CN206807066U - Quick-charging circuit - Google Patents

Abstract

Field of circuit technology is the utility model is related to, refers in particular to a kind of quick-charging circuit；The utility model includes processor, and the OUT terminal of processor is connected to power output end, three electric capacity are parallel between the OUT terminal and ground of processor；Resistance of the HVSS ends of processor by series connection, capacitance connection to power output end；D+ ends, the D ends of processor connect the D+ ends of USB interface, D ends respectively；Processor connecting valve controls pin, the pin ground connection of switch control pin, a pin connect the EN ends of processor, a pin connects the VIN ends of processor, it is grounded after the VREG ends connection electric capacity of processor, the LX ends of processor are grounded after connecting resistance, electric capacity, the VIN ends of processor are connected to after the LX ends connection inductance of processor, three electric capacity are parallel between VIN ends and ground；By controlling the voltage change at D+ ends, D ends, the voltage change of circuit output is realized, so as to realize quick charge.

Description

Quick-charging circuit

Technical field

Field of circuit technology is the utility model is related to, refers in particular to a kind of quick-charging circuit.

Background technology

With mechanics of communication fast-developing, the communication such as mobile phone, electronic equipment have turned into essential in people's life One of articles for use, however, the use of these electronic equipments needs power consumption, and use is more frequent, and its power consumption rate is faster, therefore, People need constantly to these electronic equipments charge, and people also there is an urgent need to can quick charge to meet use demand, Existing charging electric wire has not obviously adapted to demand.

Therefore, based on above-mentioned existing charging circuit the defects of, to existing charging circuit, it is necessary to be improved.

The content of the invention

The purpose of this utility model is to provide a kind of quick-charging circuit in view of the shortcomings of the prior art, the quick charge Circuit is solved present in existing charging circuit：The defects of being unable to quick charge.

To achieve the above object, the utility model is achieved through the following technical solutions：Quick-charging circuit, including place Device is managed, processor uses FP6719 model chips, and the OUT terminal of processor is connected to power output end, OUT terminal and the ground of processor Between be parallel with three electric capacity；Resistance of the HVSS ends of processor by series connection, capacitance connection to power output end；Processor connects It is connected to USB interface, the D+ ends of the D+ ends connection USB interface of processor, the D- ends of the D- ends connection USB interface of processor；Processing Device connecting valve controls pin, and the pin ground connection of switch control pin, a pin connect the EN ends of processor, a pin connection processing The VIN ends of device, it is grounded after the VREG ends connection electric capacity of processor, is grounded after the LX ends of processor connection resistance, electric capacity, processor LX ends connection inductance after be connected to VIN ends, three electric capacity are parallel between the VIN ends of processor and ground.

The beneficial effects of the utility model are：By controlling the voltage change at D+ ends, D- ends, the electricity of circuit output is realized Buckling, it is simple in construction so as to realize quick charge, it disclosure satisfy that people's demand.

Brief description of the drawings

Fig. 1 is circuit theory schematic diagram of the present utility model.

Fig. 2 is to apply charging wire structural representation of the present utility model.

Fig. 3 is local interior's structural representation of Fig. 2 charging wire.

Embodiment

The utility model is further described below in conjunction with the accompanying drawings.

See Fig. 1, the utility model includes processor U1, and processor U1 uses FP6719 model chips, processor U1 OUT End is connected to power output end VOUT, and three electric capacity C3, C4, C7 are parallel between processor U1 OUT terminal and ground；Processor U1 HVSS ends power output end VOUT is connected to by resistance R5, the electric capacity C5 of series connection, processor U1 is connected with USB interface；Place The D+ ends of device U1 D+ ends connection USB interface, the D- ends of processor U1 D- ends connection USB interface are managed, processor U1 connections are opened Pass control pin EN, switch control pin EN pin ground connection, a pin connect processor U1 EN ends, a pin connection processor U1 VIN ends, it is grounded after processor U1 VREG ends connection electric capacity C6, after processor U1 LX ends connection resistance R1, electric capacity C9 Ground connection, processor U1 LX ends connect connection VIN ends after inductance L1, three electricity are parallel between processor U1 VIN ends and ground Hold C1, C2, C10.

Wherein specific parameter is as follows, electric capacity C1:22uF, C2:0.1uF, C3:47uF, C4:0.1uF, C5: 4.7uF, C6:1uF, C7:47uF, C7:22uF, C10：22uF, inductance L1:1.5UH, resistance R1：1 Ω, R5:1Ω.

When the utility model charging circuit is connected on mobile phone, charging wire acquiescence be by D+ ends and D- ends short circuit, this Sample mobile phone is charged with the 5V voltages given tacit consent to, and then process is as follows：

If 1) mobile phone terminal has used fast charge protocol, system process starts, and loads 0.325V's on D+ ends Voltage is maintained for more than on 1.25s；

2) charging circuit detects that voltage 0.325V has been maintained for more than 1.25s on D+ ends, just disconnects the short of D+ ends and D- ends Connect, because D+ ends and D- ends disconnect, so the voltage on D- ends does not change followed by the voltage 0.325V on D+ ends, now D- ends On voltage begin to decline；

3) mobile phone terminal detects that voltage on D- ends is begun to decline from 0.325V when maintaining more than 1ms, and system process is read / sys/class/power_supply/usb/voltage_max value is taken, if 9000000mV, the electricity at D+ ends is just set Press as 3.3V, the voltage at D- ends is 0.6V, and it is 0.6V otherwise to set D+ ends, and D- ends are 0V；

4) after charging circuit detects the voltage on D+ ends and D- ends, charging circuit output voltage is just adjusted.

Output voltage is specifically：（1）D+ ends 0.6V, D- end 0.6V, 12V is exported,（2）D+ ends 3.3V, D- end 0.6V, output 9V,（3）D+ ends 3.3V, D- end 3.3V, 20V is exported,（4）D+ ends 0.6V, D- end 0V, export 5V.

Of the present utility model realized by foregoing circuit is quickly charged to mobile phone, and circuit structure is simple, meets people's demand.

See Fig. 2, Fig. 3, be the charging wire using foregoing circuit.The USB joint 1 of charging wire connects plastic head 2, plastic head 2 Connect electric wire, one end both sides that plastic head 2 is connected with electric wire have a lead angle 3 respectively, plastic head 2 by rectangle and trapezoidal combine and Into the form for making plastic head 2 gradually be reduced from USB joint one end to electric wire one end.Plastic head 2 and electric wire can thus be increased Between fitness, electric wire is passed by plastic head 2 when being drawn by external force, is protected electric wire not to be pulled off.

Quick-charging circuit plate 6 is installed, quick-charging circuit plate 6 uses aforementioned circuit in the plastic head 2 of charging wire；Modeling The trapezoidal opening position of rubber head 2 is wiring duct 7, due to using quick-charging circuit plate 6, so special wiring duct 7 is needed, and this Than common data line length by about one time, the length of plastic head 2 is also than common data wire for the quick-charging circuit plate 6 of utility model Length is by about one time.The face wiring duct 7 of male part 4.

The plastic head 2 of charging wire is formed by upper and lower two shell combinations, and evagination forms male part 4, male part 4 on housing Positioned at the rectangle of plastic head 2 and the opening position of trapezoidal combination, male part is connected with the housing side of plastic head 2 by inclined-plane 5.

Charging wire can further increase the cooperation between electric wire and plastic head 2 by the design on male part 4 and inclined-plane 5, External force is set quickly to be passed away.

Locating slot 8 is further opened with the side of the plastic head 2 of charging wire, facilitates housing to assemble.

Certainly, embodiment described above, simply preferred embodiments of the present utility model, not limit the utility model Practical range, therefore the equivalence changes done of all construction, feature and principles according to described in present utility model application the scope of the claims or repair Decorations, all should be included in present utility model application the scope of the claims.

Claims (1)

1. quick-charging circuit, it is characterised in that：Including processor, processor uses FP6719 model chips, the OUT of processor End is connected to power output end, and three electric capacity are parallel between the OUT terminal and ground of processor；The HVSS ends of processor pass through series connection Resistance, capacitance connection to power output end；Processor is connected with USB interface, the D+ of the D+ ends connection USB interface of processor End, the D- ends of the D- ends connection USB interface of processor；Processor connecting valve control pin, the pin ground connection of switch control pin, The EN ends of one pin connection processor, a pin connect the VIN ends of processor, are grounded after the VREG ends connection electric capacity of processor, The LX ends of processor are grounded after connecting resistance, electric capacity, and VIN ends, the VIN of processor are connected to after the LX ends connection inductance of processor Three electric capacity are parallel between end and ground.