CN105490333B - Quickly charging battery control circuit, adapter and mobile device - Google Patents
Quickly charging battery control circuit, adapter and mobile device Download PDFInfo
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- CN105490333B CN105490333B CN201510956503.0A CN201510956503A CN105490333B CN 105490333 B CN105490333 B CN 105490333B CN 201510956503 A CN201510956503 A CN 201510956503A CN 105490333 B CN105490333 B CN 105490333B
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- mobile device
- switching tube
- adapter
- feedback resistance
- operational amplifier
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- 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
- H02J7/007—Regulation of charging or discharging current or voltage
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention discloses a kind of quickly charging battery control circuits, including：The signal that adapter end is used to be fed back according to the cable end, sufficiently high voltage and sufficiently large electric current are provided to cable end；Mobile device end is used to first judge whether the voltage and current that cable end is transmitted reaches the preset voltage and current of charge management circuit, when being unable to reach, then by demand is sent to the adapter end by the cable end, then the adapter end adjusts power output according to the signal of feedback, until meeting the predetermined charge power of the mobile device end or reaching the peak power output of the adapter end；Cable end provides voltage and current circuit for connecting the adapter end and the mobile device end, while feeding back demand of the mobile device end to input voltage；The invention also discloses a kind of adapter and mobile devices, can omit the special handshake circuit between adapter and mobile device through the invention.
Description
Technical field
The invention belongs to technical field of power management, and in particular to a kind of quickly charging battery control circuit, adapter and
Mobile device.
Background technology
The development of hand-held intelligent mobile terminal and people are increasingly to its dependence, and quick rhythm of life, compels to make one in addition
Constantly pursue large capacity battery and its very fast recovery capability again after electricity exhausts.That is, large capacity is electric
The quick charge capability in pond is current power circuit manufacturer (including plate grade and chip-scale) urgent problem to be solved.
Fig. 1 is the quick charge control circuit of the prior art.Adapter (DFP) in figure is by cable to mobile device
(UFP) rechargeable energy is provided.Realize that quick charge provides powerful input it is necessary to adapter to mobile device.Due to suitable
Orchestration and mobile device are separation and are connected by cable end, and this three may be different producer and carry
It supplies, therefore, whether the power between them matches, and determines that can this batter-charghing system safely realize (maximum work
Rate) quick charge.
In the USB2.0 epoch, the cable terminal voltage VBUS to charging of mobile devices is 5V, and in the charging of VBUS and GND
Electric current on circuit has 100mA, 500mA, 900mA etc..Later after iPhone and its tablet computer occur, this charging electricity
Stream has had reached 1A or even 2.4A.It is at this time the difference by D+ in cable end and D- between adapter and mobile device
Combinations of voltages judges to find most suitable power to charge.
Still later, Qualcomm proposes the standard of QC2.0, and Apple Inc., TI (Texas Instrument) etc. are also in succession each to be picked up by oneself
Go out a kind of their new fast charge standard (agreement).In new standard, cable end 2 caused by order to overcome due to high current
Line loss is proposed the voltage of VBUS being increased to 9V, 12V, 20V.At this time, the matching between adapter and mobile device
Just seem more important.In these standards, communication handshake between the two still by the combinations of voltages of D+ and D- come
Judge.In the TYPE-C interfaces of nearest USB3.1, an also line CC is distinguished.
All these standards are taken a broad view of, is required for knowing that various manufacturers set logic to the voltage of D+, D-, CC, then not stop
Ground goes that the setting whether met between adapter and mobile device enumerated.This just needs on the basis of power management, respectively to exist
Adapter end and mobile device increase a handshake circuit.Especially in the rigid TYPE-C standards for promulgating soon, in cable end
In must all increase specialized protocol chip to realize the function of shaking hands.Since logical combination type is more, just cause a kind of special
Integrated circuit realize this handshake function.Not only increase entire charging system cost (needing two handshake circuits)；And
It is also possible that some setting logics are not included in the logic for chip circuit of shaking hands, it can not so as to cause failure is shaken hands
Charging, or be only guarantee safety and charged with minimum power.
Invention content
In view of this, the main purpose of the present invention is to provide a kind of quickly charging battery control circuit, adapter and shiftings
Dynamic equipment.
To reach the purpose, the technical proposal of the invention is realized in this way：
The embodiment of the present invention provides a kind of quickly charging battery control circuit, which includes adapter end, cable end, shifting
Dynamic equipment end；
The adapter end, the signal for being fed back according to the cable end provide sufficiently high to cable end
Voltage and sufficiently large electric current；
The mobile device end, for first judging it is pre- whether the voltage and current of cable end transmission reaches charge management circuit
Demand then will be sent to the adapter end, so by the voltage and current first set when being unable to reach by the cable end
The adapter end adjusts power output, the predetermined charge power until meeting the mobile device end according to the signal of feedback afterwards
Or reach the peak power output of the adapter end；
The cable end for connecting the adapter end and the mobile device end, and provides voltage and current circuit,
Feed back demand of the mobile device end to input voltage simultaneously.
In said program, the mobile device end, the voltage and current for being additionally operable to cable end transmission reaches Charge Management electricity
When the preset voltage and current in road, charge by current voltage, current versus cell.
The embodiment of the present invention also provides a kind of quickly charging battery control circuit, the circuit include adapter end, cable end,
Mobile device end, the adapter end are connect by cable end with mobile device end；
The adapter end includes the first operational amplifier, feedback resistance R1, feedback resistance R2, the feedback resistance R1's
The output end VOUT connections of first end and adapter end, second end are connected with the first end of feedback resistance R2, and described
Two ends are connected on the inverting input of the first operational amplifier, the GND of the second end and adapter end of the feedback resistance R2
End connection, the in-phase input end of first operational amplifier are connected to a reference voltage VREF1 in adapter end
On；
The cable end includes VBUS conducting wires, IDRV conducting wires, GND conducting wires；
The mobile device end include battery, charge management circuit, second operational amplifier, switching tube M1, switching tube M2,
Switching tube M3, the source electrode of the switching tube M1 is connected to ground terminal, and its grid is connected to the output end of second operational amplifier；Institute
The in-phase input end for stating second operational amplifier is connected to reference voltage source VREF2 in mobile device end, second operation
The inverting input FB2 connection feedback resistances R3 of amplifier, one end of feedback resistance R4, while this one end connecting valve pipe M2's
Drain electrode；Another positive supply input terminal VIN for terminating at mobile device end of the feedback resistance R3, the feedback resistance R4's is another
The drain electrode of one end then one end of feedback resistance R5, the source electrode of switching tube M2 and switching tube M3, the feedback resistance R5's is another
Terminate at one end of feedback resistance R6 and the source electrode of switching tube M3；Described the another of feedback resistance R6 terminates at mobile device end
The ground ends GND, the grid of the switching tube M2 is connected on an output end of charge management circuit, and the grid of the switching tube M3 connects
In another output end of charge management circuit；Another output of the charge management circuit terminates at the anode of battery, institute
The cathode for stating battery is connected on the ground ends GND of mobile device end；
The anode output OUT of the adapter end is connected to the anode of mobile device end by the VBUS conducting wires in cable end
Input terminal VIN, the circuit ground terminal GND of the adapter end are connected to the ground of mobile device end by the GND conducting wires in cable end
Input terminal GND, the inverting input FB1 of the first operational amplifier in the adapter end is held to be led by the IDRV in cable end
Line is connected to the drain electrode of the middle switching tube M1 of mobile device end.
In said program, the inverting input FB2 has been connected on the least significant end R6 of divider resistance, sets the switch of voltage
Pipe M2 and switching tube M3 are connected to the upper of inverting input FB2.
The embodiment of the present invention provides a kind of adapter, and the quick-charging circuit of the adapter end includes the first operation amplifier
The output end VOUT connections of device, feedback resistance R1, the first end of feedback resistance R2, the feedback resistance R1 and adapter end, the
Two ends are connected with the first end of feedback resistance R2, and the second end is connected to the inverting input of the first operational amplifier
On, the second end of the feedback resistance R2 and the ends GND of adapter end connect, the in-phase input end of first operational amplifier
It is connected on a reference voltage VREF1 in adapter end.
In said program, the anode output VOUT of the adapter end is connected with the cathode of Zener diode regulator D1, institute
The anode for stating Zener diode regulator D1 is connected on the inverting input FB1 of the first operational amplifier, is realized and feedback resistance R1
It is in parallel.
In said program, the anode output VOUT of the adapter end is connected with the drain electrode of switching tube M6, the switching tube
The source electrode of M6 is connected on the inverting input FB1 of the first operational amplifier, and grid is connected on feedback divider resistance R12 and feedback point
Another anode for terminating at adapter end of one end of piezoresistance R11, feedback divider resistance R12 exports on VOUT, feedback partial pressure
On another inverting input FB1 for terminating at the first operational amplifier of resistance R11.
In said program, the anode output VOUT of the adapter end is connected with the electric current inflow in Precision voltage reference source
End, electric current outflow terminate on the inverting input FB1 of the first operational amplifier, and voltage controling end is connected on feedback partial pressure electricity
It hinders R12 and feeds back one end of divider resistance R11, another anode for terminating at adapter end of the feedback divider resistance R12 is defeated
Go out on VOUT, on another inverting input FB1 for terminating at the first operational amplifier of the feedback divider resistance R11.
The embodiment of the present invention also provides a kind of mobile device, and the quick-charging circuit of the mobile device end includes battery, fills
Fulgurite manages circuit, second operational amplifier, switching tube M1, switching tube M2, switching tube M3, and the source electrode of the switching tube M1 is connected to
Ground terminal, and its grid is connected to the output end of second operational amplifier；The in-phase input end of the second operational amplifier connects
To the reference voltage source VREF2 in mobile device end, the inverting input FB2 connection feedback resistances of the second operational amplifier
One end of R3, feedback resistance R4, while the drain electrode of this one end connecting valve pipe M2；The another of the feedback resistance R3 terminates at shifting
The other end of positive supply the input terminal VIN, the feedback resistance R4 of dynamic equipment end then one end of feedback resistance R5, switching tube M2
Source electrode and switching tube M3 drain electrode, another one end for terminating at feedback resistance R6 of the feedback resistance R5 and switching tube M3
Source electrode；Another ground ends GND for terminating at mobile device end of the feedback resistance R6, the grid of the switching tube M2, which is connected on, to be filled
Fulgurite manages an output end of circuit, and the grid of the switching tube M3 is connected on another output end of charge management circuit；It is described
Another output of charge management circuit terminates at the anode of battery, and the cathode of the battery is connected on the ground GND of mobile device end
End.
In said program, the inverting input FB2 has been connected on the least significant end R6 of divider resistance, sets the switch of voltage
Pipe M2 and switching tube M3 are connected to the upper of inverting input FB2.
Compared with prior art, beneficial effects of the present invention：
Under the premise of equally achieving the purpose that quick charge, the present invention can be omitted special between adapter and mobile device
With handshake circuit, as long as charge management circuit of the present invention is added in the Charge Management integrated circuit of mobile device end,
And original adapter design almost it goes without doing change, it is only necessary to which the Voltage Feedback input terminal in original adapter is reserved into interface
Come.
Description of the drawings
Fig. 1 is the battery charge control schematic diagram of the prior art；
Fig. 2 is a kind of circuit diagram of quickly charging battery control circuit provided in an embodiment of the present invention；
Fig. 3 is a kind of circuit diagram of adapter provided in an embodiment of the present invention；
Fig. 4 is the circuit diagram of another adapter provided in an embodiment of the present invention；
Fig. 5 is the circuit diagram of another adapter provided in an embodiment of the present invention；
Fig. 6 is the circuit diagram of another adapter provided in an embodiment of the present invention；
Fig. 7 is a kind of circuit diagram of mobile device end provided in an embodiment of the present invention；
Fig. 8 is the circuit diagram of another mobile device end provided in an embodiment of the present invention.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
The embodiment of the present invention provides a kind of quickly charging battery control circuit, the circuit include adapter end 1, cable end 2,
Mobile device end 3；
The adapter end 1, the signal for being fed back according to the cable end provide sufficiently high to cable end 2
Voltage and sufficiently large electric current；
The mobile device end 3, for first judging whether the voltage and current that cable end 2 is transmitted reaches charge management circuit
Demand then will be sent to the adapter end by preset voltage and current when being unable to reach by the cable end 2
1, then the adapter end 1 its power output is adjusted according to the signal of feedback, until meeting the predetermined of the mobile device end 3
Charge power or the peak power output for reaching the adapter end 1；
The cable end 2 for connecting the adapter end 1 and the mobile device end 3, and provides voltage and current and returns
Road, while feeding back demand of the mobile device end 3 to input voltage.
The mobile device end 3, the voltage and current for being additionally operable to the transmission of cable end 2 reach charge management circuit and preset
Voltage and current when, charged the battery by current voltage and current.
The embodiment of the present invention also provides a kind of quickly charging battery control circuit, as shown in Fig. 2, the circuit includes adapter
End 1, cable end 2, mobile device end 3, the adapter end 1 are connect by cable end 2 with mobile device end 3；
The adapter end 1, the signal for being fed back according to the cable end provide sufficiently high to cable end
Voltage and sufficiently large electric current.
The mobile device end 3, for first judging whether the voltage and current that cable end comes reaches charge management circuit
Preset voltage and current is charged the battery if meeting by current voltage and current；If conditions are not met, then will
Demand is sent to the adapter by the cable end, then the adapter adjusts power according to the signal of feedback
Output, until meeting the predetermined charge power of the mobile device or reaching the peak power output of the adapter.
The cable end 2 for connecting the adapter end 1 and the mobile device end 3, and provides voltage and current and returns
Road, while feeding back demand of the mobile device end 3 to input voltage.
The adapter end 1 includes the first operational amplifier 101, feedback resistance R1 104, feedback resistance R2105, described
The first end of feedback resistance R1 104 is connect with the output end VOUT of adapter end 1, and the of second end and feedback resistance R2 105
One end is connected, and the second end is connected on the inverting input of the first operational amplifier 101, the feedback resistance R2
105 second end is connect with the ends GND of adapter end 1, and the in-phase input end of first operational amplifier 101 is connected to adaptation
On a reference voltage VREF1 103 in device end 1；
The cable end 2 includes VBUS conducting wires 201, IDRV conducting wires 202, GND conducting wires 203；
The mobile device end 3 includes battery 310, charge management circuit 309, second operational amplifier 302, switching tube M1
301, the source electrode of switching tube M2 307, switching tube M3 308, the switching tube M1 301 are connected to ground terminal, and its grid is connected to
The output end of second operational amplifier 302；The in-phase input end of the second operational amplifier 302 is connected to mobile device end 3
In reference voltage source VREF2 304, the connection feedback resistances of inverting input FB2 303 of the second operational amplifier 302
One end of R3 306, feedback resistance R4 305, while the drain electrode of this one end connecting valve pipe M2 307；The feedback resistance R3
306 another positive supply input terminal VIN for terminating at mobile device end 3, the other end of the feedback resistance R4 305 are then anti-
The drain electrode of one end of feed resistance R5 312, the source electrode and switching tube M3 308 of switching tube M2 307, the feedback resistance R5's is another
One end is connected on one end of feedback resistance R6 311 and the source electrode of switching tube M3 308；The other end of the feedback resistance R6 311
The ground ends GND of mobile device end 3 are connected on, the grid of the switching tube M2 307 is connected on an output of charge management circuit 309
End, the grid of the switching tube M3 308 are connected on another output end of charge management circuit 309；The charge management circuit
309 another output terminates at the anode of battery 310, and the cathode of the battery 310 is connected on the ground ends GND of mobile device；
The anode output OUT of the adapter end 1 is connected to mobile device end 3 by the VBUS conducting wires 201 in cable end 2
Anode input terminal VIN, the circuit ground terminal GND of the adapter end 1 is connected to movement by the GND conducting wires 203 in cable end 2
The ground terminal input terminal GND of equipment end 3, the inverting input FB1 102 of the first operational amplifier 101 in the adapter end 1
The drain electrode of the middle switching tube M1 301 of mobile device end 3 is connected to by the IDRV conducting wires 202 in cable end 2.
The embodiment of the present invention also provides a kind of adapter, as shown in figure 3, the quick-charging circuit of the adapter end 1 includes
First operational amplifier 101, feedback resistance R1 104, feedback resistance R2 105, the first end of the feedback resistance R1 104 with
The output end VOUT connections of adapter end 1, second end is connected with the first end of feedback resistance R2105, and the second end
It is connected on the inverting input of the first operational amplifier 101, second end and the adapter end 1 of the feedback resistance R2 105
The ends GND connect, and the in-phase input end of first operational amplifier 101 is connected to a reference electricity in adapter end 1
It presses on VREF1 103.
As shown in figure 4, by leading to clamper of the realization of Zener diode regulator 106 to VOUT；The Zener diode regulator
The cathode of D1 106 has been connected on the anode output VOUT of adapter end 1, and the reverse phase that anode is connected on the first operational amplifier 101 is defeated
Enter to hold on FB1 102, realize in parallel with feedback resistance R1 104.When VOUT is more than to set voltage, that is, feed back divider resistance
When the voltage at 104 both ends R1 is more than setting value, Zener diode regulator D1 106 is connected, and being equivalent to reduces feedback partial pressure electricity
The impedance for hindering R1 104,102 voltage highs of inverting input FB1, to realize the voltage stabilizing clamper to VOUT.
As shown in figure 5, realizing the clamper to VOUT by switching tube M6 107；The drain electrode of switching tube M6 107 is connected on adaptation
On the anode output VOUT at device end 1, source electrode is connected on the inverting input FB1 102 of the first operational amplifier 101, and grid connects
In one end of feedback divider resistance R12 109 and feedback divider resistance R11 110, the other end of feedback divider resistance R12 109
It is connected on the anode output VOUT of adapter, the another of feedback divider resistance R11 110 terminates at the anti-of the first operational amplifier
On phase input terminal FB1 102.
As shown in fig. 6, realizing the clamper to VOUT by accurate voltage-reference 108；Precision voltage reference source 108
Electric current flows on the anode output VOUT for terminating at adapter end 1, and electric current flows out the reverse phase for terminating at the first operational amplifier
On input terminal FB1 102, voltage controling end (pressure feedback port) is connected on feedback divider resistance R12 109 and feedback divider resistance
Another anode for terminating at adapter of one end of R11 110, feedback divider resistance R12 109 exports on VOUT, feedback partial pressure
On another inverting input FB1 102 for terminating at the first operational amplifier of resistance R11 110.
The operation principle of the switching tube M6 107 is essentially the same with voltage-reference 108, but switching tube M6 107
Its threshold voltage is used, for those skilled in the art, is aware that the variation of the threshold voltage of switching tube M6 107
Range is bigger, and service condition will regard the design accuracy and voltage endurance capability of adapter end 1, and the essence of voltage-reference 108
Degree is just very high, in order to illustrate problem, if the voltage-reference 108 is (but not limited to) LM431 reference circuits,
Reference voltage is 1.2V, then when the partial pressure of resistance R11 110 and resistance R12 109 is equal to 1.2V, voltage-reference 108 is led
Logical, such VOUT energy overvoltage a reference source 108 provides electric current to IDRV, to reduce leakage resistance R11 110 and resistance R12
109 electric current also just realizes the restriction to output voltage.
The embodiment of the present invention also provides a kind of mobile device end, as shown in fig. 7, the quick charge electricity of the mobile device end 3
Road includes battery 310, charge management circuit 309, second operational amplifier 302, switching tube M1301, switching tube M2 307, switch
The source electrode of pipe M3 308, the switching tube M1 301 are connected to ground terminal, and its grid is connected to the defeated of second operational amplifier 302
Outlet；The in-phase input end of the second operational amplifier 302 is connected to the reference voltage source VREF2 in mobile device end 3
304, the connection feedback resistances of inverting input FB2 303 R3 306, the feedback resistance R4 305 of the second operational amplifier 302
One end, while the drain electrode of this one end connecting valve pipe M2 307；The another of the feedback resistance R3 306 terminates at mobile set
The other end of positive supply the input terminal VIN, the feedback resistance R4 305 at standby end 3 then one end of feedback resistance R5 312, open
The drain electrode of the source electrode and switching tube M3 308 of pipe M2 307 is closed, the another of the feedback resistance R5 terminates at feedback resistance R6 311
One end and switching tube M3 308 source electrode；Another ground GND for terminating at mobile device end 3 of the feedback resistance R6 311
End, the grid of the switching tube M2 307 are connected on an output end of charge management circuit 309, the grid of the switching tube M3 308
Pole is connected on another output end of charge management circuit 309；Another output of the charge management circuit 309 terminates at battery
The cathode of 310 anode, the battery 310 is connected on the ground ends GND of mobile device.
As shown in figure 8, the voltage detecting and setting section another kind in the mobile device end 3 set form.But it is unlimited
In this, inverting input FB2 303 has been connected on the least significant end R6 311 of divider resistance.Set voltage switching tube M2 307 and
Switching tube M3 308 is connected to the upper of inverting input FB2 303, operation principle in Fig. 2 be the same, only relational expression
Changed.PMOS tube, bipolar tube etc. may be used in the switching tube M2 307 and switching tube M3 308.
After adapter end 1 is linked together by cable end 2 and mobile device end 3, the VBUS201 voltages in circuit
To be the input voltage VIN phase with output voltage VO UT and mobile device end 3 with adapter end 1 in the case of no line loss
Deng.In order to former generation product compatibility and protection, the default voltage of VBUS 201 be 5V.By feedback resistance R3 306, feedback
The electricity that resistance R4 305, feedback resistance R5 312, feedback resistance R6 311 and switching tube M2 307 and switching tube M3 308 are formed
Potential-divider network is pressed, the voltage of VBUS 201 in circuit will be detected, second is connected to after the inverting input FB2 303 after partial pressure
The inverting input of operational amplifier 302.Charge management circuit 309 can be according to respective setting demand come configuration switch pipe M2
The state of the Push And Release of 307 and switching tube M3 308, to change intrinsic standoff ratio.
When initial, switching tube M2 307 and switching tube M3 308 are off.Therefore, FB2=(R6+R4+ at this time
R5)/R6+R4+R5+R3) * VBUS, it is 5V that setting charges required input voltage also at this time.At this moment, charge management circuit 309 is examined
Input voltage has been measured, has just carried out judging the state of battery 310, decides whether to charge, has been which stage carried out
Charging.It is if it is judging result, it is only necessary to which a low current charges, the charging of such as less than 500mA (value without being limited thereto)
Electric current, then the just setting of maintenance at this time of charge management circuit 309, charges the battery.If charge management circuit 309 judges
As a result the electric current of a bigger is needed, such as larger than 1 ampere (value without being limited thereto), then charge management circuit 309 is by on-off switching tube
M2 307 or and switching tube M3 308.For apparent this relationship of explanation, it is assumed that VREF2304=1.2V is set in whole system
In meter, second operational amplifier 302 is in linear work area, therefore has inverting input FB2 303=reference voltage sources VREF2
304=1.2V.Therefore charge management circuit 309 can be obtained by the switching tube M2 307 and switching tube M3 308 that is turned on or off
To following four kinds of relationships：
A:M2, M3 are disconnected, VBUS=(1+R3/ (R4+R5+R6)) * 1.2V=5V
B:M2 is disconnected, M3 conductings, VBUS=(1+R3/ (R4+R6)) * 1.2V=9V
C:M2 is connected, and M3 is disconnected, VBUS=(1+R3/ (R5+R6)) * 1.2V=12V
D:M2, M3 are connected, VBUS=(1+R3/R6) * 1.2V=20V
By taking charge management circuit 309 judges to need the B kind situations as an example, VBUS=5V at the beginning, therefore reverse phase is defeated
Enter to hold 303 voltages of FB2 to be less than 1.2V so that the output of second operational amplifier 302 is height, and driving switch pipe M1 301 is connected,
The electric current IDRV202 for flowing through switching tube M1 301, will also flow through feedback resistance R1 104 so that VOUT=(1+R1/R2
(105)) * VREF1 (103)+IDRV*R1, wherein (1+R1/R2) * VREF1=5V are the output setting of adapter acquiescence, so
VOUT=5V+IDRV*R1, therefore, the output of VOUT can be adjusted by adjusting IDRV, that is, have adjusted VBUS201 and VIN.Directly
It is equal to the voltage of reference voltage source VREF2 304 to the voltage of inverting input FB2 303, mobile set is improved to reach
The input voltage at standby end 3, that is, in the case where keeping small input current I_VBUS, improve charge function, realize
Quick charge.
In conjunction with Fig. 2 and the analysis, it is found that the present invention can eliminate VBUS lines and reaches the standard grade automatically undermines USB interface
Contact loss, to ensure the input voltage of charge management circuit 309 be setting need such as 9V.And it no longer will be in adapter end
1 do here it is impedance-compensated.
If there is adapter end 1 the demand that mobile device end 3 can not reached when, inverting input FB2303 voltages
Value is lower than reference voltage source VREF2 304, and IDRV can be in always a relatively high value, at this moment can be inverting input FB1
102 drag down, this working ranges of the VOUT beyond adapter end 1 will occur.For example, mobile device end 3 needs input voltage VBUS
=20V, and the ceiling voltage of adapter end 1 can only export 9V.When there is such case, one is adapters itself originally with regard to band
There is output over-voltage protection function.In another situation, originally the design of adapter not band output over-voltage protection function, then
Simple realized in the case where not changing original design substantially proposed in Fig. 3 including but not limited to three kinds limits output voltage
The function of overvoltage.Certainly, the electric current IDRV of M1 301 should be limited there are one electric current in the design in 3 end of mobile device end,
Such as limitation maximum 5mA (value without being limited thereto).
In the embodiment of the present invention, 4 kinds of combinations of voltages are provided only, this is only for the purpose of illustrating the invention, actually
There is no restrictions there was only this 4 kinds of situations by the present invention, and circuit is can infinitely to be set according to engineer or customer demand
Determine the voltage required by mobile device, and adapter can in the range of its permission voltage needed for output mobile equipment.As fitted
The maximum exportable voltage of orchestration is 36V, and when mobile device demand input voltage is 33.3V, then being using the present invention can be with
Easily realize.
The circuit that the embodiment of the present invention is supplied can automatically and efficiently realize the power match of charging system, to improve
Compatibility between Liao Ge equipment vendors, while the cost of entire charging system is reduced again.
Adapter end 1 as described herein, including but not limited to computer USB export, the output of mobile power and other band OTG
Mobile device.The mobile device end 3, including but not limited to mobile phone, tablet computer, input, POS machine of mobile power etc.
Other equipment for needing to charge using battery.Quick-charging circuit of the present invention can be integrated in the integrated of Charge Management
In circuit, can also individually it build.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (4)
1. a kind of quickly charging battery control circuit, which is characterized in that the circuit includes adapter end（1）, cable end（2）, move
Dynamic equipment end（3）, the adapter end（1）Pass through cable end（2）With mobile device end（3）Connection；
The adapter end（1）Including the first operational amplifier（101）, feedback resistance R1（104）, feedback resistance R2（105）, institute
State feedback resistance R1（104）First end and adapter end（1）Output end VOUT connections, second end and feedback resistance R2
（105）First end be connected, and the second end is connected to the first operational amplifier（101）Inverting input on, institute
State feedback resistance R2（105）Second end and adapter end（1）The ends GND connection, first operational amplifier（101）It is same
Phase input terminal is connected to adapter end（1）In a reference voltage VREF1（103）On；
The cable end（2）Including VBUS conducting wires（201）, IDRV conducting wires（202）, GND conducting wires（203）；
The mobile device end（3）Including battery（310）, charge management circuit（309）, second operational amplifier（302）, switch
Pipe M1（301）, switching tube M2（307）, switching tube M3（308）, the switching tube M1（301）Source electrode be connected to ground terminal, and its
Grid is connected to second operational amplifier（302）Output end；The second operational amplifier（302）In-phase input end connection
To mobile device end（3）In reference voltage source VREF2（304）, the second operational amplifier（302）Inverting input
FB2（303）Connect feedback resistance R3（306）, feedback resistance R4（305）One end, while this one end connecting valve pipe M2（307）
Drain electrode；Described the another of feedback resistance R3 (306) terminates at mobile device end（3）Positive supply input terminal VIN, the feedback
Resistance R4（305）The other end then feedback resistance R5（312）One end, switching tube M2（307）Source electrode and switching tube M3
（308）Drain electrode, the another of the feedback resistance R5 terminate at feedback resistance R6（311）One end and switching tube M3（308）
Source electrode；The feedback resistance R6（311）Another terminate at mobile device end（3）The ground ends GND, the switching tube M2
（307）Grid be connected on charge management circuit（309）An output end, the switching tube M3（308）Grid be connected on charging
Manage circuit（309）Another output end；The charge management circuit（309）Another output terminate at battery（310）
Anode, the battery（310）Cathode be connected on mobile device end（3）The ground ends GND；
The adapter end（1）Anode output OUT pass through cable end（2）In VBUS conducting wires（201）It is connected to mobile device
End（3）Anode input terminal VIN, the adapter end（1）Circuit ground terminal GND pass through cable end（2）In GND conducting wires
（203）It is connected to mobile device end（3）Ground terminal input terminal GND, the adapter end（1）In the first operational amplifier
（101）Inverting input FB1（102）Pass through cable end（2）In IDRV conducting wires（202）It is connected to mobile device end（3）'s
Middle switching tube M1（301）Drain electrode.
2. quickly charging battery control circuit according to claim 1, it is characterised in that：The inverting input FB2
（303）It has been connected on the least significant end R6 of divider resistance（311）On, set the switching tube M2 of voltage（307）And switching tube M3（308）It connects
In inverting input FB2（303）On.
3. a kind of mobile device, which is characterized in that the mobile device end（3）Quick-charging circuit include battery（310）, charging
Manage circuit（309）, second operational amplifier（302）, switching tube M1（301）, switching tube M2（307）, switching tube M3（308）,
The switching tube M1（301）Source electrode be connected to ground terminal, and its grid is connected to second operational amplifier（302）Output end；
The second operational amplifier（302）In-phase input end be connected to mobile device end（3）In reference voltage source VREF2
（304）, the second operational amplifier（302）Inverting input FB2（303）Connect feedback resistance R3（306）, feedback resistance
R4（305）One end, while this one end connecting valve pipe M2（307）Drain electrode；Another termination of the feedback resistance R3 (306)
In mobile device end（3）Positive supply input terminal VIN, the feedback resistance R4（305）The other end then feedback resistance R5
（312）One end, switching tube M2（307）Source electrode and switching tube M3（308）Drain electrode, the feedback resistance R5（312）It is another
One end is connected on feedback resistance R6（311）One end and switching tube M3（308）Source electrode；The feedback resistance R6（311）It is another
One end is connected on mobile device end（3）The ground ends GND, the switching tube M2（307）Grid be connected on charge management circuit（309）'s
One output end, the switching tube M3（308）Grid be connected on charge management circuit（309）Another output end；It is described to fill
Fulgurite manages circuit（309）Another output terminate at battery（310）Anode, the battery（310）Cathode be connected on movement
Equipment end（3）The ground ends GND.
4. mobile device according to claim 3, it is characterised in that：The inverting input FB2（303）It has been connected on partial pressure
The least significant end R6 of resistance（311）On, set the switching tube M2 of voltage（307）And switching tube M3（308）It is connected to inverting input FB2
（303）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510956503.0A CN105490333B (en) | 2015-12-18 | 2015-12-18 | Quickly charging battery control circuit, adapter and mobile device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510956503.0A CN105490333B (en) | 2015-12-18 | 2015-12-18 | Quickly charging battery control circuit, adapter and mobile device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105490333A CN105490333A (en) | 2016-04-13 |
| CN105490333B true CN105490333B (en) | 2018-07-31 |
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ID=55677144
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510956503.0A Expired - Fee Related CN105490333B (en) | 2015-12-18 | 2015-12-18 | Quickly charging battery control circuit, adapter and mobile device |
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| Country | Link |
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| CN (1) | CN105490333B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019178758A1 (en) * | 2018-03-21 | 2019-09-26 | 福建联迪商用设备有限公司 | Method and adapter for charging specific host |
| CN113178923A (en) * | 2021-05-14 | 2021-07-27 | 广东小天才科技有限公司 | Charging device |
| CN115224778B (en) * | 2022-08-31 | 2022-11-29 | 成都市易冲半导体有限公司 | Self-adaptive discharging circuit and discharging method for charging adapter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013105825A2 (en) * | 2012-01-12 | 2013-07-18 | Ju Jingwan | Charge/discharge conversion device using secondary batteries |
| CN204376473U (en) * | 2015-01-22 | 2015-06-03 | 上海海尔集成电路有限公司 | Portable power source |
| CN104767406B (en) * | 2015-03-25 | 2018-04-27 | 青岛歌尔声学科技有限公司 | A kind of power supply adaptor and the power-supply system with the power supply adaptor |
| CN104993562B (en) * | 2015-08-05 | 2017-12-05 | 青岛海信移动通信技术股份有限公司 | Can directly be charged source adapter |
| CN204886902U (en) * | 2015-09-07 | 2015-12-16 | 衢州市沃思电子技术有限公司 | Pulse width modulator |
| CN105140583B (en) * | 2015-09-17 | 2018-01-30 | 珠海市一微半导体有限公司 | Fast charge method based on USB port |
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| Publication number | Publication date |
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| CN105490333A (en) | 2016-04-13 |
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