CN206775202U - A kind of quick-charging circuit - Google Patents

Abstract

The utility model discloses a kind of quick-charging circuit, including the power supply input circuit and current rectifying and wave filtering circuit being sequentially connected, high frequency transformer, clamp circuit, circuit is rushed soon, the current rectifying and wave filtering circuit is connected to the main winding of high frequency transformer, the clamp circuit is also connected to the main winding for rushing circuit and high frequency transformer soon for absorbing the reverse interference of transformer so as to prevent from being interfered in power supply transformation, the output end connection of the high frequency transformer rushes circuit soon so that the DC voltage that fast charge circuit is exported using the output end of high frequency transformer is powered, fast charge charging circuit in charger circuit by integrating fast charge circuit, so as to realize that charger can carry out quick charge.

Description

A kind of quick-charging circuit

Technical field

It the utility model is related to charging circuit field, and in particular to a kind of quick-charging circuit.

Background technology

Mains charger is many families such as a kind of housed device, mobile phone, computer, electric car commonly used in people's daily life Electrical appliance can all use and arrive charger；The pattern of existing charger and had nothing in common with each other using object, but existing charger uses more The use of discrete component, a large amount of discrete components causes high processing costs, complex process to cause the repair rate of product higher, electric in addition Line structure is complex, and circuit reliability is not high, and circuit linearity, load regulation are poor, also compares power consumption, and the electricity exported It is not big enough to flow voltage, quick charge can not be carried out, charging rate is excessively slow.

Utility model content

The purpose of this utility model is to provide that a kind of production cost is low, circuit reliability is high and low-power consumption and can carried out fast The quick-charging circuit of speed charging.

The utility model is achieved through the following technical solutions：A kind of quick-charging circuit, including the power supply being sequentially connected are defeated Enter circuit and current rectifying and wave filtering circuit, high frequency transformer, clamp circuit, rush circuit soon, the high frequency transformer includes main winding, pair Winding and assists winding, the current rectifying and wave filtering circuit and clamp circuit are connected to the main winding of high frequency transformer, the high frequency Circuit is rushed in transformer connection soon, and the clamp circuit is also connected to rushes circuit soon；The circuit that rushes soon includes voltage-regulator diode, the Four resistance, 3rd resistor, the 5th resistance, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the second diode, main control IC chip, 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance, the 13rd electricity Resistance, the 14th resistance, the 15th resistance, the first metal-oxide-semiconductor, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, the 9th electric capacity, the tenth electricity Appearance, fast charge IC chip, USB port, the 3rd polar capacitor, quadripolarity electric capacity；The D ports of the main control IC chip are connected to 4th pin of the main winding of high frequency transformer, the first pin connection voltage-regulator diode of the assists winding of the high frequency transformer Negative pole, the negative pole of the voltage-regulator diode connects one end of the 4th resistance, and one end of the 4th resistance is also connected with the 5th electricity One end of appearance, another termination power of the 5th electric capacity, the positive pole of the voltage-regulator diode connects the another of the 4th resistance End, the other end of the 4th resistance connect one end of the 5th resistance, and the other end of the 5th resistance is connected to main control IC The BP ports of chip, the BP ports of the main control IC chip are also connected with the 3rd electric capacity, another termination electricity of the 3rd electric capacity Source, the 3rd pin of the assists winding of the high frequency transformer connects the negative pole of the second diode, second diode Negative pole is also connected with one end of the 4th electric capacity, one end of the other end connection 3rd resistor of the 4th electric capacity, the 3rd resistor The other end and the second diode positive pole with all connecing power supply, the IS ports of the main control IC chip meet output ground, the master The FWD pins of IC chip are controlled to connect one end of the 13rd resistance, the other end of the 13rd resistance connects the 12nd resistance One end, the other end of the 12nd resistance connects one end of the 9th electric capacity, and the other end of the 9th electric capacity is connected to the The source electrode of one metal-oxide-semiconductor, the drain electrode of first metal-oxide-semiconductor are connected to the 9th pin of the auxiliary winding of high frequency transformer, and described first The higher level of metal-oxide-semiconductor is connected to the SR/P pins of main control IC chip, the tenth pin connection of the auxiliary winding of the high frequency transformer One end of 8th electric capacity, one end of the 8th electric capacity are additionally coupled to the VO pins of main control IC chip, the main control IC cores The VO pins of piece are additionally coupled to the positive pole of quadripolarity electric capacity, and the positive pole of the quadripolarity electric capacity is connected to the 3rd polar capacitor Positive pole, the positive pole of the 3rd polar capacitor are also connected with one end of the 8th resistance, and one end of the 8th resistance is connected to the tenth One end of four resistance, one end of the 14th resistance are additionally coupled to the first pin of USB port, the 8th electric capacity it is another The negative pole of end connection quadripolarity electric capacity, the negative pole of the quadripolarity electric capacity is also connected with the negative pole of the 3rd polar capacitor, described The negative pole of 3rd polar capacitor is additionally coupled to one end of the 15th resistance, and one end of the 15th resistance is also connected with the 9th resistance One end, one end of the 9th resistance is also connected with one end of the 7th electric capacity, and one end of the 7th electric capacity is also connected with the 6th electricity One end of appearance, the other end of the 6th electric capacity are connected to the BPS pins of main control IC chip, and one end of the 7th electric capacity is also Connecting the negative pole of the 3rd diode, the negative pole of the 3rd diode is additionally coupled to the GND pin of main control IC chip, and described The positive pole of three diodes and the IS pins of main control IC chip all connect output ground, the FB pins connection the of the main control IC chip The other end of seven electric capacity, the other end of the 7th electric capacity connect the other end of the 9th resistance, the other end of the 9th resistance It is connected to one end of the 11st resistance, the second pin of the other end connection fast charge IC chip of the 11st resistance, described the One end of 11 resistance is also connected with one end of the 7th resistance, and the 3rd of the other end connection fast charge IC chip of the 7th resistance draws Pin, one end of the 7th resistance are additionally coupled to the other end of the 8th resistance, the other end connection fast charge of the 15th resistance First pin of IC chip, the first pin of the fast charge IC chip are also connected with one end of the tenth resistance, the tenth resistance The other end connects the 7th pin of fast charge IC chip, and one end of the tenth resistance is also connected with one end of the tenth electric capacity, and described the 8th pin of the other end connection fast charge IC chip of ten electric capacity, the 8th pin of the fast charge IC chip are also connected with the 14th electricity The other end of resistance, the other end of the 14th resistance are additionally coupled to the 4th pin of fast charge IC chip；The fast charge IC chip The 5th pin connection USB port second pin, the 6th pin connection USB port of the fast charge IC chip the 3rd draws Pin, the 3rd pin of the USB port are also connected with one end of the 6th resistance, the 4th pin and the 6th resistance of the USB port The other end all connect output ground；The power supply input circuit includes live wire input, zero line input, common mode inductance and insurance Silk, the live wire input are connected to the first pin of common mode inductance by fuse, and the zero line input connects common mode inductance Crus secunda, the 3rd pin of the common mode inductance and the 4th pin are connected to current rectifying and wave filtering circuit；The current rectifying and wave filtering circuit includes Bridge rectifier and the π filter circuits being connected with bridge rectifier, the 3rd pin connection bridge rectifier of the common mode inductance The 3rd pin, the first pin of the 4th pin connection bridge rectifier of the common mode inductance, the π filter circuits include the first pole Property electric capacity, the second polar capacitor, the second inductance and the 3rd inductance, the crus secunda of the bridge rectifier is connected to the first polarity electricity The positive pole of appearance, the 4th pin of the bridge rectifier are connected to the negative pole of the first polar capacitor, and first polar capacitor is just Pole is also connected with one end of the second inductance, and the negative pole of first polar capacitor is also connected with one end of the 3rd inductance, second electricity The other end of sense connects the positive pole of the second polar capacitor, and the other end of the 3rd inductance and the negative pole of the second polar capacitor all connect Power supply, the positive pole of second polar capacitor is additionally coupled to the 5th pin and clamp circuit of the main winding of high frequency transformer； The clamp circuit includes the first diode, first resistor, second resistance and the second electric capacity；The positive pole of second polar capacitor One end of second resistance is connected, one end of the second resistance is also connected with one end of the second electric capacity, one end of second electric capacity The 5th pin of the main winding of high frequency transformer is additionally coupled to, the other end of second electric capacity connects the another of second resistance End, the other end of the second resistance are also connected with one end of first resistor, and the other end of the first resistor connects the one or two pole The negative pole of pipe, the positive pole of first diode are connected to the 4th pin of the main winding of high frequency transformer；The high frequency transformation The model EE16 of device widens；Isolation capacitance is provided between output ground the power supply；The model of the main control IC chip For SC1222K；The model CHY100 of the fast charge IC chip.

The utility model includes the power supply input circuit and current rectifying and wave filtering circuit, high frequency transformer, pincers being sequentially connected Position circuit, circuit is rushed soon, the current rectifying and wave filtering circuit is connected to the main winding of high frequency transformer, and the clamp circuit is also connected to The main winding for rushing circuit and high frequency transformer soon is used to absorb the reverse interference of transformer so as to prevent in power supply transformation by dry Disturb, the output end connection of the high frequency transformer rushes circuit so that what fast charge circuit was exported using the output end of high frequency transformer soon DC voltage is powered, and fast charge charging circuit in charger circuit by integrating fast charge circuit, so as to realize that charger can enter Row quick charge.

It is of the present utility model to be beneficial in that：1）Circuit reduction is practical, simple in construction, and reliability improves；2）Improve electricity Linear and load regulation, reduce energy consumption；3）The direct current straightening that fast charge circuit is exported using the output end of high frequency transformer Connect and be powered；4）Fast charge charging circuit in charger circuit by integrating fast charge circuit, so as to realize that charger can be carried out soon Speed charging.

Brief description of the drawings

Fig. 1 is circuit theory diagrams of the present utility model.

Embodiment

Below in conjunction with the accompanying drawings with embodiment, the utility model is further described.

See Fig. 1, a kind of quick-charging circuit, including power supply input circuit and current rectifying and wave filtering circuit, the high frequency being sequentially connected Transformer T1, clamp circuit, circuit is rushed soon, the high frequency transformer T1 includes main winding, auxiliary winding and assists winding, described whole Stream filter circuit and clamp circuit are connected to high frequency transformer T1 main winding, and punching is electric soon for the high frequency transformer T1 connections Road, the clamp circuit is also connected to rushes circuit soon；The circuit that rushes soon includes voltage-regulator diode ZD1, the 4th resistance R4, the 3rd Resistance R3, the 5th resistance R5, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, the second diode D2, main control IC chip U1, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11, the tenth Two resistance R12, the 13rd resistance R13, the 14th resistance R14, the 15th resistance R15, the first metal-oxide-semiconductor Q1, the 6th electric capacity C6, Seven electric capacity C7, the 8th electric capacity C8, the 9th electric capacity C9, the tenth electric capacity C10, fast charge IC chip U2, USB port USB1, the 3rd polarity Electric capacity EC3, quadripolarity electric capacity EC4；The D ports of the main control IC chip U1 are connected to high frequency transformer T1 main winding 4th pin, the first pin connection voltage-regulator diode ZD1 of the assists winding of high frequency transformer T1 negative pole, the voltage stabilizing Diode ZD1 negative pole connects the 4th resistance R4 one end, and one end of the 4th resistance R4 is also connected with the one of the 5th electric capacity C5 End, another termination power of the 5th electric capacity C5, the positive pole of the voltage-regulator diode ZD1 connects the another of the 4th resistance R4 End, the other end of the 4th resistance R4 connect the 5th resistance R5 one end, and the other end of the 5th resistance R5 is connected to master IC chip U1 BP ports are controlled, the BP ports of the main control IC chip U1 are also connected with the 3rd electric capacity C3, the 3rd electric capacity C3 another termination power, the 3rd pin of the assists winding of the high frequency transformer T1 connects the negative of the second diode D2 Pole, the negative pole of the second diode D2 are also connected with the 4th electric capacity C4 one end, the other end connection of the 4th electric capacity C4 the Three resistance R3 one end, the other end of the 3rd resistor R3 and the second diode D2 positive pole with all connecing power supply, the master control IC chip U1 processed IS ports connect output ground, and the FWD pins of the main control IC chip U1 connect the one of the 13rd resistance R13 End, the other end of the 13rd resistance R13 connect the 12nd resistance R12 one end, the other end of the 12nd resistance R12 Connecting the 9th electric capacity C9 one end, the other end of the 9th electric capacity C9 is connected to the first metal-oxide-semiconductor Q1 source electrode, and described first Metal-oxide-semiconductor Q1 drain electrode is connected to the 9th pin of high frequency transformer T1 auxiliary winding, and the higher level of the first metal-oxide-semiconductor Q1 is connected to Main control IC chip U1 SR/P pins, the tenth pin of the auxiliary winding of the high frequency transformer T1 connect the one of the 8th electric capacity C8 End, one end of the 8th electric capacity C8 is additionally coupled to main control IC chip U1 VO pins, the VO of the main control IC chip U1 Pin is additionally coupled to quadripolarity electric capacity EC4 positive pole, and the positive pole of the quadripolarity electric capacity EC4 is connected to the 3rd polar capacitor EC3 positive pole, the positive pole of the 3rd polar capacitor EC3 are also connected with the 8th resistance R8 one end, and the one of the 8th resistance R8 End is connected to the 14th resistance R14 one end, and one end of the 14th resistance R14 is additionally coupled to the first of USB port USB1 Pin, the other end connection quadripolarity electric capacity EC4 of the 8th electric capacity C8 negative pole, the quadripolarity electric capacity EC4's is negative Pole is also connected with the 3rd polar capacitor EC3 negative pole, and the negative pole of the 3rd polar capacitor EC3 is additionally coupled to the 15th resistance R15 One end, one end of the 15th resistance R15 is also connected with the 9th resistance R9 one end, and one end of the 9th resistance R9 also connects The 7th electric capacity C7 one end is connect, one end of the 7th electric capacity C7 is also connected with the 6th electric capacity C6 one end, the 6th electric capacity C6 The other end be connected to main control IC chip U1 BPS pins, one end of the 7th electric capacity C7 is also connected with the 3rd diode D3 Negative pole, the negative pole of the 3rd diode D3 is additionally coupled to main control IC chip U1 GND pin, the 3rd diode D3 Positive pole and main control IC chip U1 IS pins all connect output ground, the main control IC chip U1 FB pins connection the 7th electricity Hold the C7 other end, the other end of the 7th electric capacity C7 connects the 9th resistance R9 other end, and the 9th resistance R9's is another One end is connected to the 11st resistance R11 one end, and the other end of the 11st resistance R11 connects the second of fast charge IC chip U2 Pin, one end of the 11st resistance R11 are also connected with the 7th resistance R7 one end, the other end connection of the 7th resistance R7 Fast charge IC chip U2 the 3rd pin, one end of the 7th resistance R7 are additionally coupled to the 8th resistance R8 other end, and described 15 resistance R15 other end connection fast charge IC chip U2 the first pin, the first pin of the fast charge IC chip U2 also connect Connect the tenth resistance R10 one end, the other end connection fast charge IC chip U2 of the tenth resistance R10 the 7th pin, described the Ten resistance R10 one end is also connected with the tenth electric capacity C10 one end, the other end connection fast charge IC chip of the tenth electric capacity C10 U2 the 8th pin, the 8th pin of the fast charge IC chip U2 are also connected with the 14th resistance R14 other end, and the described 14th The resistance R14 other end is additionally coupled to fast charge IC chip U2 the 4th pin；The 5th pin connection of the fast charge IC chip U2 USB port USB1 second pin, the 6th pin connection USB port USB1 of the fast charge IC chip U2 the 3rd pin, institute The 3rd pin for stating USB port USB1 is also connected with the 6th resistance R6 one end, the 4th pin and the 6th of the USB port USB1 The resistance R6 other end all connects output ground；The power supply input circuit includes live wire input L, zero line input N, common mode inductance L1 and fuse F1, the live wire input L are connected to common mode inductance LF1 the first pin by fuse F1, and the zero line is defeated Enter to hold N connection common mode inductances LF1 crus secunda, the 3rd pin and the 4th pin of the common mode inductance LF1 are connected to rectifying and wave-filtering electricity Road；The current rectifying and wave filtering circuit includes bridge rectifier BD1 and the π filter circuits being connected with bridge rectifier BD1, described common Mould inductance LF1 the 3rd pin connection bridge rectifier BD1 the 3rd pin, the 4th pin connection bridge-type of the common mode inductance LF1 are whole Device BD1 the first pin is flowed, the π filter circuits include the first polar capacitor EC1, the second polar capacitor EC2, the second inductance L2 With the 3rd inductance L3, the crus secunda of the bridge rectifier BD1 is connected to the first polar capacitor EC1 positive pole, and the bridge-type is whole Stream device BD1 the 4th pin is connected to the first polar capacitor EC1 negative pole, and the positive pole of the first polar capacitor EC1 is also connected with the Two inductance L2 one end, the negative pole of the first polar capacitor EC1 are also connected with the 3rd inductance L3 one end, the second inductance L2 The other end connect the second polar capacitor EC2 positive pole, the other end of the 3rd inductance L3 and the second polar capacitor EC2's is negative With all connecing power supply, the positive pole of the second polar capacitor EC2 is additionally coupled to the 5th pin of high frequency transformer T1 main winding for pole And clamp circuit；The clamp circuit includes the first diode D1, first resistor R1, second resistance R2 and the second electric capacity C2；Institute The second polar capacitor EC2 positive pole connection second resistance R2 one end is stated, one end of the second resistance R2 is also connected with the second electricity Holding C2 one end, one end of the second electric capacity C2 is additionally coupled to the 5th pin of high frequency transformer T1 main winding, and described the The two electric capacity C2 other end connection second resistance R2 other end, the other end of the second resistance R2 are also connected with first resistor R1 One end, the other end of the first resistor R1 connects the first diode D1 negative pole, and the positive pole of the first diode D1 connects It is connected to the 4th pin of high frequency transformer T1 main winding；The model EE16 of the high frequency transformer T1 widens；The power supply Isolation capacitance CY1 is provided between ground and output ground；The model SC1222K of the main control IC chip U1；The fast charge IC cores Piece U2 model CHY100.

In present embodiment, the power supply input circuit and current rectifying and wave filtering circuit and high frequency transformer are sequentially connected, and are used In the alternating voltage for inputting the power supply input circuit is converted into DC voltage, and it is defeated by the output end of the high frequency transformer Go out, the clamp circuit is used to absorb the drain-source end peak voltage inside main control IC chip U1, and can prevent reversely Interference, the fast charge circuit are connected with the output end of the high frequency transformer, so that the fast charge circuit is become using the high frequency The DC voltage of the output end output of depressor is powered, so as to reach the purpose of quick charge.

In present embodiment, current rectifying and wave filtering circuit is connected with the high frequency transformer, for being provided to the fast charge circuit Operating voltage, the output end of the high frequency transformer are connected with the fast charge circuit, for providing work to the fast charge circuit Voltage, the fast charge circuit are connected with the USB port USB1, the output for the USB port USB1 to the quick charge The charging process of port is controlled.

In present embodiment, the fast charge circuit uses the fast charge agreements of high pass Quick Charge 2.0.

The scope of protection of the utility model includes but is not limited to embodiment of above, and the scope of protection of the utility model is to weigh Sharp claim is defined, and any replacement being readily apparent that to those skilled in the art that this technology is made, deformation, improvement are each fallen within The scope of protection of the utility model.

Claims (8)

1. A kind of 1. quick-charging circuit, it is characterised in that：Including the power supply input circuit being sequentially connected and current rectifying and wave filtering circuit, height Frequency power transformer（T1）, clamp circuit, rush circuit, the high frequency transformer soon（T1）Including main winding, auxiliary winding and assists winding, The current rectifying and wave filtering circuit and clamp circuit are connected to high frequency transformer（T1）Main winding, the high frequency transformer（T1）Even Connect and rush circuit soon, the clamp circuit is also connected to rushes circuit soon；The circuit that rushes soon includes voltage-regulator diode（ZD1）, the 4th Resistance（R4）, 3rd resistor（R3）, the 5th resistance（R5）, the 3rd electric capacity（C3）, the 4th electric capacity（C4）, the 5th electric capacity（C5）, Two diodes（D2）, main control IC chip（U1）, the 6th resistance（R6）, the 7th resistance（R7）, the 8th resistance（R8）, the 9th resistance （R9）, the tenth resistance（R10）, the 11st resistance（R11）, the 12nd resistance（R12）, the 13rd resistance（R13）, the 14th resistance （R14）, the 15th resistance（R15）, the first metal-oxide-semiconductor（Q1）, the 6th electric capacity（C6）, the 7th electric capacity（C7）, the 8th electric capacity（C8）, Nine electric capacity（C9）, the tenth electric capacity（C10）, fast charge IC chip（U2）, USB port（USB1）, the 3rd polar capacitor（EC3）, the 4th Polar capacitor（EC4）；The main control IC chip（U1）D ports be connected to high frequency transformer（T1）Main winding the 4th draw Pin, the high frequency transformer（T1）Assists winding the first pin connection voltage-regulator diode（ZD1）Negative pole, the voltage stabilizing two Pole pipe（ZD1）Negative pole connect the 4th resistance（R4）One end, the 4th resistance（R4）One end be also connected with the 5th electric capacity （C5）One end, the 5th electric capacity（C5）Another termination power, the voltage-regulator diode（ZD1）Positive pole connection the 4th Resistance（R4）The other end, the 4th resistance（R4）The other end connect the 5th resistance（R5）One end, the 5th resistance （R5）The other end be connected to main control IC chip（U1）BP ports, the main control IC chip（U1）BP ports be also connected with 3rd electric capacity（C3）, the 3rd electric capacity（C3）Another termination power, the high frequency transformer（T1）Assists winding 3rd pin connects the second diode（D2）Negative pole, second diode（D2）Negative pole be also connected with the 4th electric capacity（C4）'s One end, the 4th electric capacity（C4）The other end connection 3rd resistor（R3）One end, the 3rd resistor（R3）The other end With the second diode（D2）Positive pole with all connecing power supply, the main control IC chip（U1）IS ports connect output ground, the master Control IC chip（U1）FWD pins connect the 13rd resistance（R13）One end, the 13rd resistance（R13）The other end Connect the 12nd resistance（R12）One end, the 12nd resistance（R12）The other end connect the 9th electric capacity（C9）One end, 9th electric capacity（C9）The other end be connected to the first metal-oxide-semiconductor（Q1）Source electrode, first metal-oxide-semiconductor（Q1）Drain electrode connection Paramount frequency power transformer（T1）Auxiliary winding the 9th pin, first metal-oxide-semiconductor（Q1）Higher level be connected to main control IC chip （U1）SR/P pins, the high frequency transformer（T1）Auxiliary winding the tenth pin connect the 8th electric capacity（C8）One end, institute State the 8th electric capacity（C8）One end be additionally coupled to main control IC chip（U1）VO pins, the main control IC chip（U1）VO Pin is additionally coupled to quadripolarity electric capacity（EC4）Positive pole, the quadripolarity electric capacity（EC4）Positive pole be connected to the 3rd polarity electricity Hold（EC3）Positive pole, the 3rd polar capacitor（EC3）Positive pole be also connected with the 8th resistance（R8）One end, it is described 8th electricity Resistance（R8）One end be connected to the 14th resistance（R14）One end, the 14th resistance（R14）One end be additionally coupled to USB Port（USB1）The first pin, the 8th electric capacity（C8）The other end connection quadripolarity electric capacity（EC4）Negative pole, it is described Quadripolarity electric capacity（EC4）Negative pole be also connected with the 3rd polar capacitor（EC3）Negative pole, the 3rd polar capacitor（EC3）'s Negative pole is additionally coupled to the 15th resistance（R15）One end, the 15th resistance（R15）One end be also connected with the 9th resistance（R9） One end, the 9th resistance（R9）One end be also connected with the 7th electric capacity（C7）One end, the 7th electric capacity（C7）One end It is also connected with the 6th electric capacity（C6）One end, the 6th electric capacity（C6）The other end be connected to main control IC chip（U1）BPS Pin, the 7th electric capacity（C7）One end be also connected with the 3rd diode（D3）Negative pole, the 3rd diode（D3）It is negative Pole is additionally coupled to main control IC chip（U1）GND pin, the 3rd diode（D3）Positive pole and main control IC chip （U1）IS pins all connect output ground, the main control IC chip（U1）FB pins connect the 7th electric capacity（C7）The other end, 7th electric capacity（C7）The other end connect the 9th resistance（R9）The other end, the 9th resistance（R9）The other end connection To the 11st resistance（R11）One end, the 11st resistance（R11）The other end connection fast charge IC chip（U2）Second draw Pin, the 11st resistance（R11）One end be also connected with the 7th resistance（R7）One end, the 7th resistance（R7）The other end Connect fast charge IC chip（U2）The 3rd pin, the 7th resistance（R7）One end be additionally coupled to the 8th resistance（R8）It is another End, the 15th resistance（R15）The other end connection fast charge IC chip（U2）The first pin, the fast charge IC chip（U2） The first pin be also connected with the tenth resistance（R10）One end, the tenth resistance（R10）The other end connection fast charge IC chip （U2）The 7th pin, the tenth resistance（R10）One end be also connected with the tenth electric capacity（C10）One end, the tenth electric capacity （C10）The other end connection fast charge IC chip（U2）The 8th pin, the fast charge IC chip（U2）The 8th pin be also connected with 14th resistance（R14）The other end, the 14th resistance（R14）The other end be additionally coupled to fast charge IC chip（U2） Four pins；The fast charge IC chip（U2）The 5th pin connection USB port（USB1）Second pin, the fast charge IC chip （U2）The 6th pin connection USB port（USB1）The 3rd pin, the USB port（USB1）The 3rd pin be also connected with Six resistance（R6）One end, the USB port（USB1）The 4th pin and the 6th resistance（R6）The other end all connect output ground.
2. A kind of 2. quick-charging circuit according to claim 1, it is characterised in that：The power supply input circuit includes live wire Input（L）, zero line input（N）, common mode inductance（L1）And fuse（F1）, the live wire input（L）Pass through fuse （F1）It is connected to common mode inductance（LF1）The first pin, the zero line input（N）Connect common mode inductance（LF1）Crus secunda, institute State common mode inductance（LF1）The 3rd pin and the 4th pin be connected to current rectifying and wave filtering circuit.
3. A kind of 3. quick-charging circuit according to claim 2, it is characterised in that：The current rectifying and wave filtering circuit includes bridge-type Rectifier BD1 and the π filter circuits being connected with bridge rectifier BD1, the common mode inductance（LF1）The 3rd pin connection bridge-type Rectifier BD1 the 3rd pin, the common mode inductance（LF1）The 4th pin connection bridge rectifier BD1 the first pin, the π Filter circuit includes the first polar capacitor（EC1）, the second polar capacitor（EC2）, the second inductance（L2）With the 3rd inductance（L3）, institute The crus secunda for stating bridge rectifier BD1 is connected to the first polar capacitor（EC1）Positive pole, the 4th of the bridge rectifier BD1 the Pin is connected to the first polar capacitor（EC1）Negative pole, first polar capacitor（EC1）Positive pole be also connected with the second inductance（L2） One end, first polar capacitor（EC1）Negative pole be also connected with the 3rd inductance（L3）One end, second inductance（L2）'s The other end connects the second polar capacitor（EC2）Positive pole, the 3rd inductance（L3）The other end and the second polar capacitor（EC2） Negative pole with all connecing power supply, second polar capacitor（EC2）Positive pole be additionally coupled to high frequency transformer（T1）Main winding 5th pin and clamp circuit.
4. A kind of 4. quick-charging circuit according to claim 3, it is characterised in that：The clamp circuit includes the one or two pole Pipe（D1）, first resistor（R1）, second resistance（R2）With the second electric capacity（C2）；Second polar capacitor（EC2）Positive pole connect Connect second resistance（R2）One end, the second resistance（R2）One end be also connected with the second electric capacity（C2）One end, described second Electric capacity（C2）One end be additionally coupled to high frequency transformer（T1）Main winding the 5th pin, second electric capacity（C2）It is another End connection second resistance（R2）The other end, the second resistance（R2）The other end be also connected with first resistor（R1）One end, The first resistor（R1）The other end connect the first diode（D1）Negative pole, first diode（D1）Positive pole connection Paramount frequency power transformer（T1）Main winding the 4th pin.
5. A kind of 5. quick-charging circuit according to claim 1, it is characterised in that：The high frequency transformer（T1）Model Widen for EE16.
6. A kind of 6. quick-charging circuit according to claim 1, it is characterised in that：Set between output ground the power supply There is isolation capacitance（CY1）.
7. A kind of 7. quick-charging circuit according to claim 1, it is characterised in that：The main control IC chip（U1）Type Number it is SC1222K.
8. A kind of 8. quick-charging circuit according to claim 1, it is characterised in that：The fast charge IC chip（U2）Model For CHY100.