CN103748776A - Light source lighting device - Google Patents
Light source lighting device Download PDFInfo
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- CN103748776A CN103748776A CN201180072873.8A CN201180072873A CN103748776A CN 103748776 A CN103748776 A CN 103748776A CN 201180072873 A CN201180072873 A CN 201180072873A CN 103748776 A CN103748776 A CN 103748776A
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- winding
- light source
- power supply
- ignition device
- coil
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/08—High-leakage transformers or inductances
- H01F38/10—Ballasts, e.g. for discharge lamps
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
- H01F2027/2819—Planar transformers with printed windings, e.g. surrounded by two cores and to be mounted on printed circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
- H05B45/38—Switched mode power supply [SMPS] using boost topology
Abstract
In the present invention, of a primary coil (P1) resulting from a conductive foil formed into a spiral at the obverse surface of printed circuit board (2), the inner end (P1a) is connected via a through-hole (3) to the end (P2a) of a spiral coil formed at the reverse surface, and the outer ends (P1b and P2b) are the terminals of the primary coil of a transformer (1). The conductive foil is extended from a point at the outer perimeter of the spiral primary coil (P1) to form a center tap (X) (extension line), and the control power source of a DC/DC conversion unit is generated using the voltage arising at the center tap (X).
Description
Technical field
The present invention relates to a kind of light source ignition device, in this light source ignition device, on the transformer using or coil, be provided with centre tap (lead-out wire) in providing the DC/DC transducer of the power of lighting a lamp to the light source of vehicle mounted light fixture, and use the voltage producing on centre tap (lead-out wire) to generate control power supply.
Background technology
For the light source of vehicle mounted, replace traditional osram lamp, life-span length and brighter discharge lamp (High Intensity Discharge; HID lamp: high-intensity gas discharge lamp), do not need to safeguard and the less LED (Light Emitting Diode: light-emitting diode) of power consumption more and more universal.
The life-span of this discharge lamp, LED is long, power consumption is less, is therefore suitable for use as the light source of vehicle mounted, but owing to cannot utilizing on-vehicle battery directly to light a lamp, therefore needs to use the ignition device that possesses the DC/DC transducer of lighting a lamp for light source.For this ignition device, require it in the various environment including the fluctuation of supply voltage, to keep the stability of action, and require its miniaturization and cost degradation, these requirements are mobile unit problems for a long time, as being the countermeasure of the problem of stability about the former, even if existence possesses the method that also can maintain the control power supply of the action of the DC/DC transducer of lighting a lamp for light source in the situation that supply voltage is lower, as being the countermeasure of the problem of miniaturization and cost degradation about the latter, there is use chip transformer simple in structure or the coil method as the DC/DC transducer of lighting a lamp for light source.If chip transformer or coil at the latter's the DC/DC transducer of lighting a lamp for light source have the lead division (centre tap) that extracts free voltage, that just can easily form the control power supply of tackling the problem that the former supply voltage is lower.As this, on sheet type coil, form and have tapped conventional example, for example, be recorded in following patent documentation 1,2.
But this printed coil, structure, can only be configured for tapped conductive pattern in the periphery of the conductive pattern for winding.Thus, on substrate surface in the multiple substrates after stacked, that become face side and rear side, form coil and coil terminals, surface at the substrate being clipped in the middle forms coil and centre tap, rather than draws tapped structure from the surface of the substrate identical with coil terminals.
In addition, patent documentation 2 relates to the invention of following content, that is: the helical form and a pair of coil concentric circles, that loop length is roughly equal that utilize the multiple spiral helicine pattern forming respectively on face of printed base plate and another face to use in forming antenna.For one of them coil, from the peripheral part being provided with a face of coil terminals, start to be wound to central part, at central part, be connected with the coil on another face, and start to be wound to peripheral part from central part.Another one coil is also identical, from the peripheral part being provided with a face of coil terminals, starts to be wound to central part, is connected, and starts to be wound to peripheral part from central part at central part with the coil on another face.Two coils are connected in series by being connected to realize with the coil terminals of peripheral part one side, and the tie point of these two coils becomes for tapped pattern.
Prior art document
Patent documentation
Patent documentation 1: Japan Patent is opened clear 58-124916 communique in fact
Patent documentation 2: Japanese Patent Laid-Open 2001-167928 communique
Summary of the invention
Invent technical problem to be solved
Conventional process is not use the such chip transformer of above-mentioned patent documentation 1,2, but at the wire coil by general in the transformer forming, in the centre of winding, centre tap is set, thereby draw intermediate voltage, as power supply, use.
On the other hand, at above-mentioned patent documentation 1, in 2 such chip transformers, adopted following structure, that is: multiple of printed base plate or layer on be formed with spiral-shaped conductive foil, at spiral central part, these multiple conductive foils are coupled together as winding, and this winding and magnetic component (iron core) are combined, therefore,, structure, the lead division that becomes tapped lead-out wire can only be configured in the outer circumferential side of spiral-shaped conductive foil.; be formed with respectively in multiple structures that are wound into spiral-shaped conductive foil overleaf with on two faces on surface; although the outer peripheral portion at spiral-shaped conductive foil is provided with centre tap; but owing to can only using the winding of a circle amount to be used as for tapped winding; therefore; as the control power supply of DC/DC transducer, the undertension of this intermediate voltage.
Therefore, arranging in tapped situation, need to manage as above-mentioned patent documentation 1, to the multiple substrates that are formed with the winding being formed by helical form conductive foil, carry out stacked, outer circumferential side at the helical form conductive foil of the substrate being clipped in the middle arranges centre tap, or as above-mentioned execution mode 2, uses surface and this two sides, the back side of printed base plate, forms the multiple windings that consist of helical form conductive foil, these windings in series are connected, and draw pattern as centre tap from its tie point.
But, in the structure of above-mentioned patent documentation 1, in order to form with tapped coil, need 4 layers of above helical form conductive foil.Therefore,, in order to utilize this structure to form the transformer with secondary winding, just need more multi-layered helical form conductive foil.Therefore, the required expense of multilager base plate is higher, and for cheap equipment, this is not preferred structure.
In addition, in the structure of above-mentioned patent documentation 2, multiple due to main winding is divided into, therefore the structure of winding becomes complicated, meanwhile, can exist the sectional area of main winding to narrow, and is difficult to guarantee to flow through the disadvantage such as sectional area of enough electric currents.Therefore, from the angle of miniaturization and high efficiency, this is not preferred structure.
Therefore, there is following problem, that is:, for existing chip transformer or sheet type coil, because the number of turn of winding is more, thereby cause expense to become high, be not suitable for miniaturization and high efficiency.Thus, if existing chip transformer or sheet type coil are directly used in to DC/DC transducer, tapped voltage cannot be used in to control power supply.From above-mentioned patent documentation 1,2, be not yet documented in DC/DC transducer and use sheet type coil, and to controlling power supply, derive the such structure of power from centre tap.In addition, at above-mentioned patent documentation 1, in 2, be not described below structure:, at the upper helical form conductive foil that forms of the face identical with the face that is provided with coil terminals (or layer), from the outer peripheral portion of this helical form conductive foil, draw and become tapped lead-out wire yet.
The present invention completes in order to solve above-mentioned problem, the object of the present invention is to provide a kind of light source ignition device, this light source ignition device adopts following structure, that is: on the face that is provided with coil terminals, be formed for the helical form conductive foil of winding, from the peripheral part of this conductive foil, draw and become tapped lead-out wire, thus, when trying hard to realize miniaturization and cost degradation, can go out free voltage from middle tap extraction and generate DC/DC transducer control power supply, thereby the action that makes to light a lamp keeps stable.
The technical scheme that technical solution problem adopts
Light source ignition device of the present invention comprises DC/DC converter section, and this DC/DC converter section is used the transformer or the coil that winding and magnetic component, consist of, and from power supply, generates the power of the use of lighting a lamp, and wherein, this winding is formed by spiral helicine conductive member; Centre tap (lead-out wire), draws this centre tap from the face identical with the terminal of winding that forms transformer or coil; Control circuit portion, this control circuit portion controls DC/DC converter section; And control power supply unit, this control power supply unit is from the supply of centre tap (lead-out wire) received power, and provides to control circuit portion the power supply of controlling use.
Invention effect
According to the present invention, a kind of light source ignition device can be provided, this light source ignition device can be by drawing and become tapped lead-out wire from the face identical with the terminal of winding that forms transformer or coil, to controlling power supply unit, provide power, thereby make transformer or coil realize miniaturization and cost degradation, meanwhile, can generate the power supply that the control of DC/DC transducer is used by go out free voltage from middle tap extraction, thereby can carry out the stable action of lighting a lamp.
Accompanying drawing explanation
Fig. 1 is exploded perspective view that use, chip transformer in the related light source ignition device of embodiments of the present invention 1.
Fig. 2 is the cutaway view that the transformer shown in Fig. 1 is cut off along AA line.
Fig. 3 is the winding construction of the transformer shown in presentation graphs 1 and the figure of circuit structure.
Fig. 4 is the circuit diagram that represents the structure of the related light source ignition device of embodiments of the present invention 1.
Fig. 5 is exploded perspective view that use, sheet type coil in the related light source ignition device of embodiments of the present invention 1.
Fig. 6 is the circuit diagram that represents the variation of the related light source ignition device of execution mode 1, is the example of having used the coil shown in Fig. 5.
Fig. 7 is the circuit diagram that represents the variation of the related light source ignition device of execution mode 1, is the example of having used autotransformer.
Fig. 8 illustrates the chip transformer using in the related light source ignition device of embodiments of the present invention 2, and Fig. 8 (a) is vertical view, and Fig. 8 (b) is the cutaway view cutting off along BB line.
Fig. 9 is the cutaway view of the variation of the transformer shown in presentation graphs 8.
Embodiment
Below, for the present invention will be described in more detail, with reference to accompanying drawing, to implementing mode of the present invention, describe.
As shown in Figures 1 and 2, the transformer 1 of chip comprises: at the top layer of the printed base plate 2 of multilayer and back layer one circle one, reel conductive foil all over the ground and the winding P1, the P2 that form respectively; The winding S1, the S2 that in two-layer intermediate layer, conductive foil three circles three are wound into helical form all over the ground respectively and form; From the peripheral part of winding P1, draw conductive foil and the lead-out wire that forms, i.e. centre tap X; And magnetic component 8,13.
In Fig. 3, omitted the diagram of printed base plate 2, Fig. 3 can observe winding P1, P2, and S1, the exploded perspective view of the structure of S2 also shows the circuit structure example of printed base plate 2 except transformer 1.The detailed content of circuit structure will be set forth below.
As shown in FIG. 1 to 3, end P1a, the P2a of the spiral of winding P1, P2 inner side connects by the through hole 3 that runs through printed base plate 2 and form, and this winding P1, P2 form one group of winding.End P1b, the P2b in the spiral outside of winding P1, P2 are connected with the circuit elements device being arranged on printed base plate 2.
End S1a, the S2a of the spiral inner side of winding S1, S2 connects by the through hole 4 that runs through printed base plate 2 and form, and this winding S1, S2 form one group of secondary winding.End S1b, the S2b in the spiral outside of winding S1, S2 are connected with the circuit elements device being arranged on printed base plate 2.
In addition, the outer peripheral portion that is end P1a from the tie point of winding P1 and winding P2 is drawn conductive foil, forms centre tap X (lead-out wire).The top layer of the printed base plate 2 that this centre tap X-shaped Cheng Yu winding P1 is identical, and be connected with the circuit elements device being arranged on printed base plate 2.Thus, can on the face identical with the end P1b of terminal that is equivalent to a winding, centre tap X be set, therefore, compare with the existing chip transformer that above-mentioned patent documentation 1,2 is such, this structure is more simple, and can realize miniaturization and cost degradation.
In addition, in illustrated example, on the top layer of printed base plate 2, at the peripheral part of winding P1, form centre tap X, but be not limited to this, also can, in the back layer of printed base plate 2, at the peripheral part of winding P2, form centre tap X.
The iron core of transformer 1 is the combination of ER shaped iron core and I shaped iron core, it is so-called EIR iron core, the magnetic component 8 of ER type, by flat part 9, at the outstanding central shank 10 arranging of central portion of this flat part 9, and forms in the outstanding outboard legs arranging 11,12 in the two ends of this flat part 9.Central authorities' shank 10 inserts the central shank patchhole 5 of printed base plate 2, and outboard legs 11,12 is inserted respectively outboard legs patchhole 6,7.The magnetic component 13 of I type is configured on the position relative with magnetic component 8 to clamp the mode of printed base plate 2.
This magnetic component 8,13 can be the iron core that the powder solidification forming of for example iron (ferrite) class forms, and can be to be also mixed with the iron core that the ester moulding of Magnaglo forms.In addition, shape can be also the shape beyond EIR type.
Fig. 4 is the circuit diagram that represents the structure of the related light source ignition device 100 of present embodiment 1, for marking identical label with Fig. 1～Fig. 3 same section.
This light source ignition device 100 is ignition devices that the direct voltage for utilizing DC power supply 101 is lit a lamp to being used as the LED108 of vehicle mounted light source (headlamp, rear light, parking lamp etc.), mainly comprises DC/DC converter section 103, controls power supply unit 104, control part 105 and driver 106.DC power supply 101 is on-vehicle battery (direct voltage 12V or 24V), by mains switch 102, to DC/DC converter section 103, direct voltage is provided or cuts off direct voltage.
DC/DC converter section 103 comprises the transformer 1 of structure shown in Fig. 1～Fig. 3, the switch element Q1 being formed by MOS type field-effect transistor (FET), and rectifier diode D1, filtering capacitor C1, and for the shunt resistor R1 of current detecting.As shown in Figures 3 and 4, one end (the end P1b of winding P1) of a winding of transformer 1 is connected with the positive pole of DC power supply 101 via mains switch 102, and the other end (the end P2b of winding P2) of a winding is connected with the negative pole of DC power supply 101 via switch element Q1.In addition, one end (the end S2b of winding S2) of the secondary winding of transformer 1 is connected with the anode of rectifier diode D1, between the negative electrode of rectifier diode D1 and the other end of secondary winding (the end S1b of winding S1), is connected with filtering capacitor C1.And the centre tap X that winding is divided into winding P1, P2 is connected to and controls power supply unit 104 via diode D2.
In this DC/DC converter section 103, the control signal that utilization is inputted via driver 106 from control part 105, switch element Q1 is carried out to switch control, magnetic energy is stored in to transformer 1, and by discharging this magnetic energy, utilize rectifier diode D1 to carry out rectification to the voltage producing on transformer 1, utilize filtering capacitor C1 to carry out filtering, thereby generate direct voltage.
Control power supply unit 104 and receive via rectification diode D2 the voltage Vps that centre tap X place produces, utilize by capacitor C2, C3 resistor R2, voltage stabilizing didoe D3, and the constant voltage circuit of transistor Q2 formation, generate the constant voltage of 10V, and put on driver 106.
In addition, control power supply unit 104 and utilize constant voltage 10V constant voltage circuit being generated by the power supply unit 104a of serial electric power generating composition to be depressurized to 5V, after carrying out filtering by capacitor C4, put on the power input terminal of control part 105.
Under the 5V power supply that control part 105 generates at control power supply unit 104, carry out work.This control part 105 consists of not shown CPU and A/D converter etc., uses A/D converter, inputs respectively input voltage vin, the output voltage V out of DC/DC converter section 103 and the output current of the DC/DC converter section 103 that detected by shunt resistor R1.And control part 105, based on these input voltage vin, output voltage V out and output current, generates the control signal that makes switch element Q1 conducting or cut-off, thus DC/DC converter section 103 is operated, and provides lighting a lamp of regulation to use power to LED108.
Under the 10V power supply that driver 106 generates at control power supply unit 104, carry out work, based on the control signal from control part 105, the voltage of regulation is put on to the grid of switch element Q1.
For the DC/DC transducer transformer being used in the lower equipment of supply voltage as mobile unit, originally once the turn ratio of (mains side) winding is less, but by further improving on this basis the operating frequency of DC/DC transducer, and make magnetic component (iron core) relative with winding with the state approaching, can further reduce the number of turn.Thus, can realize following transformer or coil, on face of printed base plate and another face, form respectively a circle winding.
For this transformer or the coil that uses a circle winding on a face, the centre tap of winding is equivalent to be formed on the point on conductive foil for this circle winding on a face of printed base plate.In other words, in the such vehicle-mounted low-voltage equipment of light source ignition device 100, by the face of magnetic component 8,13 being configured to close to being formed on winding P1, P2 in top layer and the back layer of printed base plate 2 corresponding thereto, and improve the operating frequency of DC/DC converter section 103, can form thus by the winding P1 of a circle that reels on a face of printed base plate 2, the transformer 1 (or coil) that P2 forms, and can draw the lead-out wire as centre tap X from the centre of this circle winding P1 or P2.Thereby the voltage generating due to this circle winding P1 or P2 is enough, therefore can be as the centre tap X that generates the power of controlling power supply is provided.
Below, to have the control power supply unit 104 that 10V voltage is provided to driver 106, and the light source ignition device 100 of 30V voltage (output voltage V out is 30V) is provided to LED108 is example, and transformer 1 is described in detail.
As mentioned above, in this transformer 1, winding and secondary winding (insulation) independent of one another, wherein, the winding P1 of a winding is a circle, and winding P2 is also a circle, and the winding S1 of secondary winding is three circles, and winding S2 is also three circles.And, at the peripheral part of end P1a of the tie point that is equivalent to winding P1, P2, form centre tap X.
In addition, as mentioned above, preferably make that winding P1, P2 and magnetic component 8,13 are closer to each other obtains good characteristic, in illustrated example, winding P1 is disposed at and is approached on magnetic component 13 position corresponding thereto, by winding P2 be disposed at connect with the flat part 9 of magnetic component 8 and position corresponding thereto on.
In the transformer 1 of this number of turn, centre tap X place produce voltage for Vps following formula (1) represent.
Vps=Vin+Vout×｛p1/(s1+s2)｝ (1)
Herein, Vin is the supply voltage (being fixed as 12V) that offers transformer 1 from DC power supply 101 via mains switch 102, Vout is the output voltage (30V) being generated by DC/DC converter section 103, p1 is the number of turn (1 circle) of winding P1, and s1, s2 are the numbers of turn (being respectively three circles) of winding S1, S2.
For example, when supply voltage Vin is reduced to 7V, according to formula (1A), the voltage Vps that centre tap X place produces is 12V.Thus, even if supply voltage Vin is lower, also can provide the voltage of the 10V power supply of guaranteeing the control use that offers driver 106.In addition, when supply voltage Vin is constant 12V, voltage Vps is 17V.
Vps=7[V]+30[V]×｛1/(3+3)｝
=12[V] (1A)
Suppose do not using centre tap X, and derive and control with the situation of voltage from the drain terminal of switch element Q1, the voltage producing on this drain terminal for Vd following formula (2) represent.
Vd=Vin+Vout×｛(p1+p2)/(s1+s2)｝ (2)
Herein, p2 is the number of turn (circle) of winding P2.
For example, when supply voltage Vin is same as described above while being 7V, according to formula (2A), the voltage Vd producing on the drain terminal of switch element Q1 is 17V.Thus, can guarantee the 10V power supply of the control use that offers driver 106.
Vd=7[V]+30[V]×｛(1+1)/(3+3)｝
=17[V] (2A)
But when supply voltage Vin is constant voltage 12V formula, according to formula (2B), voltage Vd is 22V.Thus, the rectification diode D2 being connected with the drain terminal of switch element Q1, and the transistor Q2 of the control power supply unit 104 of output 10V voltage between produce the pressure drop of 12V, thereby cause the loss on diode D2 and transistor Q2 larger.In addition, also need transistor Q2 to take cooling measure.
Vd=12[V]+30[V]×｛(1+1)/(3+3)｝
=22[V] (2B)
If said structure is compared, in order to reduce loss, reduce the rated value of components and parts, preferably use centre tap X.
In addition,, for the DC/DC converter section 103 of this light source ignition device 100, except using transformer 1, can also use for example following such coil 1a.
Fig. 5 is the diagram of omitting printed base plate 2, can observe the exploded perspective view of the structure of winding in coil 1a, except coil 1a, also shows the circuit structure of printed base plate 2.Fig. 6 is circuit diagram in the situation that of forming booster power with coil 1a in DC/DC converter section 103a, light source ignition device 100.
In the coil 1a of chip, top layer at not shown printed base plate 2 is wound into helical form by two circle conductive foils, layer is also wound into helical form by two circle conductive foils overleaf, the medial end P2a-1 of the spiral of each layer, and P2a-2 connects by the through hole 3 that runs through printed base plate 2 and form.Then, using a circle of the periphery in two circles on top layer as winding P1, using two circles of a circle in the interior week on top layer and back layer as winding P2.
And by the tie point between a circle of the periphery in two circles on top layer and a circle in interior week, the conductive foil that is equivalent to the tie point of winding P1, P2 is drawn, thereby form centre tap X.This centre tap X is positioned at the top layer of the printed base plate identical with winding P1 2.
In addition, when on top layer, be formed with more than three circles helical form conductive foil time, from one of a circle of the most peripheral lead-out wire of naming a person for a particular job, draw, set it as centre tap X.
An end P1b of one group of winding is connected with the positive pole of DC power supply 101 via mains switch 102, and another end P2b is connected with the negative pole of DC power supply 101 via switch element Q1.In addition, this end P2b is connected with the anode of rectifier diode D1, between the negative electrode of rectifier diode D1 and the negative pole of DC power supply 101, is connected with filtering capacitor C1.And the centre tap X that coil 1a is divided into winding P1, P2 is connected to and controls power supply unit 104 via diode D2.
In this coil 1a, centre tap X place produce voltage for Vps following formula (3) represent.So for example, when supply voltage Vin is reduced to 6V, according to formula (3A), the voltage Vps that centre tap X place produces is 12V.Thus, even if supply voltage Vin is lower, also can guarantee the 10V power supply of the control use that offers driver 106.
Vps=Vin+(Vout-Vin)×｛p1/(p1+p2)｝ (3)
Vps=6[V]+(30-6)[V]×｛1/(1+3)｝
=12[V] (3A)
As mentioned above, can using the periphery of the winding being formed by the helical form conductive foil being formed on a face of printed base plate 2 a bit as centre tap X, and be connected with lead-out wire, to controlling power supply unit 104, derive voltage thus, and generate and control power supply.
As mentioned above, according to execution mode 1, to LED108, provide the light source ignition device 100 of lighting a lamp with power to comprise: DC/DC converter section 103,103a, this DC/DC converter section 103,103a are used the transformer 1 or the coil 1a that winding P1, P2, S1, S2 and magnetic component 8,13, consist of, and generate and light a lamp with power according to DC power supply 101, wherein, winding P1, P2, S1, S2 are formed by spiral helicine conductive foil; Lead-out wire, draws this lead-out wire from the face identical with the end P1b of the terminal that is equivalent to transformer 1 or coil 1a of winding P1, using as centre tap X; Control circuit portion 107, this control circuit portion 107 controls DC/DC converter section 103,103a; And control power supply unit 104, this control power supply unit 104 is from the supply of centre tap X received power, and provides control power supply to control circuit portion 107.And, be configured to the operating frequency by improving DC/DC converter section 103,103a, and make winding P1, P2 closer to each other and relative with magnetic component 8,13, reduce thus the number of turn of winding P1, P2, and improve the voltage that each circle of winding produces.Therefore, because the one point union that can draw winding P1 (or P2) is used as centre tap, thereby can form loss less (high efficiency), small-sized control power supply.Consequently, even if can realize, in the situation that the supply voltages such as on-vehicle battery are lower, also can keep lighting a lamp the light source ignition device 100 of action.
In addition, the coil 1a that is provided with centre tap X during for DC/DC converter section 103a, owing to there is no the secondary winding of transformer, therefore, can be used to the printed base plate 2 on surface and this two sides, the back side.Thus can the simple light source ignition device 100 of implementation structure.
In addition,, according to execution mode 1, control power supply unit 104 is configured to receive draws the voltage producing on the winding P1 (or P2) of centre tap X, exports thus the voltage higher than the voltage of DC power supply 101.Thus, even for example in the situation that DC power supply 101 is reduced to 7V from constant voltage 12V, by importing the voltage of centre tap X, controls power supply unit 104 and also can export the 10V voltage higher than 7V.Even if can realize thus, in the situation that supply voltage is lower, also can keep lighting a lamp the light source ignition device 100 of action.
In addition, according to execution mode 1, because winding P1, P2, S1, S2 are configured to, the conductive foil of a part of the printed base plate 2 that electronic devices and components are installed is formed as to helical form, therefore, can prepares separately winding and magnetic component that transformer 1 or coil 1a are used.The increase as the transformer 1 of components and parts or the assembly expenses of coil 1a can be reduced thus, thereby cheap light source ignition device 100 can be realized.
In addition, according to execution mode 1, form as shown in Figure 4 the DC/DC converter section 103 using winding P1, a P2 and secondary winding S1, S2 transformer 1 insulated from each other, but be not limited to this, also can form DC/DC converter section 103b with the autotransformer 1b that once winding P1, P2 are connected with secondary winding S1, S2.
Fig. 7 is the variation of the related light source ignition device 100 of execution mode 1, shows the circuit diagram in the situation that using autotransformer 1b.In this example, the end of a winding P2 of autotransformer 1b is connected with the end of secondary winding S1, and this tie point is connected with the negative electrode of DC power supply 101 via switch element Q1.
In the DC/DC converter section 103 shown in Fig. 4, because winding P1, a P2 and secondary winding S1, the S2 of transformer 1 are insulated from each other, therefore, can alleviate the impact of the member of the accidents such as short circuit on primary side occurring because of secondary side.
Along band, mention, using in the DC/DC converter section 103 of the autotransformer 1b shown in Fig. 7, cannot utilize the electric current flowing through when the control of this DC/DC converter section 103b is cut off to the lead-out terminal short circuit of LED108.In contrast to this, if the transformer 1 shown in use Fig. 4, when lead-out terminal short circuit, can not export and be more than or equal to the magnetic energy being stored in magnetic component 8,13, that is to say, on the switch element Q1 of primary side, be only applied with the power suitable with stored magnetic energy, therefore, when lead-out terminal short circuit, also can not force to apply extra burden.
On the other hand, in the DC/DC converter section 103b shown in Fig. 7, can make the output voltage V out of supply voltage Vin and autotransformer 1b superimposed, therefore can improve the efficiency of DC/DC converter section 103b.
Along band, mention, in the transformer 1 of the such insulated type of Fig. 4, by the disposable all output voltage V out magnetic energy that is converted into, and in autotransformer 1b, just enough owing to supplementing power corresponding to the difference of output voltage V out and supply voltage Vin with magnetic energy, therefore the burden of the switch element Q1 of primary side is less, and switching loss is also less.In addition, can use small-sized magnetic component (iron core) 8,13.
Quote Fig. 1～Fig. 7 below, present embodiment 2 is described.
In the illustrated transformer 1 of above-mentioned execution mode 1, the magnetic component (iron core) 8,13 preferably using is configured in and approaches very much the position of helical form conductive foil and corresponding thereto, in the case of using the magnetic component 8,13 of ferrite class, if the planar portions of flat part 9 and the magnetic component 13 of magnetic component 8 being installed in the mode connecting with winding P1, P2, can obtain good characteristic.
But, as long as used the ferrite class magnetic component 8,13 of rigidity, for the breakage that prevents from causing because of the deviation of components and parts, or in order to improve assembleability, multiple gaps just need to be set as shown in Fig. 2.Thus, magnetic component (iron core) can only connect with winding P1, the P2 of a certain side in the surface of printed base plate 2 and the back side, thereby cannot eliminate the gap between magnetic component and printed base plate 2 completely.
Here, in present embodiment 2, for the magnetic component that makes to be equivalent to magnetic component 8,13 in an identical manner with the surface of printed base plate 2 and winding P1, the P2 at the back side in some connecting, substitute magnetic component 8,13 with the resin that is mixed with Magnaglo, and form magnetic component 22 by carry out founding (embed and be shaped) printed base plate 2 with the magnetic material of this resinae.Thus, the planar portions fluid-tight engagement of winding P1 and magnetic component 13, flat part 24,25 fluid-tight engagement of winding P2 and magnetic component 22.
But, less in order to make to run through the sectional area of central shank 21 of central magnetic component 22 of helical form winding P1, P2, S1, S2 of flux concentrating, need to use the magnetic material that magnetic resistance is less, but the magnetic permeability of Magnaglo hybrid resin is lower, be difficult to reduce its magnetic resistance when the central shank 21 of assurance has small diameter.Thus, in magnetic component 22, central shank 21 is formed by magnetic materials such as the higher ferrites of magnetic permeability, and remaining position is formed by Magnaglo hybrid resin.
In addition, in order to utilize, embedding is shaped forms as one outboard legs 23 and magnetic component 22, offers in advance outboard legs patchhole 6,7 on the printed base plate 2 before founding.The Magnaglo hybrid resin of sneaking in this outboard legs patchhole 6,7 thus, becomes outboard legs 23.
Concrete example is shown in Figure 8.Fig. 8 (a) is the vertical view of magnetic component, and Fig. 8 (b) is the cutaway view cutting off along BB line.
In the transformer 1c of this chip, on printed base plate 2, be formed with the central shank patchhole 5c of the central shank that runs through magnetic component (iron core), and run through multiple outboard legs patchhole 6c of multiple outboard legs.In addition, in the top layer of printed base plate 2 and back layer, spirally form winding P1, P2, in two-layer intermediate layer, spirally form respectively winding S1, S2.
The magnetic component (iron core) 21 of the cylindrical shapes such as ferrite runs through the middle leg portion patchhole 5c of the printed base plate 2 that is arranged at metal pattern.In addition,, in the mode that printed base plate 2 is clipped in the middle, by cast Magnaglo hybrid resin, the magnetic component 22 that is equivalent to magnetic component 8,13 (except middle leg portion 10) is embedded to shaping.Now, owing to offering in advance multiple outboard legs patchhole 6c on printed base plate 2, the Magnaglo hybrid resin therefore injecting in this outboard legs patchhole 6c becomes outboard legs 23.Thus, flat part 24,25 fluid-tight engagement of winding P1, P2 and magnetic component 22.
In addition, because the circumferential length of this flat part 24,25 is along with the expansion Er Cong center of radial direction starts to expand laterally, therefore, for fear of the unnecessary expansion of flux paths, along with the expansion (expansion of circumferential length) of radial direction, correspondingly make the thickness of magnetic component 22 reduce, thereby make the product (sectional area) of circumferential length and thickness keep equating, and location-independent with radial direction.
And, as variation, adopt following structure, that is: make the central shank 21 being formed by magnetic components such as ferrites run through the magnetic component 22 of resinae, with respect to the position of magnetic component 22 (for example can at random change thus this central authorities' shank 21, can extract the structure of insertion, rotation), thus the inductance as transformer or coil can be adjusted.For example, as shown in Figure 9 central shank 21 is made as to external screw thread shape, in the hole of the central portion of magnetic component 22, form the groove of internal screw thread form, by central shank 21 being screwed in, extracted in the hole of inserting magnetic component 22, adjust insertion, thereby adjust magnetic resistance.Thus, even if the magnetic characteristic generation deviation of the central shank 21 of the magnetic component 22 of Magnaglo hybrid resin or ferrite etc. also can be eliminated deviation by adjustment, thereby make the property preservation of transformer or coil constant.
As mentioned above, according to execution mode 2, in light source ignition device 100, owing to having used the resin that is mixed with Magnaglo in magnetic component 22, therefore can make the butt between helical form conductive foil and the magnetic component 22 of printed base plate 2 become easily, thereby can realize the transformer 1c with superperformance.In addition,, by adopting the structure that can adjust inductance, can realize the transformer 1c of stable performance.And then, can realize the DC/DC converter section 103 with superperformance and stability, further can realize the light source ignition device 100 with superperformance and stability.
This structure is not limited to transformer 1c, also identical in autotransformer 1b and coil 1a.
In addition, in above-mentioned execution mode 1,2, on the face of printed base plate or layer, conductive foil is formed as to helical form, thereby form transformer or the coil of chip, but also can not use printed base plate, and by the plate shaped helical form that becomes of conductivity, thereby transformer or the coil of formation chip.
In addition, in above-mentioned execution mode 1,2, enumerate and will use the DC/DC converter section that is provided with tapped chip transformer or coil to be applied to the example in the light source ignition device that LED is lit a lamp, but be not limited to this, the light source ignition device that also can be applied to discharge lamp to light a lamp.Even for the light source ignition device of discharge lamp, identical with the situation of LED, also can realize the light source ignition device of simple structure.
In addition,, in above-mentioned execution mode 1,2, show the example of the inverse-excitation type DC/DC transducer that is applied to the ignition device that LED or discharge lamp are lit a lamp, but also can will be provided with tapped chip transformer or coil for positive activation type DC/DC transducer.In this case, also can be according to the above-mentioned illustrated power of drawing from centre tap that uses like that.
In addition, the present patent application can be carried out the independent assortment of each execution mode in its invention scope, or the arbitrary structures key element of each execution mode is out of shape, or omits arbitrary structures key element in each execution mode.
Industrial practicality
As mentioned above, light source ignition device involved in the present invention is by drawing the helical form conductive foil on the face identical with the terminal of chip transformer or coil, and set it as centre tap, the control power supply of action can guarantee to light a lamp normally in the situation that supply voltage is lower, therefore, be applicable to vehicle mounted light source ignition device take on-vehicle battery as power supply etc.
Label declaration
1,1c transformer, 1a coil, 1b autotransformer, 2 printed base plates, 3,4 through holes, 5,4c central authorities shank patchhole, 6,6c, 7 outboard legs patchholes, 8,13,22 magnetic components, 9,24,25 flat parts, 10,21 central shanks, 11,12,23 outboard legs, 100 light source ignition devices, 101 DC power supply, 102 mains switches, 103,103a, 103b DC/DC converter section, 104 is controlled power supply unit, 104a power supply unit, 105 control parts, 106 drivers, 107 control circuit portions, 108LED.
Claims (8)
1. a light source ignition device, for the power of the use of lighting a lamp is provided to the light source of on-vehicle lamp, is characterized in that, comprising:
DC/DC converter section, this DC/DC converter section is used the transformer or the coil that winding and magnetic component, consist of, the power of the use of lighting a lamp described in generating from power supply, wherein, this winding is formed by spiral helicine conductive member;
Control circuit portion, this control circuit portion controls described DC/DC converter section; And
Control power supply unit, this control power supply unit provides the power supply of controlling use to described control circuit portion,
The power that offers described control power supply unit is provided by the centre tap (lead-out wire) of drawing from the face identical with the terminal of winding that forms described transformer or described coil.
2. light source ignition device as claimed in claim 1, is characterized in that,
Described control power supply unit receives the upper voltage producing of centre tap (lead-out wire) of described winding, and the output voltage higher than the voltage of described power supply.
3. light source ignition device as claimed in claim 1, is characterized in that,
Described winding is formed as helical form by the conductive foil of a part of printed base plate that electronic devices and components are installed and obtains.
4. light source ignition device as claimed in claim 1, is characterized in that,
In described magnetic component, use the resin that is mixed with Magnaglo.
5. light source ignition device as claimed in claim 1, is characterized in that,
Described DC/DC converter section is used winding and secondary winding transformer insulated from each other.
6. light source ignition device as claimed in claim 1, is characterized in that,
Described DC/DC converter section is used an autotransformer that end is connected with secondary winding by end of a winding.
7. light source ignition device as claimed in claim 1, is characterized in that,
Described DC/DC converter section is used the coil that is provided with centre tap (lead-out wire).
8. light source ignition device as claimed in claim 1, is characterized in that,
Described light source is discharge lamp or LED.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2011/005456 WO2013046259A1 (en) | 2011-09-28 | 2011-09-28 | Light source lighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103748776A true CN103748776A (en) | 2014-04-23 |
| CN103748776B CN103748776B (en) | 2016-08-17 |
Family
ID=47994387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180072873.8A Active CN103748776B (en) | 2011-09-28 | 2011-09-28 | Light source ignition device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5788012B2 (en) |
| CN (1) | CN103748776B (en) |
| DE (1) | DE112011105682T5 (en) |
| WO (1) | WO2013046259A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104112576A (en) * | 2014-06-25 | 2014-10-22 | 东莞联宝光电科技有限公司 | Ultra-thin transformer |
| TWI636645B (en) * | 2017-09-19 | 2018-09-21 | 群光電能科技股份有限公司 | Power converter module |
| CN109215974A (en) * | 2017-07-04 | 2019-01-15 | 英飞凌科技奥地利有限公司 | Winding module, bridge transformer, module and the circuit for the conversion of DC-DC power |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9407156B2 (en) | 2013-05-10 | 2016-08-02 | Bose Corporation | Managing leakage inductance in a power supply |
| WO2015121113A1 (en) * | 2014-02-14 | 2015-08-20 | Koninklijke Philips N.V. | Transformer for providing feeding and data signals |
| US9595872B2 (en) | 2014-10-22 | 2017-03-14 | Bose Corporation | Adjustment of circuit operations in response to AC line distortion |
| JP6376345B2 (en) * | 2014-12-24 | 2018-08-22 | 東芝ライテック株式会社 | Power supply |
| JP6624160B2 (en) * | 2017-05-23 | 2019-12-25 | オムロン株式会社 | Transformer integrated printed circuit board |
| WO2021111566A1 (en) * | 2019-12-04 | 2021-06-10 | 三菱電機株式会社 | Switching power supply device |
| WO2022064662A1 (en) * | 2020-09-25 | 2022-03-31 | 住友電気工業株式会社 | Transformer and converter |
| DE102021209402A1 (en) * | 2021-08-26 | 2023-03-02 | Magna powertrain gmbh & co kg | planar transformer |
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| JPH10149929A (en) * | 1996-11-15 | 1998-06-02 | Yokogawa Electric Corp | Printed-coil transformer |
| JP2002233152A (en) * | 2001-01-31 | 2002-08-16 | Matsushita Electric Works Ltd | Power supply and gas-discharge-lamp lighting device |
| JP2005101406A (en) * | 2003-09-26 | 2005-04-14 | Jfe Steel Kk | Magnetic element and switching power supply mounted with same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3753928B2 (en) * | 2000-06-14 | 2006-03-08 | オリジン電気株式会社 | Printed circuit board and power supply using the same |
-
2011
- 2011-09-28 DE DE112011105682.6T patent/DE112011105682T5/en not_active Withdrawn
- 2011-09-28 JP JP2013535629A patent/JP5788012B2/en active Active
- 2011-09-28 CN CN201180072873.8A patent/CN103748776B/en active Active
- 2011-09-28 WO PCT/JP2011/005456 patent/WO2013046259A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10149929A (en) * | 1996-11-15 | 1998-06-02 | Yokogawa Electric Corp | Printed-coil transformer |
| JP2002233152A (en) * | 2001-01-31 | 2002-08-16 | Matsushita Electric Works Ltd | Power supply and gas-discharge-lamp lighting device |
| JP2005101406A (en) * | 2003-09-26 | 2005-04-14 | Jfe Steel Kk | Magnetic element and switching power supply mounted with same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104112576A (en) * | 2014-06-25 | 2014-10-22 | 东莞联宝光电科技有限公司 | Ultra-thin transformer |
| CN109215974A (en) * | 2017-07-04 | 2019-01-15 | 英飞凌科技奥地利有限公司 | Winding module, bridge transformer, module and the circuit for the conversion of DC-DC power |
| CN109215974B (en) * | 2017-07-04 | 2023-07-28 | 英飞凌科技奥地利有限公司 | Winding module, hybrid transformer, module and circuit for DC-DC power conversion |
| TWI636645B (en) * | 2017-09-19 | 2018-09-21 | 群光電能科技股份有限公司 | Power converter module |
| US10355608B2 (en) | 2017-09-19 | 2019-07-16 | Chicony Power Technology Co., Ltd. | Power converter module |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013046259A1 (en) | 2013-04-04 |
| DE112011105682T5 (en) | 2014-07-17 |
| JPWO2013046259A1 (en) | 2015-03-26 |
| CN103748776B (en) | 2016-08-17 |
| JP5788012B2 (en) | 2015-09-30 |
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