CN109494820A - A kind of USB output fast charge protocol-compliant circuit - Google Patents

A kind of USB output fast charge protocol-compliant circuit Download PDF

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Publication number
CN109494820A
CN109494820A CN201710813829.7A CN201710813829A CN109494820A CN 109494820 A CN109494820 A CN 109494820A CN 201710813829 A CN201710813829 A CN 201710813829A CN 109494820 A CN109494820 A CN 109494820A
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China
Prior art keywords
voltage
resistance
control unit
unit
resistor
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CN201710813829.7A
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Chinese (zh)
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CN109494820B (en
Inventor
胡成才
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Shenzhen Source Of Power Technology Co Ltd
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Shenzhen Source Of Power Technology Co Ltd
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Classifications

    • H02J7/0026—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Power Sources (AREA)

Abstract

The invention discloses a kind of USB to export fast charge protocol-compliant circuit, comprising: USB input, including VBUS pin, D- pin, D+ pin and GND pin；Micro-control unit, operating voltage are 3.3V to 5.5V；Overload protection unit, first resistor of connecting between D- and D+ pin and micro-control unit and second resistance；Voltage regulator circuit unit, one end are connected with VBUS, and the other end is connected with for control unit；Voltage sampling unit, one end are connected with VDD, and the other end is connected with for control unit, including resistance and capacitor in parallel with a resistor；Voltage detection unit, one end are connected with VBUS, and the other end is connected with for control unit, including resistance and capacitor in parallel with a resistor；The voltage of VBUS is initial voltage 5V.By micro-control unit controls sampled voltage unit, cooperate voltage regulator circuit unit and voltage detecting circuit to realize the compatible adaptation of 3.6V to 20V.

Description

A kind of USB output fast charge protocol-compliant circuit
Technical field
The present invention relates to charger field, especially a kind of USB exports fast charge protocol-compliant circuit.
Background technique
With the fast development of electronic product, electronic components are also constantly updating, however, the middle charger of accessory It is that all electronic products are essential, each electronic product has the charging voltage and adaptation parameter of oneself, so that charger Can not be general, A mouthfuls of QC3.0USB traditional outputs can only adapt to most mobile phones at present and adapt to, and not catch up with electronics skill much The step of art development, the port of output are difficult unification.
Summary of the invention
It is an object of the present invention to which exporting fast charge protocol-compliant circuit by providing a kind of USB reaches common Q C3.0 A mouthfuls of bases of CLASS B standard (3.6V~20V) USB, compatible A mouthfuls of a USB can give any one in the case where thread-changing Electric appliance charging of a voltage between 3.6V to 20V.
To reach this purpose, the following technical schemes are provided:
A kind of USB output fast charge protocol-compliant circuit, comprising:
USB input, including VBUS pin, D- pin, D+ pin and GND pin；
Micro-control unit, for controlling entire circuit, operating voltage is 3.3V to 5.5V；
Overload protection unit, first resistor of connecting between D- and D+ pin and micro-control unit and second resistance；
Voltage regulator circuit unit, one end are connected with VBUS, and the other end is connected with for control unit；
Voltage sampling unit, one end are connected with VDD, and the other end is connected with for control unit, including resistance and with resistance simultaneously The capacitor of connection；
Voltage detection unit, one end are connected with VBUS, and the other end is connected with for control unit, including resistance and with resistance simultaneously The capacitor of connection；
The voltage of VBUS is initial voltage 5V.
Preferably, the voltage sampling unit is circumscribed with parallel resistance over the ground.
Preferably, the parallel resistance over the ground one terminates the end PD, comprising: R9、R10、R11And R12, R9Resistance value is 15K Ω couple Answering voltage is 9V, R10Resistance value is that 9.1K Ω corresponding voltage is 12V, R11Resistance value is that 6.2K Ω corresponding voltage is 15V, R12Resistance value is 4.2K Ω corresponding voltage is 20V.
Preferably, the voltage sampling unit includes 3rd resistor and the 4th resistance, the 4th resistor coupled in parallel third electricity Hold.
Preferably, the 3rd resistor resistance value is 24K Ω, and the 4th resistance is 22K Ω, the third capacitor For 10nF.
Preferably, it is 5.1K Ω that the overload protecting circuit first resistor, which is arranged on D- route, and the second resistance is set It sets on D+ route as 5.1K Ω.
Preferably, the voltage detection unit includes the 5th resistance and the 6th resistance, the 4th capacitor of the 6th resistor coupled in parallel.
Preferably, the 5th resistance is 75K Ω, and the 6th resistance is 10K Ω, and the 4th capacitor is 1nF.
The invention has the benefit that by micro-control unit controls sampled voltage unit, cooperation voltage regulator circuit unit and Voltage detecting circuit realizes the compatible adaptation of 3.6V to 20V.
Detailed description of the invention
Fig. 1 is one circuit diagram of the embodiment of the present invention；
Fig. 2 is two circuit diagram of the embodiment of the present invention.
Specific embodiment
The present invention is described in detail with reference to embodiments.
Embodiment one
It is as shown in Figure 1 the present embodiment circuit diagram, comprising:
USB input, including VBUS pin, D- pin, D+ pin and GND pin；Micro-control unit, it is entire for controlling Circuit, operating voltage are 3.3V to 5.5V；Overload protection unit, the first electricity of connecting between D- and D+ pin and micro-control unit Resistance and second resistance；Voltage regulator circuit unit, one end are connected with VBUS, and the other end is connected with for control unit；Voltage sampling unit, One end is connected with VDD, and the other end is connected with for control unit, including resistance and capacitor in parallel with a resistor；Voltage detection unit, One end is connected with VBUS, and the other end is connected with for control unit, including resistance and capacitor in parallel with a resistor；The voltage of VBUS For initial voltage 5V.
Wherein, voltage sampling unit includes 3rd resistor R3With the 4th resistance R4, the 4th resistance R4Third capacitor in parallel C3。
Wherein, 3rd resistor R3Resistance value is 24K Ω, the 4th resistance R4Resistance value is 22K Ω, third capacitor C3For 10nF.
Wherein, overload protecting circuit first resistor R1Be arranged on D- route is 5.1K Ω, second resistance R2It is arranged in D+ line Road is 5.1K Ω.
Wherein, voltage detection unit includes the 5th resistance R5With the 6th resistance R6, the 6th resistance R6The 4th capacitor C of parallel connection4。
Wherein, the 5th resistance R5Resistance value is 75K Ω, the 6th resistance R6Resistance value is 10K Ω, the 4th capacitor C4For 1nF.
The course of work: plugging USB1 and be connected with the USB female seat with QC3.0, and voltage of VBUS is initial voltage 5V, at this time low pressure Poor three-terminal voltage-stabilizing IC, Vout are also corresponding 5V voltage output, are powered to miniature control unit, and exporting VBUS at this time is 5V voltage, Doing foundation according to FB voltage-to-ground after energization come the 1,2 pins i.e. end D- for judging the miniature control unit of the output and the end D+ voltage is How much, corresponding voltage is the standard agreement voltage of QC3.0 at this time, makes VBUS according to the corresponding voltage of standard output of QC3.0, comes Reach compatibility.
Embodiment two
The present embodiment main distinction is voltage sampling unit, the present embodiment voltage sampling unit packet compared with embodiment one Include the R being the same as example 13、R4And C3It further include external parallel resistance R over the ground9、R10、R11And R12, according to different voltages Demand, correspondence connect different resistance.R9Resistance value is that 15K Ω corresponding voltage is 9V, R10Resistance value is that 9.1K Ω corresponding voltage is 12V, R11Resistance value is that 6.2K Ω corresponding voltage is 15V, R12Resistance value is that 4.2K Ω corresponding voltage is 20V.
Wherein, parallel resistance one terminates the end PD over the ground.
Wherein, calculation formula are as follows:
RAndFor corresponding parallel resistance, that is, R over the ground9Or R10Or R11Or R12。
The course of work: plugging USB1 and be connected with the USB female seat with QC3.0, and voltage of VBUS is initial voltage 5V, at this time low pressure Poor three-terminal voltage-stabilizing IC, Vout are also corresponding 5V voltage output, are powered to miniature control unit, and exporting VBUS at this time is 5V voltage, Doing foundation according to FB voltage-to-ground after energization come the 1,2 pins i.e. end D- for judging the miniature control unit of the output and the end D+ voltage is How much, corresponding voltage is the standard agreement voltage of QC3.0 at this time, makes VBUS according to the corresponding voltage of standard output of QC3.0, comes Reach compatibility.If FB foot is the PD voltage signal changed at this time, voltage value corresponding to each PD resistance can be corresponded to, by QC3.0 standard output voltage of VBUS reaches PD voltage output standard.

Claims (8)

1. a kind of USB exports fast charge protocol-compliant circuit characterized by comprising
USB input, including VBUS pin, D- pin, D+ pin and GND pin；
Micro-control unit, for controlling entire circuit, operating voltage is 3.3V to 5.5V；
Overload protection unit, first resistor of connecting between D- and D+ pin and micro-control unit and second resistance；
Voltage regulator circuit unit, one end are connected with VBUS, and the other end is connected with for control unit；
Voltage sampling unit, one end are connected with VDD, and the other end is connected with for control unit, including resistance and in parallel with a resistor Capacitor；
Voltage detection unit, one end are connected with VBUS, and the other end is connected with for control unit, including resistance and in parallel with a resistor Capacitor；
The voltage of VBUS is initial voltage 5V.
2. a kind of USB according to claim 1 exports fast charge protocol-compliant circuit, which is characterized in that the voltage sample Unit is circumscribed with parallel resistance over the ground.
3. a kind of USB according to claim 2 exports fast charge protocol-compliant circuit, which is characterized in that it is described over the ground simultaneously Join resistance one and terminate the end PD, comprising: R9、R10、R11And R12, R9Resistance value is that 15K Ω corresponding voltage is 9V, R10Resistance value is 9.1K Ω Corresponding voltage is 12V, R11Resistance value is that 6.2K Ω corresponding voltage is 15V, R12Resistance value is that 4.2K Ω corresponding voltage is 20V.
4. a kind of USB according to claim 1 exports fast charge protocol-compliant circuit, which is characterized in that the voltage sample Unit includes 3rd resistor and the 4th resistance, the 4th resistor coupled in parallel third capacitor.
5. a kind of USB according to claim 4 exports fast charge protocol-compliant circuit, which is characterized in that the third electricity Resistance resistance value is 24K Ω, and the 4th resistance is 22K Ω, and the third capacitor is 10nF.
6. a kind of USB according to claim 1 exports fast charge protocol-compliant circuit, which is characterized in that the overload protection It is 5.1K Ω that circuit first resistor, which is arranged on D- route, and it is 5.1K Ω that the second resistance, which is arranged on D+ route,.
7. a kind of USB according to claim 1 exports fast charge protocol-compliant circuit, which is characterized in that the voltage inspection Surveying unit includes the 5th resistance and the 6th resistance, the 4th capacitor of the 6th resistor coupled in parallel.
8. a kind of USB according to claim 1 exports fast charge protocol-compliant circuit, which is characterized in that the 5th resistance Resistance value is 75K Ω, and the 6th resistance is 10K Ω, and the 4th capacitor is 1nF.
CN201710813829.7A 2017-09-11 2017-09-11 USB output quick charging protocol compatible circuit Active CN109494820B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201710813829.7A CN109494820B (en) 2017-09-11 2017-09-11 USB output quick charging protocol compatible circuit

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CN109494820A true CN109494820A (en) 2019-03-19
CN109494820B CN109494820B (en) 2022-09-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115299773A (en) * 2022-08-08 2022-11-08 成都探寻家科技有限公司 Power control method and electric heating water cup
US11689041B2 (en) 2020-04-14 2023-06-27 Siliconch Systems Pvt Ltd System and method for detecting electrical connection and disconnection on USB Type-A charging port

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203800644U (en) * 2014-02-07 2014-08-27 鲁慧锋 Charging Po and charging device
CN105527527A (en) * 2016-01-26 2016-04-27 江苏才易电子科技有限公司 Intelligent detector based on rapid charger and testing method
CN105676029A (en) * 2016-01-26 2016-06-15 江苏才易电子科技有限公司 Intelligent detector compatible with rapid charger and test method of detector
CN106654742A (en) * 2016-12-27 2017-05-10 歌尔科技有限公司 USB hub supporting rapid charge
CN107069912A (en) * 2017-04-21 2017-08-18 张家港市佰瑞普电器科技有限公司 A kind of USB interface-based adaptive quick-charging circuit
CN206452162U (en) * 2017-02-24 2017-08-29 深圳派立通科技有限公司 A kind of QC3.0 of portable power source fills charging circuit soon

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203800644U (en) * 2014-02-07 2014-08-27 鲁慧锋 Charging Po and charging device
CN105527527A (en) * 2016-01-26 2016-04-27 江苏才易电子科技有限公司 Intelligent detector based on rapid charger and testing method
CN105676029A (en) * 2016-01-26 2016-06-15 江苏才易电子科技有限公司 Intelligent detector compatible with rapid charger and test method of detector
CN106654742A (en) * 2016-12-27 2017-05-10 歌尔科技有限公司 USB hub supporting rapid charge
CN206452162U (en) * 2017-02-24 2017-08-29 深圳派立通科技有限公司 A kind of QC3.0 of portable power source fills charging circuit soon
CN107069912A (en) * 2017-04-21 2017-08-18 张家港市佰瑞普电器科技有限公司 A kind of USB interface-based adaptive quick-charging circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11689041B2 (en) 2020-04-14 2023-06-27 Siliconch Systems Pvt Ltd System and method for detecting electrical connection and disconnection on USB Type-A charging port
US11936231B2 (en) 2020-04-14 2024-03-19 Siliconch Systems Pvt Ltd System and method for detecting electrical connection and disconnection on USB type-A charging port
CN115299773A (en) * 2022-08-08 2022-11-08 成都探寻家科技有限公司 Power control method and electric heating water cup

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