CN206908515U - A kind of synchronization lifting volt circuit of wide-voltage range input - Google Patents
A kind of synchronization lifting volt circuit of wide-voltage range input Download PDFInfo
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- CN206908515U CN206908515U CN201720683512.1U CN201720683512U CN206908515U CN 206908515 U CN206908515 U CN 206908515U CN 201720683512 U CN201720683512 U CN 201720683512U CN 206908515 U CN206908515 U CN 206908515U
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Abstract
The utility model is a kind of synchronization lifting volt circuit of wide-voltage range input, including sampling resistor R1, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2 and inductance L1, one end connection power supply VIN of the sampling resistor R1, the sampling resistor R1 other end is connected to metal-oxide-semiconductor Q1 D poles as input, metal-oxide-semiconductor Q1 S poles, metal-oxide-semiconductor Q2 D poles are connected with inductance L1 left end, and metal-oxide-semiconductor Q4 S poles, metal-oxide-semiconductor Q3 D poles are connected with inductance L1 right-hand member.The utility model employs the synchronization lifting volt circuit that four metal-oxide-semiconductors add an energy storage inductor, and wide input voltage range 4.7V to 60V, output current is up to 2.5A.
Description
Technical field
A kind of step-up/step-down circuit is the utility model is related to, specifically a kind of synchronization lifting piezoelectricity of wide-voltage range input
Road.
Background technology
Prior art is to realize lithium cell charging function that this wide scope inputs by Two Stages, and it is particularly as being
It is being depressured to obtain required charging voltage by Buck after boosting by Boost.Also a kind of is by Sepic topologys
Buck realizes this function.
Buck charge function is realized by Boost and Buck Two Stages, and efficiency is low.The energy storage inductor needed, control
Coremaking piece and peripheral components are more, and cost is high.Technological difficulties are that hardware topology determines that its efficiency only has 85% or so and institute
Need device more, cost is higher.
By Sepic topological realization buck charge functions, power output can not accomplish very greatly, to reach in output current after all
In the case of 2.5A, the conduction loss of output diode is non-negligible, excessive cooling mechanism under limited space
Absolutely not allow.And hardware topology determines that it can only be used in the case where power output is smaller.
Control chip used in prior art can not accomplish input current, output current, three loops of output voltage it is real-time
Monitoring, does not export the functions such as disconnecting, charging termination and integrated error protection so that circuit can not provide optimum performance and height
Reliability.
Utility model content
The purpose of this utility model is to provide a kind of synchronization lifting volt circuit of wide-voltage range input, above-mentioned to solve
The problem of being proposed in background technology.
To achieve the above object, the utility model provides following technical scheme：
A kind of synchronization lifting volt circuit of wide-voltage range input, including sampling resistor R1, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2 and electricity
Feel L1, one end connection power supply VIN of the sampling resistor R1, the sampling resistor R1 other end is connected to metal-oxide-semiconductor Q1 D poles conduct
Input, metal-oxide-semiconductor Q1 S poles, metal-oxide-semiconductor Q2 D poles are connected with inductance L1 left end, metal-oxide-semiconductor Q4 S poles, metal-oxide-semiconductor Q3 D poles
It is connected with inductance L1 right-hand member, one end of metal-oxide-semiconductor Q2 S poles, metal-oxide-semiconductor Q3 S poles and input peak point current sampling resistor R2
It is connected, the input peak point current sampling resistor R2 other end is connected to ground, metal-oxide-semiconductor Q4 D poles, output filter capacitor C1 positive pole
It is connected with output current sampling resistor R3 one end, filter capacitor C1 negative pole ground connection, output current sampling resistor R3's is another
The positive pole of termination output battery pack.
As further technical scheme of the present utility model：The power supply VIN is that charger inputs D/C voltage, voltage range
It is 4.7V-60V.
Compared with prior art, the beneficial effects of the utility model are：The utility model employs four metal-oxide-semiconductors and adds a storage
The synchronization lifting volt circuit of energy inductance, wide input voltage range 4.7V to 60V, output current is up to 2.5A.
Brief description of the drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
The technical scheme in the embodiment of the utility model will be clearly and completely described below, it is clear that described
Embodiment is only the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
Refering to Fig. 1；In the utility model embodiment, a kind of synchronization lifting volt circuit of wide-voltage range input, including adopt
Sample resistance R1, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2 and inductance L1, the sampling resistor R1 one end connection power supply VIN, sampling resistor R1's
The other end is connected to metal-oxide-semiconductor Q1 D poles as input, and metal-oxide-semiconductor Q1 S poles, metal-oxide-semiconductor Q2 D poles are connected with inductance L1 left end
Connect, metal-oxide-semiconductor Q4 S poles, metal-oxide-semiconductor Q3 D poles are connected with inductance L1 right-hand member, metal-oxide-semiconductor Q2 S poles, metal-oxide-semiconductor Q3 S poles and
Input peak point current sampling resistor R2 one end is connected, and the input peak point current sampling resistor R2 other end is connected to ground, metal-oxide-semiconductor
Q4 D poles, output filter capacitor C1 positive pole are connected with output current sampling resistor R3 one end, and filter capacitor C1 negative pole connects
Ground, the positive pole of output current sampling resistor R3 another termination output battery pack.
Power supply VIN is that charger inputs D/C voltage, and voltage range is 4.7V-60V.
Operation principle of the present utility model is：When input voltage VIN is more than output voltage B+, circuit is operated in BUCK moulds
Formula, metal-oxide-semiconductor Q4 is constantly on, and metal-oxide-semiconductor Q3 is closed always, metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2 alternate conductions, forms a synchronous buck
Circuit.
It is that circuit is operated in BOOST patterns, and metal-oxide-semiconductor Q1 is constantly on, MOS when input voltage VIN is less than output voltage B+
Pipe Q2 is closed always, metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4 alternate conductions, forms a synchronous voltage booster circuit.
When input voltage VIN is in output voltage B+ or so, circuit is operated in BUCK-BOOST patterns, in a week
Interim, metal-oxide-semiconductor Q2 first and metal-oxide-semiconductor Q4 are open-minded, and metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3 are closed, and then metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q4 are open-minded,
Metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3 is closed.After half period, metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q3 are open-minded, and metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q4 are closed
Close, then metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q4 are open-minded, and metal-oxide-semiconductor Q2 and metal-oxide-semiconductor Q3 are closed, until completing a cycle.
The outstanding representation of these three mode of operations, ensure that in wide range input voltage, obtain to high efficient and reliable lithium electricity
Charging voltage and electric current needed for the group of pond.
Claims (2)
1. a kind of synchronization lifting volt circuit of wide-voltage range input, including sampling resistor R1, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2 and inductance
L1, it is characterised in that one end connection power supply VIN of the sampling resistor R1, the sampling resistor R1 other end are connected to metal-oxide-semiconductor Q1
D poles as input, metal-oxide-semiconductor Q1 S poles, metal-oxide-semiconductor Q2 D poles is connected with inductance L1 left end, metal-oxide-semiconductor Q4 S poles, MOS
Pipe Q3 D poles are connected with inductance L1 right-hand member, metal-oxide-semiconductor Q2 S poles, metal-oxide-semiconductor Q3 S poles and input peak point current sampling resistor
R2 one end is connected, and the input peak point current sampling resistor R2 other end is connected to ground, metal-oxide-semiconductor Q4 D poles, output filter capacitor
C1 positive pole is connected with output current sampling resistor R3 one end, filter capacitor C1 negative pole ground connection, output current sampling resistor
The positive pole of R3 another termination output battery pack.
A kind of 2. synchronization lifting volt circuit of wide-voltage range input according to claim 1, it is characterised in that the electricity
Source VIN is that charger inputs D/C voltage, and voltage range is 4.7V-60V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720683512.1U CN206908515U (en) | 2017-06-13 | 2017-06-13 | A kind of synchronization lifting volt circuit of wide-voltage range input |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720683512.1U CN206908515U (en) | 2017-06-13 | 2017-06-13 | A kind of synchronization lifting volt circuit of wide-voltage range input |
Publications (1)
| Publication Number | Publication Date |
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| CN206908515U true CN206908515U (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720683512.1U Active CN206908515U (en) | 2017-06-13 | 2017-06-13 | A kind of synchronization lifting volt circuit of wide-voltage range input |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306506A (en) * | 2018-01-31 | 2018-07-20 | 上海竹路电子科技有限公司 | A kind of DC-DC conversion circuit |
-
2017
- 2017-06-13 CN CN201720683512.1U patent/CN206908515U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306506A (en) * | 2018-01-31 | 2018-07-20 | 上海竹路电子科技有限公司 | A kind of DC-DC conversion circuit |
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