CN206533157U - A kind of USB TYPE C PD bypass charging circuit - Google Patents
A kind of USB TYPE C PD bypass charging circuit Download PDFInfo
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- CN206533157U CN206533157U CN201720035288.5U CN201720035288U CN206533157U CN 206533157 U CN206533157 U CN 206533157U CN 201720035288 U CN201720035288 U CN 201720035288U CN 206533157 U CN206533157 U CN 206533157U
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- power source
- portable power
- adapter
- detection module
- shift switch
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Abstract
The utility model discloses a kind of USB TYPE C PD bypasses charging circuit, including adapter access detection module, TypeC signal lines handover module and output loading access detection module, the adapter access detection module includes adapter and portable power source input, and the output loading access detection module includes portable power source output end and load end；The TypeC signal lines handover module includes MCU and controls CC signal shift switch S1 and the CC signal shift switch S2, the CC signal shift switch S1 and CC signal shift switch S2 that open or close arranged in a crossed manner between portable power source input CC pin and portable power source output end CC pin by MCU.Whether the realization of the USB TYPE C PD bypass functionalitys is detected by Type C Source ends by detecting CC signals the access of Sink equipment, PD communications can actively be initiated and provide suitable, quick, safe power supply grade for Sink by detecting after access, the software difficulty of implementation is greatly reduced, while making stability, compatibility all be increased significantly in terms of also having security.
Description
Technical field
The utility model is related to USB TYPE-C bypass functionality technical fields, specially a kind of USB TYPE-C PD bypasses
Charging circuit.
Background technology
With the development of USB connector, the USB connector USB Type-C of a new generation are proposed.The characteristics of new edition interface
It is that outward appearance is more slim, transmission speed power transmission capacity faster, more powerful and supports the positive and negative plugging function in two sides.USB
Type-C these new features greatly improve traditional USB Consumer's Experience, support blindmate, are coordinating USB Power
Highest 100W power transmission can be provided under the support of Delivery (USB PD) agreement.Because USB Type-C have so
Powerful power transmission capacity, occurs in that a series of use USB Type-C interfaces headed by new edition MACBook on the market
The product such as PC, flat board, mobile phone.In order to meet the function of equipment quick charge, it is necessary to coordinate Type-C PD agreements real
The power transmission of existing different voltage class.Type-C PD agreements can realize highest 20V appointing by stepping of 10mV in theory
Meaning voltage output, but PD voltage class conventional at present is 5V, 9V, 12V, 15V and 20V.
Due to wideling popularize for USB Type-C products, and to the requirements at the higher level of charging rate, Type-C PD are occurred in that
The portable power source of function.The portable power source of Type-C PD functions can provide suitable electricity for different USB Type-C equipment
Pressure, improves the charging rate to equipment.When portable power source input couple in adapter, while the output end of portable power source is accessed
Load, now to then needing the electric power of adapter directly switching to portable power source for supporting the portable power source of bypass functionality
Output end is directly powered for load.The input output end voltage of traditional portable power source is all 5V, is when realizing the function
Fairly simple.But as supporting Type-C PD portable power source its input to follow the power supply energy of the adapter of access
Power chooses a kind of suitable voltage, and the output end of portable power source then can choose different according to the difference of the load of access
Supply voltage.Portable power source can be thus caused to there are a variety of electricity in its input and output end in independent discharge and recharge
Press grade.So the portable power source for all supporting PD functions for this input/output terminal needs to make input when carrying out bypass functionality
The voltage class of output end matches the supply voltage that can just make load obtain safety from adapter end again, otherwise has and causes to bear
Carry the risk damaged.
, can be by software in movement in order to realize that the portable power source bypass functionality of PD functions is all supported in this input and output
Power input and output end carry out PD communications with adapter and load respectively, and voltage and electricity that adapter can be supported are obtained respectively
Stream ability and the receptible voltage class of load end, are then matched by program synthesis and choose what a kind of adapter can be supported,
Load end is also receptible, is capable of the voltage class of fast speed charging.Obtained voltage class is matched finally according to program synthesis
The voltage class that PD acquisition requests arrive the matching is carried out to adapter again, will be to being adapted to while being communicated again with load end again PD
Device application is supplied to load to voltage, completes bypass functionality.PD communications are repeatedly carried out with adapter and load based on this software
Carry out realization of the mode of voltage class adjustment to software and require very high, any failure once communicated is required for extra software
Mistake proofing mechanism is corrected, and stability compare it is relatively low.USB Type-C release also soon, the various adapters of PD functions and
Load will support various suitable all not necessarily according to PD agreement strict implements when making to carry out bypass functionality in this way
Orchestration and load still in the presence of very big probabilistic, cause the reduction of portable power source Products Compatibility.By software repeatedly with
The mode that adapter and load PD communications obtain bypass voltage is high to software requirement in realization, and stability and compatibility all compare
It is low.
Utility model content
The purpose of this utility model is to provide a kind of USB TYPE-C PD bypasses charging circuit, to solve above-mentioned background
The Type-C PD bypasses that are proposed in technology are high to software requirement, enforcement difficulty is big, compatibility than it is relatively low the problem of.
To achieve the above object, the utility model provides following technical scheme：
A kind of USB TYPE-C PD bypass charging circuit, including adapter access detection module, TypeC signal lines are cut
Block and output loading access detection module are changed the mold, the adapter access detection module includes adapter and portable power source is inputted
End, the output loading access detection module includes portable power source output end and load end；The TypeC signal lines switch mould
Block includes MCU and the CC signal shift switch S1 and CC signal shift switch S2 for controlling to open or close by MCU, the CC signals
Switching switch S1 and CC signal shift switch S2 is arranged in a crossed manner in portable power source input CC pin and portable power source output end CC pin
Between.
It is preferred that, the portable power source input is provided with resistance Rd1 and resistance Rd2, and described resistance Rd1 one end connects with MCU
Connect, the other end is connected by switching S5 with portable power source input, described resistance Rd2 one end is connected with MCU, and the other end is by opening
S6 is closed to be connected with portable power source input.
It is preferred that, it is electrically connected between adapter and the portable power source input, and adapter and portable power source are defeated
Enter end and collectively constitute adapter access detection module.
It is preferred that, it is electrically connected between the portable power source output end and load end, and portable power source output end is with bearing
Carry end and collectively constitute output loading access detection module.
Compared with prior art, the beneficial effects of the utility model are：The realization of the USB TYPE-C PD bypass functionalitys by
Whether Type-C Source ends are detected by detecting CC signals the access of Sink equipment, and detecting can actively initiate after access
PD communications provide power supply grade suitably, quickly, safe for Sink, pass through portable power source MCU and peripheral detection module is examined
After adapter and load are measured while accessing, CC signals and the shifting of portable power source input detecting adapter access are each turned off
The CC signals of adapter end, are then directly connected to by the CC signals of dynamic power output end detecting load access by switching switching
Load end, realizes connection of the adapter directly with load, independently of portable power source, and such adapter just necessarily can be successful
PD communications are carried out with load, and receptible, fast and safely charging voltage grade is provided to load, are handled by this scheme
The forward process of PD agreements need not be carried out in adapter end and load end by portable power source, the soft of implementation is greatly reduced
Part difficulty, while making stability, compatibility all be increased significantly in terms of also having security.
Brief description of the drawings
Fig. 1 is the schematic diagram that the utility model bypass functionality is integrally realized；
Fig. 2 is that the utility model adapter accesses detection module schematic diagram；
Fig. 3 is that the utility model output loading accesses detection module schematic diagram.
In figure：1st, adapter access detection module, 2, TypeC signal line handover modules, 3, output loading access detection
Module, 4, adapter, 8, portable power source input, 6, portable power source output end, 7, load end.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Fig. 1-3 are referred to, the utility model provides a kind of technical scheme：A kind of USB TYPE-C PD bypass charging circuit,
Including adapter access detection module 1, TypeC signal lines handover module 2, output loading access detection module 3, adapter 4,
Portable power source input 5, portable power source output end 6 and load end 7, the utility model by adapter access detection module 1,
TypeC signal lines handover module 2 and output loading access detection module 3 are constituted, and adapter access detection module 1 includes adaptation
Device 4 and portable power source input 5, output loading access detection module 3 include portable power source output end 6 and load end 7, described
TypeC signal lines handover module 2 includes MCU and CC signal shift switch S1 and the CC signals for controlling to open or close by MCU
Switching switch S2, the CC signal shift switch S1 and CC signal shift switch S2 is arranged in a crossed manner in portable power source input 5
Between CC pin and the CC pin of portable power source output end 6.
When adapter 4 accesses portable power source input 5, Type-C cables only have one in TypeC signal lines handover module 2
During bar CC signal wires, portable power source needs which CC of the CC signals with portable power source input 5 of Type-C cables identified
Pin is connected, and the CC signal shift switch S1 and CC signal shift switch S2 switches of portable power source input 5 need first to close, and work as
When adapter 4 is connected to portable power source input 5 by Type-C cables, pull-up resistor Rp1 or Rp2 on adapter 4CC pin
It can be connected by the CC signal wires inside Type-C cables with the resistance Rd1 or resistance Rd2 of portable power source input 5, MCU leads to
The voltage crossed on ADC sample detecting portable power source input 5CC1_IN and CC2_IN pin, voltage with by pull-up resistor Rp with drop-down
That CC pin that resistance Rd partial pressure values are consistent is the CC directions that Type-C cable CC signal wires are connected to portable power source, is born
When carrying the access portable power source output end 6 of end 7, CC signal shift switch S1 and the CC signal shift switch of portable power source output end 6
S2 switches need first to close, Rp1 the or Rp2 pull-up resistors of portable power source output end 6 can pass through Type-C cables and load end 7
Resistance Rd1 or resistance Rd2 pull down resistors be connected, portable power source can pass through MCU ADC sample detectings its output end CC pin
On voltage determine that the CC signals of load end 7 are connected to portable power source output end 6 by CC signal wires after Type-C cables
Which CC pin, so that it is determined that the directions of CC connections.
In above-described embodiment, specifically, be electrically connected between adapter 4 and portable power source input 5, and adapter 4
Adapter access detection module 1 is collectively constituted with portable power source input 5, MCU is inputted by ADC sample detectings portable power source
Voltage on 5CC1_IN and CC2_IN pin, if voltage be consistent by pull-up resistor Rp with pull down resistor Rd partial pressure values that
CC pin are the CC directions that TypeC cable CC signal wires are connected to portable power source；
In above-described embodiment, specifically, be electrically connected between portable power source output end 6 and load end 7, and portable power source
Output end 6 and load end 7 collectively constitute output loading access detection module 3, and portable power source can be by MCU ADC sample detectings
Voltage on its output end CC pin moves electricity to determine that the CC signals of load are connected to by CC signal wires after Type-C cables
Which CC pin of source output terminal 6, so that it is determined that the directions of CC connections.
Operation principle：The realization of the utility model USB TYPE-C PD bypass functionalitys by adapter access detection module 1,
TypeC signal lines handover module 2 and output loading access detection module 3 are constituted；
Further, when adapter 4 accesses portable power source input 5, the Type-C cables of connection only have a CC letter
Number line, portable power source needs which CC pin connection of the input of the CC signals of Type-C cables and portable power source identified,
As shown in Figure 2, the CC signal shift switch S1 and CC signal shift switch S2 switches of portable power source input 5 need first to close
Close, when adapter 4 is connected to the input of portable power source by Type-C cables, the pull-up resistor Rp1 on adapter 4CC pin
Or Rp2 can be connected by the CC signal wires inside Type-C cables with the resistance Rd1 or resistance Rd2 of portable power source input 5,
Such a correct Type-C connections are just established, MCU by ADC sample detectings portable power source input 5CC1_IN and
Voltage on CC2_IN pin, if voltage is with by pull-up resistor Rp that CC pin being consistent with pull down resistor Rd partial pressure values
Type-C cable CC signal wires are connected to the CC directions of portable power source；
Further, when load access portable power source output end 6, as shown in Figure 3, the CC of portable power source output end 6
Signal shift switch S1 and CC signal shift switch S2 switches need first to close, on the Rp1 or Rp2 of portable power source output end 6
Pull-up resistor can be connected by Type-C cables with the resistance Rd1 or resistance Rd2 pull down resistors that load, and portable power source can pass through
Voltage on MCU ADC sample detectings its output end CC pin determines that the CC signals of load pass through CC signals after Type-C cables
Line is connected to which CC pin of portable power source output end 6, so that it is determined that the directions of CC connections；
Further, it is in the case where having adapter 4 and loading all accesses, according to upper that portable power source, which enters bypass functionality,
The detecting step in face can clearly judge that adapter 4 is connected to mobile electricity by CC signal wires after the connection of Type-C cables
Which CC pin of source input 5, while can also judge that the CC signal wires of the Type-C cables of output end are connected to movement
Which CC pin of power output end 6, as shown in figure 1, when the input and output end of portable power source all detected CC signals
Behind the direction of line connection, MCU need to disconnect S5, S6, S7 and S8, and Svbus is switched and closed, then according to the CC signals detected
Line closure carries out CC circuits and reconnected, if CC is signally attached to portable power source input 5 by adapter 4 by cable
On CC1_IN pin, CC signals have been also connected on the CC1_OUT pin of portable power source output end 6 by load by cable, then are closed
CC signal shift switch S1 is switched, and disconnects CC signal shift switch S2 switches, and such adapter end will be connected by cable CC lines
It is connected on the CC1_IN pin of portable power source, CC1_OUT pin is then connected to by CC signal shift switch S1 switches again, then
It is connected by the cable CC signal wires for being connected to CC1_OUT pin with load end 7, adapter 4 is established to load independent
Connection；If CC is signally attached on the CC2_IN pin of portable power source input 5 by adapter 4 by cable, load passes through line
CC signals have been also connected on the CC2_OUT pin of portable power source output end 6 by cable, then close CC signal shift switch S1 switches,
Disconnect CC signal shift switch S2 switches；Otherwise, CC signal shift switch S1 switches should be disconnected, CC signal shift switch is closed
S2 is switched, even if the CC signal wires of so input cable are connected to the CC1_IN pin of portable power source, output end cable CC believes
Number be connected to CC2_OUT or input cable CC signal wires be connected to portable power source CC2_IN pin and output line
Cable CC has been signally attached to CC1_OUT also can make correct by CC signal shift switch S1 and CC signal shift switch S2 switches
CC connections switching, it is ensured that the correct connection of the CC in Type-C connection procedures, the CC signal wires of adapter end cable can be made
Connected with the CC signal wires of the cable of load end 7, the pull-up resistor inside adapter 4 will be set up with the pull down resistor of load end 7
Connection, now adapter 4 can also communicate with load progress PD applies for suitable bypass voltage to load, for the defeated of portable power source
Going out end needs to be supported the EMark cables of output end, also needs to the side according to the load end 7CC signals connection detected
Powered to VCONN is configured to it, if the access of the cable CC signals of load end 7 is on the CC1_OUT pin of portable power source load end 7,
Need to switch off S3, S4 is switched and closed, CC2_OUT pin is powered as VCONN to EMark cables；If the line of load end 7
Cable CC signals are accessed on the CC2_OUT pin of portable power source load end 7, then need to switch off S4, and S3 is switched and closed, is made
CC1_OUT pin are powered as VCONN to EMark cables, and all switch switchings are all the input and output by MCU by detecting
It is unified after the comprehensive descision in end line cable access direction to carry out switch scheduling to ensure the correct connection of circuit, by CC order wires
The disconnection on road reconnect can allow the adapter 4 of access portable power source and load is independent and portable power source and carry out PD communications, with
According to the different adapters 4 of access, safe and efficient power supply is arrived in application when enabling to be supported on bypass.
In summary, general principle of the present utility model, principal character and advantage has been shown and described above.The industry
Technical staff it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification only
It is to illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model also has
Various changes and modifications, these changes and improvements are both fallen within the range of claimed the utility model.The utility model requirement
Protection domain is defined by appended claims and its effect thing.
Claims (4)
1. a kind of USB TYPE-C PD bypass charging circuit, it is characterised in that：Including adapter access detection module, TypeC letters
Number circuit switch module and output loading access detection module, the adapter access detection module include adapter and mobile electricity
Source input, the output loading access detection module includes portable power source output end and load end；The TypeC signal lines
Handover module include MCU and control to open by MCU or closure CC signal shift switch S1 and CC signal shift switch S2, it is described
CC signal shift switch S1 and CC signal shift switch S2 is arranged in a crossed manner to be exported in portable power source input CC pin and portable power source
Between the CC pin of end.
2. a kind of USB TYPE-C PD bypasses charging circuit according to claim 1, it is characterised in that：The mobile electricity
Source input is provided with resistance Rd1 and resistance Rd2, and described resistance Rd1 one end is connected with MCU, and the other end is by switching S5 and movement
Power input is connected, and described resistance Rd2 one end is connected with MCU, and the other end is connected by switching S6 with portable power source input.
3. a kind of USB TYPE-C PD bypasses charging circuit according to claim 1, it is characterised in that：The adapter
It is electrically connected between portable power source input, and adapter collectively constitutes adapter access detection with portable power source input
Module.
4. a kind of USB TYPE-C PD bypasses charging circuit according to claim 1, it is characterised in that：The mobile electricity
It is electrically connected between source output terminal and load end, and portable power source output end collectively constitutes output loading access inspection with load end
Survey module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720035288.5U CN206533157U (en) | 2017-01-12 | 2017-01-12 | A kind of USB TYPE C PD bypass charging circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720035288.5U CN206533157U (en) | 2017-01-12 | 2017-01-12 | A kind of USB TYPE C PD bypass charging circuit |
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| Publication Number | Publication Date |
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| CN206533157U true CN206533157U (en) | 2017-09-29 |
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| CN201720035288.5U Active CN206533157U (en) | 2017-01-12 | 2017-01-12 | A kind of USB TYPE C PD bypass charging circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549463A (en) * | 2017-01-12 | 2017-03-29 | 东莞市太业电子股份有限公司 | A kind of USB TYPE C PD bypass charging circuit |
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2017
- 2017-01-12 CN CN201720035288.5U patent/CN206533157U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549463A (en) * | 2017-01-12 | 2017-03-29 | 东莞市太业电子股份有限公司 | A kind of USB TYPE C PD bypass charging circuit |
| CN106549463B (en) * | 2017-01-12 | 2023-09-26 | 东莞市太业电子股份有限公司 | USB TYPE-C PD bypass charging circuit |
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