CN110535203A - A kind of airborne portable USB charging module of high reliability - Google Patents
A kind of airborne portable USB charging module of high reliability Download PDFInfo
- Publication number
- CN110535203A CN110535203A CN201910777174.1A CN201910777174A CN110535203A CN 110535203 A CN110535203 A CN 110535203A CN 201910777174 A CN201910777174 A CN 201910777174A CN 110535203 A CN110535203 A CN 110535203A
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- usb
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- 239000003381 stabilizer Substances 0.000 claims abstract description 23
- 230000009467 reduction Effects 0.000 claims abstract description 8
- 230000036772 blood pressure Effects 0.000 claims abstract description 6
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 42
- 239000000203 mixture Substances 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 2
- 230000006837 decompression Effects 0.000 claims 3
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000032258 transport 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention is a kind of airborne portable USB charging module of high reliability, the USB charging module is made of USB voltage reduction module and USB socket, the USB voltage reduction module includes multichannel USB current limiting switch, in the present embodiment, it is set as two-way, one end of multichannel USB current limiting switch is connected to airplane power source end by voltage-releasing voltage stabilizer DC/DC, in the application environment of the present embodiment, airplane power source end provides DC28V power supply, to obtain from the voltage output after the lowering and stabilizing blood pressure of airplane power source end, the other end is separately connected corresponding USB socket, forms the multichannel USB port output of different electric currents.The present invention provides 5V/2.1A respectively, and 5V/1A charging port can provide charging port for the consumer products of any required USB interface, including most of mobile phones, tablet computer and GPS device, and its is small and exquisite, economical, is easily installed, and can install cockpit and interior compartment.
Description
Technical field
The present invention relates to airborne multimedia equipment technical fields, and in particular to a kind of airborne portable USB charging of high reliability
Module.
Background technique
At present on the market there are many mature USB charger, this common USB charger is developed to existing by pervious 5W
Nearly hectowatt fast charge, high pressure fast charge and low pressure fast charge haggle mutually, and QC, FCP, SCP, MTK PE, AFC, USB PD etc. are various
A hundred flowers blossom for fast charge agreement, has in mancarried electronic aid (mobile phone, tablet computer etc.) and is widely applied.
Problem disadvantage: 1) generic USB charger can only work at alternating current AC86 ~ 260V/50-60HZ, in airborne DC28V
Power supply environment can not work；2) charger baby is due to having that safety forbids band to board a plane, passenger and flight attendant aircraft without
Method charges to mancarried electronic aid, provides passenger and flight attendant trip brings very big inconvenience, be badly in need of solving.
Summary of the invention
The object of the present invention is to overcome the problems of the prior art, provides a kind of airborne portable USB of high reliability and fills
Electric module.
To realize above-mentioned technical purpose and the technique effect, the invention is realized by the following technical scheme:
A kind of airborne portable USB charging module of high reliability, the USB charging module are made of USB voltage reduction module and USB socket,
The USB voltage reduction module includes multichannel USB current limiting switch, and one end of multichannel USB current limiting switch is connected by voltage-releasing voltage stabilizer DC/DC
It is connected to airplane power source end, to obtain from the voltage output after the lowering and stabilizing blood pressure of airplane power source end, the other end is separately connected corresponding USB
Socket forms the multichannel USB port output of different electric currents.
Further, the voltage-releasing voltage stabilizer DC/DC uses integrated-type high side MOSFET voltage-releasing voltage stabilizer chip, the collection
The end VIN and the end EN for forming high side MOSFET voltage-releasing voltage stabilizer chip are connected to airplane power source end, while passing through capacitor CINGround connection,
The end RT/SYNC passes through resistance RTGround connection, the end SS pass through capacitor CSSGround connection, the end BOOT pass through capacitor CBOOTThe end SW is connected, the end SW is logical
It crosses inductance L and is connected to the output VOUT, and the end SW is grounded by diode D reverse phase, inductance L and output end VOUTBetween lead to respectively
Cross capacitor COUTGround connection and concatenated resistance RFBTWith resistance RFBBGround connection, resistance RFBTWith resistance RFBBBetween public connecting end
It is connected to the end FB of integrated-type high side MOSFET voltage-releasing voltage stabilizer chip.
Further, the USB current limiting switch uses TPS2511 current limiting switch chip, for voltage-releasing voltage stabilizer DC/DC
The electric current of output end carries out current limit respectively, forms the different electric current output of multichannel.
Further, TVS protection circuit is equipped between the voltage-releasing voltage stabilizer DC/DC and airplane power source end, the TVS is anti-
Protection circuit includes fuse, TVS pipe and counnter attack diode, and one end of the fuse is connected to the positive terminal at airplane power source end
DC+, one end of the other end connection counnter attack diode of fuse, the other end of the counnter attack diode is positive output end VO+,
One end of the TVS pipe is connected to the negative phase end DC- at airplane power source end, and the other end of TVS pipe is connected to the other end of fuse
On, and the negative phase end DC- at airplane power source end is as negative output end VO-.
Further, filter circuit, the filter circuit are equipped between the voltage-releasing voltage stabilizer DC/DC and airplane power source end
Including sequentially connected safety capacitor, common mode inductance, special filter and π filter, the both ends of the safety capacitor connect respectively
Meet the positive output end VO+ and negative output end VO- at airplane power source end, the π filter by an inductance and two capacitors according to
Secondary connection composition, wherein the both ends of first capacitor are as input terminal, the both ends of second capacitor are as output end, and conduct
One end high level end of second capacitor of output end, another termination input ground end, the input ground end are isolated with system location.
Further, the other end of the USB current limiting switch is also connected with charging indication, the charging indication
Including input terminal USB_VBUSA, the collector of the input terminal USB_VBUSA connecting triode Q10, the transmitting of triode Q10
Pole connects the positive terminal of Light-emitting diode LED 2, and the negative pole end of Light-emitting diode LED 2 is grounded by resistance R28, triode Q10
Base stage pass sequentially through the collector of resistance R26 and resistance R27 connecting triode Q10, the public affairs between resistance R26 and resistance R27
The positive terminal of connecting pin connection Light-emitting diode LED 6, the negative pole end of Light-emitting diode LED 6 are grounded by resistance R60 altogether, and
Public connecting end between resistance R26 and resistance R27 is connect by capacitor C20 in parallel, capacitor C21, capacitor C22, capacitor C54
Ground.
Further, the USB socket uses 3.0 type A interface of USB.
The beneficial effects of the present invention are:
The present invention is succinct, modular frame mode, easy to produce and assembling, and providing two-way charging interface USB 5V/1A can be with
For small-power charging of mobile devices, USB 5V/2.1A can be high-power charging of mobile devices, have USB cable compensation function,
It flexible and efficient can charge for Mobile portable equipment, there is powerful reliable over-voltage, overcurrent, excess temperature, surge self-protection to meet Do-
160G, Do-313, CCAR25.853 aviation certification, each USB port correspond to LED and precisely show the USB port charged state, can be quick
Installation and removal, are easy to use and maintenance, may be mounted at seat, panel, access DC28V power supply in cabin in cabin, to portable
Equipment charge.
Detailed description of the invention
Fig. 1 is the functional block diagram of USB charging module of the present invention；
Fig. 2 is voltage-releasing voltage stabilizer DC/DC circuit diagram of the invention；
Fig. 3 is USB current limiting switch circuit diagram of the invention；
Fig. 4 is TVS protection circuit schematic diagram of the invention；
Fig. 5 is filter circuit schematic diagram of the invention；
Fig. 6 is charging indication schematic diagram of the invention.
Specific embodiment
It is below with reference to the accompanying drawings and in conjunction with the embodiments, next that the present invention will be described in detail.
As shown in Figure 1, a kind of airborne portable USB charging module of high reliability, the USB charging module is by USB voltage reduction module
It is formed with USB socket, the USB voltage reduction module includes multichannel USB current limiting switch, in the present embodiment, is set as two-way, multichannel
One end of USB current limiting switch is connected to airplane power source end by voltage-releasing voltage stabilizer DC/DC, in the application environment of the present embodiment,
Airplane power source end provides DC28V power supply, and to obtain from the voltage output after the lowering and stabilizing blood pressure of airplane power source end, the other end is separately connected
Corresponding USB socket forms the multichannel USB port output of different electric currents, and the purpose of the present embodiment is by the airplane power source end of DC28V
Become 5V/2.1A, 5V/1A carries out two-way output.
As shown in Fig. 2, the voltage-releasing voltage stabilizer DC/DC uses integrated-type high side MOSFET voltage-releasing voltage stabilizer chip, specifically
Model 40V, 3.5A, the wide input voltage range with 4V to 40V can provide DC28V power supply for airplane power source end,
The end VIN and the end EN of the integrated-type high side MOSFET voltage-releasing voltage stabilizer chip are connected to the airplane power source end of DC28V, lead to simultaneously
Cross capacitor CINGround connection, the end RT/SYNC pass through resistance RTGround connection, the end SS pass through capacitor CSSGround connection, the end BOOT pass through capacitor CBOOTEven
The end SW is connect, the end SW is connected to the output V by inductance LOUT, output is+5V in the present embodiment, and the end SW is anti-by diode D
It is mutually grounded, inductance L and output end VOUTBetween respectively pass through capacitor COUTGround connection and concatenated resistance RFBTWith resistance RFBBIt connects
Ground, resistance RFBTWith resistance RFBBBetween public connecting end be connected to the FB of integrated-type high side MOSFET voltage-releasing voltage stabilizer chip
End.
As shown in figure 3, the USB current limiting switch uses TPS2511 current limiting switch chip, compatible USB 2.0 and USB
3.0 power switches carry out current limit for the electric current to voltage-releasing voltage stabilizer DC/DC output end respectively, it is different to form multichannel
Electric current output, in the present embodiment, the current limit to voltage-releasing voltage stabilizer DC/DC output are 2.1A and 1A, with 5V/2.1A and
5V/1A transports to USB socket.
As shown in figure 4, being equipped with TVS protection circuit, the TVS between the voltage-releasing voltage stabilizer DC/DC and airplane power source end
Protection circuit includes fuse, TVS pipe and counnter attack diode, and one end of the fuse is connected to the positive at airplane power source end
DC+ is held, one end of the other end connection counnter attack diode of fuse, the other end of the counnter attack diode is positive output end VO
+, one end of the TVS pipe is connected to the negative phase end DC- at airplane power source end, and the other end of TVS pipe is connected to the another of fuse
On end, and the negative phase end DC- at airplane power source end is as negative output end VO-, by fuse itself fuse cutting electric current come
Circuit safety operation is protected, prevents power supply reversed by counnter attack diode, an instantaneous large-current is absorbed by TVS pipe, it
Both end voltage strangulation one it is scheduled numerically, so that subsequent circuit element be protected not rushed by high voltage transient spike
It hits.
As shown in figure 5, being equipped with filter circuit, the filtered electrical between the voltage-releasing voltage stabilizer DC/DC and airplane power source end
Road includes sequentially connected safety capacitor, common mode inductance, special filter and π filter, in the present embodiment, special filter
50KZ low frequency radiation is filtered out for filtering out 10MHZ high-frequency harmonic for common aviation special filter, the safety capacitor
Both ends are separately connected the positive output end VO+ and negative output end VO- at airplane power source end, the π filter by an inductance and
Two capacitors are sequentially connected composition, wherein the both ends of first capacitor are as input terminal, the both ends of second capacitor are as output
End, and one end high level end of second capacitor as output end, another termination input ground end, the input ground end and system
Location isolation, to filtering common mode and DM EMI.
As shown in fig. 6, the other end of the USB current limiting switch is also connected with charging indication, the charging instruction electricity
Road includes input terminal USB_VBUSA, the collector of the input terminal USB_VBUSA connecting triode Q10, the hair of triode Q10
Emitter-base bandgap grading connects the positive terminal of Light-emitting diode LED 2, and the negative pole end of Light-emitting diode LED 2 is grounded by resistance R28, triode
The base stage of Q10 passes sequentially through the collector of resistance R26 and resistance R27 connecting triode Q10, between resistance R26 and resistance R27
Public connecting end connects the positive terminal of Light-emitting diode LED 6, and the negative pole end of Light-emitting diode LED 6 is grounded by resistance R60, and
And the public connecting end between resistance R26 and resistance R27 is connect by capacitor C20 in parallel, capacitor C21, capacitor C22, capacitor C54
Ground, in the present embodiment, when 28V accesses USB charging module, system worked well generates 5V voltage, by LED and above-mentioned
Resistor voltage divider circuit, LED issue green light, illustrate that power module is working properly, if LED does not shine, possible cause is as follows:
1) airborne power supply 28V is not connected or airborne 28V power supply output abnormality；
2) PED power module damages；
Charging instruction is a blue led, and a yellow led, which is combined, shows different colours according to the composite principle of light, is filled
Bright simultaneously synthesize of two LED is shown as blue when electric at green USB port, full of not working with yellow when not filling, the bright USB of blue
Blue is shown as at mouthful.
The USB socket uses 3.0 type A interface of USB, in addition, in the present embodiment, also setting up at USB socket
ESD protective device, protects USB charging module not to be damaged by static electricity, and also can protect charging equipment not by the interference of ESD and damage
It is bad.
The principle of the invention
In the present invention aviation power end provide DC 28V power supply by voltage-releasing voltage stabilizer DC/DC conversion DC 5V 3.5A using
USB current limiting switch is divided into two-way: DC 5V/2.1A charges or supports fast charge electronic equipment to high-power mancarried electronic aid all the way
Charging, all the way DC 5V/1A give low-power portable electronic equipment charging, 3.0 type A interface compatibility of USB in the market it is all just
Take equipment charge line input terminal, plug number is up to the common 1000 plug numbers of charger in 50,000 times or more remote supermarkets fields, and two
USB socket nearby has the obvious display USB socket charged state of corresponding LED light.
In addition, it should be noted that, unless stated otherwise or point out, the otherwise term " first " in specification, "
The descriptions such as two " are used only for distinguishing various components, element, step etc. in specification, without being intended to indicate that various components, member
Logical relation or ordinal relation between element, step etc..
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of airborne portable USB charging module of high reliability, which is characterized in that the USB charging module by USB voltage reduction module and
USB socket composition, the USB voltage reduction module includes multichannel USB current limiting switch, and one end of multichannel USB current limiting switch passes through decompression
Voltage-stablizer DC/DC is connected to airplane power source end, to obtain from the voltage output after the lowering and stabilizing blood pressure of airplane power source end, other end difference
Corresponding USB socket is connected, the multichannel USB port output of different electric currents is formed.
2. the airborne portable USB charging module of high reliability according to claim 1, which is characterized in that the lowering and stabilizing blood pressure
Device DC/DC uses integrated-type high side MOSFET voltage-releasing voltage stabilizer chip, the integrated-type high side MOSFET voltage-releasing voltage stabilizer chip
The end VIN and the end EN be connected to airplane power source end, while passing through capacitor CINGround connection, the end RT/SYNC pass through resistance RTGround connection, the end SS
Pass through capacitor CSSGround connection, the end BOOT pass through capacitor CBOOTThe end SW is connected, the end SW is connected to the output V by inductance LOUT, and SW
End is grounded by diode D reverse phase, inductance L and output end VOUTBetween respectively pass through capacitor COUTGround connection and concatenated resistance
RFBTWith resistance RFBBGround connection, resistance RFBTWith resistance RFBBBetween public connecting end to be connected to integrated-type high side MOSFET decompression steady
The end FB of depressor chip.
3. the airborne portable USB charging module of high reliability according to claim 1, which is characterized in that the USB current limliting is opened
It closes and uses TPS2511 current limiting switch chip, carry out current limit respectively for the electric current to voltage-releasing voltage stabilizer DC/DC output end,
Form the different electric current output of multichannel.
4. the airborne portable USB charging module of high reliability according to claim 1, which is characterized in that the lowering and stabilizing blood pressure
TVS protection circuit is equipped between device DC/DC and airplane power source end, the TVS protection circuit includes fuse, TVS pipe and counnter attack
Diode, one end of the fuse are connected to the positive terminal DC+ at airplane power source end, and the other end of fuse connects two pole of counnter attack
The other end of one end of pipe, the counnter attack diode is positive output end VO+, and one end of the TVS pipe is connected to airplane power source
The negative phase end DC- at end, the other end of TVS pipe are connected on the other end of fuse, and the negative phase end DC- at airplane power source end makees
For negative output end VO-.
5. the airborne portable USB charging module of high reliability according to claim 1 or 4, which is characterized in that the decompression is steady
Filter circuit is equipped between depressor DC/DC and airplane power source end, the filter circuit includes sequentially connected safety capacitor, common mode
The both ends of inductance, special filter and π filter, the safety capacitor are separately connected the positive output end VO+ at airplane power source end
With negative output end VO-, the π filter is sequentially connected and is formed by an inductance and two capacitors, wherein first capacitor
Both ends are as input terminal, and the both ends of second capacitor are as output end, and one end of second capacitor as output end is high
Level terminal, another termination input ground end, the input ground end are isolated with system location.
6. the airborne portable USB charging module of high reliability according to claim 1, which is characterized in that the USB current limliting is opened
The other end of pass is also connected with charging indication, and the charging indication includes input terminal USB_VBUSA, the input terminal
The collector of USB_VBUSA connecting triode Q10, the positive terminal of the emitter connection Light-emitting diode LED 2 of triode Q10, hair
The negative pole end of optical diode LED2 is grounded by resistance R28, and the base stage of triode Q10 passes sequentially through resistance R26 and resistance R27 and connects
The collector of triode Q10 is connect, the anode of the public connecting end connection Light-emitting diode LED 6 between resistance R26 and resistance R27
End, the negative pole end of Light-emitting diode LED 6 is grounded by resistance R60, and the public connecting end between resistance R26 and resistance R27
Pass through capacitor C20 in parallel, capacitor C21, capacitor C22, capacitor C54 ground connection.
7. the airborne portable USB charging module of high reliability according to claim 1, which is characterized in that the USB socket is adopted
With 3.0 type A interface of USB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910777174.1A CN110535203A (en) | 2019-08-22 | 2019-08-22 | A kind of airborne portable USB charging module of high reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910777174.1A CN110535203A (en) | 2019-08-22 | 2019-08-22 | A kind of airborne portable USB charging module of high reliability |
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| Publication Number | Publication Date |
|---|---|
| CN110535203A true CN110535203A (en) | 2019-12-03 |
Family
ID=68663925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910777174.1A Pending CN110535203A (en) | 2019-08-22 | 2019-08-22 | A kind of airborne portable USB charging module of high reliability |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202404522U (en) * | 2011-12-13 | 2012-08-29 | 青岛海信电器股份有限公司 | USB (universal serial bus) interface power circuit, docking station and tablet computer |
| DE202013104052U1 (en) * | 2013-07-23 | 2013-09-18 | Pro Car Gmbh & Co. Kg | Compact USB double socket with built-in buck converter |
| CN104901407A (en) * | 2015-05-28 | 2015-09-09 | 东风商用车有限公司 | Power source management circuit of commercial vehicle diagnostic protocol adapter |
| CN207967998U (en) * | 2018-03-01 | 2018-10-12 | 深圳市天捷恒大科技发展有限公司 | Double USB onboard chargers |
| KR20190044960A (en) * | 2017-10-23 | 2019-05-02 | 엘에스오토모티브테크놀로지스 주식회사 | USB charger for vehicle |
| CN209282899U (en) * | 2018-11-22 | 2019-08-20 | 深圳市多尼卡航空电子有限公司 | A kind of airborne USB charging control circuit and power supply |
| CN210380302U (en) * | 2019-08-22 | 2020-04-21 | 苏州科可瑞尔航空技术有限公司 | High-reliability airborne portable USB charging module |
-
2019
- 2019-08-22 CN CN201910777174.1A patent/CN110535203A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202404522U (en) * | 2011-12-13 | 2012-08-29 | 青岛海信电器股份有限公司 | USB (universal serial bus) interface power circuit, docking station and tablet computer |
| DE202013104052U1 (en) * | 2013-07-23 | 2013-09-18 | Pro Car Gmbh & Co. Kg | Compact USB double socket with built-in buck converter |
| CN104901407A (en) * | 2015-05-28 | 2015-09-09 | 东风商用车有限公司 | Power source management circuit of commercial vehicle diagnostic protocol adapter |
| KR20190044960A (en) * | 2017-10-23 | 2019-05-02 | 엘에스오토모티브테크놀로지스 주식회사 | USB charger for vehicle |
| CN207967998U (en) * | 2018-03-01 | 2018-10-12 | 深圳市天捷恒大科技发展有限公司 | Double USB onboard chargers |
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