CN101060282A - Soft switching power converter circuit - Google Patents
Soft switching power converter circuit Download PDFInfo
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- CN101060282A CN101060282A CNA2006100766092A CN200610076609A CN101060282A CN 101060282 A CN101060282 A CN 101060282A CN A2006100766092 A CNA2006100766092 A CN A2006100766092A CN 200610076609 A CN200610076609 A CN 200610076609A CN 101060282 A CN101060282 A CN 101060282A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The disclosed soft-switch power converter circuit comprises: a power switch, an output rectifying diode connecting with former switch, and a buffer circuit between last two parts, wherein the rectifying diode comprises: a first/second buffer diode serial connecting between the switch and output end, a buffer inductor between the output diode and output end to inhibit the reverse recovery current, a first buffer capacitor set between former two connecting nodes, and a second buffer capacitor paralleled between two ends of the first buffer diode to inhibit the voltage peak during switching. This invention simplifies the entire structure.
Description
Technical field
The present invention relates to a kind of soft switching power converter circuit, particularly relate to a kind of soft switching power converter circuit of due to voltage spikes can effectively suppress to export rectifier diode reverse recovery current and power switch and switch the time.
Background technology
General so-called soft switching power converter circuit is meant and adds inductance and electric capacity in circuit, makes rectifier input electric current approach sine wave.And basic circuit commonly used roughly has voltage-dropping type, booster type and falling-rising die mould or the like, and as shown in figure 17, disclosing has a kind of booster type soft switching power converter circuit, and it includes:
One bridge rectifier 70, it has an input, is to be connected with the input power supply;
One boost inductance L1 is to be located on the output of bridge rectifier 70;
One power switch S1 is to be connected between outputting inductance L1 output node and the negative power end;
The first/the second buffering diode D1, D2 is to be serially connected with on a power switch S1 and the load end;
One buffer inductance Lr, the one end connects the output node of boost inductance L1;
One output rectifier diode D0 is to be connected in series with between aforementioned buffer inductance Lr output node and the load end;
One buffer capacitor Cr is to be connected in the buffer inductance Lr output node and the first/the second buffering diode D1, on the connected node of D2.
In the aforementioned circuit, buffer inductance Lr is first energy-storage travelling wave tube, and it act as the reverse recovery current that suppresses output rectifier diode D0, and can store the reverse recovery energy of output rectifier diode D0 simultaneously; Buffer capacitor Cr is second energy-storage travelling wave tube again, and it act as via the first buffering diode D1 and receives energy stored among the buffer inductance Lr, and when power switch S1 closes energy stored is transferred to load losslessly.
Though can suppress to export the reverse recovery current of rectifier diode with the design of aforesaid booster type soft switching power converter circuit, when power switch S1 closes, will occur bigger loss and stronger EMI interference.
And be to solve the problem that occurs when power switch S1 switches than lossy and EMI interference, another kind of improvement design based on aforementioned circuit has appearred, as shown in figure 18, it is to have increased by the second buffering diode D3 and the second buffer capacitor Cs on the basis of aforementioned circuit, with as an off buffer circuit, make power switch S1 by the time, the voltage on it slowly rises, and the due to voltage spikes when suppressing it and switching, to solve foregoing problems effectively.But these designs have increased a diode, make all relative increase of line loss and cost.
From the above, though existing soft switching power converter circuit can effectively suppress the reverse recovery current of output diode, but bigger loss and stronger EMI interference appear in power switch when switching, though also have at by the time improvement design of buffering effect is provided, but increased the quantity of using diode, improved cost and line loss.
This shows that above-mentioned existing soft switching power converter circuit obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of soft switching power converter circuit of new structure, just becoming the current industry utmost point needs improved target.
Because the defective that above-mentioned existing soft switching power converter circuit exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of soft switching power converter circuit of new structure, can improve general existing soft switching power converter circuit, make it have more practicality.Through constantly research, design, and, create the present invention who has practical value finally through after studying sample and improvement repeatedly.
Summary of the invention
Main purpose of the present invention is, overcome the defective that existing soft switching power converter circuit exists, and provide a kind of soft switching power converter circuit of new structure, technical problem to be solved is to make it need not increase number of diodes, loss and Electromagnetic Interference in the time of can suppressing reverse recovery current and avoid power switch to switch, thus be suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of soft switching power converter circuit that the present invention proposes, it includes: a power switch; One output rectifier diode is to be connected with aforementioned power switches; One buffer circuit is to be connected between a power switch and the output; This buffer circuit includes: the first/the second buffering diode is serially connected with between power switch and the output; One buffer inductance is to be serially connected with between output rectifier diode and the output; One first buffer capacitor is to be connected on the output rectifier diode/buffer inductance connected node and the first/the second buffering diode connected node; One second buffer capacitor is the two ends that are connected to first buffering diode.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid soft switching power converter circuit, the anode of the input of wherein said power switch and output rectifier diode further connects a boost inductance, and the input of boost inductance is to connect a bridge rectifier.
Aforesaid soft switching power converter circuit, wherein said power switch are metal-oxide-semifield-effect electric crystals.
The object of the invention to solve the technical problems also realizes by the following technical solutions.According to a kind of soft switching power converter circuit that the present invention proposes, it includes: a power switch, and the one end is connected with the input power supply; One buck inductor is to be serially connected with between power switch and the output; One buffer circuit is to be connected between power switch and the buck inductor; One output rectifier diode is to be connected with the power switch output by buffer circuit; Wherein: this buffer circuit includes: the first/the second buffering diode is to be serially connected with between the negative power end of power switch and output; One buffer inductance is to be serially connected with between output rectifier diode and the power switch output; One first buffer capacitor is to be connected on the output rectifier diode/buffer inductance connected node and the first/the second buffering diode connected node; One second buffer capacitor is the two ends that are connected to first buffering diode.
The object of the invention to solve the technical problems also realizes in addition by the following technical solutions.According to a kind of soft switching power converter circuit that the present invention proposes, it includes: a power switch, and the one end is connected with the input power supply; One buck inductor is to be serially connected with between power switch and the output; One buffer circuit is to be connected between power switch and the buck inductor; One output rectifier diode is to be connected with the power switch output by buffer circuit; Wherein: this buffer circuit includes: the first/the second buffering diode is to be serially connected with between the negative power end of power switch and output; One buffer inductance is to be serially connected with between output rectifier diode and the power switch output; One first buffer capacitor is to be connected on the output rectifier diode/buffer inductance connected node and the first/the second buffering diode connected node; One second buffer capacitor is the two ends that are connected to the output rectifier diode.
The object of the invention to solve the technical problems also realizes in addition by the following technical solutions.According to a kind of soft switching power converter circuit that the present invention proposes, it includes: a power switch, and the one end is connected with the input power supply; One falling-rising piezoelectricity sense is to be serially connected with between the positive power source terminal of a power switch and an output; One output rectifier diode, its negative electrode is to be connected with the power switch output; One buffer circuit is to be connected between output rectifier diode, the sense of falling-rising piezoelectricity and the output; Wherein: this buffer circuit includes: the first/the second buffering diode is to be serially connected with between power switch and the output; One buffer inductance is to be serially connected with between output rectifier diode anode and the output; One first buffer capacitor is to be connected with the output rectifier diode anode and the first buffering diode anode respectively; One second buffer capacitor is the two ends that are parallel to the output rectifier diode.
The object of the invention to solve the technical problems also realizes in addition by the following technical solutions.According to a kind of soft switching power converter circuit that the present invention proposes, it includes: a power switch, and the one end is connected with the input power supply; One falling-rising piezoelectricity sense is to be serially connected with between the positive power source terminal of a power switch and an output; One output rectifier diode, its negative electrode is to be connected with the power switch output; One buffer circuit is to be connected between output rectifier diode, the sense of falling-rising piezoelectricity and the output; Wherein: this buffer circuit includes: the first/the second buffering diode is to be serially connected with between power switch and the output; One buffer inductance is to be serially connected with between output rectifier diode anode and the output; One first buffer capacitor is to be connected with the output rectifier diode anode and the first buffering diode anode respectively; One second buffer capacitor is the two ends that are parallel to first buffering diode.
The object of the invention to solve the technical problems also realizes in addition by the following technical solutions.A kind of soft switching power converter circuit according to the present invention proposes is characterized in that it includes: a power switch, and the one end is connected with the input power supply; One falling-rising piezoelectricity sense is to be serially connected with between the positive power source terminal of a power switch and an output; One buffer circuit is to be connected between power switch, the sense of falling-rising piezoelectricity and the output; One output rectifier diode is to be connected between buffer circuit and the output; Wherein: this buffer circuit includes: the first/the second buffering diode is to be serially connected with between power switch and the output; One buffer inductance is to be serially connected with between output rectifier diode and the power switch; One first buffer capacitor is to be connected with the output rectifier diode negative electrode and the first buffering diode anode respectively; One second buffer capacitor is the two ends that are parallel to second buffering diode.
The object of the invention to solve the technical problems also realizes in addition by the following technical solutions.According to a kind of soft switching power converter circuit that the present invention proposes, it includes: a power switch, and the one end is connected with the input power supply; One falling-rising piezoelectricity sense is to be serially connected with between the positive power source terminal of a power switch and an output; One buffer circuit is to be connected between power switch, the sense of falling-rising piezoelectricity and the output; One output rectifier diode is to be connected between buffer circuit and the output; Wherein: this buffer circuit includes: the first/the second buffering diode is to be serially connected with between power switch and the output; One buffer inductance is to be serially connected with between output rectifier diode and the power switch; One first buffer capacitor is to be connected with the output rectifier diode negative electrode and the first buffering diode anode respectively; One second buffer capacitor is the two ends that are parallel to the output rectifier diode.
The present invention compared with prior art has tangible advantage and beneficial effect.As known from the above, in order to achieve the above object, the invention provides a kind of soft switching power converter circuit, it includes: a power switch; One output rectifier diode is to be connected with aforementioned power switches; One buffer circuit is to be connected between a power switch and the output; This buffer circuit includes: the first/the second buffering diode is serially connected with between power switch and the output; One buffer inductance is to be serially connected with between output rectifier diode and the output; One first buffer capacitor is to be connected on the output rectifier diode/buffer inductance connected node and the first/the second buffering diode connected node; One second buffer capacitor is the two ends that are connected to first buffering diode; The aforementioned circuit design also can be applicable to voltage-dropping type, falling-rising die mould power converter circuit.
Via as can be known above-mentioned, the present invention is a kind of soft switching power converter circuit, includes output rectifier diode, that a power switch, is connected with power switch and is connected in buffer circuit between a power switch and the output; Wherein: this buffer circuit comprises the first/the second buffering diode, that is serially connected with between power switch and the output and is serially connected with second buffer capacitor that first buffer capacitor, that buffer inductance, between output rectifier diode and the output is connected in the output rectifier diode/buffer inductance connected node and the first/the second buffering diode connected node is connected to the first buffering diode two ends; Utilize aforementioned circuit design, the due to voltage spikes in the time of can suppressing the reverse recovery current of output rectifier diode and utilize second buffer capacitor that voltage on the power switch is slowly risen to suppress its switching by buffer inductance; And afore-mentioned characteristics is to use under the prerequisite of less element and reaches.
By technique scheme, soft switching power converter circuit of the present invention has following advantage at least:
In the aforementioned circuit design, be the reverse recovery current that suppresses the output rectifier diode by buffer inductance, and second buffer capacitor can make the voltage on the power switch slowly rise when power switch ends, due to voltage spikes when switching to suppress it, thus avoid EMI to disturb; Because the present invention utilizes special loop design to be able to reach aforementioned effect under the prerequisite that does not increase number of diodes, not only can avoid line loss, also can reduce cost.
In sum, the soft switching power converter circuit of novelty of the present invention need not increase number of diodes, loss and Electromagnetic Interference in the time of can suppressing reverse recovery current and avoid power switch to switch.The present invention has above-mentioned plurality of advantages and practical value, no matter it all has bigger improvement on product structure or function, obvious improvement is arranged technically, and produced handy and practical effect, and more existing soft switching power converter circuit has the effect of enhancement, thereby being suitable for practicality more, and having the extensive value of industry, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the detailed circuit diagram of a preferred embodiment of the present invention.
Fig. 2 is the detailed circuit diagram that a preferred embodiment of the present invention indicates the sense of current and symbol.
Fig. 3 is the performance diagram of a preferred embodiment of the present invention.
Fig. 4 to Figure 10 is the detailed circuit and the sense of current schematic diagram of a preferred embodiment of the present invention.
Figure 11 is the detailed circuit diagram of the present invention's second preferred embodiment.
Figure 12 is the detailed circuit diagram of the present invention's the 3rd preferred embodiment.
Figure 13 is the detailed circuit diagram of the present invention's the 4th preferred embodiment.
Figure 14 is the detailed circuit diagram of the present invention's the 5th preferred embodiment.
Figure 15 is the detailed circuit diagram of the present invention's the 6th preferred embodiment.
Figure 16 is the detailed circuit diagram of the present invention's the 7th preferred embodiment.
Figure 17 is the detailed circuit diagram of an existing soft switching power converter circuit.
Figure 18 is the detailed circuit diagram of another existing soft switching power converter circuit.
10,70: bridge rectifier
20,30,40,50: buffer circuit
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of soft switching power converter circuit, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
A relevant preferred embodiment of the present invention sees also shown in Figure 1ly, and it is the soft switching power converter circuit of a booster type, and the physical circuit structure is detailed as described below, and it comprises:
One bridge rectifier 10, its input are to be connected with input power supply Vin;
One boost inductance L1, the one end is connected with the output of bridge rectifier 10;
One power switch S1, it can be metal-oxide-semifield-effect electric crystal constant power type electric crystal formation, and the one end is the end in addition that connects boost inductance L1;
One output rectifier diode D0, its anode are connected with the end in addition of boost inductance L1;
One buffer circuit 20 is to be connected between an aforementioned power switches S1 and the output end vo, the due to voltage spikes when switching in order to the reverse recovery current that suppresses output rectifier diode D0 and power switch S1;
One filter capacitor Co is to be connected on the output end vo.Wherein:
The composition of this buffer circuit 20 includes:
The first/the second buffering diode D1, D2 is to be serially connected with between power switch S1 and the output end vo;
One buffer inductance Lr is to be serially connected with between output rectifier diode D0 and the output end vo;
One first buffer capacitor Cr is to be connected in the output rectifier diode D0/ buffer inductance Lr connected node and the first/the second buffering diode D1, on the D2 connected node;
One second buffer capacitor Cs is the two ends that are connected to the first buffering diode D1.
From the above, the concrete formation of this buffer circuit 20 and with the annexation of other elements, how to reach due to voltage spikes when suppressing output rectifier diode D0 reverse recovery current and power switch S1 and switching as for it, below careful registration property curve chart describe in detail as the back:
At first please cooperate and consult Fig. 2, shown in Figure 3, wherein Fig. 2 indicates the current signal have by each main element, and Fig. 3 then is the characteristic curve of these current signal change procedures of expression, below sincerely is fundamental analysis with the sequential as the back:
Phase I (t0-t1): as shown in Figure 4.At t0 constantly, the controlled conducting of power switch S1.It is big that the electric current of power switch S1 of flowing through subsequently begins to become, the electric current of the output rectifier diode D0 that flows through begin to descend (in a switch periods, the input current supposition is constant).Because the existence of buffer inductance Lr makes that the electric current rate of descent on the output rectifier diode D0 is di/dt=Vo/Lr.Compare with hard switching, its electric current descends slowly, can effectively reach the purpose that suppresses output rectifier diode D0 reverse recovery current.
Second stage (t1-t2): as shown in Figure 5.At t1 constantly, the reverse recovery current of the output rectifier diode D0 that flows through reaches maximum and begins rapid recovery, exports rectifier diode D0 blocking-up subsequently.After output rectifier diode D0 ended, the buffer inductance Lr and the first buffer capacitor Cr, the second buffer capacitor Cs produced resonance, and under the effect of output voltage, it is big that the current resonance of the buffer inductance Lr that flows through becomes, and also the resonance change is big for the voltage at Cs two ends simultaneously.
Phase III (t2-t3): as shown in Figure 6.At t2 constantly, the voltage resonance at the second buffer capacitor Cs two ends is during to Vo, force the second buffering diode D2 conducting, then the buffer inductance Lr and the first buffer capacitor Cr continue resonance, the energy that is stored among the buffer inductance Lr shifts to the first buffer capacitor Cr, electric current up to the buffer inductance Lr that flows through is zero, and the voltage resonance at the first buffer capacitor Cr two ends is to maximum.
Quadravalence section (t3-t4): as shown in Figure 7.At t3 constantly, power switch S1 ends, because the existence of the second buffer capacitor Cs, the voltage at power switch S1 two ends slowly rises, and its voltage build-up rate is dv/dt=Iin/Cs, and this moment, power switch S1 realized zero voltage switching.Simultaneously, the first buffer capacitor Cr and buffer inductance Lr resonance, the energy that is stored among the first buffer capacitor Cr begins to shift to buffer inductance L r.
Five-stage (t4-t5): as shown in Figure 8.At t4 constantly, the voltage on the second buffer capacitor Cs drops to zero, the first buffering diode D1 conducting.The first buffer capacitor Cr and buffer inductance Lr continue resonance, and the voltage resonance on the first buffer capacitor Cr is to zero.
The 6th stage (t5-t6): as shown in Figure 9.At t5 constantly, after this voltage resonance on the first buffer capacitor Cr is exported rectifier diode D0 and is begun conducting to zero.Then in this stage output rectifier diode D0, the first buffering diode D1, second buffering diode D2 conducting simultaneously, be added in the voltage VLr=VD1+VD2-VD0 at buffer inductance Lr two ends, the electric current of the buffer inductance Lr that flows through continues to increase under the effect of VLr.
The 7th stage (t6-t7): as shown in figure 10.At t6 constantly, the electric current of the buffer inductance Lr that flows through increases to input current Iin, and simultaneously, the electric current of the first buffering diode D1 that flows through, the second buffering diode D2 branch road reduces to zero.Circuit will be returned to the working condition of phase I subsequently.
Can understand the detailed operation principle of a preferred embodiment of the present invention by above-mentioned explanation, through further concluding, its characteristic is as follows as can be known:
1, buffer inductance Lr suppresses the reverse recovery current of output rectifier diode D0, the energy among the first buffer capacitor Cr store buffer inductance L r, and lossless the transfer given load.
2, the first/the second buffering diode D1, D2 provides a low-impedance path when power switch S1 ends, make the voltage after power switch S1 ends be clamped on output voltage.
3, owing to be subjected to the influence of the second buffer capacitor Cs, make power switch S1 by the time voltage slowly rise, thereby due to voltage spikes when effectively having suppressed power switch S1 and switching.
4, the present invention is using less element to reach aforementioned effect, compared to traditional soft switching power converter circuit, is possessing higher efficient.
Be the power converter circuit that the present invention is used in booster type (BOOST) in the previous embodiment, in addition, the present invention also can be applicable on voltage-dropping type (BUCK), falling-rising die mould (BUCK-BOOST) the such power converters circuit.
See also shown in Figure 11ly, disclose the soft switching power converter circuit that a kind of voltage-dropping type is arranged, it includes:
One power switch S1, the one end is connected with input power supply Vin;
One buck inductor L1 is to be serially connected with between power switch S1 and the output end vo;
One buffer circuit 30 is to be connected between power switch S1 and the buck inductor L1;
One output rectifier diode D0 is to see through buffer circuit 30 to be connected with power switch S1 output;
Wherein:
This buffer circuit 30 includes:
The first/the second buffering diode D1, D2 is to be serially connected with between the negative power end of power switch S1 and output end vo;
One buffer inductance Lr is to be serially connected with between output rectifier diode D0 and the power switch S1 output;
One first buffer capacitor Cr is to be connected in the output rectifier diode D0/ buffer inductance Lr connected node and the first/the second buffering diode D1, on the D2 connected node;
One second buffer capacitor Cs is the two ends that are connected to the first buffering diode D1.
See also shown in Figure 12ly, disclose the soft switching power converter circuit of another voltage-dropping type, its basic framework is identical with last embodiment, difference be in: the second buffer capacitor Cs in the buffer circuit 30 is the two ends that are parallel to output rectifier diode D0.
See also shown in Figure 13ly again, disclose the soft switching power converter circuit that a kind of falling-rising die mould is arranged, it includes:
One power switch S1, the one end is connected with input power supply Vin;
One falling-rising piezoelectricity sense L1 is to be serially connected with between the positive power source terminal of a power switch S1 and an output end vo;
One output rectifier diode D0, its negative electrode is to be connected with power switch S1 output;
One buffer circuit 40 is connected between output rectifier diode D0, falling-rising piezoelectricity sense L1 and the output end vo; Wherein:
This buffer circuit 40 includes:
The first/the second buffering diode D1, D2 is to be serially connected with between power switch S1 and the output end vo;
One buffer inductance Lr is serially connected with between output rectifier diode D0 anode and the output end vo;
One first buffer capacitor Cr is to be connected with the output rectifier diode D0 anode and the first buffering diode D1 anode respectively;
One second buffer capacitor Cs is parallel to the two ends of exporting rectifier diode D0.
See also shown in Figure 14ly, show the soft switching power converter circuit of another falling-rising die mould, basic framework is identical with last embodiment, and existing together is: the second buffer capacitor Cs in the buffer circuit 40 is the two ends that are parallel to the first buffering diode D1.
See also shown in Figure 15, the soft switching power converter circuit that shows another falling-rising die mould, basic framework is with before to take off embodiment roughly the same, exist together and be: the buffer inductance Lr in the buffer circuit 50 is serially connected between power switch S1 and the output rectifier diode D0, and the second buffer capacitor Cs is the two ends that are parallel to the second buffering diode D2.
See also shown in Figure 16ly, disclose the soft switching power converter circuit of another kind of falling-rising die mould, its basic framework is identical with last embodiment, difference be in: the second buffer capacitor Cs in the buffer circuit 50 is the two ends that are parallel to output rectifier diode D0.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (9)
1, a kind of soft switching power converter circuit is characterized in that it includes:
One power switch;
One output rectifier diode is to be connected with aforementioned power switches;
One buffer circuit is to be connected between a power switch and the output; This buffer circuit includes:
The first/the second buffering diode is serially connected with between power switch and the output;
One buffer inductance is to be serially connected with between output rectifier diode and the output;
One first buffer capacitor is to be connected on the output rectifier diode/buffer inductance connected node and the first/the second buffering diode connected node;
One second buffer capacitor is the two ends that are connected to first buffering diode.
2, soft switching power converter circuit according to claim 1 is characterized in that the input of this power switch wherein and the anode of output rectifier diode further connect a boost inductance, and the input of boost inductance is to connect a bridge rectifier.
3, soft switching power converter circuit according to claim 1 and 2 is characterized in that wherein this power switch is a metal-oxide-semifield-effect electric crystal.
4, a kind of soft switching power converter circuit is characterized in that it includes:
One power switch, the one end is connected with the input power supply;
One buck inductor is to be serially connected with between power switch and the output;
One buffer circuit is to be connected between power switch and the buck inductor;
One output rectifier diode is to be connected with the power switch output by buffer circuit; Wherein:
This buffer circuit includes:
The first/the second buffering diode is to be serially connected with between the negative power end of power switch and output;
One buffer inductance is to be serially connected with between output rectifier diode and the power switch output;
One first buffer capacitor is to be connected on the output rectifier diode/buffer inductance connected node and the first/the second buffering diode connected node;
One second buffer capacitor is the two ends that are connected to first buffering diode.
5, a kind of soft switching power converter circuit is characterized in that it includes:
One power switch, the one end is connected with the input power supply;
One buck inductor is to be serially connected with between power switch and the output;
One buffer circuit is to be connected between power switch and the buck inductor;
One output rectifier diode is to be connected with the power switch output by buffer circuit; Wherein:
This buffer circuit includes:
The first/the second buffering diode is to be serially connected with between the negative power end of power switch and output;
One buffer inductance is to be serially connected with between output rectifier diode and the power switch output;
One first buffer capacitor is to be connected on the output rectifier diode/buffer inductance connected node and the first/the second buffering diode connected node;
One second buffer capacitor is the two ends that are connected to the output rectifier diode.
6, a kind of soft switching power converter circuit is characterized in that it includes:
One power switch, the one end is connected with the input power supply;
One falling-rising piezoelectricity sense is to be serially connected with between the positive power source terminal of a power switch and an output;
One output rectifier diode, its negative electrode is to be connected with the power switch output;
One buffer circuit is to be connected between output rectifier diode, the sense of falling-rising piezoelectricity and the output; Wherein: this buffer circuit includes:
The first/the second buffering diode is to be serially connected with between power switch and the output;
One buffer inductance is to be serially connected with between output rectifier diode anode and the output;
One first buffer capacitor is to be connected with the output rectifier diode anode and the first buffering diode anode respectively;
One second buffer capacitor is the two ends that are parallel to the output rectifier diode.
7, a kind of soft switching power converter circuit is characterized in that it includes:
One power switch, the one end is connected with the input power supply;
One falling-rising piezoelectricity sense is to be serially connected with between the positive power source terminal of a power switch and an output;
One output rectifier diode, its negative electrode is to be connected with the power switch output;
One buffer circuit is to be connected between output rectifier diode, the sense of falling-rising piezoelectricity and the output; Wherein: this buffer circuit includes:
The first/the second buffering diode is to be serially connected with between power switch and the output;
One buffer inductance is to be serially connected with between output rectifier diode anode and the output;
One first buffer capacitor is to be connected with the output rectifier diode anode and the first buffering diode anode respectively;
One second buffer capacitor is the two ends that are parallel to first buffering diode.
8, a kind of soft switching power converter circuit is characterized in that it includes:
One power switch, the one end is connected with the input power supply;
One falling-rising piezoelectricity sense is to be serially connected with between the positive power source terminal of a power switch and an output;
One buffer circuit is to be connected between power switch, the sense of falling-rising piezoelectricity and the output;
One output rectifier diode is to be connected between buffer circuit and the output; Wherein: this buffer circuit includes:
The first/the second buffering diode is to be serially connected with between power switch and the output;
One buffer inductance is to be serially connected with between output rectifier diode and the power switch;
One first buffer capacitor is to be connected with the output rectifier diode negative electrode and the first buffering diode anode respectively;
One second buffer capacitor is the two ends that are parallel to second buffering diode.
9, a kind of soft switching power converter circuit is characterized in that it includes:
One power switch, the one end is connected with the input power supply;
One falling-rising piezoelectricity sense is to be serially connected with between the positive power source terminal of a power switch and an output;
One buffer circuit is to be connected between power switch, the sense of falling-rising piezoelectricity and the output;
One output rectifier diode is to be connected between buffer circuit and the output; Wherein: this buffer circuit includes:
The first/the second buffering diode is to be serially connected with between power switch and the output;
One buffer inductance is to be serially connected with between output rectifier diode and the power switch;
One first buffer capacitor is to be connected with the output rectifier diode negative electrode and the first buffering diode anode respectively;
One second buffer capacitor is the two ends that are parallel to the output rectifier diode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW095113134A TW200740096A (en) | 2006-04-13 | 2006-04-13 | Soft-switching power converter circuit |
| CNB2006100766092A CN100459381C (en) | 2006-04-13 | 2006-04-19 | Soft switching power converter circuit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW095113134A TW200740096A (en) | 2006-04-13 | 2006-04-13 | Soft-switching power converter circuit |
| CNB2006100766092A CN100459381C (en) | 2006-04-13 | 2006-04-19 | Soft switching power converter circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101060282A true CN101060282A (en) | 2007-10-24 |
| CN100459381C CN100459381C (en) | 2009-02-04 |
Family
ID=50156499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100766092A Expired - Fee Related CN100459381C (en) | 2006-04-13 | 2006-04-19 | Soft switching power converter circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100459381C (en) |
| TW (1) | TW200740096A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888734A (en) * | 2009-05-13 | 2010-11-17 | 通用电气公司 | Electronic ballast of belt lifting/voltage reducing power-factor correction DC-DC converter |
| WO2015070515A1 (en) * | 2013-11-18 | 2015-05-21 | 东林科技股份有限公司 | Power conversion device and conversion method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195470A (en) * | 2011-03-04 | 2011-09-21 | 深圳Tcl新技术有限公司 | Booster circuit and liquid crystal backlight module |
| CN105337486B (en) * | 2014-08-13 | 2019-05-10 | 亚荣源科技（深圳）有限公司 | The passive type coupling inductance soft-switching circuit of power factor corrector |
| CN107068103B (en) * | 2017-05-27 | 2018-08-24 | 惠科股份有限公司 | Potential transfer circuit, driving method and its display panel of application |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1123962C (en) * | 2000-12-21 | 2003-10-08 | 艾默生网络能源有限公司 | Soft switching method for power switching transistor of DC converter and soft-switching DC converter |
| CN2602543Y (en) * | 2002-11-08 | 2004-02-04 | 钱龙圣 | Soft switch circuit without depletion absorption |
| US6882548B1 (en) * | 2003-02-24 | 2005-04-19 | Tyco Electronics Power Systems, Inc. | Auxiliary active clamp circuit, a method of clamping a voltage of a rectifier switch and a power converter employing the circuit or method |
| CN100405717C (en) * | 2004-06-25 | 2008-07-23 | 台达电子工业股份有限公司 | Soft switching DC/DC converter with less assembly |
-
2006
- 2006-04-13 TW TW095113134A patent/TW200740096A/en not_active IP Right Cessation
- 2006-04-19 CN CNB2006100766092A patent/CN100459381C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888734A (en) * | 2009-05-13 | 2010-11-17 | 通用电气公司 | Electronic ballast of belt lifting/voltage reducing power-factor correction DC-DC converter |
| CN101888734B (en) * | 2009-05-13 | 2014-07-16 | 通用电气公司 | Electronic ballast of belt lifting/voltage reducing power-factor correction DC-DC converter |
| WO2015070515A1 (en) * | 2013-11-18 | 2015-05-21 | 东林科技股份有限公司 | Power conversion device and conversion method thereof |
| CN104660069A (en) * | 2013-11-18 | 2015-05-27 | 东林科技股份有限公司 | Power conversion device and conversion method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI309913B (en) | 2009-05-11 |
| TW200740096A (en) | 2007-10-16 |
| CN100459381C (en) | 2009-02-04 |
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