CN207098684U - A kind of portable power source fast charge control circuit and fast charging type portable power source - Google Patents
A kind of portable power source fast charge control circuit and fast charging type portable power source Download PDFInfo
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- CN207098684U CN207098684U CN201720918856.6U CN201720918856U CN207098684U CN 207098684 U CN207098684 U CN 207098684U CN 201720918856 U CN201720918856 U CN 201720918856U CN 207098684 U CN207098684 U CN 207098684U
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Abstract
The utility model discloses a kind of portable power source fast charge control circuit and fast charging type portable power source, boost control circuit, low pressure difference linear voltage regulator control circuit are used in the portable power source fast charge circuit, and 3 metal-oxide-semiconductors have only been used in the circuit, reduce 1 metal-oxide-semiconductor compared to available circuit, so not only save the design cost of circuit, but also the integrated level of circuit is improved, and the circuit heating of 3 metal-oxide-semiconductors also relative reduction, improve fast charge efficiency.
Description
Technical field
The application is related to electronic technology field, more particularly to a kind of portable power source fast charge control circuit and fast charge movement electricity
Source.
Background technology
In recent years, smart mobile phone is quickly popularized, and supports the mobile phone of fast charge function and mobile phone charging rate can be allowed to lift 2-3 times,
Fast charging mobile phone is liked by user deeply, and fast charging mobile phone spreading speed is also more and more faster.Fast charging mobile phone, which must be popularized also to allow, fast charge function
Cellphone Accessories sales volume increase substantially, such as fast charging type portable power source and fast charger sales volume also increase substantially.
Mobile phone vendor and chip companies are in order to meet market fast charge demand, it is proposed that a variety of fast charge agreements, such as QC3.0 fast charges
Agreement, PE2.0 fast charges agreement, SCP fast charges agreement and VOOC fast charge agreements.Different according to fast charge voltage, fast charge is assisted on the market
View is divided into two major classes：High pressure fast charge and low pressure fast charge.QC3.0 fast charges support 5v to 12v fast charges, PE2.0 fast charges support 5v to 12v
Fast charge, referred to as high pressure fast charge；SCP fast charges support 3 to 5v fast charges, and VOOC fast charges are also to support that 3v is fast to 5v fast charges, referred to as low pressure
Fill.
If fast charging type portable power source needs to support high pressure and low pressure fast charge simultaneously, it is necessary to can export 3-12v voltages to hand
Machine.Portable power source internal cell is all 4.2v or so battery core, if it will realize high pressure fast charge, portable power source chip just needs
Using voltage boosting dc converter technology, cell voltage is boosted to 5-12v from 4.2v；Low pressure fast charge is realized if desired, it is mobile
Power supply chip just needs to use decompression DC switch technology, and cell voltage is depressured to 3-4.2v from 4.2v.That is, fast charge
If portable power source will realize high pressure and low pressure fast charge, it is necessary to while to use boosting and decompression DC converter technology.
Currently, in order to realize portable power source while support high pressure and low pressure fast charge, provide in the prior art as shown in Figure 1
Fast charge controling circuit structure, Fig. 1 be H bridge architectures boosting and decompression.The H bridge architectures include 4 power MOS pipes：M1, M2,
M3 and M4, and H bridges, fast charge protocol control circuitry, boost control circuit and the voltage reduction circuit that an inductance L1 is realized.Specifically
Operation principle is as follows：
Fast charge protocol control circuitry sends out the high pressure or low pressure fast charge demand of oneself by interface and mobile communication, mobile phone
Go out control signal and give fast charge protocol control circuitry, fast charge protocol control circuitry control booster circuit or reduction voltage circuit realize high pressure
Fast charge or low pressure fast charge.
When portable power source chip needs to export the high pressure fast charge voltage higher than portable power source cell voltage, boosting and decompression
Control logic controls M1, M2, M3 and M4, allows the normally opened formation path tubes of M1, and M2 is closed；Control M3 and M4 switch switchings, M3 and M4
Voltage boosting dc converter circuit (Boost DC-DC) is formed, whole H bridges realize boost function.
When portable power source chip needs to export the low pressure fast charge voltage less than portable power source cell voltage, boosting and decompression
Control logic controls M1, M2, M3 and M4, allows M1 and M2 to switch switching, forms decompression DC converter circuit, and M4 is closed in addition,
The normally opened formation path tubes of M3, whole H bridges realize decompression pressure function.
But 4 metal-oxide-semiconductors are contained in above-mentioned fast charge control circuit, so cause fast charge control circuit in the prior art
It is more complicated, and 4 MOS occupy larger chip area, add chip cost, and chip integration also reduces.
Utility model content
The utility model embodiment provides a kind of portable power source fast charge control circuit and fast charging type portable power source, to solve
Fast charge control circuit causes fast charge control circuit more complicated using 4 metal-oxide-semiconductors in the prior art, and 4 MOS occupy compared with
Big chip area, chip cost is added, the problem of chip integration also reduces.
Its specific technical scheme is as follows：
A kind of portable power source fast charge control circuit, including：Fast charge protocol control circuitry, boost control circuit, low voltage difference line
Property regulator control circuit, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, inductance, the of the fast charge protocol control circuitry
One output terminates the input of the boost control circuit, and the control of the boost control circuit terminates the grid of the first metal-oxide-semiconductor,
The grid of boost control circuit output second metal-oxide-semiconductor of termination, the second output termination institute of the fast charge protocol control circuitry
The input of low pressure difference linear voltage regulator control circuit is stated, described in the input termination of the low pressure difference linear voltage regulator control circuit
The grid of 3rd metal-oxide-semiconductor, the colelctor electrode of second metal-oxide-semiconductor connect the colelctor electrode of the 3rd metal-oxide-semiconductor, first metal-oxide-semiconductor
Grounded emitter, the colelctor electrode of first metal-oxide-semiconductor connect the emitter stage of second metal-oxide-semiconductor, the emitter stage of the 3rd metal-oxide-semiconductor
Portable power source output interface is connect, the inductance one terminates battery-end, the colelctor electrode of the first metal-oxide-semiconductor of another termination.
Optionally, during boosting, the boost control circuit controls the first metal-oxide-semiconductor and the second metal-oxide-semiconductor switch to switch, and first
Metal-oxide-semiconductor and the second metal-oxide-semiconductor form voltage boosting dc change-over circuit, and the low pressure difference linear voltage regulator control circuit controls the 3rd MOS
Pipe is in opening.
Optionally, during decompression, the first metal-oxide-semiconductor of the boost control circuit control is normally closed, and the second metal-oxide-semiconductor is normally opened, described low
Pressure difference linear voltage regulator control circuit controls the decompression of the 3rd metal-oxide-semiconductor.
A kind of fast charging type portable power source, including：
Housing；
Battery, it is arranged in the housing；
Portable power source fast charge circuit, is arranged in the housing, and the portable power source fast charge circuit includes：Fast charge agreement control
Circuit processed, boost control circuit, low pressure difference linear voltage regulator control circuit, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, electricity
Sense, the first output of the fast charge protocol control circuitry terminate the input of the boost control circuit, the boosting rectifier control electricity
The grid of control first metal-oxide-semiconductor of termination on road, the grid of boost control circuit output second metal-oxide-semiconductor of termination, the fast charge
Second output of protocol control circuitry terminates the input of the low pressure difference linear voltage regulator control circuit, the low pressure difference linearity
The input of regulator control circuit terminates the grid of the 3rd metal-oxide-semiconductor, and the colelctor electrode of second metal-oxide-semiconductor connects the described 3rd
The colelctor electrode of metal-oxide-semiconductor, the grounded emitter of first metal-oxide-semiconductor, the colelctor electrode of first metal-oxide-semiconductor connect second metal-oxide-semiconductor
Emitter stage, the emitter stage of the 3rd metal-oxide-semiconductor connects portable power source output interface, and the inductance one terminates battery-end, the other end
Connect the colelctor electrode of the first metal-oxide-semiconductor.
Optionally, during boosting, the boost control circuit controls the first metal-oxide-semiconductor and the second metal-oxide-semiconductor switch to switch, and first
Metal-oxide-semiconductor and the second metal-oxide-semiconductor form voltage boosting dc change-over circuit, and the low pressure difference linear voltage regulator control circuit controls the 3rd MOS
Pipe is in opening.
Optionally, during decompression, the first metal-oxide-semiconductor of the boost control circuit control is normally closed, and the second metal-oxide-semiconductor is normally opened, described low
Pressure difference linear voltage regulator control circuit controls the decompression of the 3rd metal-oxide-semiconductor.
Optionally, in addition to：
Communication interface, it is arranged on the housing, the communication interface connects the input of the fast charge protocol control circuitry,
For transmitting voltage requirements to the fast charge protocol control circuitry；
Power output interface, it is arranged on the housing, the power output interface is power input interface.
Only only used 3 metal-oxide-semiconductors by portable power source fast charge control circuit provided by the utility model can be with regard to volume
Boosting fast charge and decompression fast charge are realized, reduces 1 metal-oxide-semiconductor compared to available circuit, so not only saves setting for circuit
Cost is counted, but also improves the integrated level of circuit, and the circuit heating of 3 metal-oxide-semiconductors also relative reduction, improve fast charge effect
Rate.
In addition, needing boost control circuit and voltage reduction circuit compared to prior art, the utility model is provided
Portable power source fast charge circuit only need a boost control circuit and a low pressure difference linear voltage regulator control circuit, and low pressure
The structure of difference linear constant voltage regulator control circuit is extremely simple, so the utility model provides the design hardly possible that circuit reduces circuit
Degree and design cost.
Brief description of the drawings
Fig. 1 is the electrical block diagram of fast charge control circuit in the prior art；
Fig. 2 is a kind of electrical block diagram of portable power source fast charge control circuit in the utility model embodiment；
Fig. 3 is a kind of structural representation of fast charging type portable power source in the utility model embodiment.
Embodiment
Technical solutions of the utility model are described in detail below by accompanying drawing and specific embodiment, it will be appreciated that
Particular technique feature in the utility model embodiment and embodiment is the explanation to technical solutions of the utility model, without
It is to limit, in the case where not conflicting, the particular technique feature in the utility model embodiment and embodiment can be mutual group
Close.
It is illustrated in figure 2 a kind of circuit structure signal of portable power source fast charge control circuit in the utility model embodiment
Figure, including：First metal-oxide-semiconductor 201, the second metal-oxide-semiconductor 202, the 3rd metal-oxide-semiconductor 203, inductance 204, fast charge protocol control circuitry 205, liter
Press control circuit 206, low pressure difference linear voltage regulator control circuit 207.
The input of first output termination boost control circuit 206 of fast charge protocol control circuitry 205, boost control circuit
The grid of 206 control the first metal-oxide-semiconductor 201 of termination, the grid of output the second metal-oxide-semiconductor 202 of termination of boost control circuit 206, soon
Fill the input of the second output termination low pressure difference linear voltage regulator control circuit 207 of protocol control circuitry 205, low pressure difference linearity
The grid of input the 3rd metal-oxide-semiconductor 203 of termination of regulator control circuit 207, the colelctor electrode of the second metal-oxide-semiconductor 202 connect the 3rd metal-oxide-semiconductor
203 colelctor electrode, the grounded emitter of the first metal-oxide-semiconductor 201, the colelctor electrode of the first metal-oxide-semiconductor 201 connect the emitter stage of the second metal-oxide-semiconductor
202, the emitter stage of the 3rd metal-oxide-semiconductor 203 connects portable power source output interface, and inductance 204 1 terminates battery-end, another termination first
The colelctor electrode of metal-oxide-semiconductor 201.
Above-mentioned fast charge protocol control circuitry 205 will be by interface and mobile communication, so as to which can gets mobile phone
High voltage demands or low pressure requirements, then fast charge protocol control circuitry 205 will control boost control circuit come realize boosting and
It is depressured fast charge.
The specific implementation principle for the portable power source fast charge control circuit that the utility model embodiment is provided is as follows：
When portable power source chip needs to export the high pressure fast charge voltage higher than portable power source cell voltage, boosting rectifier control electricity
Road 206 controls the first metal-oxide-semiconductor 201 and the switch switching of the second metal-oxide-semiconductor 202, and the first metal-oxide-semiconductor 201 and the second metal-oxide-semiconductor 202 are formed and risen
DC converter circuit is pressed, node N1 is realized the high pressure required for mobile phone.
Then, low pressure difference linear voltage regulator control circuit 207 controls the 3rd metal-oxide-semiconductor 203, heads straight for the 3rd metal-oxide-semiconductor 203 1
Open realizing route and lead directly to function, allow portable power source output end voltage to be equal to the boosting electricity of voltage boosting dc converter circuit N1 nodes
Pressure, the high pressure fast charge voltage required for last portable power source output end output mobile phone.
When portable power source chip needs to export the low pressure fast charge voltage less than portable power source cell voltage, boosting rectifier control electricity
Road 206 controls the first metal-oxide-semiconductor 201 to close, the second metal-oxide-semiconductor 202 is normally opened, node N1 voltages is equal to cell voltage；Low voltage difference line
Property regulator control circuit 207 control the 3rd metal-oxide-semiconductor realize buck functionality, allow portable power source output end be less than cell voltage, reality
Low pressure fast charge voltage required for existing mobile phone.
The portable power source fast charge control circuit provided by the utility model embodiment only only used 3 metal-oxide-semiconductors just
Volume can realize boosting fast charge and decompression fast charge, reduce 1 metal-oxide-semiconductor compared to available circuit, so not only save electricity
The design cost on road, but also improve the integrated level of circuit, and the circuit heating of 3 metal-oxide-semiconductors also relative reduction, are improved
Fast charge efficiency.
In addition, needing boost control circuit and voltage reduction circuit compared to prior art, the utility model is provided
Portable power source fast charge circuit only need a boost control circuit and a low pressure difference linear voltage regulator control circuit, and low pressure
The structure of difference linear constant voltage regulator control circuit is extremely simple, so the utility model provides the design hardly possible that circuit reduces circuit
Degree and design cost.
Further, a kind of fast charging type portable power source is additionally provided in the utility model embodiment, is illustrated in figure 3 this practicality
The structural representation of mobile portable power source, the portable power source include in new embodiment：
Housing 301；
Battery 302, it is arranged in the housing 301；
Portable power source fast charge circuit 303, is arranged in the housing, and the portable power source fast charge circuit includes：First MOS
Pipe 201, the second metal-oxide-semiconductor 202, the 3rd metal-oxide-semiconductor 203, inductance 204, fast charge protocol control circuitry 205, boost control circuit 206,
Low pressure difference linear voltage regulator control circuit 207, the first output termination boost control circuit 206 of fast charge protocol control circuitry 205
Input, boost control circuit 206 control termination the first metal-oxide-semiconductor 201 grid, boost control circuit 206 output termination
The grid of second metal-oxide-semiconductor 202, the second output termination low pressure difference linear voltage regulator control circuit of fast charge protocol control circuitry 205
207 input, the grid of input the 3rd metal-oxide-semiconductor 203 of termination of low pressure difference linear voltage regulator control circuit 207, the second metal-oxide-semiconductor
202 colelctor electrode connects the colelctor electrode of the 3rd metal-oxide-semiconductor 203, the grounded emitter of the first metal-oxide-semiconductor 201, the current collection of the first metal-oxide-semiconductor 201
Pole connects the emitter stage 202 of the second metal-oxide-semiconductor, and the emitter stage of the 3rd metal-oxide-semiconductor 203 connects portable power source output interface, and inductance 204 1 terminates
Battery-end, the colelctor electrode of the first metal-oxide-semiconductor 201 of another termination.
Above-mentioned fast charge protocol control circuitry 205 will be by interface and mobile communication, so as to which can gets mobile phone
High voltage demands or low pressure requirements, then fast charge protocol control circuitry 205 will control boost control circuit come realize boosting and
It is depressured fast charge.
The specific implementation principle for the portable power source fast charge control circuit that the utility model embodiment is provided is as follows：
When portable power source chip needs to export the high pressure fast charge voltage higher than portable power source cell voltage, boosting rectifier control electricity
Road 206 controls the first metal-oxide-semiconductor 201 and the switch switching of the second metal-oxide-semiconductor 202, and the first metal-oxide-semiconductor 201 and the second metal-oxide-semiconductor 202 are formed and risen
DC converter circuit is pressed, node N1 is realized the high pressure required for mobile phone.
Then, low pressure difference linear voltage regulator control circuit 207 controls the 3rd metal-oxide-semiconductor 203, heads straight for the 3rd metal-oxide-semiconductor 203 1
Open realizing route and lead directly to function, allow portable power source output end voltage to be equal to the boosting electricity of voltage boosting dc converter circuit N1 nodes
Pressure, the high pressure fast charge voltage required for last portable power source output end output mobile phone.
When portable power source chip needs to export the low pressure fast charge voltage less than portable power source cell voltage, boosting rectifier control electricity
Road 206 controls the first metal-oxide-semiconductor 201 to close, the second metal-oxide-semiconductor 202 is normally opened, node N1 voltages is equal to cell voltage；Low voltage difference line
Property regulator control circuit 207 control the 3rd metal-oxide-semiconductor realize buck functionality, allow portable power source output end be less than cell voltage, reality
Low pressure fast charge voltage required for existing mobile phone.
Further, the fast charging type portable power source also includes：
Communication interface 304, it is arranged on housing 301, communication interface 304 connects the input of fast charge protocol control circuitry, uses
In to fast charge protocol control circuitry transmit voltage requirements；
Power output interface 305, it is arranged on housing 301, power output interface 305 is power input interface.
The portable power source fast charge control circuit provided by the utility model embodiment only only used 3 metal-oxide-semiconductors just
Volume can realize boosting fast charge and decompression fast charge, reduce 1 metal-oxide-semiconductor compared to available circuit, so not only save electricity
The design cost on road, but also improve the integrated level of circuit, and the circuit heating of 3 metal-oxide-semiconductors also relative reduction, are improved
Fast charge efficiency.
In addition, needing boost control circuit and voltage reduction circuit compared to prior art, the utility model is provided
Portable power source fast charge circuit only need a boost control circuit and a low pressure difference linear voltage regulator control circuit, and low pressure
The structure of difference linear constant voltage regulator control circuit is extremely simple, so the utility model provides the design hardly possible that circuit reduces circuit
Degree and design cost.
Although having been described for the preferred embodiment of the application, one of ordinary skilled in the art once knows substantially
Creative concept, then other change and modification can be made to these embodiments.So appended claims are intended to be construed to wrap
Include preferred embodiment and fall into having altered and changing for the application scope.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the application to the application
God and scope.So, if these modifications and variations of the application belong to the scope of the application claim and its equivalent technologies
Within, then the application is also intended to comprising including these changes and modification.
Claims (7)
- A kind of 1. portable power source fast charge control circuit, it is characterised in that including：Fast charge protocol control circuitry, boost control circuit, Low pressure difference linear voltage regulator control circuit, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, inductance, the fast charge protocol integrated test system First output of circuit terminates the input of the boost control circuit, and the control of the boost control circuit terminates the first MOS The grid of pipe, the grid of boost control circuit output second metal-oxide-semiconductor of termination, the second of the fast charge protocol control circuitry are defeated Go out the input for terminating the low pressure difference linear voltage regulator control circuit, the input of the low pressure difference linear voltage regulator control circuit Terminating the grid of the 3rd metal-oxide-semiconductor, the colelctor electrode of second metal-oxide-semiconductor connects the colelctor electrode of the 3rd metal-oxide-semiconductor, and described first The grounded emitter of metal-oxide-semiconductor, the colelctor electrode of first metal-oxide-semiconductor connect the emitter stage of second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor Emitter stage connect portable power source output interface, the inductance one terminates battery-end, the colelctor electrode of the first metal-oxide-semiconductor of another termination.
- 2. circuit as claimed in claim 1, it is characterised in that during boosting, the boost control circuit control the first metal-oxide-semiconductor with And the second metal-oxide-semiconductor switch switching, the first metal-oxide-semiconductor and the second metal-oxide-semiconductor form voltage boosting dc change-over circuit, the low pressure difference linearity is steady Depressor control circuit controls the 3rd metal-oxide-semiconductor to be in opening.
- 3. circuit as claimed in claim 1, it is characterised in that during decompression, the boost control circuit controls the first metal-oxide-semiconductor normal Close, the second metal-oxide-semiconductor is normally opened, and the low pressure difference linear voltage regulator control circuit controls the decompression of the 3rd metal-oxide-semiconductor.
- A kind of 4. fast charging type portable power source, it is characterised in that including：Housing；Battery, it is arranged in the housing；Portable power source fast charge circuit, is arranged in the housing, and the portable power source fast charge circuit includes：Fast charge protocol integrated test system electricity Road, boost control circuit, low pressure difference linear voltage regulator control circuit, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, inductance, First output of the fast charge protocol control circuitry terminates the input of the boost control circuit, the boost control circuit The grid of control the first metal-oxide-semiconductor of termination, the grid of boost control circuit output second metal-oxide-semiconductor of termination, the fast charge agreement Second output of control circuit terminates the input of the low pressure difference linear voltage regulator control circuit, the low pressure difference linearity voltage stabilizing The input of device control circuit terminates the grid of the 3rd metal-oxide-semiconductor, and the colelctor electrode of second metal-oxide-semiconductor connects the 3rd metal-oxide-semiconductor Colelctor electrode, the grounded emitter of first metal-oxide-semiconductor, the colelctor electrode of first metal-oxide-semiconductor connects the transmitting of second metal-oxide-semiconductor Pole, the emitter stage of the 3rd metal-oxide-semiconductor connect portable power source output interface, and the inductance one terminates battery-end, another termination first The colelctor electrode of metal-oxide-semiconductor.
- 5. fast charging type portable power source as claimed in claim 4, it is characterised in that during boosting, the boost control circuit control first Metal-oxide-semiconductor and the switch switching of the second metal-oxide-semiconductor, the first metal-oxide-semiconductor and the second metal-oxide-semiconductor form voltage boosting dc change-over circuit, the low pressure Difference linear constant voltage regulator control circuit controls the 3rd metal-oxide-semiconductor to be in opening.
- 6. fast charging type portable power source as claimed in claim 4, it is characterised in that during decompression, the boost control circuit control first Metal-oxide-semiconductor is normally closed, and the second metal-oxide-semiconductor is normally opened, and the low pressure difference linear voltage regulator control circuit controls the decompression of the 3rd metal-oxide-semiconductor.
- 7. fast charging type portable power source as claimed in claim 4, it is characterised in that also include：Communication interface, it is arranged on the housing, the communication interface connects the input of the fast charge protocol control circuitry, is used for Voltage requirements are transmitted to the fast charge protocol control circuitry；Power output interface, it is arranged on the housing, the power output interface is power input interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720918856.6U CN207098684U (en) | 2017-07-26 | 2017-07-26 | A kind of portable power source fast charge control circuit and fast charging type portable power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720918856.6U CN207098684U (en) | 2017-07-26 | 2017-07-26 | A kind of portable power source fast charge control circuit and fast charging type portable power source |
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| Publication Number | Publication Date |
|---|---|
| CN207098684U true CN207098684U (en) | 2018-03-13 |
Family
ID=61546360
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720918856.6U Active CN207098684U (en) | 2017-07-26 | 2017-07-26 | A kind of portable power source fast charge control circuit and fast charging type portable power source |
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| CN (1) | CN207098684U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171417A (en) * | 2017-07-26 | 2017-09-15 | 深圳英集芯科技有限公司 | A kind of portable power source fills control circuit and fast charging type portable power source soon |
| CN112994451A (en) * | 2021-03-04 | 2021-06-18 | 西安微电子技术研究所 | Pre-stabilized voltage output circuit capable of realizing boosting, maintaining and reducing voltage and control method |
-
2017
- 2017-07-26 CN CN201720918856.6U patent/CN207098684U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107171417A (en) * | 2017-07-26 | 2017-09-15 | 深圳英集芯科技有限公司 | A kind of portable power source fills control circuit and fast charging type portable power source soon |
| CN112994451A (en) * | 2021-03-04 | 2021-06-18 | 西安微电子技术研究所 | Pre-stabilized voltage output circuit capable of realizing boosting, maintaining and reducing voltage and control method |
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Address after: Room 3104, block a, building 8, Shenzhen International Innovation Valley, Dashi 1st Road, Xili community, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen yingjixin Technology Co.,Ltd. Address before: 518000 Room 101, 5 / F, Dongfang Science and technology building, No. 16, Keyuan Road, Yuehai street, Nanshan District, Shenzhen, Guangdong Province Patentee before: SHENZHEN INJOINIC TECHNOLOGY Co.,Ltd. |