the frictional resistance of therein parts, not external power output.The phenomenon of idling, be namely car (when such as vehicle is in parked state) as you were, engine, but still in running, the friction that the mechanical power that now gasoline combustion produces all is used in inner body has consumed.
Along with the development of automobile industry, more and more higher to the requirement of the energy-saving and emission-reduction of automobile.Intelligent start/stop system, can be down to minimum by the oil consumption of automobile in idling process, thus reach the effect of energy-saving and emission-reduction.
Automobile is when the speed of a motor vehicle is zero after idling a period of time, engine will enter low-speed running or halted state, again trigger cell voltage when starting and can occur Voltage Drop phenomenon due to the big current of ignition point generation, at this moment, the voltage stabilizing branch road of the DC voltage-stabilizing transducer in intelligent start/stop system is started working, output voltage can be kept to maintain 12V export, thus guarantee that the light of rear end instrument desk does not glimmer, the sound of automobile audio does not pause sense.When cell voltage gos up to more than 12V, DC voltage-stabilizing transducer switches to bypass, can ensure that rear end power supply unit normally runs.
But in prior art, when carrying out handover operation in DC voltage-stabilizing transducer between voltage stabilizing branch road and bypass, larger electric current can be produced, cause energy consumption comparatively large, be unfavorable for energy-saving and emission-reduction.
Utility model content
For this reason, technical problem to be solved in the utility model is in prior art, can produce larger electric current when carrying out handover operation in DC voltage-stabilizing transducer between voltage stabilizing branch road and bypass, causes energy consumption comparatively large, is unfavorable for energy-saving and emission-reduction.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
The utility model provides a kind of DC voltage-stabilizing transducer, comprising: the bypass of electrical connection in parallel and voltage stabilizing branch road;
When the input voltage of vehicle power falls, described bypass cut-off, described input voltage exports after described voltage stabilizing branch road boosting; When the input voltage of vehicle power gos up to rated value, described by-path turn-on, described input voltage exports after described bypass.
DC voltage-stabilizing transducer described in the utility model, described bypass comprises the first metal-oxide-semiconductor Q1, trigger U1 and the first diode D1;
Described trigger U1 comprises the first output, second output and the 3rd output, the input of described first output and described first metal-oxide-semiconductor Q1 couples, the output of described second output and described first metal-oxide-semiconductor Q1 couples, the control end of described 3rd output and described first metal-oxide-semiconductor Q1 couples, the input of described first metal-oxide-semiconductor Q1 is the input of described bypass, the output of described first metal-oxide-semiconductor Q1 is the output of described bypass, the positive pole of described first diode D1 and the input of described first metal-oxide-semiconductor Q1 couple, the negative pole of described first diode D1 and the output of described first metal-oxide-semiconductor Q1 couple,
When voltage higher than the output of described first metal-oxide-semiconductor Q1 of the input terminal voltage of described first metal-oxide-semiconductor Q1, the 3rd output of described trigger U1 exports the first level, described first metal-oxide-semiconductor Q1 conducting to the control end of described first metal-oxide-semiconductor Q1; Otherwise the 3rd output of described trigger U1 exports second electrical level to the control end of described first metal-oxide-semiconductor Q1, and described first metal-oxide-semiconductor Q1 ends.
DC voltage-stabilizing transducer described in the utility model, described trigger U1 is LM5050 chip, the pin 4 of described LM5050 chip is first output of described trigger U1, couple with the input of described first metal-oxide-semiconductor Q1, the pin 6 of described LM5050 chip is second output of described trigger U1, couple with the output of described first metal-oxide-semiconductor Q1, the pin 5 of described LM5050 chip is the 3rd output of described trigger U1, couples with the control end of described first metal-oxide-semiconductor Q1.
DC voltage-stabilizing transducer described in the utility model, described voltage stabilizing branch road comprises: half-bridge driven booster circuit and boost pressure controller U2, when after vehicle launch, described boost pressure controller U2 controls described half-bridge driven booster circuit 21 and exports after described input voltage boosting.
DC voltage-stabilizing transducer described in the utility model, described half-bridge driven booster circuit comprises the second metal-oxide-semiconductor Q2, the 3rd metal-oxide-semiconductor Q3, the first inductance L 1, second inductance L 2, first electrochemical capacitor C1, the second electrochemical capacitor C2, the 3rd electrochemical capacitor C3, the first shunt capacitance group 211 and the second shunt capacitance group 212;
Described boost pressure controller U2 comprises the first output and the second output, couples respectively with the control end of described second metal-oxide-semiconductor Q2 and the control end of described 3rd metal-oxide-semiconductor Q3;
A common port of described first shunt capacitance group is the input of described voltage stabilizing branch road, another common end grounding, described first electrochemical capacitor C1 is in parallel with described first shunt capacitance group, the positive pole of described first electrochemical capacitor C1 and one end of described first inductance L 1 couple, the other end of described first inductance L 1 and the input of described second metal-oxide-semiconductor Q2 couple, the output head grounding of described second metal-oxide-semiconductor Q2, the input of described 3rd metal-oxide-semiconductor Q3 and the input of described second metal-oxide-semiconductor Q2 couple, the output of described 3rd metal-oxide-semiconductor Q3 and a common port of described second shunt capacitance group couple, another common end grounding of described second shunt capacitance group, described second electrochemical capacitor C2 is in parallel with described second shunt capacitance group, the positive pole of described second electrochemical capacitor C2 and one end of described second inductance L 2 couple, the other end of described second inductance L 2 couples with the described positive pole of the 3rd electrochemical capacitor C3 and the output of described bypass simultaneously, the positive pole of described 3rd electrochemical capacitor C3 is the output of described voltage stabilizing branch road, the minus earth of described 3rd electrochemical capacitor C3.
DC voltage-stabilizing transducer described in the utility model, described boost pressure controller U2 is LM5122 chip, the pin 16 of described LM5122 chip is first output of described boost pressure controller U2, the pin 19 of described LM5122 chip is second output of described boost pressure controller U2, couples respectively with the control end of described second metal-oxide-semiconductor Q2 and the control end of described 3rd metal-oxide-semiconductor Q3.
DC voltage-stabilizing transducer described in the utility model, the electric capacity in described second shunt capacitance group is more than 4.
DC voltage-stabilizing transducer described in the utility model, also comprises reference voltage circuit, couples with the output of described bypass and described voltage stabilizing branch road, for described bypass and described voltage stabilizing branch road provide reference voltage.
DC voltage-stabilizing transducer described in the utility model; also comprise the first protective circuit; couple with the output of described vehicle power, for the input voltage of described vehicle power is inputted described bypass and described voltage stabilizing branch road after transient voltage suppression, filtering process.
DC voltage-stabilizing transducer described in the utility model, also comprises the second protective circuit, couples with the output of described bypass and described voltage stabilizing branch road, exports through filtering, transient voltage for the voltage described bypass and described voltage stabilizing branch road exported after suppressing process.
Technique scheme of the present utility model has the following advantages compared to existing technology:
The utility model provides a kind of DC voltage-stabilizing transducer, comprises bypass and the voltage stabilizing branch road of electrical connection in parallel; When the input voltage of vehicle power falls, described bypass cut-off, described input voltage exports after described voltage stabilizing branch road boosting; When the input voltage of vehicle power gos up to rated value, described by-path turn-on, described input voltage exports after described bypass.Therefore, DC voltage-stabilizing transducer described in the utility model, before bypass and voltage stabilizing branch road switch, in handoff procedure and after switching, the all equal ripple disable of electric current in circuit, can not produce fluctuation voltage because of current fluctuation, energy consumption is low, can complete switching between bypass and voltage stabilizing branch road according to Vehicular behavior, for mobile unit provides stable voltage, improve the Experience Degree of user.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the structured flowchart of DC voltage-stabilizing transducer described in the utility model;
Fig. 2 is the circuit theory diagrams of DC voltage-stabilizing transducer described in the utility model.
In figure, Reference numeral is expressed as: 1-bypass, 2-voltage stabilizing branch road, 3-reference voltage circuit, 4-first protective circuit, 5-second protective circuit, 21-half-bridge driven booster circuit, 211-first shunt capacitance group, 212-second shunt capacitance group.
Embodiment
Present embodiments provide a kind of DC voltage-stabilizing transducer, as shown in Figure 1, comprising: the bypass 1 of electrical connection in parallel and voltage stabilizing branch road 2; When the input voltage of vehicle power falls, described bypass 1 ends, and described input voltage exports after described voltage stabilizing branch road 2 boosts; When the input voltage of vehicle power gos up to rated value, described bypass 1 conducting, described input voltage exports after described bypass 1.
Particularly, when automobile engine starting, the voltage of vehicle power (such as storage battery or electrokinetic cell) can cause Voltage Drop phenomenon due to the big current of ignition point generation, now, bypass 1 will end and switches to voltage stabilizing branch road 2, the input voltage of vehicle power is exported after voltage stabilizing branch road 2 boosts, maintain stable voltage and export (being generally 12V), the phenomenon such as light flash, the pause of automobile audio sound of the rear vehicle end instrument desk that voltage drop can be avoided to cause, brings good driving to experience to user.Because bypass 1 and voltage stabilizing branch road 2 are independent operatings in parallel, therefore when bypass 1 ends, input voltage will enter into after voltage stabilizing branch road 2 boosts and export, when the input voltage of vehicle power gos up to rated value (being generally 12V), bypass 1 conducting, input power will export after bypass 1, between bypass 1 and voltage stabilizing branch road 2 before the handover, in handoff procedure and after switching, the all equal ripple disable of electric current in circuit, fluctuation voltage can not be produced because of current fluctuation, energy consumption is low, is conducive to energy-saving and emission-reduction.
Preferably, as shown in Figure 1 and Figure 2, described bypass 1 can comprise the first metal-oxide-semiconductor Q1, trigger U1 and the first diode D1;
Described trigger U1 comprises the first output, second output and the 3rd output, the input of described first output and described first metal-oxide-semiconductor Q1 couples, the output of described second output and described first metal-oxide-semiconductor Q1 couples, the control end of described 3rd output and described first metal-oxide-semiconductor Q1 couples, the input of described first metal-oxide-semiconductor Q1 is the input of described bypass 1, the output of described first metal-oxide-semiconductor Q1 is the output of described bypass 1, the positive pole of described first diode D1 and the input of described first metal-oxide-semiconductor Q1 couple, the negative pole of described first diode D1 and the output of described first metal-oxide-semiconductor Q1 couple,
When voltage higher than the output of described first metal-oxide-semiconductor Q1 of the input terminal voltage of described first metal-oxide-semiconductor Q1, the 3rd output of described trigger U1 exports the first level, described first metal-oxide-semiconductor Q1 conducting to the control end of described first metal-oxide-semiconductor Q1; Otherwise the 3rd output of described trigger U1 exports second electrical level to the control end of described first metal-oxide-semiconductor Q1, and described first metal-oxide-semiconductor Q1 ends.
In practical application, when described first metal-oxide-semiconductor Q1 is N-channel MOS pipe, the first level is high level, second electrical level is low level, it will be appreciated by those skilled in the art that the first level is low level, second electrical level is high level is also feasible, such as, when the first metal-oxide-semiconductor Q1 is P channel MOS tube.Below with the first level for high level, second electrical level is low level is that example is described in detail.
Particularly, when the moment of vehicle launch, input voltage falls, now the input terminal voltage of the first metal-oxide-semiconductor Q1 is lower than the voltage of the output of the first metal-oxide-semiconductor Q1, makes the voltage of first output of trigger U1 also can lower than the voltage of its second output, and now the 3rd output of trigger U1 will to the control end output low level of the first metal-oxide-semiconductor Q1, thus the first metal-oxide-semiconductor Q1 is ended, also namely bypass 1 ends, and bypass 1 ends, and input voltage will export after voltage stabilizing branch road 2 boosts, after in several seconds, when the voltage recovery of vehicle power is to rated value (12V), the input terminal voltage of the first metal-oxide-semiconductor Q1 is higher than the voltage of the output of the first metal-oxide-semiconductor Q1, make the voltage of first output of trigger U1 also can higher than the voltage of its second output, now the 3rd output of trigger U1 will export high level to the control end of the first metal-oxide-semiconductor Q1, thus make the first metal-oxide-semiconductor Q1 conducting, also i.e. bypass 1 conducting, because approximate zero impedance after the first metal-oxide-semiconductor Q1 conducting, therefore input voltage will export through bypass 1, bypass 1 is switched back again by voltage stabilizing branch road 2, bypass 1 and voltage stabilizing branch road 2 are before the handover, in handoff procedure and after switching, the all equal ripple disable of electric current in circuit, fluctuation voltage can not be produced because of current fluctuation, the zero current achieving bypass 1 and voltage stabilizing branch road 2 switches, energy consumption is low.
Preferably, described trigger U1 can be LM5050 chip, the pin 4 of described LM5050 chip is first output of described trigger U1, couple with the input of described first metal-oxide-semiconductor Q1, the pin 6 of described LM5050 chip is second output of described trigger U1, couple with the output of described first metal-oxide-semiconductor Q1, the pin 5 of described LM5050 chip is the 3rd output of described trigger U1, couples with the control end of described first metal-oxide-semiconductor Q1.
In embody rule, because when the hardware circuit of LM5050 built-in chip type makes voltage higher than its pin 6 place of voltage when its pin 4 place, its pin 5 will export high level; Otherwise its pin 5 will output low level, therefore using LM5050 chip as trigger U1, without the need to compiler, the syndeton by means of only hardware circuit can realize carrying out conducting according to driving situation or closing the above-mentioned functions of the first metal-oxide-semiconductor Q1, reliable and stable, energy consumption is low.
Preferably, described voltage stabilizing branch road 2 can comprise: half-bridge driven booster circuit 21 and boost pressure controller U2, and when after vehicle launch, described boost pressure controller U2 controls described half-bridge driven booster circuit 21 and exports after described input voltage boosting.Half-bridge driven is few compared to full bridge driver part, and structure is simple, while guaranteeing boosting, saved energy consumption, is also convenient to maintenance.
Preferably, as shown in Figure 2, described half-bridge driven booster circuit 21 can comprise the second metal-oxide-semiconductor Q2, the 3rd metal-oxide-semiconductor Q3, the first inductance L 1, second inductance L 2, first electrochemical capacitor C1, the second electrochemical capacitor C2, the 3rd electrochemical capacitor C3, the first shunt capacitance group 211 and the second shunt capacitance group 212;
Described boost pressure controller U2 comprises the first output and the second output, couples respectively with the control end of described second metal-oxide-semiconductor Q2 and the control end of described 3rd metal-oxide-semiconductor Q3;
A common port of described first shunt capacitance group 211 is the input of described voltage stabilizing branch road 2, another common end grounding, described first electrochemical capacitor C1 is in parallel with described first shunt capacitance group 211, the positive pole of described first electrochemical capacitor C1 and one end of described first inductance L 1 couple, the other end of described first inductance L 1 and the input of described second metal-oxide-semiconductor Q2 couple, the output head grounding of described second metal-oxide-semiconductor Q2, the input of described 3rd metal-oxide-semiconductor Q3 and the input of described second metal-oxide-semiconductor Q2 couple, the output of described 3rd metal-oxide-semiconductor Q3 and a common port of described second shunt capacitance group 212 couple, another common end grounding of described second shunt capacitance group 212, described second electrochemical capacitor C2 is in parallel with described second shunt capacitance group 212, the positive pole of described second electrochemical capacitor C2 and one end of described second inductance L 2 couple, the other end of described second inductance L 2 couples with the described positive pole of the 3rd electrochemical capacitor C3 and the output of described bypass 1 simultaneously, the positive pole of described 3rd electrochemical capacitor C3 is the output of described voltage stabilizing branch road 2, the minus earth of described 3rd electrochemical capacitor C3.
Particularly, during vehicle launch state, when first output of boost pressure controller U2 exports the first level, its second output will export second electrical level, when its first output exports second electrical level, its first output will export the first level, thus when making the second metal-oxide-semiconductor Q2 conducting, 3rd metal-oxide-semiconductor Q3 ends, and during the second metal-oxide-semiconductor Q2 cut-off, 3rd metal-oxide-semiconductor Q3 will conducting (in practical application, when the second metal-oxide-semiconductor Q2 and the 3rd metal-oxide-semiconductor Q3 is N-channel MOS pipe, first level is high level, second electrical level is low level, those skilled in the art are to be understood that, first level is low level, second electrical level is high level is also feasible, such as, when the second metal-oxide-semiconductor Q2 and the 3rd metal-oxide-semiconductor Q3 are P channel MOS tube.In embody rule, input voltage is first after described first shunt capacitance group 211 filtering voltage regulation, the impact of voltage fluctuation to the first electrochemical capacitor C1 can be slowed down, extend the useful life of the first electrochemical capacitor C1, if now the second metal-oxide-semiconductor Q2 conducting, then the 3rd metal-oxide-semiconductor Q3 ends, then the first inductance L 1, loop is formed between the second metal-oxide-semiconductor Q2 and vehicle power, first inductance L 1 by electrical power storage in the first electrochemical capacitor C1, when the second metal-oxide-semiconductor Q2 ends, then the 3rd metal-oxide-semiconductor Q3 conducting, the electric energy accumulated is after-applied in the second electrochemical capacitor C2 through the second shunt capacitance group 212 filtering voltage regulation through the 3rd metal-oxide-semiconductor Q3, this process constantly repeats, voltage on second electrochemical capacitor C2 is constantly increased, realize the boosting to input voltage, by the second shunt capacitance group 212, second electrochemical capacitor C2, second inductance L 2, the filtering of the 3rd electrochemical capacitor C3, the process of boosting, just mild direct voltage can be exported, while guarantee boosting effect, energy consumption is also lower.
Preferably, described boost pressure controller U2 can be LM5122 chip, the pin 16 of described LM5122 chip is first output of described boost pressure controller U2, the pin 19 of described LM5122 chip is second output of described boost pressure controller U2, couples respectively with the control end of described second metal-oxide-semiconductor Q2 and the control end of described 3rd metal-oxide-semiconductor Q3.
Particularly, because LM5122 built-in chip type RC charging circuit, the resonance frequency of about 300KHZ can be produced, thus make the pin 16 (the first output) of LM5122 chip and pin 19 (the second output) alternately export low and high level, without the need to compiler, syndeton by means of only hardware circuit can realize semi-bridge type and drive, and reliable and stable, energy consumption is low.
Preferably, the electric capacity in described second shunt capacitance group 212 can be more than 4.By arranging the shunt capacitance of more than 4, even if one of them or several electric capacity have broken down, remaining electric capacity also can realize the function of boosting energy storage, extends the useful life of equipment.
Preferably, the DC voltage-stabilizing transducer described in the present embodiment, can also comprise reference voltage circuit 3, couples with the output of described bypass 1 and described voltage stabilizing branch road 2, for described bypass 1 and described voltage stabilizing branch road 2 provide reference voltage.
Particularly, the setting of reference voltage can be realized by the proportioning of the resistance of the connection in series-parallel between several resistance, electric capacity and different resistance, as shown in Figure 2, connect with resistance R1 again after resistance R2, resistance R3 and electric capacity C4 parallel connection, achieve the setting of reference voltage, structure is simple, and setting accurately.
Preferably; DC voltage-stabilizing transducer described in the present embodiment; the first protective circuit 4 can also be comprised, couple with the output of described vehicle power, for the input voltage of described vehicle power is inputted described bypass 1 and described voltage stabilizing branch road 2 after transient voltage suppression, filtering process.
Particularly; as described in Figure 2; first protective circuit 4 can be made up of a TVS diode, multiple electric capacity and a diodes in parallel, and wherein TVS diode can play the effect suppressing transient voltage, prevents surge; the electric capacity of multiple parallel connection can play the effect of filtering; the positive pole of diode cathode and vehicle power couples, and reverse power connection can be prevented the infringement of circuit, and structure is simple; effect stability, can play the suppression of extraordinary transient voltage, filtering and anti-reverse effect.
Preferably; DC voltage-stabilizing transducer described in the present embodiment; the second protective circuit 5 can also be comprised, couple with the output of described bypass 1 and described voltage stabilizing branch road 2, export after suppressing process through filtering, transient voltage for the voltage that described bypass 1 and described voltage stabilizing branch road 2 are exported.
Particularly; as shown in Figure 2; second protective circuit 5 can be made up of a TVS diode and multiple Capacitance parallel connection; wherein TVS diode can play the effect suppressing transient voltage; prevent surge; the electric capacity of multiple parallel connection can play the effect of filtering, ensure that DC voltage-stabilizing transducer can the voltage of stable output, extends the useful life of equipment.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range that the utility model creates.
Claims (10)
1. a DC voltage-stabilizing transducer, is characterized in that, comprising: the bypass (1) of electrical connection in parallel and voltage stabilizing branch road (2);
When the input voltage of vehicle power falls, described bypass (1) ends, and described input voltage exports after described voltage stabilizing branch road (2) boosting; When the input voltage of vehicle power gos up to rated value, described bypass (1) conducting, described input voltage exports after described bypass (1).
2. DC voltage-stabilizing transducer according to claim 1, is characterized in that, described bypass (1) comprises the first metal-oxide-semiconductor (Q1), trigger (U1) and the first diode (D1);
Described trigger (U1) comprises the first output, second output and the 3rd output, the input of described first output and described first metal-oxide-semiconductor (Q1) couples, the output of described second output and described first metal-oxide-semiconductor (Q1) couples, the control end of described 3rd output and described first metal-oxide-semiconductor (Q1) couples, the input of described first metal-oxide-semiconductor (Q1) is the input of described bypass (1), the output of described first metal-oxide-semiconductor (Q1) is the output of described bypass (1), the positive pole of described first diode (D1) and the input of described first metal-oxide-semiconductor (Q1) couple, the negative pole of described first diode (D1) and the output of described first metal-oxide-semiconductor (Q1) couple,
When voltage higher than the output of described first metal-oxide-semiconductor (Q1) of the input terminal voltage of described first metal-oxide-semiconductor (Q1), 3rd output of described trigger (U1) exports the first level, the conducting of described first metal-oxide-semiconductor (Q1) to the control end of described first metal-oxide-semiconductor (Q1); Otherwise the 3rd output of described trigger (U1) exports second electrical level to the control end of described first metal-oxide-semiconductor (Q1), described first metal-oxide-semiconductor (Q1) cut-off.
3. DC voltage-stabilizing transducer according to claim 2, it is characterized in that, described trigger (U1) is LM5050 chip, the pin 4 of described LM5050 chip is the first output of described trigger (U1), couple with the input of described first metal-oxide-semiconductor (Q1), the pin 6 of described LM5050 chip is the second output of described trigger (U1), couple with the output of described first metal-oxide-semiconductor (Q1), the pin 5 of described LM5050 chip is the 3rd output of described trigger (U1), couple with the control end of described first metal-oxide-semiconductor (Q1).
4. DC voltage-stabilizing transducer according to claim 1, it is characterized in that, described voltage stabilizing branch road (2) comprising: half-bridge driven booster circuit (21) and boost pressure controller (U2), when after vehicle launch, described boost pressure controller (U2) controls described half-bridge driven booster circuit (21) and exports after described input voltage boosting.
5. DC voltage-stabilizing transducer according to claim 4, is characterized in that:
Described half-bridge driven booster circuit (21) comprises the second metal-oxide-semiconductor (Q2), the 3rd metal-oxide-semiconductor (Q3), the first inductance (L1), the second inductance (L2), the first electrochemical capacitor (C1), the second electrochemical capacitor (C2), the 3rd electrochemical capacitor (C3), the first shunt capacitance group (211) and the second shunt capacitance group (212);
Described boost pressure controller (U2) comprises the first output and the second output, couples respectively with the control end of described second metal-oxide-semiconductor (Q2) and the control end of described 3rd metal-oxide-semiconductor (Q3);
A common port of described first shunt capacitance group (211) is the input of described voltage stabilizing branch road (2), another common end grounding, described first electrochemical capacitor (C1) is in parallel with described first shunt capacitance group (211), the positive pole of described first electrochemical capacitor (C1) and one end of described first inductance (L1) couple, the other end of described first inductance (L1) and the input of described second metal-oxide-semiconductor (Q2) couple, the output head grounding of described second metal-oxide-semiconductor (Q2), the described input of the 3rd metal-oxide-semiconductor (Q3) and the input of described second metal-oxide-semiconductor (Q2) couple, the output of described 3rd metal-oxide-semiconductor (Q3) and a common port of described second shunt capacitance group (212) couple, another common end grounding of described second shunt capacitance group (212), described second electrochemical capacitor (C2) is in parallel with described second shunt capacitance group (212), the positive pole of described second electrochemical capacitor (C2) and one end of described second inductance (L2) couple, the other end of described second inductance (L2) couples with the described positive pole of the 3rd electrochemical capacitor (C3) and the output of described bypass (1) simultaneously, the positive pole of described 3rd electrochemical capacitor (C3) is the output of described voltage stabilizing branch road (2), the minus earth of described 3rd electrochemical capacitor (C3).
6. DC voltage-stabilizing transducer according to claim 5, it is characterized in that, described boost pressure controller (U2) is LM5122 chip, the pin 16 of described LM5122 chip is the first output of described boost pressure controller (U2), the pin 19 of described LM5122 chip is the second output of described boost pressure controller (U2), couples respectively with the control end of described second metal-oxide-semiconductor (Q2) and the control end of described 3rd metal-oxide-semiconductor (Q3).
7. DC voltage-stabilizing transducer according to claim 5, is characterized in that, the electric capacity in described second shunt capacitance group (212) is more than 4.
8. DC voltage-stabilizing transducer according to claim 5, it is characterized in that, also comprise reference voltage circuit (3), couple with the output of described bypass (1) and described voltage stabilizing branch road (2), for described bypass (1) and described voltage stabilizing branch road (2) provide reference voltage.
9. DC voltage-stabilizing transducer according to claim 8; it is characterized in that; also comprise the first protective circuit (4); couple with the output of described vehicle power, for the input voltage of described vehicle power is inputted described bypass (1) and described voltage stabilizing branch road (2) after transient voltage suppression, filtering process.
10. DC voltage-stabilizing transducer according to claim 9; it is characterized in that; also comprise the second protective circuit (5); couple with the output of described bypass (1) and described voltage stabilizing branch road (2), export after suppressing process through filtering, transient voltage for the voltage that described bypass (1) and described voltage stabilizing branch road (2) are exported.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106410959A (en) * | 2016-11-28 | 2017-02-15 | 上汽大众汽车有限公司 | Vehicle start and stop voltage stabilizer circuit |
| CN109787346A (en) * | 2018-12-27 | 2019-05-21 | 苏州佳世达光电有限公司 | Power-supply management system |
| CN112910078A (en) * | 2021-02-07 | 2021-06-04 | 青岛博宁福田智能交通科技发展有限公司 | Double-direct-current power supply switching circuit |
| CN115242066A (en) * | 2022-09-15 | 2022-10-25 | 荣耀终端有限公司 | Power supply circuit and product thereof |
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2015
- 2015-03-09 CN CN201520133011.7U patent/CN204615649U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410959A (en) * | 2016-11-28 | 2017-02-15 | 上汽大众汽车有限公司 | Vehicle start and stop voltage stabilizer circuit |
| CN109787346A (en) * | 2018-12-27 | 2019-05-21 | 苏州佳世达光电有限公司 | Power-supply management system |
| CN112910078A (en) * | 2021-02-07 | 2021-06-04 | 青岛博宁福田智能交通科技发展有限公司 | Double-direct-current power supply switching circuit |
| CN115242066A (en) * | 2022-09-15 | 2022-10-25 | 荣耀终端有限公司 | Power supply circuit and product thereof |
| CN115242066B (en) * | 2022-09-15 | 2023-02-07 | 荣耀终端有限公司 | Power supply circuit and product thereof |
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Address after: 325608 No. 1098, happy East Road, Hongqiao Town, Yueqing City, Wenzhou, Zhejiang Patentee after: Hop Hing automotive electronics Limited by Share Ltd Address before: 325608 No. 1098, happy East Road, Hongqiao Town, Yueqing City, Wenzhou, Zhejiang Patentee before: CWB Group Automotive Electronic Co., Ltd. |