CN107395036A - A kind of single-stage AC DC voltage-stablizers for wireless charging - Google Patents
A kind of single-stage AC DC voltage-stablizers for wireless charging Download PDFInfo
- Publication number
- CN107395036A CN107395036A CN201710796227.5A CN201710796227A CN107395036A CN 107395036 A CN107395036 A CN 107395036A CN 201710796227 A CN201710796227 A CN 201710796227A CN 107395036 A CN107395036 A CN 107395036A
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- fet
- voltage
- electric capacity
- output end
- comparator
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- 101100464782 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) CMP2 gene Proteins 0.000 claims abstract description 12
- 101100464779 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) CNA1 gene Proteins 0.000 claims abstract description 10
- 230000005611 electricity Effects 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 5
- 230000005669 field effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- H02J7/022—
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- H02J7/025—
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention discloses a kind of single-stage AC DC voltage-stablizers for wireless charging, including inductance L, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, resistance R, FET (M1, M2, M3, M4), comparator (CMP1, CMP2, CMP3), error amplifier EA, voltage sense circuit, digitial controller, start-up circuit and triangular-wave generator.The conventional full bridge rectifier being made up of four diodes is substituted in the AC DC voltage-stablizers using four FETs, and combined with control circuit, both can be operated under charge mode, it can be operated in again under zero die worker's operation mode, under zero die worker's operation mode, load is no longer electrically charged, one freewheeling path is formed in receiving terminal, a high equiva lent impedance can be reflected to limit the electric current of transmitting terminal, power attenuation under zero mould substantially reduces, the voltage-stablizer saves traditional communication module and the DC DC converters of two level, and efficiency is substantially improved.
Description
Technical field
The present invention relates to wireless charging technical field, more particularly to a kind of single-stage AC-DC voltage stabilizing for wireless charging
Device.
Background technology
Recently, the wireless charging market demand is rapidly increasing.Because most of wireless charging standard (such as QI) needs to fill
Electrical equipment provides a steady dc voltage, therefore the voltage stabilizing of output voltage becomes the most important function of wireless charging system.
The adjustment of voltage can obtain in transmitting terminal or receiving terminal.For the former, system needs to increase a data communication module, this
Also increase the complexity of system design.For the latter, traditional scheme needs the adjuster of a two-stage, including rectification circuit
And reduction voltage circuit.Reduction voltage circuit can be linear voltage regulator, and this can cause the efficiency in the case of High Pressure Difference very low；Can also be
Dc-dc, it is difficult to be integrated into chip internal that this, which brings inductance component,.At present, a kind of resonance regulation rectifier (3R) solution
Some certainly above-mentioned problems, but the passive rectifier in the system has dragged down the efficiency of system.
The content of the invention
The embodiment of the present invention provides a kind of single-stage AC-DC voltage-stablizer for wireless charging, using four power field effects
Pipe and control circuit, make four FETs to be both operated under charge mode, can work again by integral cycle algorithm
In zero mould, the dc-dc of traditional communication module and two level is saved, efficiency is substantially improved.
A kind of single-stage AC-DC voltage-stablizer for wireless charging, including inductance L, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity
C4, resistance R, FET M1, FET M2, FET M3, FET M4, comparator CMP1, comparator CMP2, ratio
Compared with device CMP3, error amplifier EA, voltage sense circuit, digitial controller, start-up circuit and triangular-wave generator, inductance L with
It is connected to after electric capacity C4 series connection between the FET M1 drain electrode of source electrode and FET M2, FET M1 drain electrode and field
Effect pipe M2 source electrode is connected to adjustment voltage Verg, and FET M1 source electrode is connected to FET M3 source electrode, field
Effect pipe M2 drain electrode is connected to FET M4 drain electrode, and FET M3 drain electrode and FET M4 source electrode connect
Ground, electric capacity C1 one end are connected to adjustment voltage Verg, other end ground connection, and comparator CMP1 in-phase input end is connected to field effect
Should pipe M3 source electrode, reverse inter-input-ing ending grounding, output end be connected to FET M3 grid, comparator CMP2 homophase input
End is connected to FET M4 drain electrode, reverse inter-input-ing ending grounding, output end are connected to FET M4 grid, voltage induced
The input of circuit is connected to adjustment voltage Verg, and a feedback output end of voltage sense circuit is connected to start-up circuit, another
One feedback output end is connected to error amplifier EA inverting input, and another input of start-up circuit is connected to threshold value
Voltage Vtn, error amplifier EA in-phase input end are connected to reference voltage V ref, and error amplifier EA output end is connected to
Comparator CMP3 inverting input, comparator CMP3 in-phase input end are connected to triangular-wave generator, electric capacity C2 one end
It is connected to error amplifier EA inverting input, the other end is connected to error amplifier EA output end, electric capacity C3 and resistance R
In parallel with electric capacity C2 after series connection, the output end of start-up circuit and comparator CMP3 output end are connected to the defeated of digitial controller
Go out end, four output ends of digitial controller are respectively connecting to FET M1 grid, FET M2 grid, comparator
CMP1 and comparator CMP2.
Preferably, FET M1 and FET M2 is P-channel MOSFET, FET M3 and FET M4 equal
For N-channel MOS FET.
Substituted in the single-stage AC-DC voltage-stablizer for wireless charging of the present invention using four FETs by four two poles
The conventional full bridge rectifier of pipe composition, and combined with control circuit, it can both be operated under charge mode, zero can be operated in again
Under die worker's operation mode, under zero die worker's operation mode, load is no longer electrically charged, and a freewheeling path is formed in receiving terminal, can be anti-
A high equiva lent impedance is penetrated to limit the electric current of transmitting terminal, the power attenuation under zero mould substantially reduces, and the voltage-stablizer saves biography
The communication module of system and the dc-dc of two level, efficiency are substantially improved.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the circuit theory diagrams of the single-stage AC-DC voltage-stablizer provided in an embodiment of the present invention for wireless charging；
Fig. 2 is the single-stage AC-DC voltage-stablizer provided in an embodiment of the present invention for wireless charging under charge mode
Principle schematic；
Fig. 3 is the single-stage AC-DC voltage-stablizer provided in an embodiment of the present invention for wireless charging under zero die worker's operation mode
Principle schematic.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
As shown in figure 1, a kind of single-stage AC-DC voltage-stablizer for wireless charging, including inductance L, electric capacity C1, electric capacity C2,
Electric capacity C3, electric capacity C4, resistance R, FET M1, FET M2, FET M3, FET M4, comparator CMP1, ratio
Occur compared with device CMP2, comparator CMP3, error amplifier EA, voltage sense circuit, digitial controller, start-up circuit and triangular wave
Device, inductance L are connected to after being connected with electric capacity C4 between the FET M1 drain electrode of source electrode and FET M2, FET M1
Drain electrode and FET M2 source electrode be connected to adjustment voltage Verg, FET M1 source electrode is connected to FET M3
Source electrode, FET M2 drain electrode is connected to FET M4 drain electrode, and FET M3 drain electrode is with FET M4's
Source grounding, electric capacity C1 one end are connected to adjustment voltage Verg, other end ground connection, and comparator CMP1 in-phase input end connects
The source electrode, reverse inter-input-ing ending grounding, output end for being connected to FET M3 are connected to FET M3 grid, comparator CMP2's
In-phase input end is connected to FET M4 drain electrode, reverse inter-input-ing ending grounding, output end are connected to FET M4 grid,
The input of voltage sense circuit is connected to adjustment voltage Verg, and a feedback output end of voltage sense circuit is connected to startup
Circuit, another feedback output end are connected to error amplifier EA inverting input, and another input of start-up circuit connects
Threshold voltage vt n is connected to, error amplifier EA in-phase input end is connected to reference voltage V ref, error amplifier EA output
End is connected to comparator CMP3 inverting input, and comparator CMP3 in-phase input end is connected to triangular-wave generator, electric capacity
C2 one end is connected to error amplifier EA inverting input, the other end is connected to error amplifier EA output end, electric capacity
C3 is in parallel with electric capacity C2 after being connected with resistance R, and the output end of start-up circuit and comparator CMP3 output end are connected to numeral
The output end of controller, four output ends of digitial controller are respectively connecting to FET M1 grid, FET M2
Grid, comparator CMP1 and comparator CMP2, wherein, above-mentioned FET M1 and FET M2 are P-channel MOSFET,
FET M3 and FET M4 is N-channel MOS FET.
When feedback voltage Vfb 2 is less than reference voltage V ref, charge mode is activated.Now system is equivalent to one
The rectifier of individual interconnection.As shown in Fig. 2 system is operated in positive half period：When VHL be equal to 0, four power field effect pipes
(M1, M, M3, M4) Close All.Then when alternating voltage VHL is gradually increasing, VL declines, until | Vreg-VL | more than field-effect
Pipe M2 cut-in voltage, FET M2 conductings, VH are equal to Vreg.VL is further pulled low, until dropping below system
After GND, comparator CMP2 can open FET M3, and now charging current can flow through FET M2 and FET
M3.Begun to decline after VHL reaches peak, now VL is begun to ramp up, and when VL is increased beyond GND, comparator CMP2 can be closed
Close FET M3.When VL continues to rise, as | Vreg-VL | during cut-in voltage less than FET M2, FET M1 will
It can close.System is operated in the process of negative half-cycle and similar to the above, repeats no more.When feedback voltage Vfb 2 is higher than reference voltage
When Vref, the mode of operation of zero mould will be activated, and now FET M1 and FET M2 will be closed, FET
M3 and FET M4 is switched on and forms an afterflow loop.As shown in figure 3, now receiving terminal is in short-circuit condition, Vreg is big
Width declines.Theoretical according to reflective loads, due to the very big reflected umpedance of the receiving terminal after short circuit, the electric current of transmitting terminal almost may be used
To ignore.The transmitting terminal electric current of very little can only produce the induced voltage of a very little in receiving terminal, thus limit output current and
The power attenuation of zero mould state.Now under zero mould state, load current will be provided by output capacitance C1.
To sum up, this is used in the single-stage AC-DC voltage-stablizer of wireless charging substitute by four two poles using four FETs
The conventional full bridge rectifier of pipe composition, and combined with control circuit, it can both be operated under charge mode, zero can be operated in again
Under die worker's operation mode, under zero die worker's operation mode, load is no longer electrically charged, and a freewheeling path is formed in receiving terminal, can be anti-
A high equiva lent impedance is penetrated to limit the electric current of transmitting terminal, the power attenuation under zero mould substantially reduces, and the voltage-stablizer saves biography
The communication module of system and the dc-dc of two level, efficiency are substantially improved.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (2)
1. a kind of single-stage AC-DC voltage-stablizer for wireless charging, it is characterised in that including inductance L, electric capacity C1, electric capacity C2, electricity
Hold C3, electric capacity C4, resistance R, FET M1, FET M2, FET M3, FET M4, comparator CMP1, compare
Device CMP2, comparator CMP3, error amplifier EA, voltage sense circuit, digitial controller, start-up circuit and triangular wave occur
Device, inductance L are connected to after being connected with electric capacity C4 between the FET M1 drain electrode of source electrode and FET M2, FET M1
Drain electrode and FET M2 source electrode be connected to adjustment voltage Verg, FET M1 source electrode is connected to FET M3
Source electrode, FET M2 drain electrode is connected to FET M4 drain electrode, and FET M3 drain electrode is with FET M4's
Source grounding, electric capacity C1 one end are connected to adjustment voltage Verg, other end ground connection, and comparator CMP1 in-phase input end connects
The source electrode, reverse inter-input-ing ending grounding, output end for being connected to FET M3 are connected to FET M3 grid, comparator CMP2's
In-phase input end is connected to FET M4 drain electrode, reverse inter-input-ing ending grounding, output end are connected to FET M4 grid,
The input of voltage sense circuit is connected to adjustment voltage Verg, and a feedback output end of voltage sense circuit is connected to startup
Circuit, another feedback output end are connected to error amplifier EA inverting input, and another input of start-up circuit connects
Threshold voltage vt n is connected to, error amplifier EA in-phase input end is connected to reference voltage V ref, error amplifier EA output
End is connected to comparator CMP3 inverting input, and comparator CMP3 in-phase input end is connected to triangular-wave generator, electric capacity
C2 one end is connected to error amplifier EA inverting input, the other end is connected to error amplifier EA output end, electric capacity
C3 is in parallel with electric capacity C2 after being connected with resistance R, and the output end of start-up circuit and comparator CMP3 output end are connected to numeral
The output end of controller, four output ends of digitial controller are respectively connecting to FET M1 grid, FET M2
Grid, comparator CMP1 and comparator CMP2.
A kind of 2. single-stage AC-DC voltage-stablizer for wireless charging as claimed in claim 1, it is characterised in that FET
M1 and FET M2 is that P-channel MOSFET, FET M3 and FET M4 are N-channel MOS FET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710796227.5A CN107395036B (en) | 2017-09-06 | 2017-09-06 | A kind of single-stage AC-DC voltage-stablizer for wireless charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710796227.5A CN107395036B (en) | 2017-09-06 | 2017-09-06 | A kind of single-stage AC-DC voltage-stablizer for wireless charging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107395036A true CN107395036A (en) | 2017-11-24 |
| CN107395036B CN107395036B (en) | 2019-08-13 |
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| CN201710796227.5A Active CN107395036B (en) | 2017-09-06 | 2017-09-06 | A kind of single-stage AC-DC voltage-stablizer for wireless charging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639164A (en) * | 2019-01-31 | 2019-04-16 | 甘肃南洋新能源科技发展有限公司 | A kind of rectifier of the adjustable output voltage for wireless power transmission |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471286A (en) * | 2015-12-10 | 2016-04-06 | 无锡华润矽科微电子有限公司 | Synchronous rectification circuit, wireless charging system and synchronous rectification method |
| US20160372957A1 (en) * | 2015-04-10 | 2016-12-22 | Enovate Medical, Llc | Contactless battery system utilizing a bidirectional power converter |
| CN106716774A (en) * | 2014-09-26 | 2017-05-24 | 三星电子株式会社 | Wireless power transmitter and wireless power receiver |
-
2017
- 2017-09-06 CN CN201710796227.5A patent/CN107395036B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106716774A (en) * | 2014-09-26 | 2017-05-24 | 三星电子株式会社 | Wireless power transmitter and wireless power receiver |
| US20160372957A1 (en) * | 2015-04-10 | 2016-12-22 | Enovate Medical, Llc | Contactless battery system utilizing a bidirectional power converter |
| CN105471286A (en) * | 2015-12-10 | 2016-04-06 | 无锡华润矽科微电子有限公司 | Synchronous rectification circuit, wireless charging system and synchronous rectification method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639164A (en) * | 2019-01-31 | 2019-04-16 | 甘肃南洋新能源科技发展有限公司 | A kind of rectifier of the adjustable output voltage for wireless power transmission |
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| Publication number | Publication date |
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| CN107395036B (en) | 2019-08-13 |
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