CN104333065A - Multifunctional synchronous rectification mobile power integrated circuit - Google Patents
Multifunctional synchronous rectification mobile power integrated circuit Download PDFInfo
- Publication number
- CN104333065A CN104333065A CN201410603673.6A CN201410603673A CN104333065A CN 104333065 A CN104333065 A CN 104333065A CN 201410603673 A CN201410603673 A CN 201410603673A CN 104333065 A CN104333065 A CN 104333065A
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- unit
- integrated circuit
- synchronous rectification
- charge switch
- power source
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 20
- 239000000758 substrate Substances 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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- H02J7/0021—
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- H02J7/0026—
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
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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
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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- H02J2007/0067—
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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
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a multifunctional synchronous rectification mobile power integrated circuit which is characterized by comprising a charging input port, a discharging output port, a battery connector, a control logic unit, a driving unit, a charging switch tube unit, a power voltage detection unit, an upper tube over-current protection unit, a lower tube over-current protection unit, a CC/CV boosting unit and an LED (light-emitting diode) lamp control unit, an input end of the control logic unit is connected with the power voltage detection unit, the CC/CV boosting unit, the upper tube over-current protection unit and the lower tube over-current protection unit, an output end of the control logic unit is connected with the LED lamp control unit and the driving unit, an output end of the driving unit is connected with the charging switch tube unit, and the charging input port and the discharging output port are a shared port. The multifunctional synchronous rectification mobile power integrated circuit is reasonable in design, simple in structure, various in function, fine in flexibility and cooling performance, stable, reliable, high in charging and discharging efficiency and low in design cost, and effectively solves the problems of the prior art.
Description
Technical field
The present invention relates to power technique fields, especially relate to a kind of synchronous rectification portable power source integrated circuit.
Background technology
The single chip solution portable power source live part applied on the market at present adopts linear-charging mode, and discharge portion adopts Switching Power Supply mode, i.e. DC/DC boosting, as shown in Figure 1.The efficiency of linear-charging is relevant with input voltage and cell voltage, and under common service condition, charge efficiency is at 75-85%.Discharge portion is Switching Power Supply mode due to what adopt, and efficiency can be very high, such as at 80-92%.Because live part and discharge portion are two relatively independent loops, and live part employing is linear-charging mode, and therefore overall efficiency is very low.Meanwhile, adopt during linear mode and charge components and parts heating terribly, thus power can not do too large, or can increase heat radiation cost.Charge circuit is by the impact of Linear Control mode, and charging current can not be done too large, and the time of charging cycle can be very long, be particularly applied in battery capacity very large when, the charging interval can significantly increase.Therefore in some applications, charging current is less than discharging current.In this case, if battery electric quantity is not enough, will occur, and even if there is external power supply, enough discharging currents can not be provided to meet the needs of external equipment.In addition, its charge circuit needs one and discharge loop independently controller or power tube.Discharge loop also needs two independently controller or power tubes, or a power tube and a fly-wheel diode, adds design cost.
Discharge and recharge scheme commonly used by another kind of portable power source is that live part adopts Switching Power Supply mode, and discharge portion also adopts Switching Power Supply mode, but two loops are relatively independent, as shown in Figure 2.Because charging and discharging is all the Switching Power Supply mode adopted, therefore charge efficiency and discharging efficiency can be very high.On the other hand, because charging and discharging circuit is relatively independent, charge circuit needs an inductance and two power tubes, or an inductance, or a power tube and a fly-wheel diode.Discharge loop needs an inductance and two power tubes, or an inductance, or a power tube and a fly-wheel diode.Owing to using two inductance, system bulk can very large, design cost is also higher.Meanwhile, also need two group controllers during the relatively independent design of charging and discharging circuit, each group controller is made up of two power tubes, or be made up of a power tube and a fly-wheel diode, and control chip area is comparatively large, adds the difficulty of wires design, improve the cost of design.
Therefore, urgently propose that a kind of structure is simple, excellent performance, flexibility good, reliable and stable, lower-cost portable power source discharge and recharge scheme.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of synchronous rectification portable power source integrated circuit is provided, its charge circuit and discharge loop all adopt Switching Power Supply mode, and charge circuit and discharge loop are same loops; And shared control unit and inductance, share charging input interface and electric discharge output interface.In addition, adopt the mode of changeable substrate, realizing electric discharge can turn-off function, when can not increase power tube or amount controller, realizes short-circuit protection function and overcurrent protection function, thus improves running efficiency of system.It is reasonable in design, structure is simple, diverse in function, flexibility is good, reliable and stable, efficiency for charge-discharge is higher, perfect heat-dissipating, design cost are lower, efficiently solves the deficiencies in the prior art.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of synchronous rectification portable power source integrated circuit, it is characterized in that: comprise charging input port, electric discharge delivery outlet, battery connector, control logic unit, driver element, charge switch pipe unit, supply voltage detecting unit, upper pipe over-current protecting unit, lower pipe over-current protecting unit, CC/CV boosting unit and LED control unit, described control logic unit input and supply voltage detecting unit, CC/CV boosting unit, upper pipe over-current protecting unit, lower pipe over-current protecting unit connects, described control logic unit output is connected with LED control unit and driver element, described driver element output is connected with charge switch pipe unit, described charging input port, electric discharge delivery outlet are a shared port.
Above-mentioned a kind of synchronous rectification portable power source integrated circuit, is characterized in that: described charge switch pipe unit is about two the charge switch pipes be connected in series.
Above-mentioned a kind of synchronous rectification portable power source integrated circuit, is characterized in that: described upper pipe over-current protecting unit be changeable substrate P type MOSFET power tube, conventional P-type MOSFET power tube, conventional N-type MOSFET power tube, other types power tube any one.
Above-mentioned a kind of synchronous rectification portable power source integrated circuit, it is characterized in that: described CC/CV boosting unit comprises and the filter capacitor of battery connector parallel connection and the boost inductance of connecting with battery connector, and the charge switch pipe be connected with boost inductance.
Above-mentioned a kind of synchronous rectification portable power source integrated circuit, is characterized in that: described boost inductance drains with charge switch pipe and is connected, described charge switch pipe source ground.
Above-mentioned a kind of synchronous rectification portable power source integrated circuit, is characterized in that: described charge switch pipe is also MOSFET power tube.
The present invention compared with prior art has the following advantages:
1, charge circuit of the present invention and discharge loop all adopt Switching Power Supply mode, and its charging and discharging currents is large, the discharge and recharge time is short, efficiency for charge-discharge is higher, system radiating performance is good;
2, charge circuit of the present invention and discharge loop are same loops, can shared control unit and inductance; When energy/power is internally transmitted from interface, it is step-down switching power supply architecture, is boosted switch power supply architecture when energy/power is transmitted from inside to interface; Compare the design of traditional charge-discharge circuit and can realize less conducting resistance, or the power tube of larger efficiency.Therefore design cost is low, circuit loss is less, charging and discharging currents is comparatively large, efficiency for charge-discharge improves greatly;
3, charging input interface of the present invention can share with electric discharge output interface, and also can be isolated into stand-alone interface by increasing control device, flexibility is good;
4, the present invention adopts the mode of changeable substrate; realizing electric discharge can turn-off function; when can not increase power tube or controller (such as short-circuit protection controller) quantity, realize short-circuit protection function and overcurrent protection function, thus relatively improve running efficiency of system.
In sum, the present invention is reasonable in design, structure is simple, diverse in function, flexibility is good, reliable and stable, efficiency for charge-discharge is higher, perfect heat-dissipating, design cost are lower, efficiently solves the deficiencies in the prior art.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is traditional linear voltage decreasing charging and boost switching discharge power supply integrated circuit structure schematic diagram;
Fig. 2 is traditional switch buck charging and boost switching discharge power supply integrated circuit structure schematic diagram;
Fig. 3 is synchronous rectification portable power source IC interior structural representation of the present invention;
Fig. 4 is shared discharge and recharge mouth charge-discharge circuit structural representation of the present invention;
Fig. 5 be Fig. 4 improve can not share discharge and recharge mouth charge-discharge circuit structural representation;
Fig. 6 is shared discharge and recharge mouth charge-discharge circuit circuit theory diagrams of the present invention.
Embodiment
As shown in Figure 3, a kind of synchronous rectification portable power source integrated circuit, it is characterized in that: comprise charging input port, electric discharge delivery outlet, battery connector, control logic unit, driver element, charge switch pipe unit, supply voltage detecting unit, upper pipe over-current protecting unit, lower pipe over-current protecting unit, CC/CV boosting unit and LED control unit, described control logic unit input and supply voltage detecting unit, CC/CV boosting unit, upper pipe over-current protecting unit, lower pipe over-current protecting unit connects, described control logic unit output is connected with LED control unit and driver element, described driver element output is connected with charge switch pipe unit, described charging input port, electric discharge delivery outlet are a shared port.
In the present embodiment, described charge switch pipe unit is about two the charge switch pipes be connected in series.
In the present embodiment, described upper pipe over-current protecting unit be changeable substrate P type MOSFET power tube, conventional P-type MOSFET power tube, conventional N-type MOSFET power tube, other types power tube any one.
In the present embodiment, described CC/CV boosting unit comprises and the filter capacitor of battery connector parallel connection and the boost inductance of connecting with battery connector, and the charge switch pipe be connected with boost inductance.
In the present embodiment, described boost inductance drains with charge switch pipe and is connected, described charge switch pipe source ground.
In the present embodiment, described charge switch pipe is also MOSFET power tube.
As shown in Figure 4; for CC/CV boosting unit circuit theory diagrams; wherein charge input port, electric discharge delivery outlet be a shared port, charging input port, electric discharge delivery outlet connect switching tube represent changeable substrate P type MOSFET power tube, for realizing circuit over-voltage over-current protection.When supply voltage detecting unit detects that USB charge port voltage turns off more than 5V, P type MOSFET power tube, and then circuit stops charging.
Conventional scheme adopts P type MOSFET pipe as controller, and the P type MOSFET in integrated circuit technology has a parasitic diode, it will provide a discharge path, even if make P type MOSFET turn off, also flow to output interface without flow resistance power-off stream from battery.Therefore conventional scheme can not realize separately the function of closing discharge loop, thus protection system.
The present embodiment passes through the switching of substrate and the control of current potential thereof of P type MOFSET pipe; realize controlling the shutoff of parasitic diode; thus the closedown achieved system discharge loop; realize the function of protection, such as when cell voltage is lower than 3V, circuit overdischarge is described; P type MOSFET power tube turns off; and then circuit stops electric discharge, achieves the defencive function of overvoltage, as shown in Figure 6.
Simultaneously, charging input port, electric discharge delivery outlet share, make when energy/power is internally transmitted from interface, it is step-down switching power supply architecture, the MOFSET pipe of the changeable substrate of now connecting with boost inductance in Fig. 6 plays the effect of the switching tube of conventional buck type Switching Power Supply structure, be boosted switch power supply architecture when energy/power is transmitted from inside to interface, the MOFSET pipe in parallel with boost inductance plays the effect of the switching tube of conventional step-up switching power supply structure.Achieve one tube multipurpose like this, flexibility is good, greatly reduces system design complexity.
In addition; input interface and output interface also can not share; as shown in Figure 5; on the basis of Fig. 4; add the control section of extra output current limiting, and extra input high voltage protective part, allow input interface be separated with output interface; Current limited Control and high pressure block or protecting control can be selected arbitrarily, and flexibility is good.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection range of technical solution of the present invention.
Claims (6)
1. a synchronous rectification portable power source integrated circuit, it is characterized in that: comprise charging input port, electric discharge delivery outlet, battery connector, control logic unit, driver element, charge switch pipe unit, supply voltage detecting unit, upper pipe over-current protecting unit, lower pipe over-current protecting unit, CC/CV boosting unit and LED control unit, described control logic unit input and supply voltage detecting unit, CC/CV boosting unit, upper pipe over-current protecting unit, lower pipe over-current protecting unit connects, described control logic unit output is connected with LED control unit and driver element, described driver element output is connected with charge switch pipe unit, described charging input port, electric discharge delivery outlet are a shared port.
2. according to a kind of synchronous rectification portable power source integrated circuit according to claim 1, it is characterized in that: described charge switch pipe unit is about two the charge switch pipes be connected in series.
3., according to a kind of synchronous rectification portable power source integrated circuit according to claim 1, it is characterized in that: described upper pipe over-current protecting unit be changeable substrate P type MOSFET power tube, conventional P-type MOSFET power tube, conventional N-type MOSFET power tube, other types power tube any one.
4. according to a kind of synchronous rectification portable power source integrated circuit according to claim 1, it is characterized in that: described CC/CV boosting unit comprises and the filter capacitor of battery connector parallel connection and the boost inductance of connecting with battery connector, and the charge switch pipe be connected with boost inductance.
5., according to a kind of synchronous rectification portable power source integrated circuit according to claim 4, it is characterized in that: described boost inductance drains with charge switch pipe and is connected, described charge switch pipe source ground.
6. according to a kind of synchronous rectification portable power source integrated circuit according to claim 5, it is characterized in that: described charge switch pipe is also MOSFET power tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603673.6A CN104333065A (en) | 2014-10-31 | 2014-10-31 | Multifunctional synchronous rectification mobile power integrated circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410603673.6A CN104333065A (en) | 2014-10-31 | 2014-10-31 | Multifunctional synchronous rectification mobile power integrated circuit |
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| CN104333065A true CN104333065A (en) | 2015-02-04 |
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| CN201410603673.6A Pending CN104333065A (en) | 2014-10-31 | 2014-10-31 | Multifunctional synchronous rectification mobile power integrated circuit |
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|---|---|---|---|---|
| CN1842957A (en) * | 2004-07-20 | 2006-10-04 | 株式会社理光 | Switching regulator, power supply circuit and secondary cell charging circuit including the same |
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-
2014
- 2014-10-31 CN CN201410603673.6A patent/CN104333065A/en active Pending
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|---|---|---|---|---|
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| CN102684167A (en) * | 2012-05-18 | 2012-09-19 | 杭州科岛微电子有限公司 | Recoil protection circuit for power failure of power supply |
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Application publication date: 20150204 |