CN109600057A - A kind of single output circuit framework of doube bridge input - Google Patents
A kind of single output circuit framework of doube bridge input Download PDFInfo
- Publication number
- CN109600057A CN109600057A CN201910088316.3A CN201910088316A CN109600057A CN 109600057 A CN109600057 A CN 109600057A CN 201910088316 A CN201910088316 A CN 201910088316A CN 109600057 A CN109600057 A CN 109600057A
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- Prior art keywords
- synchronous rectifier
- effect transistor
- field effect
- bridge
- bridge synchronous
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 76
- 230000005669 field effect Effects 0.000 claims description 64
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
-
- 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
- H02M1/0083—Converters characterised by their input or output configuration
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
本发明公开了一种双桥输入单输出电路架构，包括控制电路板，控制电路板上安装有全桥同步整流器、半桥同步整流器和切换器，全桥同步整流器输入端连接WPC线圈，半桥同步整流器输入端连接A4WP线圈，全桥同步整流器、半桥同步整流器输出端分别连接切换器输入端，切换器输出端连接线性稳压器输入端，线性稳压器输出电压，线性稳压器连接控制逻辑电路，本发明结构原理简单，能够同时连接两个整流器，可自动判别哪一路输入有供电，避免单一路导通电流倒灌。
The invention discloses a double-bridge input single-output circuit structure, comprising a control circuit board, a full-bridge synchronous rectifier, a half-bridge synchronous rectifier and a switch are mounted on the control circuit board, the input end of the full-bridge synchronous rectifier is connected to a WPC coil, and the half-bridge The input terminal of the synchronous rectifier is connected to the A4WP coil, the output terminals of the full-bridge synchronous rectifier and the half-bridge synchronous rectifier are respectively connected to the input terminal of the switcher, the output terminal of the switcher is connected to the input terminal of the linear regulator, the output terminal of the linear regulator is connected to the linear regulator. The control logic circuit has a simple structure and principle, can connect two rectifiers at the same time, can automatically determine which channel of input has power supply, and avoid single-channel conduction current inflow.
Description
Technical field
The present invention relates to wireless charging technical field, specially a kind of doube bridge inputs single output circuit framework.
Background technique
Existing circuit only has single rectifier, and only single-pathway is powered, and causes working efficiency low, therefore, having must
It improves.
Summary of the invention
The purpose of the present invention is to provide a kind of doube bridges to input single output circuit framework, to solve to mention in above-mentioned background technique
Out the problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of doube bridge inputs single output circuit framework, packet
Control circuit board is included, full-bridge synchronous rectifier, half-bridge synchronous rectifier and switch are installed in the control circuit board, it is described
Full-bridge synchronous rectifier input terminal connects WPC coil, and the half-bridge synchronous rectifier input terminal connects A4WP coil, the full-bridge
Synchronous rectifier, half-bridge synchronous rectifier output end are separately connected switch input terminal, and the switch output end connection is linear
Voltage-stablizer input terminal, the linear stabilizer output voltage, the linear voltage regulator connect control logic circuit.
Preferably, the switch includes the first field effect transistor, the second field effect transistor, first field-effect
Transistor gate and drain electrode connect and connect full-bridge synchronous rectifier output end, second field effect transistor gate and drain electrode
Connect and connect half-bridge synchronous rectifier output end, first field effect transistor, the second field effect transistor source electrode difference
Connect linear voltage regulator, the linear stabilizer output voltage.
Preferably, the switch includes the first field effect transistor, the second field effect transistor, first field-effect
Transistor gate and drain electrode connect and connect full-bridge synchronous rectifier output end, second field effect transistor gate and drain electrode
Connect and connect half-bridge synchronous rectifier output end, first field effect transistor, the second field effect transistor source electrode difference
Connect linear voltage regulator, the linear stabilizer output voltage.
Preferably, the switch includes third field effect transistor, the 4th field effect transistor and voltage comparator, institute
It states the drain electrode of third field effect transistor and is separately connected full-bridge synchronous rectifier output end and voltage comparator, the third field-effect
Transistor gate connects voltage comparator；The 4th field effect transistor drain electrode is separately connected half-bridge synchronous rectifier output end
And voltage comparator, the 4th field effect transistor gate connect voltage comparator, the third field effect transistor, the 4th
Field effect transistor source electrode is all connected with linear voltage regulator, the linear stabilizer output voltage.
Compared with prior art, the beneficial effects of the present invention are: structure of the invention principle is simple, two can be connected simultaneously
Rectifier, can automatic discrimination which input have power supply, avoid single road conducting electric current from flowing backward.
Detailed description of the invention
Fig. 1 is control principle block diagram of the present invention；
Fig. 2 is one functional block diagram of the embodiment of the present invention；
Fig. 3 is two functional block diagram of the embodiment of the present invention；
Fig. 4 is three functional block diagram of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of single output circuit framework of doube bridge input, including control
Circuit board 1 is equipped with full-bridge synchronous rectifier 2, half-bridge synchronous rectifier 3 and switch 4 in the control circuit board 1, described
2 input terminal of full-bridge synchronous rectifier connects WPC coil 5, and 3 input terminal of half-bridge synchronous rectifier connects A4WP coil 6, described
Full-bridge synchronous rectifier 2,3 output end of half-bridge synchronous rectifier are separately connected 4 input terminal of switch, 4 output end of switch
7 input terminal of linear voltage regulator, 7 output voltage of linear voltage regulator are connected, the linear voltage regulator 7 connects control logic circuit
8。
Embodiment one:
As shown in Fig. 2, a kind of doube bridge inputs single output circuit framework, including control circuit board 1, pacify in the control circuit board 1
Equipped with full-bridge synchronous rectifier 2, half-bridge synchronous rectifier 3 and switch 4,2 input terminal of full-bridge synchronous rectifier connects WPC
Coil 5,3 input terminal of half-bridge synchronous rectifier connect A4WP coil 6, the full-bridge synchronous rectifier 2, half-bridge synchronous rectification
3 output end of device is separately connected 4 input terminal of switch, and 4 output end of switch connects 7 input terminal of linear voltage regulator, the line
Property 7 output voltage of voltage-stablizer, the linear voltage regulator 7 connects control logic circuit 8.
In the present embodiment, switch 4 includes first diode D1, the second diode D2, the first diode D1 anode
2 output end of full-bridge synchronous rectifier is connected, the second diode D2 anode connects 3 output end of half-bridge synchronous rectifier, described
First diode D1, the second diode D2 cathode are all connected with linear voltage regulator 7,7 output voltage of linear voltage regulator.Work as full-bridge
The voltage of synchronous rectifier output is more than the threshold voltage of first diode D1 and half-bridge synchronous rectifier does not have output voltage, then
First diode D1 can enter and lead to along local derviation, and the second diode D2 is because preventing electric current from flowing backward to half-bridge against partially without being connected
Synchronous rectifier, on the contrary work as threshold voltage and full bridge synchronous that the voltage that half-bridge synchronous rectifier exports is more than the second diode D2
Rectifier does not have output voltage, then the second diode D2 can enter and first diode D1 logical along local derviation because against partially without leading
It is logical, prevent electric current from flowing backward to full-bridge synchronous rectifier, the voltage of this implementation output is that the output voltage of rectifier subtracts the first
The threshold voltage of diode D1, the second diode D2.
Embodiment two:
As shown in figure 3, a kind of doube bridge inputs single output circuit framework, including control circuit board 1, pacify in the control circuit board 1
Equipped with full-bridge synchronous rectifier 2, half-bridge synchronous rectifier 3 and switch 4,2 input terminal of full-bridge synchronous rectifier connects WPC
Coil 5,3 input terminal of half-bridge synchronous rectifier connect A4WP coil 6, the full-bridge synchronous rectifier 2, half-bridge synchronous rectification
3 output end of device is separately connected 4 input terminal of switch, and 4 output end of switch connects 7 input terminal of linear voltage regulator, the line
Property 7 output voltage of voltage-stablizer, the linear voltage regulator 7 connects control logic circuit 8.
In the present embodiment, switch 4 includes the first field effect transistor Q1, the second field effect transistor Q2, and described first
Field effect transistor Q1 grid and drain electrode connect and connect 2 output end of full-bridge synchronous rectifier, second field effect transistor
Q2 grid and drain electrode connect and connect 3 output end of half-bridge synchronous rectifier, the first field effect transistor Q1, the second field-effect
Transistor Q2 source electrode is separately connected linear voltage regulator 7,7 output voltage of linear voltage regulator.
When full-bridge synchronous rectifier output voltage be more than the first field effect transistor Q1 threshold voltage and half-bridge synchronization
Rectifier does not have output voltage, then the first field effect transistor Q1 can be connected and the second field effect transistor Q2 is whole because half-bridge synchronizes
Stream device output voltage does not have the threshold value of field effect transistor and is not turned on, and can prevent electric current from flowing backward to half-bridge synchronous rectifier,
Otherwise work as the threshold voltage that the voltage that half-bridge synchronous rectifier exports is more than the second field effect transistor Q2 and full-bridge synchronous rectification
Device does not have output voltage, then the second field effect transistor Q2 can be connected and the first field effect transistor Q1 is because of full-bridge synchronous rectifier
Output voltage does not have field effect transistor pipe threshold without being connected, and prevents electric current from flowing backward to full-bridge synchronous rectifier, this implementation
The voltage of output is that the output voltage of rectifier subtracts the threshold voltage of field effect transistor, compares embodiment one, the method is because of field
The threshold value of effect transistor can reduce loss lower than the threshold value of diode, raising efficiency.
Embodiment three:
As shown in figure 4, a kind of doube bridge inputs single output circuit framework, including control circuit board 1, pacify in the control circuit board 1
Equipped with full-bridge synchronous rectifier 2, half-bridge synchronous rectifier 3 and switch 4,2 input terminal of full-bridge synchronous rectifier connects WPC
Coil 5,3 input terminal of half-bridge synchronous rectifier connect A4WP coil 6, the full-bridge synchronous rectifier 2, half-bridge synchronous rectification
3 output end of device is separately connected 4 input terminal of switch, and 4 output end of switch connects 7 input terminal of linear voltage regulator, the line
Property 7 output voltage of voltage-stablizer, the linear voltage regulator 7 connects control logic circuit 8.
In the present embodiment, switch 4 includes that third field effect transistor Q3, the 4th field effect transistor Q4 and voltage compare
Device 8, the third field effect transistor Q3 drain electrode is separately connected 2 output end of full-bridge synchronous rectifier and voltage comparator, described
Third field effect transistor Q3 grid connects voltage comparator 8；The 4th field effect transistor Q4 drain electrode is separately connected half-bridge
3 output end of synchronous rectifier and voltage comparator 8, the 4th field effect transistor Q4 grid connects voltage comparator 8, described
Third field effect transistor Q3, the 4th field effect transistor Q4 source electrode are all connected with linear voltage regulator 7, and the linear voltage regulator 7 is defeated
Voltage out.
The present embodiment using a voltage comparator compare two rectifiers output voltage and by third field effect transistor Q3,
4th field effect transistor Q4 is as switching switch, the voltage ratio when the voltage of full-bridge synchronous rectifier output is more than comparison voltage
Third field effect transistor Q3 can be made to be connected compared with device, the 4th field effect transistor Q4 is remained off, and prevents electric current from flowing backward to half-bridge
Synchronous rectifier, conversely, voltage comparator can make the 4th effect when half-bridge synchronous rectifier output voltage is more than comparison voltage
Transistor Q4 is answered to be connected, third field effect transistor Q3 is remained off, and prevents electric current from flowing backward to full-bridge synchronous rectifier, this realization
Method using comparator because can make field effect transistor fully on, as long as thus output point can be made to cut field-effect
The cross-pressure of transistor turns, this output pressure drop are much smaller than embodiment one, the mode of embodiment two.
In conclusion structure of the invention principle is simple, two rectifiers can be connected simultaneously, can automatic discrimination which is defeated
Enter to have power supply, single road conducting electric current is avoided to flow backward.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088316.3A CN109600057A (en) | 2019-01-29 | 2019-01-29 | A kind of single output circuit framework of doube bridge input |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088316.3A CN109600057A (en) | 2019-01-29 | 2019-01-29 | A kind of single output circuit framework of doube bridge input |
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| Publication Number | Publication Date |
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| CN109600057A true CN109600057A (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910088316.3A Pending CN109600057A (en) | 2019-01-29 | 2019-01-29 | A kind of single output circuit framework of doube bridge input |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110075461A1 (en) * | 2009-09-28 | 2011-03-31 | Harris Corporation | Three-phase low-loss rectifier with active gate drive |
| CN105676983A (en) * | 2014-11-21 | 2016-06-15 | 鸿富锦精密工业(武汉)有限公司 | Supply circuit of mainboard |
| US20180212523A1 (en) * | 2014-05-07 | 2018-07-26 | Energous Corporation | Synchronous rectifier design for wireless power receiver |
| CN209545455U (en) * | 2019-01-29 | 2019-10-25 | 江苏元勋电子科技有限公司 | A kind of single output circuit framework of doube bridge input |
-
2019
- 2019-01-29 CN CN201910088316.3A patent/CN109600057A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110075461A1 (en) * | 2009-09-28 | 2011-03-31 | Harris Corporation | Three-phase low-loss rectifier with active gate drive |
| US20180212523A1 (en) * | 2014-05-07 | 2018-07-26 | Energous Corporation | Synchronous rectifier design for wireless power receiver |
| CN105676983A (en) * | 2014-11-21 | 2016-06-15 | 鸿富锦精密工业(武汉)有限公司 | Supply circuit of mainboard |
| CN209545455U (en) * | 2019-01-29 | 2019-10-25 | 江苏元勋电子科技有限公司 | A kind of single output circuit framework of doube bridge input |
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Effective date of registration: 20190510 Address after: 226300 4th Floor of Jianghai Zhihui Park, Nantong High-tech Zone, Nantong City, Jiangsu Province Applicant after: JIANGSU YUANXUN ELECTRONIC TECHNOLOGY Co.,Ltd. Applicant after: Nantong Yuanyuan Electronic Technology Co.,Ltd. Address before: 226000 Room 308, A2 Building, Jianghai Zhihui Park, Nantong High-tech Zone, Jiangsu Province Applicant before: JIANGSU YUANXUN ELECTRONIC TECHNOLOGY Co.,Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190409 |