Type-C charging line circuit with DC output interface

Abstract

The utility model provides a Type-C charging line circuit with a DC output interface, which comprises a Type-C male head input circuit, the input end of the Type-C male head input circuit can be connected with a charging head, the output end of the Type-C male head input circuit is in power supply connection with a main control circuit and a power supply voltage regulation circuit, and the output end of the power supply voltage regulation circuit is connected with the input end of a Type-C male head output circuit. The output end of the Type-C male head output circuit can be connected with Type-C interface intelligent electronic equipment, the main control circuit is connected with the power supply voltage adjusting circuit, the Type-C male head output circuit and the DC interface output circuit, and the output end of the DC interface output circuit can be connected with DC interface intelligent electronic equipment. The Type-C charging line has the beneficial effects that one Type-C charging line not only can charge intelligent electronic equipment with a Type-C interface, but also can charge intelligent electronic equipment with a DC interface at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of circuits, and in particular to a Type-C charging line circuit provided with a DC output interface. Background Art

[0002] The Type-C interface is a USB connection interface that can be inserted regardless of the front or back. It is approximately 8.3mm×2.5mm in size and supports USB standard charging, data transmission, display output and other functions like other interfaces. Type-C was developed by the USB Implementers Forum and became popular after gaining support from Apple, Google, Intel, Microsoft and other manufacturers in 2014. The Type-C charging cable is a charging cable that uses the Type-C interface and has the function of blind insertion from both sides. Compared with traditional charging cables, it has faster transmission speeds and stronger security.

[0003] The DC interface is an interface that effectively outputs a fixed voltage after converting the input voltage. It consists of a horizontal socket, a vertical socket, an insulating base, a fork-shaped contact spring, and a directional keyway. The two fork-shaped contact springs are located in the center of the base and are arranged vertically and horizontally without connecting to each other. It is widely used in products such as mobile phones, MP3, digital cameras, and portable media players. One end of the DC interface fork-shaped contact spring is a wiring port, which is exposed on the top surface of the base cylinder for connecting the input power cord or cable. The other end of the fork-shaped contact spring is composed of two elastic arms interconnected by the base, which are set in the insulating base socket in the direction of the DC interface insertion, and are used to supply the equipment to make it work normally. The DC interface can adopt three types of control according to needs. The PWM control type has high efficiency and good output voltage ripple and noise. The PFM control type has the advantage of low power consumption even when used for a long time, especially when the load is small. The PWM / PFM conversion type implements PFM control when the load is small, and automatically switches to PWM control when the load is heavy.

[0004] Nowadays, many smart electronic devices are equipped with Type-C charging cables, which not only have the function of blind plugging on both sides, but also have faster transmission speed and stronger security. Common smart electronic devices include mobile phones, computers, tablets, speakers, digital cameras, portable media players and various toys. However, since Type-C charging cables are relatively new device interfaces, some older smart electronic devices do not have Type-C interfaces. The most common interface for these older smart electronic devices is DC interface, such as laptops, mobile phones, digital cameras, portable media players and other products. Although there are few DC interfaces on mobile phones used in daily life, many devices such as laptops and digital cameras with DC interfaces are still frequently used in life. Charging these smart electronic devices with DC interfaces is a hassle. It is very troublesome to carry a power adapter with a DC interface with you, which is very troublesome and the user experience is not good enough. However, Type-C charging cables can be seen everywhere in life, so if Type-C charging cables can also charge these smart electronic devices with DC interfaces, it should be very convenient. Utility Model Content

[0005] In order to solve the problems in the prior art, the utility model provides a Type-C charging cable circuit with a DC output interface. By arranging a Type-C male input circuit, a power supply voltage adjustment circuit, a main control circuit, a Type-C male output circuit and a DC interface output circuit that cooperate with each other in the Type-C charging cable circuit with a DC output interface, it is possible to realize that one Type-C charging cable can charge both a smart electronic device with a Type-C interface and a smart electronic device with a DC interface at the same time, thereby solving the problem in the prior art that charging a smart electronic device with a DC interface requires carrying an additional power adapter with a DC interface, which is very troublesome.

[0006] The utility model provides a Type-C charging line circuit with a DC output interface, comprising a Type-C male input circuit, a power supply voltage adjustment circuit, a main control circuit, a Type-C male output circuit and a DC interface output circuit, wherein the input end of the Type-C male input circuit can be connected to a charging head, the output end of the Type-C male input circuit is connected to the main control circuit and the power supply voltage adjustment circuit for power supply, the output end of the power supply voltage adjustment circuit is connected to the input end of the Type-C male output circuit, the output end of the Type-C male output circuit can be connected to a Type-C interface intelligent electronic device, the output end of the main control circuit is connected to the input end of the power supply voltage adjustment circuit, the input end of the Type-C male output circuit, and the input end of the DC interface output circuit, the output end of the DC interface output circuit can be connected to a DC interface intelligent electronic device, and the main control circuit can adjust and distribute the output power of the Type-C male output circuit and the DC interface output circuit according to the input power of the Type-C male input circuit.

[0007] The utility model is further improved, the Type-C male input circuit is provided with an interface CN1, a voltage adjustment chip U1 and a resistor R1, the output end of the interface CN1 is provided with 16 pins, the voltage adjustment chip U1 is provided with 3 pins, the A4, B9, B4, A9 pins of the interface CN1 are connected to one end of the resistor R1 and the input end of the power supply voltage adjustment circuit, the other end of the resistor R1 is connected to the 3rd pin of the voltage adjustment chip U1, and the 2nd pin of the voltage adjustment chip U1 is connected to the input end of the main control circuit.

[0008] The utility model is further improved, the main control circuit is provided with a main control chip U2, a resistor R9, a resistor R10, a resistor R14, a resistor R15, a resistor R16, a diode D1, a field effect transistor Q3 and a transistor Q4, wherein the main control chip U2 is provided with 20 pins, the 6th pin of the main control chip U2 is connected to the 2nd pin of the voltage adjustment chip U1, the 10th pin of the main control chip U2 is connected to one end of the resistor R9, the 11th pin of the main control chip U2 is connected to one end of the resistor R10, the other end of the resistor R9 is connected to the other end of the resistor R10 and the A5th pin of the interface CN1, the 8th pin of the main control chip U2 is connected to the base of the transistor Q4, and the The collector of the transistor Q4 is connected to one end of the resistor R16, the other end of the resistor R16 is connected to the gate of the field effect transistor Q3 and one end of the resistor R15, the other end of the resistor R15 is connected to the A4 pin of the interface CN1 and the source of the field effect transistor Q3, the drain of the field effect transistor Q3 is connected to the cathode of the diode D1 and the input end of the DC interface output circuit, the anode of the diode D1 is connected to one end of the resistor R14 and the 17th pin of the main control chip U2, the other end of the resistor R14 is connected to the 2nd pin of the voltage adjustment chip U1, the 19th pin of the main control chip U2 is connected to the input end of the DC interface output circuit, and the emitter of the transistor Q4 is grounded.

[0009] The utility model is further improved, the main control circuit is further provided with a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R11, a resistor R12, a resistor R13, a field effect transistor Q1 and a transistor Q2, wherein the 16th pin of the main control chip U2 is connected to one end of the resistor R11, the 14th pin of the main control chip U2 is connected to one end of the resistor R12, the 7th pin of the main control chip U2 is connected to one end of the resistor R13, the other end of the resistor R11 is connected to the other end of the resistor R12, the other end of the resistor R13, and the input end of the Type-C male output circuit, the 2nd pin of the main control chip U2 is connected to the base of the transistor Q2, the collector of the transistor Q2 is connected to one end of the resistor R3, and the resistor R The other end of 3 is connected to the gate of the field effect tube Q1 and one end of the resistor R2, the other end of the resistor R2 is connected to the A4 pin of the interface CN1, the source of the field effect tube Q1, and one end of the resistor R5, the drain of the field effect tube Q1 is connected to one end of the resistor R4 and the input end of the Type-C male output circuit, the other end of the resistor R5 is connected to one end of the resistor R6 and the 20th pin of the main control chip U2, the 18th pin of the main control chip U2 is connected to one end of the resistor R8, the 13th pin of the main control chip U2 is connected to one end of the resistor R7, the other end of the resistor R8 is connected to the other end of the resistor R7 and the input end of the power supply voltage adjustment circuit, and the emitter of the transistor Q2, the other end of the resistor R4, and the other end of the resistor R6 are grounded.

[0010] The utility model is further improved, the power supply voltage adjustment circuit is provided with a voltage adjustment chip U3 and an inductor L1, the voltage adjustment chip U3 is provided with 6 pins, the 3rd pin of the voltage adjustment chip U3 is connected to the other end of the resistor R8 and the other end of the resistor R7, the 4th pin of the voltage adjustment chip U3 is connected to the 3rd pin of the main control chip U2, the 5th pin of the voltage adjustment chip U3 is connected to the A4th pin of the interface CN1, the 6th pin of the voltage adjustment chip U3 is connected to one end of the inductor L1, and the other end of the inductor L1 is connected to the input end of the Type-C male output circuit.

[0011] The utility model is further improved, the Type-C male output circuit is provided with an interface CN2, the input end of the interface CN2 is provided with 16 pins, the A4, B9, B4, A9 pins of the interface CN2 are connected to the other end of the inductor L1, the drain of the field effect transistor Q1, and one end of the resistor R4, and the A5 pin of the interface CN2 is connected to the other end of the resistor R11, the other end of the resistor R12, and the other end of the resistor R13.

[0012] The utility model is further improved, the DC interface output circuit is provided with a DC output interface CN3, a resistor R17, a resistor R18, a resistor R19 and a capacitor C4, the input end of the DC output interface CN3 is provided with 2 pins, the first pin of the DC output interface CN3 is connected to the drain of the field effect tube Q3 and the negative electrode of the diode D1, the second pin of the DC output interface CN3 is connected to one end of the resistor R17 and one end of the resistor R18, the other end of the resistor R18 is connected to one end of the resistor R19 and one end of the capacitor C4, the other end of the resistor R19 is connected to the second pin of the voltage adjustment chip U1, and the other end of the capacitor C4 and the other end of the resistor R17 are grounded.

[0013] The utility model is further improved, and the model of the voltage adjustment chip U1 is LDO-3.3V.

[0014] The utility model is further improved, and the model of the main control chip U2 is CP6622B.

[0015] The utility model is further improved, and the model of the voltage adjustment chip U3 is SK6632 or AS2320.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: a Type-C charging line circuit with a DC output interface is provided, and a Type-C male input circuit, a power supply voltage adjustment circuit, a main control circuit, a Type-C male output circuit and a DC interface output circuit that cooperate with each other are arranged in the Type-C charging line circuit with a DC output interface. The main control circuit can adjust and distribute the output power of the Type-C male output circuit and the DC interface output circuit according to the input power of the Type-C male input circuit, so that one Type-C charging line can charge both smart electronic devices with a Type-C interface and smart electronic devices with a DC interface at the same time. It is very convenient to carry and use, and has high safety, which meets people's use needs and improves people's use experience, and solves the problem in the prior art that charging smart electronic devices with a DC interface requires carrying an additional power adapter with a DC interface, which is very troublesome. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a principle block diagram of a Type-C charging cable circuit with a DC output interface of the utility model;

[0019] Figure 2 The utility model is a circuit diagram of a Type-C charging cable circuit with a DC output interface. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present utility model; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present utility model or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0023] like Figure 1-2As shown, the utility model provides a Type-C charging line circuit with a DC output interface, including a Type-C male input circuit, a power supply voltage adjustment circuit, a main control circuit, a Type-C male output circuit and a DC interface output circuit. The input end of the Type-C male input circuit can be connected to a charging head, the output end of the Type-C male input circuit is connected to the main control circuit and the power supply voltage adjustment circuit for power supply, the output end of the power supply voltage adjustment circuit is connected to the input end of the Type-C male output circuit, the output end of the Type-C male output circuit can be connected to a Type-C interface intelligent electronic device, the output end of the main control circuit is connected to the input end of the power supply voltage adjustment circuit, the input end of the Type-C male output circuit, and the input end of the DC interface output circuit, and the output end of the DC interface output circuit can be connected to a DC interface intelligent electronic device. In this embodiment, the main control circuit can adjust and allocate the output power of the Type-C male output circuit and the DC interface output circuit according to the input power of the Type-C male input circuit, so that one Type-C charging cable can charge both smart electronic devices with Type-C interface and smart electronic devices with DC interface at the same time. It is very convenient to carry and use, and has high safety, which meets people's usage needs and improves people's usage experience.

[0024] like Figure 2 As shown, the Type-C male input circuit is provided with an interface CN1, a voltage adjustment chip U1 and a resistor R1. The output end of the interface CN1 is provided with 16 pins. The model of the voltage adjustment chip U1 is LDO-3.3V. The voltage adjustment chip U1 is provided with 3 pins. The A4, B9, B4, and A9 pins of the interface CN1 are connected to one end of the resistor R1 and the input end of the power supply voltage adjustment circuit. The other end of the resistor R1 is connected to the third pin of the voltage adjustment chip U1. The second pin of the voltage adjustment chip U1 is connected to the input end of the main control circuit. In this embodiment, the Type-C male input circuit is used to connect the charging head to power the power supply voltage adjustment circuit and the main control circuit.

[0025] like Figure 2As shown, the main control circuit is provided with a main control chip U2, a resistor R9, a resistor R10, a resistor R14, a resistor R15, a resistor R16, a diode D1, a field effect transistor Q3 and a transistor Q4. The model of the main control chip U2 is CP6622B. The main control chip U2 is provided with 20 pins. The 6th pin of the main control chip U2 is connected to the 2nd pin of the voltage adjustment chip U1, the 10th pin of the main control chip U2 is connected to one end of the resistor R9, the 11th pin of the main control chip U2 is connected to one end of the resistor R10, the other end of the resistor R9 is connected to the other end of the resistor R10 and the A5th pin of the interface CN1, the 8th pin of the main control chip U2 is connected to the base of the transistor Q4, and the transistor The collector of transistor Q4 is connected to one end of resistor R16, the other end of resistor R16 is connected to the gate of field effect transistor Q3 and one end of resistor R15, the other end of resistor R15 is connected to pin A4 of interface CN1 and the source of field effect transistor Q3, the drain of field effect transistor Q3 is connected to the cathode of diode D1 and the input end of DC interface output circuit, the anode of diode D1 is connected to one end of resistor R14 and pin 17 of main control chip U2, the other end of resistor R14 is connected to pin 2 of voltage adjustment chip U1, pin 19 of main control chip U2 is connected to the input end of DC interface output circuit, and the emitter of transistor Q4 is grounded; the main control circuit is also provided with resistors R2, R3, Resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R11, resistor R12, resistor R13, field effect transistor Q1 and transistor Q2, the 16th pin of the main control chip U2 is connected to one end of the resistor R11, the 14th pin of the main control chip U2 is connected to one end of the resistor R12, the 7th pin of the main control chip U2 is connected to one end of the resistor R13, the other end of the resistor R11 is connected to the other end of the resistor R12, the other end of the resistor R13, and the input end of the Type-C male output circuit, the 2nd pin of the main control chip U2 is connected to the base of the transistor Q2, the collector of the transistor Q2 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the field effect transistor Q The gate of transistor 1 is connected to one end of resistor R2, the other end of resistor R2 is connected to pin A4 of interface CN1, the source of field effect transistor Q1, and one end of resistor R5, the drain of field effect transistor Q1 is connected to one end of resistor R4 and the input end of Type-C male output circuit, the other end of resistor R5 is connected to one end of resistor R6 and pin 20 of main control chip U2, the 18th pin of main control chip U2 is connected to one end of resistor R8, the 13th pin of main control chip U2 is connected to one end of resistor R7, the other end of resistor R8 is connected to the other end of resistor R7 and the input end of power supply voltage adjustment circuit, the emitter of transistor Q2, the other end of resistor R4, and the other end of resistor R6 are grounded.In this embodiment, the main control circuit is used to adjust and distribute the output power of the Type-C male output circuit and the DC interface output circuit according to the input power of the Type-C male input circuit.

[0026] like Figure 2 As shown, the power supply voltage adjustment circuit is provided with a voltage adjustment chip U3 and an inductor L1. The model of the voltage adjustment chip U3 is SK6632 or AS2320. The voltage adjustment chip U3 is provided with 6 pins. The 3rd pin of the voltage adjustment chip U3 is connected to the other end of the resistor R8 and the other end of the resistor R7. The 4th pin of the voltage adjustment chip U3 is connected to the 3rd pin of the main control chip U2. The 5th pin of the voltage adjustment chip U3 is connected to the A4th pin of the interface CN1. The 6th pin of the voltage adjustment chip U3 is connected to one end of the inductor L1. The other end of the inductor L1 is connected to the input end of the Type-C male output circuit. In this embodiment, the power supply voltage adjustment circuit is used to supply power to the Type-C male output circuit.

[0027] like Figure 2 As shown, the Type-C male output circuit is provided with an interface CN2, and the input end of the interface CN2 is provided with 16 pins. The A4, B9, B4, and A9 pins of the interface CN2 are connected to the other end of the inductor L1, the drain of the field effect transistor Q1, and one end of the resistor R4. The A5 pin of the interface CN2 is connected to the other end of the resistor R11, the other end of the resistor R12, and the other end of the resistor R13. In this embodiment, the Type-C male output circuit is used to charge Type-C interface intelligent electronic devices.

[0028] like Figure 2 As shown, the DC interface output circuit is provided with a DC output interface CN3, a resistor R17, a resistor R18, a resistor R19 and a capacitor C4, and the input end of the DC output interface CN3 is provided with two pins, the first pin of the DC output interface CN3 is connected to the drain of the field effect tube Q3 and the negative electrode of the diode D1, the second pin of the DC output interface CN3 is connected to one end of the resistor R17 and one end of the resistor R18, the other end of the resistor R18 is connected to one end of the resistor R19 and one end of the capacitor C4, the other end of the resistor R19 is connected to the second pin of the voltage adjustment chip U1, and the other end of the capacitor C4 and the other end of the resistor R17 are grounded. In this embodiment, the DC interface output circuit is used to charge an intelligent electronic device with a DC interface.

[0029] In this embodiment, the main control chip U2 reads the power of the charger, the number of voltage segments, and the current corresponding to each voltage segment through the Type-C male input circuit via the resistor R9 and resistor R10 connected to the 10th and 11th pins. If the charger power is less than 65W, the main control chip U2 prohibits the DC interface output circuit from outputting. The 8th pin of the main control chip U2 outputs a low level, and the transistor Q4 is turned off, which is equivalent to one end of the resistor R16 being suspended. The resistor R15 is pulled up from VIN to the gate of the field effect transistor Q3. The gate of the field effect transistor Q3 is at a high potential approximately equal to VIN, and the field effect transistor Q3 remains in a closed state. Only the Type-C male output circuit is allowed to output. The resistors R11, R12, and R13 connected to the 7th, 14th, and 16th pins of the main control chip U2 are connected to the Type-C male output circuit to read the voltage and current requested by the connected mobile phone or computer and other Type-C interface smart electronic devices. After receiving the request, the main control chip U2 communicates with the charger through the resistors R9 and R10 connected to the 10th and 11th pins, and through the Type-C male input circuit to obtain the corresponding voltage and current. The high level output of the second pin of the main control chip U2 turns on the transistor Q2, which is equivalent to the gate of the field effect transistor Q1 connected to the ground at one end of the resistor R3 being at a low level, and the field effect transistor Q1 is turned on to charge the Type-C interface smart electronic device connected to the Type-C male output circuit. The resistors R10, R11 and the ground line divide the input voltage to obtain the value of the input voltage and give it to the 20th pin of the main control chip U2 (optional model: CP622B or JSX16D01 or YX16D01) to calibrate the actual voltage.

[0030] If the main control chip U2 reads that the charger power is greater than or equal to 65W, the main control chip U2 will give priority to the DC interface output circuit. The second pin 3.3V of the voltage adjustment chip U1 is connected to the positive pole of the DC interface output circuit through the resistor R14 and the diode D1. If the DC interface output circuit is not connected to the intelligent electronic device with a DC interface (various DC socket old laptops), the cathode of the diode D1 is suspended. The 17th pin of the main control chip U2 reads that the positive voltage of the diode D1 is greater than 2V. The main control chip U2 determines that the DC interface output circuit is not connected to the intelligent electronic device with a DC interface. The 8th pin of the main control chip U2 outputs a low level and the transistor Q4 is turned off, which is equivalent to one end of the resistor R16 being suspended. The resistor R15 is pulled up from VIN to the gate of the field effect transistor Q3. The gate of the field effect transistor Q3 is at a high potential approximately equal to VIN. The field effect transistor Q3 remains in a closed state, and there is no power output in this DC interface output circuit. If the DC interface output circuit has an intelligent electronic device connected to the DC interface, the cathode of the diode D1 is equivalent to being grounded through the load equivalent resistance. The process of connecting the DC interface output circuit to the intelligent electronic device of the DC interface: the cathode of the diode D1 forms a grounding loop through the positive and negative poles of the computer battery, the potential of the diode D1 is forced to be pulled down, and a level lower than 2V is detected at the 17th pin of the main control chip U2. The main control chip U2 determines that there is an intelligent electronic device connected to the DC interface in the DC interface output circuit, and the high level output of the main control chip U2 at the 8th pin turns on the transistor Q4, which is equivalent to one end of the resistor R16 being grounded, pulling down the gate potential of the field effect transistor Q3, and the field effect transistor Q3 remains in the open state. At the same time as the field effect transistor Q3 is turned on, the resistors R9 and R10 connected to the 10th and 11th pins of the main control chip U2, and the Type-C male input circuit communicate with the charging head to request a 20V voltage, and the DC interface output circuit normally outputs a 20V voltage to the intelligent electronic device of the DC interface. At the same time, the Type-C male output circuit is connected to a Type-C interface intelligent electronic device. The resistors R11, R12, R13 and the Type-C male output circuit connected to the 7th, 14th and 16th pins of the main control chip U2 will declare to the mobile phone or computer the difference power obtained by subtracting 65W power from the input adapter power (if the input is 100W. 100W-65W=35W), that is, the Type-C male output circuit declares 35W power. The 3rd pin of the main control chip U2 outputs a high level to the 4th pin of the voltage adjustment chip U3. The voltage adjustment chip U3 works normally and provides 5V1.5A / 9V1.5A / 20V1.5A for the Type-C male output circuit.The DC interface output circuit normally outputs 20V voltage to charge the smart electronic device of the DC interface for a period of time. The main control chip U2 pin 4, pin 19J detects the potential difference on the resistor R17. When the current is less than 100mA after comparison, the main control chip U2 pin 8 outputs a low level and the transistor Q4 is turned off, which is equivalent to one end of the resistor R16 hanging in the air. The resistor R15 is pulled from VIN to the gate of the field effect transistor Q3. The gate of the field effect transistor Q3 is at a high potential approximately equal to VIN, and the field effect transistor Q3 remains in the off state. The resistor R11, resistor R12, resistor R13 and Type-C male head output circuit connected to the main control chip U2 pins 7, 14, and 16 will declare the power of the input adapter to the mobile phone or computer (if the input is 100W), that is, the output Type-C male head declares 100W power to the outside. The main control chip U2 pin 3 outputs a low level to the voltage adjustment chip U3 pin 4, the voltage adjustment chip U3 does not work, and the output voltage and current provided by the output Type-C male head are the voltage and current of the input adapter, realizing intelligent power distribution. (Resistors R19 and R18 provide a DC bias for pin 19 of the main control chip U2 to resolve the offset voltage of the operational amplifier inside the main control chip U2. Capacitor C4 is used to eliminate spikes).

[0031] As can be seen from the above, the utility model provides a Type-C charging line circuit with a DC output interface. By arranging a Type-C male input circuit, a power supply voltage adjustment circuit, a main control circuit, a Type-C male output circuit and a DC interface output circuit that cooperate with each other in the Type-C charging line circuit with a DC output interface, the main control circuit can adjust and distribute the output power of the Type-C male output circuit and the DC interface output circuit according to the input power of the Type-C male input circuit, so that one Type-C charging line can charge both smart electronic devices with Type-C interfaces and smart electronic devices with DC interfaces at the same time. It is very convenient to carry and use, and has high safety. It meets people's usage needs and improves people's usage experience, and solves the problem in the prior art that charging smart electronic devices with DC interfaces requires carrying an additional power adapter with a DC interface, which is very troublesome.

[0032] The specific implementation methods described above are preferred implementation methods of the present utility model, and are not intended to limit the specific implementation scope of the present utility model. The scope of the present utility model includes but is not limited to the specific implementation methods. All equivalent changes made in accordance with the present utility model are within the protection scope of the present utility model.

Claims

1. A Type-C charging cable circuit with a DC output interface, characterized in that: The device comprises a Type-C male input circuit, a power supply voltage adjustment circuit, a main control circuit, a Type-C male output circuit and a DC interface output circuit. The input end of the Type-C male input circuit can be connected to a charging head. The output end of the Type-C male input circuit is connected to the main control circuit and the power supply voltage adjustment circuit for power supply. The output end of the power supply voltage adjustment circuit is connected to the input end of the Type-C male output circuit. The output end of the Type-C male output circuit can be connected to a Type-C interface intelligent electronic device. The output end of the main control circuit is connected to the input end of the power supply voltage adjustment circuit, the input end of the Type-C male output circuit and the input end of the DC interface output circuit. The output end of the DC interface output circuit can be connected to a DC interface intelligent electronic device. The main control circuit can adjust and distribute the output power of the Type-C male output circuit and the DC interface output circuit according to the input power of the Type-C male input circuit.

2. The Type-C charging cable circuit with a DC output interface according to claim 1, characterized in that: The Type-C male input circuit is provided with an interface CN1, a voltage adjustment chip U1 and a resistor R1. The output end of the interface CN1 is provided with 16 pins, and the voltage adjustment chip U1 is provided with 3 pins. The A4, B9, B4, and A9 pins of the interface CN1 are connected to one end of the resistor R1 and the input end of the power supply voltage adjustment circuit, the other end of the resistor R1 is connected to the third pin of the voltage adjustment chip U1, and the second pin of the voltage adjustment chip U1 is connected to the input end of the main control circuit.

3. The Type-C charging cable circuit with a DC output interface according to claim 2, characterized in that: The main control circuit is provided with a main control chip U2, a resistor R9, a resistor R10, a resistor R14, a resistor R15, a resistor R16, a diode D1, a field effect transistor Q3 and a transistor Q4, wherein the main control chip U2 is provided with 20 pins, the 6th pin of the main control chip U2 is connected to the 2nd pin of the voltage adjustment chip U1, the 10th pin of the main control chip U2 is connected to one end of the resistor R9, the 11th pin of the main control chip U2 is connected to one end of the resistor R10, the other end of the resistor R9 is connected to the other end of the resistor R10 and the A5th pin of the interface CN1, the 8th pin of the main control chip U2 is connected to the base of the transistor Q4, and the The collector is connected to one end of the resistor R16, the other end of the resistor R16 is connected to the gate of the field effect transistor Q3 and one end of the resistor R15, the other end of the resistor R15 is connected to the A4 pin of the interface CN1 and the source of the field effect transistor Q3, the drain of the field effect transistor Q3 is connected to the cathode of the diode D1 and the input end of the DC interface output circuit, the anode of the diode D1 is connected to one end of the resistor R14 and the 17th pin of the main control chip U2, the other end of the resistor R14 is connected to the 2nd pin of the voltage adjustment chip U1, the 19th pin of the main control chip U2 is connected to the input end of the DC interface output circuit, and the emitter of the transistor Q4 is grounded.

4. The Type-C charging cable circuit with a DC output interface according to claim 3, characterized in that: The main control circuit is also provided with a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R11, a resistor R12, a resistor R13, a field effect transistor Q1 and a transistor Q2, wherein the 16th pin of the main control chip U2 is connected to one end of the resistor R11, the 14th pin of the main control chip U2 is connected to one end of the resistor R12, the 7th pin of the main control chip U2 is connected to one end of the resistor R13, the other end of the resistor R11 is connected to the other end of the resistor R12, the other end of the resistor R13, and the input end of the Type-C male output circuit, the 2nd pin of the main control chip U2 is connected to the base of the transistor Q2, the collector of the transistor Q2 is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to The gate of the field effect transistor Q1 is connected to one end of the resistor R2, the other end of the resistor R2 is connected to the A4 pin of the interface CN1, the source of the field effect transistor Q1, and one end of the resistor R5, the drain of the field effect transistor Q1 is connected to one end of the resistor R4 and the input end of the Type-C male output circuit, the other end of the resistor R5 is connected to one end of the resistor R6 and the 20th pin of the main control chip U2, the 18th pin of the main control chip U2 is connected to one end of the resistor R8, the 13th pin of the main control chip U2 is connected to one end of the resistor R7, the other end of the resistor R8 is connected to the other end of the resistor R7 and the input end of the power supply voltage adjustment circuit, and the emitter of the transistor Q2, the other end of the resistor R4, and the other end of the resistor R6 are grounded.

5. The Type-C charging cable circuit with a DC output interface according to claim 4, characterized in that: The power supply voltage adjustment circuit is provided with a voltage adjustment chip U3 and an inductor L1. The voltage adjustment chip U3 is provided with 6 pins. The 3rd pin of the voltage adjustment chip U3 is connected to the other end of the resistor R8 and the other end of the resistor R7. The 4th pin of the voltage adjustment chip U3 is connected to the 3rd pin of the main control chip U2. The 5th pin of the voltage adjustment chip U3 is connected to the A4th pin of the interface CN1. The 6th pin of the voltage adjustment chip U3 is connected to one end of the inductor L1. The other end of the inductor L1 is connected to the input end of the Type-C male output circuit.

6. The Type-C charging cable circuit with a DC output interface according to claim 5, characterized in that: The Type-C male output circuit is provided with an interface CN2, and the input end of the interface CN2 is provided with 16 pins. The A4, B9, B4, and A9 pins of the interface CN2 are connected to the other end of the inductor L1, the drain of the field effect transistor Q1, and one end of the resistor R4. The A5 pin of the interface CN2 is connected to the other end of the resistor R11, the other end of the resistor R12, and the other end of the resistor R13.

7. The Type-C charging cable circuit with a DC output interface according to claim 6, characterized in that: The DC interface output circuit is provided with a DC output interface CN3, a resistor R17, a resistor R18, a resistor R19 and a capacitor C4. The input end of the DC output interface CN3 is provided with two pins. The first pin of the DC output interface CN3 is connected to the drain of the field effect transistor Q3 and the cathode of the diode D1. The second pin of the DC output interface CN3 is connected to one end of the resistor R17 and one end of the resistor R18. The other end of the resistor R18 is connected to one end of the resistor R19 and one end of the capacitor C4. The other end of the resistor R19 is connected to the second pin of the voltage adjustment chip U1. The other end of the capacitor C4 and the other end of the resistor R17 are grounded.

8. The Type-C charging cable circuit with a DC output interface according to claim 7, characterized in that: The model of the voltage adjustment chip U1 is LDO-3.3V.

9. The Type-C charging cable circuit with a DC output interface according to claim 8, characterized in that: The model of the main control chip U2 is CP6622B.

10. The Type-C charging cable circuit with a DC output interface according to claim 9, characterized in that: The model of the voltage adjustment chip U3 is SK6632 or AS2320.

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