CN101662162A - Current amplification quick charge circuit used for hand-hold electronic device - Google Patents
Current amplification quick charge circuit used for hand-hold electronic device Download PDFInfo
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- CN101662162A CN101662162A CN200910105271A CN200910105271A CN101662162A CN 101662162 A CN101662162 A CN 101662162A CN 200910105271 A CN200910105271 A CN 200910105271A CN 200910105271 A CN200910105271 A CN 200910105271A CN 101662162 A CN101662162 A CN 101662162A
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Abstract
A current amplification quick charge circuit used for a hand-hold electronic device comprises a charge management module which is integrated inside a master chip of the hand-hold electronic device orembedded independently, and a rechargeable battery, particularly comprises a basic charging current sampling resistor, a current amplification charging current sampling resistor and a comparation current amplification module; and when the charge management module charges the rechargeable battery, the comparation current amplification module outputs the amplified current from a current amplificaiton output port according to the voltage difference between two comparing input ports. The current amplification quick charge circuit has simple structure, occupies small space of a printed circuit board, greatly improves the practical charging current to the rechargeable battery according to proportion by the two sampling resistors and the comparation current amplification module, improves chargingspeed, satisfies the charging requirement to high-capacity rechargeable batteries, simultaneously keeps the charge management module to conduct three-stage charge, namely, low current precharge stage, constant current charge stage and constant voltage charge stage, to the rechargeable battery, and is beneficial to maintaining the service life of the rechargeable battery.
Description
Technical field
The present invention relates to be used for the charging device of rechargeable battery, particularly relate to the expansion current charge circuit of the charge management module that is applicable to hand-hold electronic device.
Background technology
The development of advancing by leaps and bounds along with multimedia technology, Bluetooth technology, radio network technique etc., occur multiple hand-hold electronic device on the market, comprised internet radio, bluetooth handsfree device, portable electronic device, mobile communication terminal, global position system GPS, handheld instrument and palmtop PC PDA.Described hand-hold electronic device generally all built-in rechargeable battery as power supply; For matching battery rationally charges, this hand-hold electronic device also disposes charge management module separately or integrated charge administration module in master chip simultaneously.In order to satisfy miniaturization and portable requirement, it is more and more littler that described hand-hold electronic device offers the space of printed circuit board (PCB) and chip, consider the chip cooling problem simultaneously, the charging current majority that the small-sized charge management module of prior art can provide is very little, generally below 100mA, charging rate is restricted, thereby the capacity of described rechargeable battery is also all smaller.But,, require rechargeable battery that big as far as possible capacity is arranged for portability easy to use and satisfied.The demand of the big capacity rechargeable battery of this configuration and the too little formation contradiction of the fan-out capability of charge management module.
In order to solve this contradiction, prior art proposes two kinds of solutions: the first, do not use described charge management module, and special-purpose charging management chip is set separately in described hand-hold electronic device, as shown in Figure 4, adopt the charging management chip of similar LTC4054; The second, if the charging current of the charging management chip in first scheme still can not meet the demands, as shown in Figure 5, on the first scheme basis, increase complicated expansion current circuit, with further increase charging current.
Above-mentioned two kinds of schemes exist following defective and weak point:
1. use special-purpose charge management module, cause the wasting of resources; Make the master chip of described hand-hold electronic device monitor charged state simultaneously by this charge management module;
2. current circuit is expanded in configure dedicated charging management chip and adding, has increased the cost of described hand-hold electronic device; And the complicated expansion current circuit of configuration, cause the printed circuit board (PCB) increase that takes up room, do not meet the portable development trend of hand-hold electronic device miniaturization; And the special charging managing chip of these increases and expand current circuit and need manual debugging, increased production cost; And charging current is not program-controlled, can not implement three sections chargings in little pre-charge electricity stage, constant current charge stage, constant voltage charge stage to rechargeable battery, influences the rechargeable battery life-span.
Summary of the invention
The technical problem to be solved in the present invention is to avoid the deficiencies in the prior art part and a kind of general, low-cost and easy current amplification quick charge circuit that is used for hand-hold electronic device is provided, the charging current of former built-in charge management module is enlarged by designated ratio, and do not brought other negative effect for circuit.
The present invention solve the technical problem can be by realizing by the following technical solutions:
Design, a kind of current amplification quick charge circuit that is used for hand-hold electronic device of manufacturing, comprise in the master chip that is integrated in described hand-hold electronic device or independent built-in charge management module, and rechargeable battery, described charge management module comprises charge power supply input port and charging current output port; Especially, also comprise basic charging current sampling resistor, expand the current charge current sampling resistor and relatively expand flow module; The described flow module that relatively expands comprises that driving power input port, first compares input port, second relatively input port and expansion stream output port; The resistance of described basic charging current sampling resistor is greater than the resistance that expands the current charge current sampling resistor; Described basic charging current sampling resistor one end is electrically connected rechargeable battery, and the other end is electrically connected relatively input port of charging current output port and second simultaneously; Described expansion current charge current sampling resistor one end is electrically connected rechargeable battery, the other end is electrically connected first simultaneously and compares input port and expand the stream output port, and described charge power supply input port and driving power input port all are electrically connected with the charge power supply input port of hand-hold electronic device; When charge management module was charged to rechargeable battery, the described flow module that relatively expands compared the relatively voltage difference between the input port of input port and second according to first, from expanding the extended electric current of stream output port output.
The charging current output port of described charge management module is programme controlled charging current output port, described charge management module is controlled the charging current value of described charging current output port output by stages according to the terminal voltage value of rechargeable battery institute reserve of electricity performance.
The described flow module that relatively expands also comprises the power isolation module that is connected electrically in the driving power input, is used for when not having the charge power supply input, and the discharging current of isolating described rechargeable battery flows into the described flow module that relatively expands.
The described flow module that relatively expands also comprises and is connected electrically in the second input offset compensation module of input port relatively, is used to prevent that the imbalance pressure reduction that exists between described each input port of expansion flow module from causing expands the output of stream output slip of the tongue and enlarge electric current.
Particularly, the described flow module that relatively expands also comprises rail-to-rail comparison/operational amplifier, first triode, second triode, the 3rd resistance and the 4th resistance; The power input of described rail-to-rail comparison/operational amplifier is electrically connected described driving power input and ground connection respectively, its inverting input "-" is electrically connected described second and compares input port, and its in-phase input end "+" is electrically connected described first and compares input port; Described the 3rd resistance is connected electrically between the base stage of the output of rail-to-rail comparison/operational amplifier and first triode; The grounded collector of described first triode, the emitter of this first triode is electrically connected the base stage of second triode respectively, and the emitter that is electrically connected second triode by the 4th resistance; The emitter of described second triode also is electrically connected described driving power input, and the collector electrode of this second triode is electrically connected described expansion stream output port.
Described power isolation module comprises diode, the 3rd triode, the 5th resistance and the 6th resistance; The positive supply input of described rail-to-rail comparison/operational amplifier connects described driving power input by diode electrically, and the negative supply input of this rail-to-rail comparison/operational amplifier is electrically connected the collector electrode of the 3rd triode; Described the 5th resistance and the 6th resistance are connected across between driving power input and the ground and constitute voltage divider, and concatenation points is electrically connected the base stage of the 3rd triode in the middle of it.
Described input offset compensation module comprises the 7th resistance and the 8th resistance; Described the 7th resistance is connected electrically in second and compares between the inverting input "-" of input port and rail-to-rail comparison/operational amplifier; Described the 8th resistance is connected electrically between the inverting input "-" and negative supply input of rail-to-rail comparison/operational amplifier.
Described hand-held device comprises internet radio, bluetooth handsfree device, portable electronic device, mobile communication terminal, global position system GPS, handheld instrument and individual palmtop PC PDA.
Compare with prior art, the present invention's's " current amplification quick charge circuit that is used for hand-hold electronic device " technique effect is:
1. current amplification quick charge circuit of the present invention is simple in structure, it is little to take printed circuit board space, utilize charge management module, by two sampling resistors with relatively expand flow module and significantly improve actual charge current to rechargeable battery, improved charging rate, satisfied charging requirement big capacity rechargeable battery;
2. the master chip of hand-hold electronic device of the present invention can be monitored charged state by charge management module, can implement three sections chargings in little pre-charge electricity stage, constant current charge stage, constant voltage charge stage to rechargeable battery, be beneficial to and safeguard the rechargeable battery life-span;
3. power isolation module of the present invention is isolated charge power supply, and the master chip to described hand-hold electronic device when not charging does not influence; Described input offset compensation module effectively prevents the mistake charging to rechargeable battery.
Description of drawings
Fig. 1 is the electric schematic block diagram of the present invention's " current amplification quick charge circuit that is used for hand-hold electronic device ";
Fig. 2 is the electric schematic block diagram that the present invention relates to another quick-charging circuit;
Fig. 3 is the circuit theory schematic diagram of the preferred embodiment of the present invention;
Fig. 4 is the circuit diagram of prior art special charging management circuit;
Fig. 5 is that prior art has the special charging management circuit schematic diagram that expands current circuit.
Embodiment
Be described in further detail below in conjunction with preferred embodiment shown in the accompanying drawing.
The present invention relates to a kind of current amplification quick charge circuit that is used for hand-hold electronic device, as shown in Figure 1, comprise in the master chip that is integrated in described hand-hold electronic device or independent built-in charge management module 100, and rechargeable battery 300, described charge management module 100 comprises charge power supply input port I
VCWith charging current output port O
IEspecially, also comprise basic charging current sampling resistor R
1, expand current charge current sampling resistor R
2Relatively expand flow module 400; The described flow module 400 that relatively expands comprises driving power input port I
VE, the first input port I relatively
1, the second input port I relatively
2Flow output port O with expanding
LDescribed basic charging current sampling resistor R
1Resistance greater than expanding current charge current sampling resistor R
2Resistance; Described basic charging current sampling resistor R
1One end is electrically connected rechargeable battery 300, and the other end is electrically connected charging current output port O simultaneously
IWith the second comparison input port I
2Described expansion current charge current sampling resistor R
2One end is electrically connected rechargeable battery 300, and the other end is electrically connected first simultaneously and compares input port I
1Flow output port O with expanding
L, described charge power supply input port I
VCWith driving power input port I
VEAll be electrically connected with the charge power supply input port 700 of hand-hold electronic device; When 300 chargings of 100 pairs of rechargeable batteries of charge management module, the described flow module 400 that relatively expands compares input port I according to first
1With the second comparison input port I
2Between voltage difference, from expanding stream output port O
LExport extended electric current.
The charge power supply input port 700 of described hand-hold electronic device is meant that all can and relatively expand the port that flow module 400 provides charging voltage for charge management module 100, comprise specially for the charge power supply input port of external charger arrangement and not only transmitted data but also the port of charging voltage is provided, for example, the USB interface of hand-hold electronic device.When charge power supply inserts described charge power supply input port, for charge management module 100 with relatively expand flow module 400 supply voltage is provided, to start this two module to rechargeable battery 300 chargings; When not having charge power supply to insert described charge power supply input port, because charge management module 100 and relatively expand flow module 400 power supply of losing the job, described rechargeable battery 300 will be in discharge condition, for hand-hold electronic device provides power supply.
As mentioned above, described basic charging current sampling resistor R
1Resistance greater than expanding current charge current sampling resistor R
2Resistance, the described expansion stream electric current that relatively expands flow module 400 output is intended to eliminate the voltage difference between two sampling resistors, when entire circuit was stablized, the voltage U on two sampling resistors was identical, the actual charge current I of described rechargeable battery 300
CBe,
This actual charge current I so
CWith flow through sampling resistor R
1Basic charging current I
BRatio be,
Therefore, the expansion of described current amplification quick charge circuit stream multiple is 1+R
1/ R
2, select suitable sampling resistor value as required, make the basic charging current I of described charge management module 100
BSignificantly rise to described actual charge current I
C, improved charging rate, satisfied requirement to big capacity rechargeable battery 300 charging rates.
Hand-held device of the present invention comprises internet radio, bluetooth handsfree device, portable electronic device, mobile communication terminal, global position system GPS, handheld instrument and individual palmtop PC PDA; Described portable electronic device comprises Mp3 formatted file player and Mp4 formatted file player.
In addition, the charging current output port O of described charge management module 100
IIt should be programme controlled charging current output port, described charge management module is controlled described charging current output port O according to the terminal voltage value of 300 reserve of electricity performances of rechargeable battery by stages by little pre-charge electricity stage, constant current charge stage and constant voltage charge stage
IThe charging current value of output.
In order to prevent the described master chip operate as normal that current charge module 400 influences hand-hold electronic device that relatively expands, the described flow module 400 that relatively expands also comprises and is connected electrically in driving power input I
VE Power isolation module 500, be used for there be not charge power supply when input, the discharging current of isolating described rechargeable battery 300 flows into the described flow module 400 that relatively expands and produces leakage currents.
For guarantee described relatively expand flow module 400 reliably by, the described flow module 400 that relatively expands also comprises and is connected electrically in the second input port I relatively
2Input offset compensation module 600, be used to prevent that the imbalance pressure reduction that exists between described expansion flow module 400 each input port from causing expands stream output port O
LMistake output enlarges electric current, causes rechargeable battery 300 to be overcharged.
Below further specify the course of work of described current amplification quick charge circuit by the preferred embodiment of the present invention.As shown in Figure 3, the described flow module 400 that relatively expands comprises rail-to-rail comparison/operational amplifier 410, the first triode Q
1, the second triode Q
2, the 3rd resistance R
3With the 4th resistance R
4Described " rail-to-rail " refers to " rail to rail ", rail-to-rail comparison/operational amplifier also can be described as " full the amplitude of oscillation " comparison/operational amplifier so, is meant that the voltage amplitude of comparison/operational amplifier input and output is approaching or reaches the supply voltage amplitude of this comparison/operational amplifier.The power input of described rail-to-rail comparison/operational amplifier 410 is electrically connected described driving power input I respectively
VEAnd ground connection, its inverting input "-" is electrically connected described second and compares input port I
2, its in-phase input end "+" is electrically connected described first and compares input port I
1Described the 3rd resistance R
3Be connected electrically in the output and the first triode Q of rail-to-rail comparison/operational amplifier 410
1Base stage between; The described first triode Q
1Grounded collector, this first triode Q
1Emitter be electrically connected the second triode Q respectively
2Base stage, and by the 4th resistance R
4Be electrically connected the second triode Q
2Emitter; The described second triode Q
2Emitter also be electrically connected described driving power input I
VE, this second triode Q
2Collector electrode be electrically connected described expansion stream output port O
LDescribed power isolation module 500 comprises diode D, the 3rd triode Q
3, the 5th resistance R
5With the 6th resistance R
6The positive supply input V of described rail-to-rail comparison/operational amplifier 410
+Be electrically connected described driving power input I by diode D
VE, the negative supply input V of this rail-to-rail comparison/operational amplifier 410
-Be electrically connected the 3rd triode Q
3Collector electrode; Described the 3rd triode Q
3Grounded emitter; Described the 5th resistance R
5With the 6th resistance R
6Be connected across driving power input I
VEAnd constituting voltage divider between the ground, concatenation points is electrically connected the 3rd triode Q in the middle of it
3Base stage.The preferred embodiment of the present invention, described diode D is a Schottky diode.Described input offset compensation module 600 comprises the 7th resistance R
7With the 8th resistance R
8Described the 7th resistance R
7Be connected electrically in second and compare input port I
2And between the inverting input "-" of rail-to-rail comparison/operational amplifier 410; Described the 8th resistance R
8Be connected electrically in the inverting input "-" and negative supply input V of rail-to-rail comparison/operational amplifier 410
-Between.
The parameter of each device of the preferred embodiment of the present invention is as follows: R
1=0.47 Ω, R
2=0.051 Ω, R
3=2.7k Ω, R
4=100k Ω, R
5=100k Ω, R
6=100k Ω, R
7=130 Ω, R
8=100k Ω, the voltage of importing from the charge power supply input port 700 of described hand-hold electronic device is the charging voltage of direct current+5V, described charge management module 100 charging current output port O
IBe programme controlled charging current output port, the described first triode Q
1With the second triode Q
2Be the positive-negative-positive triode, described the 3rd triode Q
3It is NPN type triode.
The course of work of described current amplification quick charge circuit is as follows:
When described rechargeable battery 300 does not need to charge, the charge power supply input port I of described charge management module 100
VCRelatively expand the driving power input port I of flow module 400
VEBe input as zero, described Schottky diode D instead ends partially, described the 3rd triode Q
3Base potential be zero to cut-off, the described second triode Q
2The emitter current potential be zero to cut-off.If there is not described power isolation module 500, at this moment, the voltage of described rechargeable battery 300 can be by basic charging current sampling resistor R
1With expansion current charge current sampling resistor R
2Be added on two inputs of rail-to-rail comparison/operational amplifier 410, and the positive supply input V by rail-to-rail comparison/operational amplifier 410
+To charge power supply input port discharge, and the negative supply input V by rail-to-rail comparison/operational amplifier 410
-Form discharge loop, produce leakage current.For this reason, add described power isolation module 500, can prevent above-mentioned situation, thereby the described flow module 400 that relatively expands does not bring any power consumption, can not disturb the master chip of described hand-hold electronic device yet.
When excessive discharge, when the voltage of described rechargeable battery 300 is lower than 2.9V, from the charge power supply of the charge power supply input port 700 input direct current+5V of described hand-hold electronic device, described charge management module 100 begins charging, described programme controlled basic charging current output port O
IExport charging current stage by stage:
The 1. little pre-charge electricity stage, described charging current output port O
IThe basic preliminary filling electric current I of output 4.5mA
B, this basic preliminary filling electric current I
BFlow through basic charging current sampling resistor R
1, the pressure drop that produces 0.47 Ω * 4.5mA=2.115mV; At this moment, if expand current charge current sampling resistor R
2On do not have electric current, the output of rail-to-rail comparison/operational amplifier 410 will be with the first triode Q
1Base stage drag down, make the first triode Q
1With the second triode Q
2Conducting is from the second triode Q
2Collector electrode output expand the stream electric current I
ETo described expansion stream output port O
L, final, described expansion stream electric current I
EThe electric current of output is expanding current charge current sampling resistor R
2On also produce 2.115mV pressure drop, described rail-to-rail comparison/operational amplifier 410 just can further not strengthen the first triode Q
1Base current, it is stable that entire circuit reaches; At this moment, flow through expansion current charge current sampling resistor R
2Expansion stream electric current I
EBe 2.115mV/0.051 Ω=41.5mA, be about basic preliminary filling electric current I
B9 times of=4.5mA, the actual preliminary filling electric current I of described rechargeable battery 300
CBe 41.5mA+4.5mA=46mA, with basic preliminary filling electric current I
BOriginal 10 times have been expanded to.
2. constant current charge stage, the voltage of described rechargeable battery 300 of this stage between 2.9V～4.2V, described charging current output port O
IExport basic constant current charge electric current.With 1. described, the constant current charge electric current of described reality is amplified to 10 times of basic constant current charge electric current.
3. in the constant voltage charge stage, the voltage of described rechargeable battery 300 of this stage has reached 4.2V, described charging current output port O
IExport basic supplemental current.With 1. described, the supplemental current of described reality is amplified to 10 times of basic supplemental current.
When described rechargeable battery 300 is filled, the master chip of hand-hold electronic device control charge management module 100 stops charging, described charge power supply input port I
VCOutput still be+5V, but because basic charging current has dropped to zero, at charging current sampling resistor R substantially
1Last voltage is zero, so the second triode Q
2Output is expanded the stream electric current and is also dropped to zero.
If there is input offset voltage in described rail-to-rail comparison/operational amplifier 410, for example input offset voltage is ± 5mV, so when rail-to-rail comparison/operational amplifier 410 output is stablized, its inverting input "-" and in-phase input end "+" should have ± potential difference of 5mV.When the inverting input "-" of rail-to-rail comparison/operational amplifier 410 exceeds 5mV than in-phase input end "+", will cause flowing through expansion current charge current sampling resistor R
2On the current ratio desired value little, i.e. 5mV/0.051 Ω=98mA, this uses basic not influence to reality; When the inverting input "-" of rail-to-rail comparison/operational amplifier 410 during, will cause flowing through and expand current charge current sampling resistor R than the low 5mV of in-phase input end "+"
2On the current ratio desired value big, promptly 5mV/0.051 Ω=98mA that is to say, when the master chip of hand-hold electronic device control charge management module 100 has been finished charging, described charging current output port O
IOutput current be reduced to 0, flow through and expand current charge current sampling resistor R
2Expansion stream electric current still have 98mA, the mistake charging that this input offset voltage causes is unallowable.Therefore, the preferred embodiment of the present invention also is provided with and comprises the 5th resistance R
7With the 6th resistance R
8Input offset compensation module 600, as basic charging current sampling resistor R
1On pressure drop when reaching input offset voltage maximum, the inverting input "-" of rail-to-rail comparison/operational amplifier 410 equates with in-phase input end "+" current potential; As basic charging current sampling resistor R
1On pressure drop reach at 0 o'clock, the inverting input "-" of rail-to-rail comparison/operational amplifier 410 is low to moderate the very big absolute value of input offset voltage than in-phase input end "+", guarantee relatively to expand flow module 400 reliably by, prevent that rechargeable battery 300 from overcharging.
Claims (8)
1. current amplification quick charge circuit that is used for hand-hold electronic device, comprise in the master chip that is integrated in described hand-hold electronic device or independent built-in charge management module (100), and rechargeable battery (300), described charge management module (100) comprises charge power supply input port (I
VC) and charging current output port (O
1); It is characterized in that:
Also comprise basic charging current sampling resistor (R
1), expand current charge current sampling resistor (R
2) and relatively expand flow module (400); The described flow module (400) that relatively expands comprises driving power input port (I
VE), the first input port (I relatively
1), the second input port (I relatively
2) and expand stream output port (O
L); Described basic charging current sampling resistor (R
1) resistance greater than expanding current charge current sampling resistor (R
2) resistance;
Described basic charging current sampling resistor (R
1) end electrical connection rechargeable battery (300), the other end is electrically connected charging current output port (O simultaneously
I) and the second comparison input port (I
2); Described expansion current charge current sampling resistor (R
2) end electrical connection rechargeable battery (300), the other end is electrically connected first simultaneously and compares input port (I
1) and expand stream output port (O
L), described charge power supply input port (I
VC) and driving power input port (I
VE) all be electrically connected with the charge power supply input port (700) of hand-hold electronic device;
When charge management module (100) was charged to rechargeable battery (300), the described flow module (400) that relatively expands compared input port (I according to first
1) and the second comparison input port (I
2) between voltage difference, from expanding stream output port (O
L) the extended electric current of output.
2. the current amplification quick charge circuit that is used for hand-hold electronic device according to claim 1 is characterized in that:
Charging current output port (the O of described charge management module (100)
I) be programme controlled charging current output port, described charge management module is controlled described charging current output port (O by stages according to the terminal voltage value of rechargeable battery (300) institute reserve of electricity performance
I) output charging current value.
3. the current amplification quick charge circuit that is used for hand-hold electronic device according to claim 1 is characterized in that:
The described flow module (400) that relatively expands also comprises and is connected electrically in driving power input (I
VE) power isolation module (500), be used for there be not charge power supply when input, the discharging current of isolating described rechargeable battery (300) flows into the described flow module (400) that relatively expands.
4. the current amplification quick charge circuit that is used for hand-hold electronic device according to claim 1 is characterized in that:
The described flow module (400) that relatively expands comprises that also being connected electrically in second compares input port (I
2) input offset compensation module (600), be used to prevent that the imbalance pressure reduction that exists between each input port of described expansion flow module (400) from causing expands stream output port (O
L) mistake output expansion electric current.
5. the current amplification quick charge circuit that is used for hand-hold electronic device according to claim 1 is characterized in that:
The described flow module (400) that relatively expands also comprises rail-to-rail comparison/operational amplifier (410), the first triode (Q
1), the second triode (Q
2), the 3rd resistance (R
3) and the 4th resistance (R
4);
Power input (the V of described rail-to-rail comparison/operational amplifier (410)
+, V
-) be electrically connected described driving power input (I respectively
VE) and ground connection, its inverting input "-" is electrically connected described second and compares input port (I
2), its in-phase input end "+" is electrically connected described first and compares input port (I
1); Described the 3rd resistance (R
3) be connected electrically in the output and the first triode (Q of rail-to-rail comparison/operational amplifier (410)
1) base stage between; The described first triode (Q
1) grounded collector, this first triode (Q
1) emitter be electrically connected the second triode (Q respectively
2) base stage, and by the 4th resistance (R
4) the electrical connection second triode (Q
2) emitter; The described second triode (Q
2) emitter also be electrically connected described driving power input (I
VE), this second triode (Q
2) collector electrode be electrically connected described expansion stream output port (O
L).
6. according to claim 3 or the 5 described current amplification quick charge circuits that are used for hand-hold electronic device, it is characterized in that:
Described power isolation module (500) comprises diode (D), the 3rd triode (Q
3), the 5th resistance (R
5) and the 6th resistance (R
6);
Positive supply input (the V of described rail-to-rail comparison/operational amplifier (410)
+) be electrically connected described driving power input (I by diode (D)
VE), the negative supply input (V of this rail-to-rail comparison/operational amplifier (410)
-) electrical connection the 3rd triode (Q
3) collector electrode; Described the 3rd triode (Q
3) grounded emitter; Described the 5th resistance (R
5) and the 6th resistance (R
6) be connected across driving power input (I
VE) and ground between constitute voltage divider, concatenation points is electrically connected the 3rd triode (Q in the middle of it
3) base stage.
7. according to claim 4 or the 5 described current amplification quick charge circuits that are used for hand-hold electronic device, it is characterized in that:
Described input offset compensation module (600) comprises the 7th resistance (R
7) and the 8th resistance (R
8);
Described the 7th resistance (R
7) be connected electrically in the second input port (I relatively
2) and the inverting input "-" of rail-to-rail comparison/operational amplifier (410) between; Described the 8th resistance (R
8) inverting input "-" and the negative supply input (V that are connected electrically in rail-to-rail comparison/operational amplifier (410)
-) between.
8. the current amplification quick charge circuit that is used for hand-hold electronic device according to claim 1 is characterized in that:
Described hand-held device comprises internet radio, portable electronic device, mobile communication terminal, global position system GPS, handheld instrument and palmtop PC PDA.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101052712A CN101662162B (en) | 2009-01-23 | 2009-01-23 | Current amplification quick charge circuit used for hand-hold electronic device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101052712A CN101662162B (en) | 2009-01-23 | 2009-01-23 | Current amplification quick charge circuit used for hand-hold electronic device |
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| Publication Number | Publication Date |
|---|---|
| CN101662162A true CN101662162A (en) | 2010-03-03 |
| CN101662162B CN101662162B (en) | 2012-02-15 |
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|---|---|---|---|
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Cited By (7)
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| CN102236374A (en) * | 2010-04-26 | 2011-11-09 | 技嘉科技股份有限公司 | Main machine board |
| CN103401284A (en) * | 2013-07-26 | 2013-11-20 | Tcl通讯（宁波）有限公司 | Charging control device and mobile terminal |
| CN104065123A (en) * | 2014-06-19 | 2014-09-24 | Tcl通讯（宁波）有限公司 | Detection and control circuit for detecting and controlling charging current and mobile terminal |
| CN104079026A (en) * | 2013-03-29 | 2014-10-01 | 株式会社理光 | Charging device |
| CN105024431A (en) * | 2015-07-30 | 2015-11-04 | 安徽中杰信息科技有限公司 | Battery charging circuit and charging method thereof |
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| CN2183039Y (en) * | 1993-12-18 | 1994-11-16 | 王坚 | Automatic charging arrangement for battery |
| CN2327109Y (en) * | 1998-04-08 | 1999-06-30 | 尤仁三 | Charging device |
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| CN201113510Y (en) * | 2007-09-21 | 2008-09-10 | 深圳市比克电池有限公司 | Pre-charge cabinet circuit |
| CN201130870Y (en) * | 2007-12-07 | 2008-10-08 | 雄翎科技有限公司 | Charging/discharging device |
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| CN104079026B (en) * | 2013-03-29 | 2016-09-28 | 株式会社理光 | Charging device |
| CN103401284A (en) * | 2013-07-26 | 2013-11-20 | Tcl通讯（宁波）有限公司 | Charging control device and mobile terminal |
| CN103401284B (en) * | 2013-07-26 | 2015-10-28 | Tcl通讯（宁波）有限公司 | Battery charge controller and mobile terminal |
| CN104065123A (en) * | 2014-06-19 | 2014-09-24 | Tcl通讯（宁波）有限公司 | Detection and control circuit for detecting and controlling charging current and mobile terminal |
| CN104065123B (en) * | 2014-06-19 | 2016-08-17 | Tcl通讯（宁波）有限公司 | For detecting and control detection control circuit and the mobile terminal of charging current |
| CN105024431A (en) * | 2015-07-30 | 2015-11-04 | 安徽中杰信息科技有限公司 | Battery charging circuit and charging method thereof |
| CN107979120A (en) * | 2016-10-25 | 2018-05-01 | 中兴通讯股份有限公司 | A kind of fast charge method and device |
| CN109038741A (en) * | 2018-08-16 | 2018-12-18 | 上海艾为电子技术股份有限公司 | A kind of charging circuit and switched charge chip and its charge current sample circuit |
| CN109038741B (en) * | 2018-08-16 | 2023-11-28 | 上海艾为电子技术股份有限公司 | Charging circuit, switch charging chip and charging current sampling circuit thereof |
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| CN101662162B (en) | 2012-02-15 |
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Application publication date: 20100303 Assignee: Shenzhen Xinhao Precise Groupware Co., Ltd. Assignor: SHENZHEN FULL JOIN TECHNOLOGY CO., LTD. Contract record no.: 2013440020397 Denomination of invention: Current amplification quick charge circuit used for hand-hold electronic device Granted publication date: 20120215 License type: Exclusive License Record date: 20131219 |
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Effective date of registration: 20200217 Address after: 518000 Guangdong Province, Shenzhen City Shilong Baoan District Shiyan Street Community Yihe Road No. 2 Building 1 floor, 2 floor, A-B area, D area 2 floor building -9 Patentee after: SUNWODA ELECTRONICS Co.,Ltd. Address before: 518128 Guangdong Province, Shenzhen city Baoan District West Township Huangtian village after the Swiss Shinri Road No. 1 Building 5 floor D Patentee before: Shenzhen Fujiatai Technology Co.,Ltd. |
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