CN105334937A - Electronic device and switch controlling method - Google Patents
Electronic device and switch controlling method Download PDFInfo
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- CN105334937A CN105334937A CN201410272825.9A CN201410272825A CN105334937A CN 105334937 A CN105334937 A CN 105334937A CN 201410272825 A CN201410272825 A CN 201410272825A CN 105334937 A CN105334937 A CN 105334937A
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- charging circuit
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Abstract
The present invention discloses an electronic device, so as to solve the technical problem in the prior art that a PCB layout area is large when a charging circuit and a voltage step-down circuit coexist in an electronic device. The electronic device comprises: a circuit board; a chip, disposed on the circuit board, wherein the charging circuit and a voltage step-down circuit are integrated on the chip; and a power inductor, connected in parallel at two ends of the charging circuit and the voltage step-down circuit, for filtering a current. An input end of the charging circuit is connected with an external power source of the electronic device, and an output end of the charging circuit is connected with a power supply unit of the electronic device, so as to use the external power source to charge the power supply unit. An input end of the voltage step-down circuit is connected with a power supply end, and an output end of the voltage step-down circuit is connected with a first module of the electronic device, so as to supply power to the first module. The present invention also discloses a switch controlling method.
Description
Technical field
The present invention relates to electronic device field, particularly a kind of electronic equipment and method of controlling switch.
Background technology
In some electronic equipment, need to increase some extra modules and export lower voltage to meet the functional requirement of described electronic equipment.Electronic equipment is so just needed to carry out work to these extra module for power supply to make these modules.
Such as, a kind of extra module is LDO (LowDropoutRegulator, low-dropout regulator), and traditional mode adopts the charging chip of electronic equipment to power to LDO, but such power supply mode efficiency comparison is low and power consumption is larger.In order to improve power supplying efficiency and reduce system power dissipation, other circuit can be increased power to LDO separately, such as can adopt BUCK (a kind of reduction voltage circuit) circuit to power to LDO separately, like this, in the electronic device, BUCK circuit and charging chip are exactly two separate circuit.
After increase BUCK circuit, electronic equipment can improve power supplying efficiency to a certain extent, and reduces power consumption.But owing to adds additional BUCK circuit, and have respective power inductance in BUCK circuit and charging chip, obviously increase the fabric swatch area of PCB in electronic equipment, increase the volume of electronic equipment, accordingly, the cost of electronic equipment also can increase to some extent.
Summary of the invention
The embodiment of the present invention provides a kind of electronic equipment and method of controlling switch, for solving the technical matters that in prior art, PCB fabric swatch area is larger when charging circuit in electronic equipment and reduction voltage circuit exist simultaneously.
A kind of electronic equipment, comprising:
Circuit board;
Chip, be arranged on described circuit board, described integrated chip has charging circuit and reduction voltage circuit;
Power inductance, is parallel to the two ends of described charging circuit and described reduction voltage circuit, for carrying out filtering to electric current;
The input end of described charging circuit is connected with the external power source of described electronic equipment, and output terminal is connected with the power supply unit of described electronic equipment, is the charging of described power supply unit for utilizing described external power source;
The input end of described reduction voltage circuit is connected with feeder ear, and output terminal is connected with the first module of described electronic equipment, for being described first module for power supply.
Optionally, described feeder ear is the output terminal of described external power source or the output terminal of described power supply unit.
Optionally, described chip also comprises switch switching unit, one end of described switch switching unit is connected with described reduction voltage circuit with described charging circuit, and the other end is connected with described power inductance, is connected with described charging circuit for controlling described power inductance with described reduction voltage circuit.
Optionally, described switch switching unit comprises the first switch and second switch;
Described first switch series is coupled between described charging circuit and described power inductance, and described second switch is series between described reduction voltage circuit and described power inductance;
Wherein, if described first switch open, then described second switch turns off, described charging circuit and described power inductance form path, described charging circuit enters duty, and described reduction voltage circuit and described power inductance disconnect, and described reduction voltage circuit enters off working state; If described first switch OFF, then described second switch is opened, and described reduction voltage circuit and described power inductance form path, and described reduction voltage circuit enters duty, and described charging circuit and described power inductance disconnect, and described charging circuit enters off working state.
Optionally, in described chip, also comprise controller, be connected with described switch switching unit, for controlling opening and shutting off of described first switch and described second switch.
A kind of method of controlling switch, described method is applied to electronic equipment, and described electronic equipment includes circuit board; Be arranged on the chip on described circuit board; Be integrated in the charging circuit in described chip and reduction voltage circuit; Be parallel to the power inductance at described charging circuit and described reduction voltage circuit two ends; Switch switching unit and controller is also comprised in described chip; Described method comprises:
By described controller to described switch switching unit sending controling instruction;
Received by described switch switching unit and perform described steering order, controlling described charging circuit and described reduction voltage circuit is connected with described power inductance respectively.
Optionally, described switch switching unit comprises the first switch and second switch, is describedly received by described switch switching unit and performs described steering order, controls described charging circuit and described reduction voltage circuit is connected with described power inductance respectively, comprising:
Received by described switch switching unit and perform described steering order, opening described first switch, turn off described second switch, being connected with described power inductance to control described charging circuit; Or
Received by described switch switching unit and perform described steering order, opening described second switch, turning off described first switch, being connected with described power inductance to control described reduction voltage circuit.
Optionally, describedly received by described switch switching unit and perform described steering order, controlling described charging circuit and described reduction voltage circuit is connected with described power inductance respectively, comprising:
When described electronic equipment enters the first mode of operation, received by described switch switching unit and perform described steering order, being connected with described power inductance to control described charging circuit; Or
When described electronic equipment enters the second mode of operation, received by described switch switching unit and perform described steering order, being connected with described power inductance to control described reduction voltage circuit.
Optionally, described first mode of operation is charge mode, or USBOTG pattern; Described second mode of operation is the mode of operation except described first mode of operation.
Optionally, described electronic equipment also comprises the power supply unit be connected with described charging circuit and the first module be connected with described reduction voltage circuit, describedly received by described switch switching unit and perform described steering order, control described charging circuit and described reduction voltage circuit is connected with described power inductance respectively, comprising:
When being received by described switch switching unit and performing described steering order, open described first switch, turn off described second switch, when described charging circuit is connected with described power inductance, give the charging of described power supply unit by described charging circuit;
When being received by described switch switching unit and performing described steering order, open described second switch, turn off described first switch, when described reduction voltage circuit is connected with described power inductance, give described first module for power supply by described reduction voltage circuit.
In the embodiment of the present invention, electronic equipment includes a circuit board, described circuit board includes a chip, to be used for the charging circuit of the power supply unit of described electronic equipment charging with simultaneously in the chips integrated to the reduction voltage circuit of described first module for power supply, and, described charging circuit and described reduction voltage circuit is allowed jointly to use a power inductance, relative to prior art, this circuit structure is under the prerequisite reducing system power dissipation, significantly reduce the fabric swatch area of PCB in electronic equipment, reduce the volume of electronic equipment, accordingly, also reduce the cost of electronic equipment.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the primary structure block diagram of electronic equipment in the embodiment of the present invention;
Fig. 2 is the structured flowchart that the embodiment of the present invention comprises the chip of switch switching unit;
Fig. 3 is the structured flowchart of embodiment of the present invention breaker in middle switch unit;
Fig. 4 is the structured flowchart that the embodiment of the present invention comprises the chip of controller;
Fig. 5 is the main flow figure of embodiment of the present invention breaker in middle control method.
Embodiment
The embodiment of the present invention provides a kind of electronic equipment, comprising: circuit board; Chip, be arranged on described circuit board, described integrated chip has charging circuit and reduction voltage circuit; Power inductance, is parallel to the two ends of described charging circuit and described reduction voltage circuit, for carrying out filtering to electric current; The input end of described charging circuit is connected with the external power source of described electronic equipment, and output terminal is connected with the power supply unit of described electronic equipment, is the charging of described power supply unit for utilizing described external power source; The input end of described reduction voltage circuit is connected with feeder ear, and output terminal is connected with the first module of described electronic equipment, for being described first module for power supply.
In the embodiment of the present invention, electronic equipment includes a circuit board, described circuit board includes a chip, to be used for the charging circuit of the power supply unit of described electronic equipment charging with simultaneously in the chips integrated to the reduction voltage circuit of described first module for power supply, and, described charging circuit and described reduction voltage circuit is allowed jointly to use a power inductance, relative to prior art, this circuit structure is under the prerequisite reducing system power dissipation, significantly reduce the fabric swatch area of PCB in electronic equipment, reduce the volume of electronic equipment, accordingly, also reduce the cost of electronic equipment.
Clearly understand for making the object of the application, technical scheme and advantage, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.When not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.Further, although show logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
In the embodiment of the present invention, described electronic equipment can be the different electronic equipment of mobile phone, PAD (panel computer), intelligent watch etc.
In addition, term "and/or" herein, being only a kind of incidence relation describing affiliated partner, can there are three kinds of relations in expression, and such as, A and/or B, can represent: individualism A, exists A and B simultaneously, these three kinds of situations of individualism B.In addition, character "/" herein, when not illustrating, general expression forward-backward correlation is to the relation liking a kind of "or".
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is described in detail.
Refer to Fig. 1, the embodiment of the present invention provides a kind of electronic equipment 100, described electronic equipment 100 comprises circuit board 101 and chip 102, and described chip 102 is arranged on described circuit board 101, is integrated with charging circuit 103, reduction voltage circuit 104 and power inductance 105 in described chip 102.Wherein, described power inductance 105 is parallel to the two ends of described charging circuit 103 and described reduction voltage circuit 104, for carrying out filtering to electric current.The input end of described charging circuit 103 is connected with external power source 106, and output terminal is connected with the power supply unit 107 of described electronic equipment 100, charges for described power supply unit 107 for utilizing described external power source 106; The input end of described reduction voltage circuit 104 is connected with feeder ear 108, and output terminal is connected with the first module 109 of described electronic equipment 100, for powering for described first module 109.
In the embodiment of the present invention, described charging circuit 103 and described reduction voltage circuit 104 are integrated in described chip 102 simultaneously, can not have annexation between described charging circuit 103 and described reduction voltage circuit 104.
In the embodiment of the present invention, such as, described external power source 106 can provide the power supply adaptor of charging current for giving described electronic equipment 100, or such as, described external power source 106 can be the USB interface being connected computer by the USB data line of described electronic equipment 100, etc.Described charging circuit 103 input current can be given by described external power source 106, thus described charging circuit 103 charges to described power supply unit 107.
Described power supply unit 107 can for the functional unit providing electric energy to described electronic equipment 100, such as, described power supply unit 107 can be the battery of described electronic equipment 100, when described charging circuit 103 is connected with described external power source 106, then described charging circuit 103 input current can be given, thus described charging circuit 103 can give the charging of described battery, described battery can reserve power work for described electronic equipment 100.
Described first module 109 can for export lower voltage, to meet the module of described electronic equipment 100 difference in functionality demand, such as, described first module 109 can be LDO.
In the embodiment of the present invention, described reduction voltage circuit 104 can be such as BUCK circuit, with common BUCK circuit unlike, can not power inductance be contained in the described reduction voltage circuit 104 in the embodiment of the present invention.
Described charging circuit 103 can use described power inductance 105 jointly with described reduction voltage circuit 104, but at synchronization, only has one of them can use described power inductance 105.Such as, at any one time, only have described charging circuit 103 at the described power inductance 105 of use, and described reduction voltage circuit 104 does not use, or, only have described reduction voltage circuit 104 at the described power inductance 105 of use, and described charging circuit does not use.
Generally, when described charging circuit 103 is in running order, described reduction voltage circuit 104 can be in off working state, and when described charging circuit 103 is in off working state, described reduction voltage circuit 104 can be in running order, and namely described charging circuit 103 and described reduction voltage circuit 104 generally can not work simultaneously.Therefore, when described charging circuit 103 works, described power inductance 105 is used by described charging circuit 103, and when described reduction voltage circuit 104 works, described power inductance 105 is used by described reduction voltage circuit 104.
Optionally, in the embodiment of the present invention, described feeder ear 108 can be the output terminal of described power supply unit 107, or can be the output terminal of described external power source 106.Especially, when described power supply unit 107 works, described feeder ear 108 is the output terminal of described power supply unit 107; When described power supply unit 107 electric energy exhausts, then described feeder ear 108 can be the output terminal of external power source 106.Whether described reduction voltage circuit 104 can exhaust by the electric energy of power supply unit 107 described in automatic decision, thus can automatically select described feeder ear 108 by switching over.
Optionally, refer to Fig. 2, in the embodiment of the present invention, in described chip 102, switch switching unit 200 can also be comprised.One end of described switch switching unit 200 is connected with described reduction voltage circuit 104 with described charging circuit 103, the other end is connected with described power inductance 105, and described switch switching unit 200 is connected with described reduction voltage circuit 104 with described charging circuit 103 respectively for controlling described power inductance 105.
In embodiments of the present invention, described switch switching unit 200 for having the unit of switching function, as long as have the independent circuit of switching function or electrical combination can, the present invention does not limit.Such as, described switch switching unit 200 can be separately transistor switching circuit, or such as, described switch switching unit 200 can be separately double control switch circuit, or such as, described switch switching unit 200 can be separately FET switch circuit, or such as, described switch switching unit 200 can be combinational circuit of described transistor switching circuit and described double control switch circuit etc.
Optionally, refer to Fig. 3, in the embodiment of the present invention, described switch switching unit 200 can comprise the first switch 301 and second switch 302.Described first switch 301 is series between described charging circuit 103 and described power inductance 105, and described second switch 302 is series between described reduction voltage circuit 104 and described power inductance 105.Wherein, if described first switch 301 is opened, then described second switch 302 turns off, described charging circuit 103 forms path with described power inductance 105, described charging circuit 103 enters duty, and described reduction voltage circuit 104 disconnects with described power inductance 105, described reduction voltage circuit 104 enters off working state; If described first switch 301 turns off, then described second switch 302 is opened, described reduction voltage circuit 104 forms path with described power inductance 105, described reduction voltage circuit 104 enters duty, and described charging circuit 103 and described power inductance, 105 disconnect, and described charging circuit 103 enters off working state.
Such as, when described first switch 301 is opened, described second switch 302 turns off, described charging circuit 103 is communicated with to form path with described power inductance 105 by described switch switching unit 200, described charging circuit 103 works, and the described power supply unit 107 being input as described electronic equipment 100 by the electric current receiving described external power source 106 is charged.When described second switch 302 is opened, described first switch 301 turns off, described reduction voltage circuit 104 is communicated with to form path with described power inductance 105 by described switch switching unit 200, and described reduction voltage circuit 104 works, for described first module 109 of described electronic equipment 100 is powered.
The work requirements different according to described electronic equipment 100, described switch switching unit 200 can switch the unlatching of described first switch 301 and described second switch 302 and shutoff, can the described charging circuit of corresponding control 103 and described power inductance 105, described reduction voltage circuit 104 is communicated with described power inductance 105, thus can ensure that described charging circuit 103 and described reduction voltage circuit 104 can use described power inductance 105 jointly, under the prerequisite as far as possible reducing described electronic equipment 100 system power dissipation, the area of circuit board 101 in the described electronic equipment of further reduction, thus make the miniaturization more of described electronic equipment 100, corresponding low, also save cost.
Optionally, refer to Fig. 4, can also comprise controller 400 in described chip 102, described controller 400 is connected with described switch switching unit 200, for controlling opening and shutting off of described first switch 301 and described second switch 302.
In the embodiment of the present invention, described controller 400 can be a control circuit, or can be processor etc., such as described controller 400 can be MCU (MicroControlUnit, micro-control unit), or such as described controller 400 can be CPU (central processing unit), etc.
Described controller 400 can be arbitrary with the annexation of described switch switching unit 200.Such as, refer to Fig. 4, described controller 400 can be connected to A point with described switch switching unit 200, or can be connected to B point, or can be connected to C point, or can be connected to D point, is be connected to D point for described controller 400 in Fig. 4.Wherein, representated by D point is all the other tie points possible arbitrarily on described switch switching unit 200 except A, B, C tri-tie points, and in Fig. 4, a just signal, does not represent the accurate location of D point.Described controller 400 can by unlatching and the shutoff of controlling described first switch 301 and described second switch 302 to described switch switching unit 200 sending controling instruction.
Such as, when described controller 400 is to described switch switching unit 200 sending controling instruction, described switch switching unit 200 receives and performs described steering order, and such as described steering order is for controlling described first switch 301 and open and described second switch 302 turning off.When described first switch 301 is opened and described second switch 302 turns off, described charging circuit 103 is communicated with described power inductance 105, described charging circuit 103 works, described charging circuit 103 by receiving and changing the input current of described external power source 106, and then charges to described power supply unit 107.
Such as, when described controller 400 is to described switch switching unit 200 sending controling instruction, described switch switching unit 200 receives described steering order, and such as described steering order is for controlling described first switch 301 and turn off and described second switch 302 being opened.When described first switch 301 turns off and described second switch 302 is opened, described reduction voltage circuit 104 is communicated with described power inductance 105, and described reduction voltage circuit 104 works, and described reduction voltage circuit 104 powers to described first module 109.
Refer to Fig. 5, based on same inventive concept, the embodiment of the present invention provides a kind of method of controlling switch.Described method can be applied to foregoing electronic equipment 100, and described electronic equipment 100 includes circuit board 101; Be arranged on the chip 102 on described circuit board 101; Be integrated in the charging circuit 103 in described chip 102 and reduction voltage circuit 104; Be parallel to the power inductance 105 at described charging circuit 103 and described reduction voltage circuit 104 two ends; Switch switching unit 200 and controller 400 is also comprised in described chip 102; The main flow of described method is described below.
Step 501: by described controller 400 to described switch switching unit 200 sending controling instruction.
In the embodiment of the present invention, described controller 400 can be a control circuit, or can be processor etc., such as described controller 400 can be MCU (MicroControlUnit, micro-control unit), or such as described controller 400 can be CPU (central processing unit), etc.
Such as, described steering order may be used for controlling described first switch 301 and to open and described second switch 302 turns off.When described first switch 301 is opened and described second switch 302 turns off, described charging circuit 103 is connected to form path with described power inductance 105, described charging circuit 103 works, described charging circuit 103 by receiving and changing the input current of described external power source 106, and then charges to described power supply unit 107.
Such as, described steering order may be used for controlling described first switch 301 and to turn off and described second switch 302 is opened.When described first switch 301 turns off and described second switch 302 is opened, described reduction voltage circuit 104 is connected to form path with described power inductance 105, and described reduction voltage circuit 104 works, and described reduction voltage circuit 104 powers to described first module 109.
Step 502: received by described switch switching unit 200 and perform described steering order, controls described charging circuit 103 and described reduction voltage circuit 104 is connected with described power inductance 105 respectively.
In the embodiment of the present invention, described controller 400 can send from switch switching unit described in trend 200 and correspond to the different steering order controlling content, can perform corresponding operation after described switch switching unit 200 receives described steering order.
Such as, after described switch switching unit 200 receives described steering order, described switch switching unit 200 performs described steering order, controls described charging circuit 103 and is connected with described power inductance 105, and controls described reduction voltage circuit 104 simultaneously and disconnect with described power inductance 105.
Or such as, after described switch switching unit 200 receives described steering order, described switch switching unit 200 performs described steering order, controls described reduction voltage circuit 104 and is connected with described power inductance 105, and controls described charging circuit 103 simultaneously and disconnect with described power inductance 105.
Optionally, in the embodiment of the present invention, described switch switching unit 200 can comprise the first switch 301 and second switch 302, received by described switch switching unit 200 and perform described steering order, control described charging circuit 103 and described reduction voltage circuit 104 is connected with described power inductance 105 respectively, can comprise: received by described switch switching unit 200 and perform described steering order, open described first switch 301, disconnect described second switch 302, be connected with described power inductance 105 to control described charging circuit 103; Or, received by described switch switching unit 200 and perform described steering order, opening described second switch 302, disconnecting described first switch 301, being connected with described power inductance 105 to control described reduction voltage circuit 104.
Optionally, in the embodiment of the present invention, received by described switch switching unit 200 and perform described steering order, control described charging circuit 103 and described reduction voltage circuit 104 is connected with described power inductance 105 respectively, can comprise: when described electronic equipment 100 enters the first mode of operation, received by described switch switching unit 200 and perform described steering order, being connected with described power inductance 105 to control described charging circuit 103; Or, when described electronic equipment enters the second mode of operation, received by described switch switching unit 200 and perform described steering order, opening described second switch 302, turning off described first switch 301.
In the embodiment of the present invention, described first mode of operation can be the mode of operation that described electronic equipment 100 needs described charging circuit 103 and works.When described electronic equipment 100 enters described first mode of operation, described electronic equipment 100 needs described charging circuit 103 to work, described controller 400 sends described steering order to described switch switching unit 200, described steering order is for controlling described first switch 301 and open and described second switch 302 turning off, after performing described steering order, described charging circuit 103 is connected to form path with described power inductance 105, and described charging circuit 103 works.
In the embodiment of the present invention, described second mode of operation can be the mode of operation that described electronic equipment 100 works without the need to described charging circuit 103.When described electronic equipment 100 enters described second mode of operation, described controller 400 sends described steering order to described switch switching unit 200, described steering order is for controlling described first switch 301 and turn off and described second switch 302 being opened, after performing described steering order, described reduction voltage circuit 104 is connected to form path with described power inductance 105, and described reduction voltage circuit 104 works.
Optionally, in the embodiment of the present invention, described first mode of operation specifically can refer to charge mode, maybe can refer to USBOTG (USBOn-The-Go, a kind of data exchange mode) pattern; Described second mode of operation can be described electronic equipment other mode of operations except described first mode of operation.
In the embodiment of the present invention, described first mode of operation can be the charge mode of described electronic equipment 100, such as, when the battery of described electronic equipment 100 needs to charge, described electronic equipment 100 enters charge mode, then now described charging circuit 103 is connected to form path with described power inductance 105, and described charging circuit 103 works.
Described first mode of operation also can be described USBOTG pattern.Wherein USBOTG be a kind of connection in order to solve between different equipment or mobile device and carry out the technology of exchanges data, such as digital camera is directly connected on printer, namely the USB port of two equipment rooms is connected by USBOTG technology, the photograph taken is printed immediately, or, also can by the data in digital camera, being sent to by USBOTG has on the portable hard drive of USB interface, expensive storage card need not be carried during operation in the wild just a large amount of picture datas directly can be left on portable hard drive, etc.Because when described electronic equipment 100 is when using USBOTG pattern, described electronic equipment 100 is needed to export a magnitude of voltage identical with described charging circuit 103 output voltage to described electronic equipment 100 outside, so when using described USBOTG pattern, also described charging circuit 103 is needed to work to power to described USBOTG, namely, when described electronic equipment 100 is in described USBOTG pattern, described charging circuit 103 is needed to work.
Second mode of operation can for described electronic equipment remove in the remaining all working pattern of described charge mode and described USBOTG pattern any one.Such as, the second mode of operation of described electronic equipment can be: standby mode, call mode, game mode etc.
Optionally, described electronic equipment 100 can also comprise the power supply unit 107 be connected with described charging circuit 103 and the first module 109 be connected with described reduction voltage circuit 104, received by described switch switching unit 200 and perform described steering order, control described charging circuit 103 and described reduction voltage circuit 104 is connected with described power inductance 105 respectively, can comprise: when being received by described switch switching unit 200 and performing described steering order, open described first switch 301, turn off described second switch 302, when described charging circuit 103 is connected with described power inductance 105, charge to described power supply unit 107 by described charging circuit 103, when being received by described switch switching unit 200 and performing described steering order, open described second switch 302, turn off described first switch 301, when described reduction voltage circuit 104 is connected with described power inductance 105, power to described first module 109 by described reduction voltage circuit 104.
In the embodiment of the present invention, described first module 109 can for export lower voltage, to meet the module of described electronic equipment 100 difference in functionality demand, such as, described first module 109 can be LDO.
Electronic equipment 100 in the embodiment of the present invention can comprise: circuit board 101; Chip 102, be arranged on described circuit board 101, described chip 102 is integrated with charging circuit 103 and reduction voltage circuit 104; Power inductance 105, is parallel to the two ends of described charging circuit 103 and described reduction voltage circuit 104, for carrying out filtering to electric current; The input end of described charging circuit 103 is connected with the external power source 106 of described electronic equipment 100, and output terminal is connected with the power supply unit 107 of described electronic equipment 100, charges for described power supply unit 107 for utilizing described external power source 106; The input end of described reduction voltage circuit 104 is connected with feeder ear 108, and output terminal is connected with the first module 109 of described electronic equipment 100, for powering for described first module 109.
In the embodiment of the present invention, electronic equipment 100 includes a circuit board 101, described circuit board 101 includes a chip 102, the charging circuit 103 being used for charging to the power supply unit 107 of described electronic equipment 100 is integrated in described chip 102 with the reduction voltage circuit 104 of powering to the first module 109 of described electronic equipment 100 simultaneously, and, described charging circuit 103 is allowed jointly to use a power inductance 105 with described reduction voltage circuit 104, relative to prior art, this circuit structure is under the prerequisite reducing system power dissipation, significantly reduce the fabric swatch area of PCB in electronic equipment, reduce the volume of electronic equipment, accordingly, also reduce the cost of electronic equipment.
Those skilled in the art can be well understood to, for convenience and simplicity of description, only be illustrated with the division of above-mentioned each functional module, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional units, inner structure by device is divided into different functional units, to complete all or part of function described above.The system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described module or unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that the technical scheme of the application contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) perform all or part of step of method described in each embodiment of the application.And aforesaid storage medium comprises: USB flash disk, portable hard drive, ROM (read-only memory) (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
Specifically, a kind of method of controlling switch in the embodiment of the application is applied to described electronic equipment, computer program instructions corresponding to described method can be stored in CD, hard disk, on the storage mediums such as USB flash disk, when the computer program instructions corresponding with a kind of method of controlling switch in storage medium is read by an electronic equipment or be performed, comprise the steps:
By described controller to described switch switching unit sending controling instruction;
Received by described switch switching unit and perform described steering order, controlling described charging circuit and described reduction voltage circuit is connected with described power inductance respectively.
Optionally, described switch switching unit comprises the first switch and second switch, that store in described storage medium and step: received by described switch switching unit and perform described steering order, control described charging circuit and described reduction voltage circuit is connected with described power inductance respectively, corresponding computer instruction, in the process be performed, specifically comprises:
Received by described switch switching unit and perform described steering order, opening described first switch, turn off described second switch, being connected with described power inductance to control described charging circuit; Or
Received by described switch switching unit and perform described steering order, opening described second switch, turning off described first switch, being connected with described power inductance to control described reduction voltage circuit.
Optionally, that store in described storage medium and step: received by described switch switching unit and perform described steering order, control described charging circuit and described reduction voltage circuit is connected with described power inductance respectively, corresponding computer instruction, in the process be performed, specifically comprises:
When described electronic equipment enters the first mode of operation, received by described switch switching unit and perform described steering order, being connected with described power inductance to control described charging circuit; Or
When described electronic equipment enters the second mode of operation, received by described switch switching unit and perform described steering order, being connected with described power inductance to control described reduction voltage circuit.
Optionally, described first mode of operation is charge mode, or a kind of data exchange mode USBOTG pattern; Described second mode of operation is the mode of operation except described first mode of operation.
Optionally, described electronic equipment also comprises the power supply unit be connected with described charging circuit and the first module be connected with described reduction voltage circuit, that store in described storage medium and step: received by described switch switching unit and perform described steering order, control described charging circuit and described reduction voltage circuit is connected with described power inductance respectively, corresponding computer instruction, in the process be performed, specifically comprises:
When being received by described switch switching unit and performing described steering order, open described first switch, turn off described second switch, when described charging circuit is connected with described power inductance, give the charging of described power supply unit by described charging circuit;
When being received by described switch switching unit and performing described steering order, open described second switch, turn off described first switch, when described reduction voltage circuit is connected with described power inductance, give described first module for power supply by described reduction voltage circuit.
The above, above embodiment is only in order to be described in detail the technical scheme of the application, but the explanation of above embodiment just understands method of the present invention and core concept thereof for helping, and should not be construed as limitation of the present invention.Those skilled in the art are in the technical scope that the present invention discloses, and the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (10)
1. an electronic equipment, comprising:
Circuit board;
Chip, be arranged on described circuit board, described integrated chip has charging circuit and reduction voltage circuit;
Power inductance, is parallel to the two ends of described charging circuit and described reduction voltage circuit, for carrying out filtering to electric current;
The input end of described charging circuit is connected with the external power source of described electronic equipment, and output terminal is connected with the power supply unit of described electronic equipment, is the charging of described power supply unit for utilizing described external power source;
The input end of described reduction voltage circuit is connected with feeder ear, and output terminal is connected with the first module of described electronic equipment, for being described first module for power supply.
2. electronic equipment as claimed in claim 1, it is characterized in that, described feeder ear is the output terminal of described external power source or the output terminal of described power supply unit.
3. electronic equipment as claimed in claim 2, it is characterized in that, described chip also comprises switch switching unit, one end of described switch switching unit is connected with described reduction voltage circuit with described charging circuit, the other end is connected with described power inductance, is connected with described charging circuit for controlling described power inductance with described reduction voltage circuit.
4. electronic equipment as claimed in claim 3, it is characterized in that, described switch switching unit comprises the first switch and second switch;
Described first switch series is coupled between described charging circuit and described power inductance, and described second switch is series between described reduction voltage circuit and described power inductance;
Wherein, if described first switch open, then described second switch turns off, described charging circuit and described power inductance form path, described charging circuit enters duty, and described reduction voltage circuit and described power inductance disconnect, and described reduction voltage circuit enters off working state; If described first switch OFF, then described second switch is opened, and described reduction voltage circuit and described power inductance form path, and described reduction voltage circuit enters duty, and described charging circuit and described power inductance disconnect, and described charging circuit enters off working state.
5. electronic equipment as claimed in claim 4, is characterized in that, also comprise controller in described chip, be connected with described switch switching unit, for controlling opening and shutting off of described first switch and described second switch.
6. a method of controlling switch, described method is applied to electronic equipment, and described electronic equipment includes circuit board; Be arranged on the chip on described circuit board; Be integrated in the charging circuit in described chip and reduction voltage circuit; Be parallel to the power inductance at described charging circuit and described reduction voltage circuit two ends; Switch switching unit and controller is also comprised in described chip; Described method comprises:
By described controller to described switch switching unit sending controling instruction;
Received by described switch switching unit and perform described steering order, controlling described charging circuit and described reduction voltage circuit is connected with described power inductance respectively.
7. method as claimed in claim 6, it is characterized in that, described switch switching unit comprises the first switch and second switch, describedly received by described switch switching unit and perform described steering order, control described charging circuit and described reduction voltage circuit is connected with described power inductance respectively, comprising:
Received by described switch switching unit and perform described steering order, opening described first switch, turn off described second switch, being connected with described power inductance to control described charging circuit; Or
Received by described switch switching unit and perform described steering order, opening described second switch, turning off described first switch, being connected with described power inductance to control described reduction voltage circuit.
8. method as claimed in claim 7, is characterized in that, is describedly received by described switch switching unit and performs described steering order, controls described charging circuit and described reduction voltage circuit is connected with described power inductance respectively, comprising:
When described electronic equipment enters the first mode of operation, received by described switch switching unit and perform described steering order, being connected with described power inductance to control described charging circuit; Or
When described electronic equipment enters the second mode of operation, received by described switch switching unit and perform described steering order, being connected with described power inductance to control described reduction voltage circuit.
9. method as claimed in claim 8, it is characterized in that, described first mode of operation is charge mode, or a kind of data exchange mode USBOTG pattern; Described second mode of operation is the mode of operation except described first mode of operation.
10. the method as described in as arbitrary in claim 7-9, it is characterized in that, described electronic equipment also comprises the power supply unit be connected with described charging circuit and the first module be connected with described reduction voltage circuit, describedly received by described switch switching unit and perform described steering order, control described charging circuit and described reduction voltage circuit is connected with described power inductance respectively, comprising:
When being received by described switch switching unit and performing described steering order, open described first switch, turn off described second switch, when described charging circuit is connected with described power inductance, give the charging of described power supply unit by described charging circuit;
When being received by described switch switching unit and performing described steering order, open described second switch, turn off described first switch, when described reduction voltage circuit is connected with described power inductance, give described first module for power supply by described reduction voltage circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410272825.9A CN105334937B (en) | 2014-06-18 | 2014-06-18 | A kind of electronic equipment and method of controlling switch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410272825.9A CN105334937B (en) | 2014-06-18 | 2014-06-18 | A kind of electronic equipment and method of controlling switch |
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| CN105334937A true CN105334937A (en) | 2016-02-17 |
| CN105334937B CN105334937B (en) | 2018-12-14 |
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| CN101188088A (en) * | 2006-11-15 | 2008-05-28 | 联阳半导体股份有限公司 | LED drive and display device using same |
| US8004253B2 (en) * | 2007-11-08 | 2011-08-23 | Astec International Limited | Duty cycle dependent non-linear slope compensation for improved dynamic response |
| CN102326312A (en) * | 2009-02-20 | 2012-01-18 | 法国欧陆汽车公司 | Electronic computer of automobile comprising voltage step-up device and control method |
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| CN105334937B (en) | 2018-12-14 |
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