CN101425747A - Electric power supply device having voltage conversion circuit - Google Patents
Electric power supply device having voltage conversion circuit Download PDFInfo
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- CN101425747A CN101425747A CNA2007101815974A CN200710181597A CN101425747A CN 101425747 A CN101425747 A CN 101425747A CN A2007101815974 A CNA2007101815974 A CN A2007101815974A CN 200710181597 A CN200710181597 A CN 200710181597A CN 101425747 A CN101425747 A CN 101425747A
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Abstract
The invention relates to a power supply device with a voltage conversion circuit, which comprises a power supply device, a voltage boosting electric circuit, a voltage reducing electric circuit and a controlling unit. The power supply device can adopt various power supply methods; the voltage boosting electric circuit is used for boosting the voltage of the electric output of the power supply device; the voltage reducing electric circuit is used for reducing the voltage of the electric output of the power supply device, and the voltage boosting electric circuit is electrically connected with the voltage reducing electric circuit in parallel; and the controlling unit is used for selecting the voltage boosting electric circuit or the voltage reducing electric circuit for the power supply device for voltage conversion. The output power of the power supply device is monitored through the controlling unit, the action of the voltage boosting electric circuit or the voltage reducing electric circuit is controlled, and the output voltage of the power supply device meets the requirement of the system after the voltage conversion.
Description
Technical field
The present invention is about a kind of power supply device of tool voltage conversion circuit, and it particularly provides the boost loop and the reduction voltage loop of power supply device or even electric connection one parallel connection of fuel cell, to adjust the output voltage of this power supply device.
Background technology
Electronic circuit technology now usually needs various system and module to cooperatively interact just to finish more complex functions, work is more efficient and the characteristic of function diversification.Yet not necessarily there is identical operating voltage in different systems with intermodule, some special system or module are in order to reach its specific purposes and must to boost or the action of step-down, and voltage modulation technology of the present invention, this voltage modulation can be applied between various systems and the module easily, the present invention also can be by different control units in addition, do the running of more efficient control electric pressure converter, make voltage transitions more efficient.
Therefore, the present inventor is because the disappearance of known output voltage modulation is urgently to think to invent a kind of voltage modulation method that has efficiency and convenience concurrently.
Summary of the invention
Main purpose of the present invention is to provide a power supply device with voltage conversion circuit, it provides boost an electric loop and a step-down electric loop, control the electronic switch of voltage conversion unit by control unit, obtain a fixed voltage electric current in output.
For reaching above-mentioned purpose, the invention provides a power supply device, the electric loop that boosts, step-down electric loop and control unit.Power supply device, it can be the mode of various supply electric power; The electric loop that boosts is in order to promote the voltage of this power supply device output power; The step-down electric loop is in order to reduce the voltage of this power supply device output power; Control unit will use this boost electric loop or this step-down electric loop to carry out voltage transitions in order to select this power supply device.
Aforementioned this electric loop that boosts is that electric parallel form is connected with this step-down electric loop, this control unit is electrically connected to this boost electric loop and this step-down electric loop respectively, see through this control unit and monitor the out-put supply of this power supply device, and control this buck shunt circuit action, it is required to make this power supply device output voltage after voltage transitions reach system.
Be familiar with this skill personage and understand purpose of the present invention, feature and effect for making, now by following specific embodiment, and cooperate graphic, to the present invention illustrate in detail as after.
Description of drawings
Fig. 1 is the component liaison figure of power supply device one specific embodiment of tool voltage conversion circuit of the present invention;
Fig. 2 is the component liaison figure of another specific embodiment of power supply device of tool voltage conversion circuit of the present invention;
Fig. 3 is the power supply device of the tool voltage conversion circuit of the present invention component liaison figure of a specific embodiment again;
Fig. 4 is the power supply device of the tool voltage conversion circuit of the present invention component liaison figure of a specific embodiment again;
Fig. 5 is the power supply device of the tool voltage conversion circuit of the present invention component liaison figure of a specific embodiment again;
Fig. 6 is the power supply device of the tool voltage conversion circuit of the present invention component liaison figure of a specific embodiment again;
Fig. 7 is the power supply device of the tool voltage conversion circuit of the present invention component liaison figure of a specific embodiment again; And
Fig. 8 is the power supply device of the tool voltage conversion circuit of the present invention component liaison figure of a specific embodiment again.
The primary clustering symbol description
DC boost converter 21
First electric switch 22
Step-down electric loop 3
DC decompression converter 31
Second electric switch 33
The back of the body connects the golden oxygen half electric switch group 34 of the back of the body
Voltage comparator 42
Vin voltage end points 43
Digital analog converter 44
Voltage output device 46
Micro-control unit 47
Voltage adjuster 48
Inverter 5
Embodiment
With reference to shown in Figure 1, be the component liaison figure of a specific embodiment of the power supply device of tool voltage conversion circuit of the present invention.The power supply device of tool voltage conversion circuit of the present invention, it comprises that boost electric loop 2, a step-down electric loop 3 and a control unit 4 of a power supply device 1, constitutes, wherein this power supply device 1 is electrically connected this electric loop 2 that boosts, and this step-down electric loop 3 is electric in parallel with this electric loop 2 that boosts, and the electric power that makes this power supply device 1 be produced can reach the electric power output of predeterminated voltage by this.
In the power supply device of aforementioned tool voltage conversion circuit of the present invention, this power supply device 1 can be any one can supply the form of electric power, as specific embodiment, it utilizes methanol fuel and oxygen to carry out electrochemical reaction and uses and produces direct current power with direct methanol fuel cell; This electric loop 2 that boosts comprises a direct current boost converter 21 and one first electric switch 22, and this DC boost converter 21 and these first electric switch, 22 connected in electrical series, in order to the voltage transitions with this power supply device 1 output power is the electric power output of high voltage, and this first electric switch 22 is in order to select opening or to close the electrical communications passage of this electric loop 2 that boosts, and this first electric switch 22 can be selected from the diode switch assembly, mos field effect transistor switch module and other any can reaching via the electric switching assembly of electrical signal control; This step-down electric loop 3 comprises a direct current step-down controller 31 and a diode 32, and this DC decompression converter 31 and these diode 32 connected in electrical series, is the electric power output of low voltage in order to the voltage transitions with this power supply device 1 output power; And this control unit 4 comprises a reference voltage device 41 and a voltage comparator 42, this control unit 4 carries out voltage transitions in order to select the voltage transitions electric loop in this boost electric loop 2 and this step-down electric loop 3, uses output power with this power supply device 1 and is adjusted to and has the output power that sets voltage.
Aforementioned this power supply device 1 connected in electrical series connects this DC boost converter 21 and these first electric switch, 22 formed electric loops, it is commutative that this DC boost converter 21 and this first electric switch 22 electric is set to, and electric loop 2 still has the function of equivalence but this boosts; One end of this DC decompression converter 31 in this step-down electric loop 3 and the power output end of this power supply device 1 are electrically connected, and the other end of this DC decompression converter 31 is electrically connected this diode 32, this diode 32 is electrically connected with the power output end that this boosts electric loop 2, makes this electric power that boosts electric loop 2 output high potentials can not enter this step-down electric loop 3; And this voltage comparator 42 of these control unit 4 inside has one to be electrically connected with this first electric switch 22, the positive end points of this voltage comparator 42 connects a reference voltage device 41, negative terminal then links a Vin voltage end points 43, the magnitude of voltage of this Vin voltage end points 43 and this power supply device 1 output voltage equipotential, utilize the comparison of this reference voltage device 41 and this Vin voltage end points 43,42 of this voltage comparators can carry out conducting and the control of closing to this first electric switch 22.
The voltage of above-mentioned these reference voltage device 41 outputs and the output voltage of this power supply device 1 are relatively, utilize this voltage comparator 42 that this first electric switch 22 is controlled, when the output voltage of this power supply device 1 output voltage less than this reference voltage device 41, then this first electric switch 22 is with conducting, utilize this electric loop 2 of boosting that voltage is promoted, otherwise then close this first electric switch 22, change by this step-down electric loop 3 voltage of this power supply device 1 is reduced to required magnitude of voltage.
With reference to shown in Figure 2, be the component liaison figure of another specific embodiment of the power supply device of tool voltage conversion circuit of the present invention.Based on aforementioned embodiments of the invention, in the power supply device of tool voltage conversion circuit of the present invention, the reference voltage device 41 of this control unit 4 can be replaced by the voltage signal feedway that a digital analog converter 44 and a digital signal generator 45 are constituted.
The electrical signal output of the voltage comparator 42 of aforementioned control unit 4 is electrically connected this first electric switch 22, and the positive end points of these voltage comparator 42 inputs connects this digital analog converter 44, these digital analog converter 44 another end points then are electrically connected this digital signal generator 45, the negative terminal of these voltage comparator 42 inputs then links a Vin voltage end points 43, the magnitude of voltage of this Vin voltage end points 43 and this power supply device 1 output voltage equipotential, utilize this digital signal generator 45 to produce a digital signal, transfer signal the comparison of magnitude of voltage and this Vin voltage end points 43 to via this digital analog converter 44, make 42 pairs of these first electric switches 22 of this voltage comparator carry out conducting and the control of closing by the difference of Vin voltage end points 43 voltage swings.
Utilize this digital signal generator 45 to produce a digital signal, through this digital analog converter 44 output voltage that signal transfers magnitude of voltage and this power supply device 1 to is compared, utilize this voltage comparator 42 that this first electric switch 22 is controlled, when this power supply device 1 output voltage less than these reference voltage device 41 output voltages, then this first electric switch 22 is with conducting, utilize this electric loop 2 of boosting that voltage is promoted, otherwise then close this first electric switch 22, change by this step-down electric loop 3 voltage of this power supply device 1 is reduced to required voltage.
With reference to shown in Figure 3, component liaison figure for the specific embodiment again of the power supply device of tool voltage conversion circuit of the present invention, it comprises that boost electric loop 2, a step-down electric loop 3 and control unit 4 of a power supply device 1, form, this power supply device 1 is electrically connected this electric loop 2 that boosts, and this step-down electric loop 3 is in parallel with this electric loop 2 that boosts, this power supply device 1 sees through this circuit and links, and the electric power that this power supply device 1 is produced reaches the form of power of predeterminated voltage by this.
In the power supply device of aforementioned tool voltage conversion circuit of the present invention, this control unit 4 comprises a voltage comparator 42 and a voltage output device 46, and this control unit 4 will use this boost electric loop 2 or this step-down electric loop 3 to carry out voltage transitions in order to select this power supply device 1.
Aforementioned this power supply device 1 is electrically connected with this DC boost converter 21, these DC boost converter 21 other ends then are electrically connected with this first electric switch 22, and this DC boost converter 21 exchanges the function that also can reach this electric loop 2 that boosts with these first electric switch, 22 mode of connection; These DC decompression converter 31 1 ends and this power supply device 1 in this step-down electric loop 3 has one to be electrically connected in addition, and the other end then links this diode 32; Voltage comparator 42 and this first electric switch 22 of these control unit 4 inside are electrically connected, the positive end points of these voltage comparator 42 inputs is electrically connected a voltage output device 46, the negative terminal of these voltage comparator 42 inputs is electrically connected a Vin voltage end points 43, the magnitude of voltage of this Vin voltage end points 43 and this power supply device 1 output voltage equipotential, utilize this voltage output device 46 produce a magnitude of voltage come with the voltage ratio of this Vin voltage end points 43, determine that by the size of Vin voltage end points 43 voltages the output voltage of this voltage comparator 42 comes this first electric switch 22 is carried out conducting and the control of closing.
Because voltage output device 46 can dynamically produce a voltage, the output voltage of this voltage and this power supply device 1 relatively, utilize this voltage comparator 42 that this first electric switch 22 is controlled, when the output voltage of this power supply device 1 output voltage less than this voltage output device 46, then this first electric switch 22 is with conducting, utilize this electric loop 2 of boosting that voltage is promoted, otherwise then close this first electric switch 22, change by this step-down electric loop 3 voltage of this power supply device 1 is reduced to required magnitude of voltage.
With reference to shown in Figure 4, be the component liaison figure of the specific embodiment again of the power supply device of tool voltage conversion circuit of the present invention.The power supply device of tool voltage conversion circuit of the present invention, it comprises that boost electric loop 2, a step-down electric loop 3 and control unit 4 of a power supply device 1, form, this power supply device 1 is electrically connected this electric loop 2 that boosts, and this step-down electric loop 3 is in parallel with this electric loop 2 that boosts, this power supply device 1 sees through this circuit and links, and the electric power that this power supply device 1 is produced reaches the form of power of predeterminated voltage by this.
In the power supply device of aforementioned tool voltage conversion circuit of the present invention, this control unit 4 comprises a reference voltage device 41, a voltage comparator 42, a digital analog converter 44, a digital signal generator 45 and a voltage adjuster 48, and this control unit 4 will use this boost electric loop 2 or this step-down electric loop 3 to carry out voltage transitions in order to select this power supply device 1.
Aforementioned this power supply device 1 is electrically connected with this DC boost converter 21, these DC boost converter 21 other ends then are electrically connected with this first electric switch 22, and this DC boost converter 21 exchanges the function that also can reach this electric loop 2 that boosts with these first electric switch, 22 mode of connection; These DC decompression converter 31 1 ends and this power supply device 1 in this step-down electric loop 3 has one to be electrically connected in addition, and the other end then links this diode 32; Voltage comparator 42 and this first electric switch 22 of these control unit 4 inside have one to be electrically connected, the positive end points of this voltage comparator 42 connects a reference voltage device 41, negative terminal then links this voltage adjuster 48, this voltage adjuster 48 a wherein end is electrically connected this digital analog converter 44, the other end is electrically connected this power supply device 1 output voltage, these digital analog converter 44 other ends then are electrically connected with this digital signal generator 45, utilize this digital signal generator 45 to produce a digital signal, see through this digital analog converter 44 and change into a magnitude of voltage, see through this voltage adjuster 48 again in order to do voltage ratio with these reference voltage device 41 output voltages, then 42 of this voltage comparators can carry out conducting and the control of closing to this first electric switch 22, this digital signal generator 45 sees through the voltage signal that this digital analog converter 44 is produced in addition, see through and be electrically connected to this DC boost converter 21 and this DC decompression converter 31, therefore can control the voltage transitions situation of this DC boost converter 21 and this DC decompression converter 31 by this digital signal generator 45.
Utilize this digital signal generator 45 to produce a digital signal, transfer signal to magnitude of voltage and this reference voltage device 41 output voltages are done voltage ratio through this digital analog converter 44 and this voltage adjuster 48, utilize this voltage comparator 42 that this first electric switch 22 is controlled, when the output voltage of signal that this digital signal generator 45 the produces output voltage after this digital analog converter 44 and this voltage adjuster 48 conversions less than this reference voltage device 41, then this first electric switch 22 is with conducting, then the output power of this power supply device 1 sees through this electric loop 2 of boosting voltage is promoted, otherwise then close this first electric switch 22, change by this step-down electric loop 3 voltage of this power supply device 1 is reduced to required magnitude of voltage, because this digital signal generator 45 can dynamically be adjusted the generation of its digital signal, so can reach the voltage transitions of this power supply device 1 of dynamic adjustment.
With reference to shown in Figure 5, be the component liaison figure of the specific embodiment again of the power supply device of tool voltage conversion circuit of the present invention.The power supply device of tool voltage conversion circuit of the present invention, it comprises that boost electric loop 2, a step-down electric loop 3 and control unit 4 of a power supply device 1, form, this power supply device 1 is electrically connected this electric loop 2 that boosts, and this step-down electric loop 3 is in parallel with this electric loop 2 that boosts, this power supply device 1 sees through this circuit and links, and the electric power that this power supply device 1 is produced reaches the form of power of predeterminated voltage by this.
In the power supply device of aforementioned tool voltage conversion circuit of the present invention, this control unit 4 comprises a reference voltage device 41, a voltage comparator 42, a voltage output device 46 and a voltage adjuster 48, and this control unit 4 will use this boost electric loop 2 or this step-down electric loop 3 to carry out voltage transitions in order to select this power supply device 1.
Aforementioned this power supply device 1 is electrically connected with this DC boost converter 21, these DC boost converter 21 other ends then are electrically connected with this first electric switch 22, and this DC boost converter 21 exchanges the function that also can reach this electric loop 2 that boosts with these first electric switch, 22 mode of connection; These DC decompression converter 31 1 ends and this power supply device 1 in this step-down electric loop 3 is electrically connected in addition, and the other end then is electrically connected this diode 32; Voltage comparator 42 and this first electric switch 22 of these control unit 4 inside are electrically connected, the positive end points of these voltage comparator 42 inputs is electrically connected a reference voltage device 41, the negative terminal of these voltage comparator 42 inputs then is electrically connected this voltage adjuster 48, this voltage adjuster 48 a wherein end and this voltage output device 46 is electrically connected, the other end is electrically connected this power supply device 1 output voltage, the voltage that this voltage output device 46 is produced sees through this voltage adjuster 48 again and does voltage ratio with the output voltage of this reference voltage device 41, this voltage comparator 42 can select this first electric switch 22 to be conducting state or closed condition according to comparative result, and then reach and select this DC boost converter 21 or this DC decompression converter 31 to carry out voltage transitions, and control the voltage transitions of 46 output powers of this voltage output device.
Among the aforesaid embodiment, it is that the voltage that utilizes this voltage output device 46 to be produced is done voltage ratio through this voltage adjuster 48 and the output voltage of this reference voltage device 41 again, and this voltage comparator 42 can be controlled this first electric switch 22.Therefore, voltage after the output voltage of this voltage output device 46 sees through these voltage adjuster 48 conversions again is less than the output voltage of this reference voltage device 41, then this first electric switch 22 is with conducting, utilize this electric loop 2 of boosting that voltage is promoted, otherwise then close this first electric switch 22, change by this step-down electric loop 3, make and with the voltage transitions of this power supply device 1 and to be reduced to required magnitude of voltage, because this voltage output device 46 can dynamically be adjusted its magnitude of voltage, so can reach the voltage transitions of this power supply device 1 of dynamic adjustment.
With reference to shown in Figure 6, be the component liaison figure of the specific embodiment again of the power supply device of tool voltage conversion circuit of the present invention.The power supply device of tool voltage conversion circuit of the present invention, it comprises that boost electric loop 2, a step-down electric loop 3 and a micro-control unit 47 of a power supply device 1, form, this power supply device 1 is electrically connected this electric loop 2 that boosts, and this step-down electric loop 3 is in parallel with this electric loop 2 that boosts, this power supply device 1 sees through this circuit and links, and the electric power that this power supply device 1 is produced reaches the form of power of predeterminated voltage by this.
Aforementioned this power supply device 1 is electrically connected with this DC boost converter 21, these DC boost converter 21 other ends and this first electric switch 22 are electrically connected, and this first electric switch 22 exchanges the function that also can reach this electric loop 2 that boosts with these DC boost converter 21 mode of connection; These DC decompression converter 31 1 ends and this power supply device 1 in this step-down electric loop 3 have one to be electrically connected, and the other end then links this diode 32; And first electric switch 22 of this micro-control unit 47 and this electric loop 2 that boosts is electrically connected, and can send the action that electrical signal is controlled this first electric switch 22 by micro-control unit 47.
When the voltage requirements of this systemic presupposition is higher than the output voltage of this power supply device 1, this micro-control unit 47 will be controlled this first electric switch 22 of this electric loop 2 that boosts and select to open this electric loop 2 that boosts, the output power of this power supply device 1 can see through this electric loop 2 that boosts and carry out voltage transitions, and the electric power of the required voltage of output system; And when the voltage requirements of systemic presupposition is lower than the output voltage of this power supply device 1, this micro-control unit 47 will be controlled this first electric switch 22 of this electric loop 2 that boosts and select to close this electric loop 2 that boosts, the output power of this power supply device 1 can see through this step-down electric loop 3 and carry out voltage transitions, and the electric power of the required voltage of output system.
With reference to shown in Figure 7, be the component liaison figure of the specific embodiment again of the power supply device of tool voltage conversion circuit of the present invention.The power supply device of tool voltage conversion circuit of the present invention, it comprises that boost electric loop 2, a step-down electric loop 3, a control unit 4 and an inverter 5 of a power supply device 1, form, this power supply device 1 is electrically connected this electric loop 2 that boosts, and this step-down electric loop 3 is in parallel with this electric loop 2 that boosts, this power supply device 1 sees through this circuit and links, and the electric power that this power supply device 1 is produced reaches the form of power of predeterminated voltage by this.
Aforementioned this power supply device 1 is electrically connected with this DC boost converter 21, these DC boost converter 21 other ends then are electrically connected with this first electric switch 22, and this DC boost converter 21 exchanges the function that also can reach this electric loop 2 that boosts with these first electric switch, 22 mode of connection; These DC decompression converter 31 1 ends and this power supply device 1 in this step-down electric loop 3 are electrically connected, and the other end of this DC decompression converter 31 then is electrically connected one second electric switch 33; Voltage comparator 42 and this first electric switch 22 of these control unit 4 inside are electrically connected, the output of this voltage comparator 42 is electrically connected this inverter 5, and see through this inverter 5 again and be electrically connected to the control end of this second electric switch 33, the positive end points of these voltage comparator 42 inputs is electrically connected a reference voltage device 41, the negative terminal of these voltage comparator 42 inputs then links a Vin voltage end points 43, the magnitude of voltage of this Vin voltage end points 43 and this power supply device 1 output voltage equipotential, see through the output voltage and the comparison of this Vin voltage end points 43 of this reference voltage device 41, it is that unlatching or closed condition and this second electric switch 33 are the state of this first electric switch 22 on the contrary to select this first electric switch 22 respectively that 42 of this voltage comparators can be exported a forward and a reverse signal.
The aforementioned output voltage of this reference voltage device 41 and the output voltage of this power supply device 1 of utilizing compares, and sees through this voltage comparator 42 controls this first electric switch 22 and this second electric switch 33.Therefore, when the output voltage of this power supply device 1 output voltage less than this reference voltage device 41, the electrical signal that this voltage comparator 42 is exported can select this first electric switch 22 to be opening, this electrical signal sees through this inverter 5 simultaneously becomes anti-phase signal, and select this second electric switch 33 to be closed condition, use seeing through this action of electric loop 2 of boosting, and the voltage of output power that increases this power supply device 1 is to rated voltage; On the other hand, when the output voltage of this power supply device 1 output voltage greater than this reference voltage device 41, the electrical signal that this voltage comparator 42 is exported can select this first electric switch 22 to be closed condition, this electrical signal sees through this inverter 5 simultaneously becomes anti-phase signal, and select this second electric switch 33 to be opening, use the action that sees through this step-down electric loop 3, and the voltage of output power that downgrades this power supply device 1 is to rated voltage.
With reference to shown in Figure 8, be the component liaison figure of the specific embodiment again of the power supply device of tool voltage conversion circuit of the present invention.The power supply device of tool voltage conversion circuit of the present invention, it comprises that boost electric loop 2, a step-down electric loop 3, a control unit 4 and an inverter 5 of a power supply device 1, form, this power supply device 1 is electrically connected this electric loop 2 that boosts, and this step-down electric loop 3 is in parallel with this electric loop 2 that boosts, this power supply device 1 sees through this circuit and links, and the electric power that this power supply device 1 is produced reaches the form of power of predeterminated voltage by this.
Aforementioned this boost electric loop 2 it comprise a direct current boost converter 21 and an electric switch 22; It comprises that a direct current step-down controller 31 and a back of the body connect the golden oxygen half electric switch group 34 of the back of the body (back-to-back) this step-down electric loop 3, this back of the body connects the golden oxygen half electric switch group 34 of the back of the body and comprises two electric serial connections of golden oxygen half electric switch, and the direction of the parasitic diode of two golden oxygen half electric switches is opposite, and the action that therefore can close this step-down electric loop 3 by this back of the body connects the golden oxygen half electric switch group 34 of the back of the body also can effectively prevent the generation of reverse current.
Aforementioned this power supply device 1 is electrically connected with this DC boost converter 21, these DC boost converter 21 other ends then are electrically connected with this first electric switch 22, and this DC boost converter 21 exchanges the function that also can reach this electric loop 2 that boosts with these first electric switch, 22 mode of connection; These DC decompression converter 31 1 ends and this power supply device 1 in this step-down electric loop 3 are electrically connected, and then electric this back of the body of binding of the other end of this DC decompression converter 31 connects the golden oxygen half electric switch group 34 of the back of the body; Voltage comparator 42 and this first electric switch 22 of these control unit 4 inside have one to be electrically connected, these voltage comparator 42 outputs link this inverter 5 in addition, be electrically connected to this back of the body through this inverter 5 and connect the golden oxygen half electric switch group 34 of the back of the body, the positive end points of this voltage comparator 42 connects a reference voltage device 41, negative terminal then links a Vin voltage end points 43, the magnitude of voltage of this Vin voltage end points 43 and this power supply device 1 output voltage equipotential, utilize the comparison of output voltage and this Vin voltage end points 43 of this reference voltage device 41,42 of this voltage comparators can connect the golden oxygen half electric switch group 34 of the back of the body to this first electric switch 22 and this back of the body and carry out conducting and the control of closing.
The aforementioned relatively output voltage of these reference voltage device 41 output voltages and this power supply device 1 of this voltage comparator 42 that utilizes, and this first electric switch 22 of these voltage comparator 42 may command connects the golden oxygen half electric switch group 34 of the back of the body with this back of the body and controls, when the output voltage of this power supply device 1 output voltage less than this reference voltage device 41, this reference voltage device 41 outputs one electrical signal selects this first electric switch 22 to be opening, and this electrical signal also sees through this inverter 5 in addition and forms anti-phase signal, and it is closed condition that anti-phase signal then selects this back of the body to connect the golden oxygen half electric switch group 34 of the back of the body, use seeing through this action of electric loop 2 of boosting, and the voltage of output power that increases this power supply device 1 is to rated voltage; On the other hand, when the output voltage of this power supply device 1 output voltage greater than this reference voltage device 41, this reference voltage device 41 outputs one electrical signal selects this first electric switch 22 to be closed condition, and this electrical signal also sees through this inverter 5 in addition and forms anti-phase signal, and it is opening that anti-phase signal then selects this back of the body to connect the golden oxygen half electric switch group 34 of the back of the body, use the action that sees through this step-down electric loop 3, and the voltage of output power that downgrades this power supply device 1 is to rated voltage.
Though the present invention discloses as above with specific embodiment; right its disclosed specific embodiment is not in order to limit the present invention; anyly be familiar with this skill person; without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations; its change of doing all belongs to category of the present invention with retouching, and protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (15)
1, a kind of power supply device of tool voltage conversion circuit comprises:
One power supply device, it can be the mode of various supply electric power;
One electric loop that boosts, it comprises a direct current boost converter and an electric switch, this this electric switch of DC boost converter connected in electrical series, and this DC boost converter increases the voltage of input electric power;
One step-down electric loop, it comprises a direct current step-down controller and a diode, this this diode of DC decompression converter connected in electrical series, and this DC decompression converter downgrades the voltage of input electric power;
One control unit will use this boost electric loop or this step-down electric loop to carry out voltage transitions in order to select this power supply device;
Wherein this electric loop that boosts is electric in parallel with this step-down electric loop, and this control unit is electrically connected the electric switch of this electric loop that boosts, and this control unit is selected the opening of this electric loop that boosts and the state in the closed condition.
2, the power supply device of tool voltage conversion circuit as claimed in claim 1, it is characterized in that: this control unit further comprises a voltage comparator and a reference voltage device, this voltage comparator one input is electrically connected this reference voltage device, another input of this voltage comparator is electrically connected to this power supply device output, one electrical signal output of the voltage comparator of this control unit is electrically connected a control end of this electronic switch, and to select this electronic switch be a state in opening and the closed condition, and this electric loop that boosts corresponds to the state in opening and the closed condition.
3, the power supply device of tool voltage conversion circuit as claimed in claim 2 is characterized in that: this electronic switch is metal-oxide-semiconductor's switch module, and this control unit is electrically connected the gate terminal of this electronic switch.
4, the power supply device of tool voltage conversion circuit as claimed in claim 1 is characterized in that: this control unit further comprises a digital signal generator and a digital analog converter; This digital signal generator is a digital signal generation device, and this digital signal generator is electrically connected the input of this digital analog converter; And this digital analog converter is that a converting digital signal is the device of analog signal, and the output of this digital analog converter is electrically connected this voltage comparator, in order to provide a reference voltage as relatively using with this power supply device output voltage.
5, the power supply device of tool voltage conversion circuit as claimed in claim 1 is characterized in that: this control unit further comprises a pulse signal generation device and a pulse signal changing voltage signal loop; This pulse signal generation device is the electric device that a generation has the pulse signal of particular duty cycle; And this pulse signal changing voltage signal loop is for being converted to pulse signal in the device of the electrical signal of one voltage, and the electrical signal of the voltage exported of this pulse signal changing voltage signal loop is to pulse signal that should the pulse signal generation device.
6, the power supply device of tool voltage conversion circuit as claimed in claim 5 is characterized in that: the pulse signal changing voltage signal loop in the voltage output device of this control unit comprises a voltage follower.
7, the power supply device of tool voltage conversion circuit as claimed in claim 1 is characterized in that: this control unit further comprises a digital signal generator, a digital analog converter and a voltage adjuster; This digital signal generator produces an electrical signal through this digital analog converter and controls this voltage adjuster, the voltage signal of this power supply device output is made a decision by this voltage comparator through the voltage of being exported behind this voltage adjuster and the output voltage of this reference voltage device in addition.
8, the power supply device of tool voltage conversion circuit as claimed in claim 7, it is characterized in that: this digital analog converter is electrically connected to the DC boost converter of this electric loop that boosts and the DC decompression converter of this reduction voltage loop, and via the electrical signal that this digital analog converter produced, control the action of this DC boost converter and this DC decompression converter by this digital signal generator.
9, the power supply device of tool voltage conversion circuit as claimed in claim 1 is characterized in that: this control unit further comprises a voltage output device and a voltage adjuster; This voltage output device produces an electrical signal and controls this voltage adjuster, and the voltage signal of this power supply device output sees through voltage and this reference voltage device output voltage that this voltage adjuster is exported in addition, is made a decision by this voltage comparator.
10, the power supply device of tool voltage conversion circuit as claimed in claim 9, it is characterized in that: the voltage output device of this control unit is electrically connected to the DC boost converter of this electric loop that boosts and the DC decompression converter of this reduction voltage loop, and, control the action of this DC boost converter and this DC decompression converter by the electrical signal that this voltage output device produced.
11, the power supply device of tool voltage conversion circuit as claimed in claim 1, it is characterized in that: this control unit is a micro-control unit, voltage in order to this power supply device of sensing, and see through the means of logic calculus and logic control, control the action of this boost electric loop and this step-down electric loop.
12, a kind of power supply device of tool voltage conversion circuit comprises:
One power supply device, it can be the mode of various supply electric power;
One electric loop that boosts, it comprises a direct current boost converter and one first electric switch, this first electric switch of this DC boost converter connected in electrical series, and this DC boost converter increases the voltage of input electric power;
One step-down electric loop, it comprises a direct current step-down controller and one second electric switch, this second electric switch of this DC decompression converter connected in electrical series, and this DC decompression converter downgrades the voltage of input electric power;
One control unit will use this boost electric loop or this step-down electric loop to carry out voltage transitions in order to select this power supply device;
Wherein this electric loop that boosts is electric in parallel with this step-down electric loop, and this control unit is electrically connected the electric switch of this electric loop that boosts, and this control unit is selected the opening of this electric loop that boosts and the state in the closed condition.
13, the power supply device of tool voltage conversion circuit as claimed in claim 12, it is characterized in that: this control unit further comprises a voltage comparator and a reference voltage device, this voltage comparator one input is electrically connected this reference voltage device, another input of this voltage comparator is electrically connected to this power supply device output, one electrical signal output of the voltage comparator of this control unit is electrically connected a control end of this first electric switch, and to select this first electric switch be a state in opening and the closed condition, and this electric loop that boosts corresponds to the state in opening and the closed condition.
14, the power supply device of tool voltage conversion circuit as claimed in claim 13, it is characterized in that: the electrical signal output of the voltage comparator in this control unit further is electrically connected an inverter input, and the output of this inverter is electrically connected to second electronic switch controling end of this step-down electric loop.
15, the power supply device of tool voltage conversion circuit as claimed in claim 14, it is characterized in that: second electric switch of this step-down electric loop is that a back of the body connects the golden oxygen half electric switch group of the back of the body, this back of the body connects the golden oxygen half electric switch group of the back of the body and comprises two electric serial connections of golden oxygen half electric switch, and the direction of the parasitic diode of these two golden oxygen half electric switches is opposite; And the output of this inverter is electrically connected to this back of the body respectively and connects two golden oxygen half electric switches of the back of the body in the golden oxygen half electric switch group.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101815974A CN101425747A (en) | 2007-10-29 | 2007-10-29 | Electric power supply device having voltage conversion circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101815974A CN101425747A (en) | 2007-10-29 | 2007-10-29 | Electric power supply device having voltage conversion circuit |
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| CN101425747A true CN101425747A (en) | 2009-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101815974A Pending CN101425747A (en) | 2007-10-29 | 2007-10-29 | Electric power supply device having voltage conversion circuit |
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