CN207853759U - A kind of booster circuit and electronic equipment - Google Patents
A kind of booster circuit and electronic equipment Download PDFInfo
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- CN207853759U CN207853759U CN201721526182.1U CN201721526182U CN207853759U CN 207853759 U CN207853759 U CN 207853759U CN 201721526182 U CN201721526182 U CN 201721526182U CN 207853759 U CN207853759 U CN 207853759U
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Abstract
It is related to field of circuit technology, more particularly to a kind of booster circuit and electronic equipment, charge pump booster circuit is provided with before Boost circuit to carry out pre-loading to the input voltage of Boost circuit, so that compared with carrying out boosting only with Boost circuit, the input of Boost circuit, the pressure difference of output voltage reduce, so that the loss of Boost circuit reduces；In addition, not including inductive element in charge pump booster circuit, only realized and boosted by capacitive element charge and discharge, high conversion efficiency, loss are low；Therefore, when the amplitude of boosting is larger, the transfer efficiency of entire booster circuit is still higher, loss is still relatively low, avoid booster circuit loss can with boosting amplitude becomes larger and the problem of becoming larger.
Description
Technical field
The utility model is related to field of circuit technology more particularly to a kind of booster circuits and electronic equipment.
Background technology
Current portable electronic device, such as smart mobile phone, tablet computer mostly use lithium battery power supply, in electronics
In the circuit system of equipment, the supply voltage of some modules is above cell voltage, and therefore, it is necessary to the circuits in electronic equipment
Booster circuit is set in system to support the work of these modules.
The booster circuit of the prior art largely uses Boost circuit, as shown in Figure 1, it is Boost circuit
Topological structure schematic diagram；Including inductance L, capacitance C1 and C2, switch S1 and S2.The progress of work of Boost circuit is divided into
Two stages：First stage, S1 conductings, S2 are disconnected, and L energy storage, C2 electric discharges provide electric energy for load；Second stage, S1 are disconnected, S2
Conducting, L provide electric energy for load and are C2 chargings.If the turn-on time of S1 is t1, turn-off time t2, then work period T=
T1+t2, duty ratio D=t1/T, output voltage V_out=V_in/1-D, wherein V_in is input voltage.
Fig. 2 is a kind of electrical block diagram of specific Boost circuit, wherein switch S1 is specially MOS
(Metal-Oxide-Semiconductor, metal-insulator semiconductor) pipe Q, switch S2 is specially Schottky diode D1,
Then for continuous current mode, the loss in the circuit is：
The loss of inductance：Wherein, IoFor output current,For copper loss, Pc o
ForreIron loss；The loss of switch Q：
Wherein, RDS(on)For the conduction impedance of switch Q, trAnd tfThe switch time that respectively switch Q is turned on and off, fsFor switch Q's
Switching frequency, QGateFor the equivalent capacity of switch Q；
The loss of Schottky diode D1：PD1=VDF·Io；Wherein, VDFFor the forward conduction electricity of Schottky diode D1
Pressure.
By V_out=V_in/1-D it is found that the input voltage of Boost circuit differs bigger with output voltage, that is, rise
Pressure amplitude degree is bigger, then the value of 1-D is smaller, then in the case where other conditions are constant, the loss of the loss and switch Q of inductance
It can become larger；That is, existing booster circuit exists when the amplitude of boosting is larger, the loss of booster circuit is also larger to ask
Topic.
Utility model content
The utility model embodiment provides a kind of booster circuit and electronic equipment, to solve the liter of existing electronic equipment
Volt circuit is existing when the amplitude of boosting is larger, and also larger problem is lost in booster circuit.
The utility model embodiment provides a kind of booster circuit, including charge pump booster circuit and Boost circuit,
Wherein：
The charge pump booster circuit, for that will set the boost in voltage of input power to setting voltage value and export to institute
State Boost circuit；
The Boost circuit, for the setting voltage value to be boosted to setting target voltage values.
Preferably, the charge pump booster circuit includes charge pump boosting sub-circuit；
Any charge pump boosting sub-circuit includes the first capacitance module and the second capacitance module, in the first stage, described the
One capacitance module connects and discharges with the direct current input of any charge pump boosting sub-circuit, with to second capacitance module
Charge and provide the direct current of output；The direct current of second stage, any charge pump boosting sub-circuit is inputted to described first
Capacitance module charges, and the second capacitance module electric discharge is to provide the direct current of output；Wherein, any charge pump boosting
The direct current input of circuit is prime charge pump boosting of the setting input power or any charge pump boosting sub-circuit
The direct current output of circuit.
Preferably, the charge pump booster circuit includes more than two concatenated charge pumps boosting secondary circuits；Wherein, appoint
The one charge pump boosting secondary circuit includes a charge pump boosting sub-circuit or more than two charges in parallel
Pump boosting sub-circuit.
Preferably, the charge pump booster circuit includes a charge pump boosting secondary circuit；Wherein, any charge
Pump boosting secondary circuit includes more than two charge pump boosting sub-circuits in parallel.
Preferably, any charge pump boosting sub-circuit further includes first switch, second switch, third switch and the 4th
Switch, wherein：
The input terminal of the first switch is connect with the input terminal that the third switchs, and the terminals after being connected are described appoint
The input terminal of one charge pump boosting sub-circuit；The input terminal of the output end of the first switch and the second switch and described
One end of first capacitance module connects；The other end, the Yi Jisuo of the output end and first capacitance module of the third switch
State the input terminal connection of the 4th switch；The output end of the second switch is connect with one end of second capacitance module, is connected
Terminals afterwards are the output end of any charge pump boosting sub-circuit；The output end and described second of 4th switch
The other end of capacitance module is grounded；
Any charge pump boosting sub-circuit is used for, and in the first stage, is turned off the first switch and the described 4th and is opened
It closes, the second switch and third switch is connected；In second stage, the second switch and third switch are turned off,
The first switch and the 4th switch is connected.
Still optionally further, the booster circuit further includes controller, in the first stage, boosting to the charge pump
Circuit sends first control signal, and to turn off the first switch and the 4th switch, the second switch and described is connected
Third switchs；In second stage, second control signal is sent to the charge pump booster circuit, with turn off the second switch and
The first switch and the 4th switch is connected in the third switch.
Still optionally further, any charge pump boosting sub-circuit further includes third capacitance module, the third capacitance
One end of module is connect with the input terminal of any charge pump boosting sub-circuit, other end ground connection；
The third capacitance module, the direct current input progress voltage stabilizing for the sub-circuit that boosts to any charge pump.
Preferably, the Boost circuit includes a Boost boosting sub-circuit or more than two Boost in parallel
Boost sub-circuit.
Preferably, the booster circuit further includes controller, the load for being connected according to the booster circuit it is specified
Voltage value sends third to the Boost circuit and controls signal so that the Boost circuit is electric by the setting
Pressure value boosts to the load voltage value.
Correspondingly, the utility model embodiment additionally provides a kind of electronic equipment, including above-mentioned booster circuit.
Correspondingly, the utility model embodiment additionally provides a kind of step-up method, is applied to booster circuit, the boosting electricity
Road includes charge pump booster circuit and Boost circuit, the method includes：
The charge pump booster circuit is controlled by the boost in voltage for setting input power to setting voltage value and is exported to institute
State Boost circuit；
It controls the Boost circuit and the setting voltage value is boosted into setting target voltage values.
Preferably, the charge pump booster circuit includes charge pump boosting sub-circuit, any charge pump boosting sub-circuit packet
The first capacitance module and the second capacitance module are included, the boost in voltage of input power will be set extremely by controlling the charge pump booster circuit
Voltage value is set, is achieved in the following ways：
First capacitance module and any electricity are controlled for any charge pump boosting sub-circuit in the first stage
The direct current input of lotus pump boosting sub-circuit connects and discharges, to charge to second capacitance module and provide the direct current of output
Electricity；The direct current input of second stage, control any charge pump boosting sub-circuit charges to first capacitance module, described
Second capacitance module discharges to provide the direct current of output；
Wherein, the direct current input of any charge pump boosting sub-circuit is the setting input power or any electricity
The direct current output of the prime charge pump boosting sub-circuit of lotus pump boosting sub-circuit.
Preferably, the boost in voltage of input power will be set to setting voltage value and defeated by controlling the charge pump booster circuit
Go out to the Boost circuit, specifically includes：
The more than two concatenated charge pumps boosting secondary circuits of control are by the boost in voltage for setting input power to setting electricity
Pressure value is simultaneously exported to the Boost circuit；Wherein, any charge pump boosting secondary circuit includes a charge
Pump boosting sub-circuit or more than two charge pump boosting sub-circuits in parallel；Alternatively,
Control one charge pump boosting secondary circuit block will set the boost in voltage of input power to setting voltage value and defeated
Go out to the Boost circuit；Wherein, any charge pump boosting secondary circuit includes more than two electricity in parallel
Lotus pump boosting sub-circuit.
Preferably, any charge pump boosting sub-circuit further includes first switch, second switch, third switch and the 4th
Switch, the input terminal of the first switch are connect with the input terminal that the third switchs, and the terminals after being connected are described any
The input terminal of charge pump boosting sub-circuit；The input terminal of the output end of the first switch and the second switch and described the
One end of one capacitance module connects；The output end of third switch and the other end of first capacitance module and described
The input terminal connection of 4th switch；The output end of the second switch is connect with one end of second capacitance module, after being connected
Terminals be that any charge pump is boosted the output end of sub-circuit；The output end of 4th switch and second electricity
The other end of molar block is grounded；
The charge pump booster circuit is controlled by the boost in voltage for setting input power to setting voltage value and is exported to institute
Boost circuit is stated, is specifically included：
It controls the first switch and the described 4th in the first stage for any charge pump boosting sub-circuit and opens
Shutdown, the second switch and the third switch conduction；In second stage, controls the second switch and the third is opened
Shutdown, the first switch and the 4th switch conduction.
Optionally, the setting voltage value is boosted to setting target voltage values by the control Boost circuit,
It specifically includes：
A Boost boosting sub-circuit or more than two Boost boosting sub-circuits in parallel are controlled by the setting voltage
Value boosts to setting target voltage values.
The utility model has the beneficial effect that：
The utility model embodiment, which provides a kind of booster circuit and electronic equipment, charge pump booster circuit, can will set defeated
Enter the boost in voltage of power supply to setting voltage value and exports to Boost circuit；Boost circuit can be by setting electricity
Pressure value boosts to setting target voltage values.That is, being provided with charge pump booster circuit before Boost circuit with right
The input voltage of Boost circuit carries out pre-loading so that compared with carrying out boosting only with Boost circuit, Boost
The input of booster circuit, the pressure difference of output voltage reduce, so that the loss of Boost circuit reduces；In addition, charge pump
Do not include inductive element in booster circuit, only realized and boosted by capacitive element charge and discharge, high conversion efficiency, loss are low；Therefore,
When the amplitude of boosting is larger, the transfer efficiency of entire booster circuit is still higher, loss is still relatively low, avoids booster circuit
The problem of loss can become larger with boosting amplitude and be become larger.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly introduced, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art for, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 show the topological structure schematic diagram of the Boost circuit of the prior art；
Fig. 2 show a kind of specific electrical block diagram of the Boost circuit of the prior art；
Fig. 3 show the structural schematic diagram of the booster circuit in the utility model embodiment；
Fig. 4 (a) show the equivalent circuit of the boosting of the charge pump in the utility model embodiment sub-circuit in the first stage
Schematic diagram；
Fig. 4 (b) show the charge pump in the utility model embodiment boosting sub-circuit second stage equivalent circuit
Schematic diagram；
Fig. 5 show the structural schematic diagram of the boosting sub-circuit of the charge pump in the utility model embodiment；
Fig. 6 show another structural schematic diagram of the boosting sub-circuit of the charge pump in the utility model embodiment；
Fig. 7 (a) show the another kind etc. of the boosting of the charge pump in the utility model embodiment sub-circuit in the first stage
Imitate circuit diagram；
Fig. 7 (b) show the charge pump in the utility model embodiment boosting sub-circuit second stage another kind etc.
Imitate circuit diagram；
Fig. 8 show the step flow chart of the step-up method in the utility model embodiment two.
Specific implementation mode
In order to keep the purpose of this utility model, technical solution and advantage clearer, below in conjunction with attached drawing to this practicality
It is novel to be described in further detail, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work
Under the premise of all other embodiment for being obtained, shall fall within the protection scope of the present invention.
Embodiment one：
The utility model embodiment one provides a kind of booster circuit, can be applied to smart mobile phone, tablet computer, intelligent hand
The electronic equipments such as table, electronic reader.Specifically, as shown in figure 3, it is booster circuit described in the utility model embodiment one
Structural schematic diagram, it may include charge pump booster circuit 301 and Boost circuit 302, wherein：
The charge pump booster circuit 301 can be used for set the boost in voltage of input power to setting voltage value and defeated
Go out to the Boost circuit 302；
The Boost circuit 302 can be used for the setting voltage value boosting to setting target voltage values.
That is, it is electric to boost to Boost to be provided with charge pump booster circuit 301 before Boost circuit 302
The input voltage on road 302 carries out pre-loading so that compared with carrying out boosting only with Boost circuit, Boost circuit
302 input, the pressure difference of output voltage reduce, so that the loss of Boost circuit 302 reduces；In addition, charge pump liter
Do not include inductive element in volt circuit 301, only realized and boosted by capacitive element charge and discharge, high conversion efficiency, loss are low；Cause
This, when the amplitude of boosting is larger, the transfer efficiency of entire booster circuit is still higher, loss is still relatively low, avoids boosting electricity
The problem of loss on road can become larger with boosting amplitude and be become larger.
Preferably, the charge pump booster circuit 301 may include charge pump boosting sub-circuit；Any charge pump boosting son electricity
Road includes the first capacitance module C1 and the second capacitance module C2, in the first stage T1, is any electricity as shown in Fig. 4 (a)
Lotus pump boosting sub-circuit in the schematic equivalent circuit of T1, boost sub-circuit by first capacitance module and any charge pump
Direct current input connect and discharge, to charge to second capacitance module and provide the direct current of output；Second stage T2, such as
Shown in Fig. 4 (b), sub-circuit is boosted in the schematic equivalent circuit of T2, any charge pump liter for any charge pump
The direct current input of sub-circuit is pressed to charge the first capacitance module C1, the second capacitance module C2 electric discharges are to provide output
Direct current；Wherein, the direct current input of any charge pump boosting sub-circuit is the setting input power or any electricity
The direct current output of the prime charge pump boosting sub-circuit of lotus pump boosting sub-circuit.
Specifically, if the setting work period T (can flexibly being set according to actual conditions) of any charge pump boosting sub-circuit,
First stage T1 and second stage T2 respectively accounts for the 1/2 of the setting work period T, the charge and discharge duty of the second capacitance module C2
Than being 50%, then the voltage value of the second capacitance module C2 is equal to the voltage of the direct current input of any charge pump boosting sub-circuit
The sum of the voltage value of value and the first capacitance module C1, therefore, the voltage value of the second capacitance module C2 are equal to any charge pump
The output voltage values of 2 times of the voltage value of the direct current input of boosting sub-circuit, i.e., described any charge pump boosting sub-circuit are institute
State the voltage value of the direct current input of any charge pump boosting sub-circuit 2 times.
Preferably, the setting input power is concretely in the battery module or electronic equipment in electronic equipment
The other function modules that can be used for powering, the present embodiment are not limited in any way herein.
Optionally as well, the first capacitance module C1 may include a capacitance, may also comprise in a series arrangement or simultaneously
Multiple capacitances that the mode that connection mode or connection in series-parallel are combined is combined；The second capacitance module C2 may include one
A capacitance, may also comprise in a series arrangement or the mode that is combined of parallel way or connection in series-parallel combine it is multiple
Capacitance, the present embodiment are not limited in any way herein.
Preferably, the charge pump booster circuit 301 may include more than two concatenated charge pump boosting secondary circuits；Its
In, any charge pump boosting secondary circuit may include a charge pump boosting sub-circuit or more than two institutes in parallel
State charge pump boosting sub-circuit；Alternatively, the charge pump booster circuit 301 may include a charge pump boosting secondary circuit；Its
In, any charge pump boosting secondary circuit may include the charge pump boosting sub-circuit of more than two parallel connections.
That is, the charge pump booster circuit 301 be in addition to can only include that charge pump is boosted other than sub-circuit,
The sub-circuit that can also be boosted by multiple charge pumps is combined in a manner of cascading and/or is in parallel to be constituted.Positioned at the charge pump of same level-one
The sub-circuit that boosts constitutes a charge pump boosting secondary circuit, the output electricity for secondary circuit that its previous stage charge pump is boosted
Either the voltage for setting input power is double and exports to next stage or as the charge pump booster circuit 301 for pressure
Output；Multiple charge pump boosting secondary circuit cascades may make the boosting amplitude bigger of the charge pump booster circuit 301.Appoint
One charge pump boost in secondary circuit multiple charge pumps boosting sub-circuit in parallel can to the total current in the booster circuit into
Row shunting so that the electric current for flowing through each charge pump boosting sub-circuit is smaller, therefore so that in charge pump boosting sub-circuit etc.
The loss for imitating impedance is relatively low, and then the loss of the charge pump booster circuit 301 may make to reduce.
Optionally, as shown in figure 5, it is the structural schematic diagram of any charge pump boosting sub-circuit, any charge pump
Boosting sub-circuit may also include first switch S1, second switch S2, third switch S2 and the 4th switch S4, wherein：
The input terminal of the first switch S1 is connect with the input terminal of the third switch S3, and the terminals after being connected are institute
State the input terminal of any charge pump boosting sub-circuit；The input terminal of the output end of the first switch S1 and the second switch S2
And one end connection of the first capacitance module C1；The output end of the third switch S3 is with the first capacitance module C1's
The input terminal of the other end and the 4th switch S4 connect；The output end of the second switch S2 and the second capacitance mould
One end of block C2 connects, and the terminals after being connected are the output end of any charge pump boosting sub-circuit；4th switch
The other end of the output end of S4 and the second capacitance module C2 are grounded；
Any charge pump boosting sub-circuit can be used for, in the first stage T1, turn off the first switch S1 and described
The second switch S2 and the third switch S3 is connected in 4th switch S4；At this point, any charge pump boosting sub-circuit
Shown in equivalent circuit diagram such as Fig. 4 (a) (assuming that the equiva lent impedance of the second switch S2 and the third switch S3 are zero)；
Second stage T2 turns off the second switch S2 and the third switch S3, and the first switch S1 and the described 4th is connected and opens
Close S4；At this point, (assuming that the first switch S1 shown in equivalent circuit diagram such as Fig. 4 (b) of any charge pump boosting sub-circuit
Zero) equiva lent impedance with the 4th switch S4 is.
Preferably, the first switch S1, the second switch S2, the third switch S3 and the 4th switch S4
Concretely metal-oxide-semiconductor；Since the first switch S1, the second switch S2, the third switch S3 and the described 4th are opened
When the conducting resistance of pass S4 is very low, therefore, the loss of any charge pump boosting sub-circuit and fever very little, energy conversion efficiency is very
It is high；And then it can further improve the transfer efficiency of booster circuit and the safety of electronic equipment.In addition, above-mentioned each switch also may be used
Using the switching device of other types, the present embodiment is not limited in any way herein.
Still optionally further, as shown in fig. 6, any charge pump boosting sub-circuit may also include third capacitance module
C3, one end of the third capacitance module C3 are connect with the input terminal of any charge pump boosting sub-circuit, other end ground connection；
The third capacitance module C3 can be used for carrying out the direct current input of any charge pump boosting sub-circuit steady
Pressure.
When any charge pump boosting sub-circuit further includes third capacitance module C3, T1 in the first stage, any charge
Shown in equivalent circuit such as Fig. 7 (a) of pump boosting sub-circuit, wherein R2 and R3 is respectively second switch S2 and third switch S3
Equiva lent impedance is connected；Second stage T2, shown in equivalent circuit such as Fig. 7 (b) of any charge pump boosting sub-circuit, wherein
R1 and R4 is respectively the conducting equiva lent impedance of first switch S1 and the 4th switch S4.Equivalent circuit shown in Fig. 7 (a) and Fig. 7 (b)
Operation principle is similar with equivalent circuit shown in Fig. 4 (a) and Fig. 4 (b), and details are not described herein for the present embodiment.
Still optionally further, the third capacitance module C3 may include a capacitance, may also comprise in a series arrangement or
Multiple capacitances that the mode that parallel way or connection in series-parallel are combined is combined, the present embodiment are not limited in any way herein.
It should be noted that the booster circuit may also include controller, for T1 in the first stage, to the charge pump
Booster circuit 301 sends first control signal, to turn off the first switch S1 and the 4th switch S4, conducting described second
The switch S2 and third switch S3；For in second stage T2, the second control letter to be sent to the charge pump booster circuit 301
Number, to turn off the second switch S2 and the third switch S3, the first switch S1 and the 4th switch S4 is connected.
Preferably, the Boost circuit 302 includes a Boost boosting sub-circuit or more than two in parallel
Boost boosting sub-circuits.That is, more than two Boost boostings sub-circuits can also be used in the Boost circuit 302
Structure in parallel flows through every road Boost and boosts the electric current of sub-circuit to reduce, so reduce in Boost circuit 302 etc.
Imitate the loss of impedance.Boost boost sub-circuit particular circuit configurations similarly to the prior art, as shown in Figure 1 or 2, this reality
Applying example, details are not described herein.
It should be noted that the setting target voltage values can be according to the load voltage value spirit of the load of the booster circuit
Setting living, similarly to the prior art, details are not described herein for the present embodiment for the concrete operating principle of the Boost boostings sub-circuit.
Optionally, the controller, it may also be used for according to the load voltage value of the load of the booster circuit, to described
Boost circuit 302 sends third and controls signal so that the Boost circuit 302 is by the charge pump booster circuit
The setting voltage value of 301 outputs boosts to the load voltage value.
It should be noted that the controller can be realized by the set-up function module in the application processor of electronic equipment,
Also it can realize that the present embodiment is not limited in any way herein by the processor chips being specially arranged.
In conclusion the booster circuit that the utility model embodiment provides, it may include charge pump booster circuit and Boost liters
Volt circuit；The charge pump booster circuit can be used for set the boost in voltage of input power to setting voltage value and export extremely
The Boost circuit；The Boost circuit can be used for the setting voltage value boosting to setting target voltage
Value.That is, being provided with charge pump booster circuit before Boost circuit with the input electricity to Boost circuit
Pressure carries out pre-loading so that compared with carrying out boosting only with Boost circuit, the input of Boost circuit, output electricity
The pressure difference of pressure reduces, so that the loss of Boost circuit reduces；In addition, not including perception in charge pump booster circuit
Element only realizes by capacitive element charge and discharge and boosts that high conversion efficiency, loss are low；Therefore, whole when the amplitude of boosting is larger
The transfer efficiency of a booster circuit is still higher, loss is still relatively low, and the loss for avoiding booster circuit can be with boosting amplitude
The problem of becoming larger and becoming larger.
Conceived based on same utility model, the utility model embodiment additionally provides a kind of electronic equipment, including above-mentioned
Booster circuit.
Embodiment two：
Conceived based on same utility model, the utility model embodiment two provides a kind of step-up method, can be applied to
The boosting rectifier control of booster circuit in the electronic equipments such as smart mobile phone, tablet computer, smartwatch, electronic reader；Such as Fig. 3 institutes
Show, the booster circuit includes charge pump booster circuit 301 and Boost circuit 302；Specifically, as shown in figure 8, its
For the step flow chart of step-up method described in the utility model embodiment two, the method may include：
Step 801：Control charge pump booster circuit 301 will set the boost in voltage of input power to setting voltage value and defeated
Go out to Boost circuit 302.
Step 802：It controls the Boost circuit 302 and the setting voltage value is boosted into setting target voltage values.
That is, it is electric to boost to Boost to be provided with charge pump booster circuit 301 before Boost circuit 302
The input voltage on road 302 carries out pre-loading so that compared with carrying out boosting only with Boost circuit, Boost circuit
302 input, the pressure difference of output voltage reduce, so that the loss of Boost circuit 302 reduces；In addition, charge pump liter
Do not include inductive element in volt circuit 301, only realized and boosted by capacitive element charge and discharge, high conversion efficiency, loss are low；Cause
This, when the amplitude of boosting is larger, the transfer efficiency of entire booster circuit is still higher, loss is still relatively low, avoids boosting electricity
The problem of loss on road can become larger with boosting amplitude and be become larger.
Preferably, the charge pump booster circuit 301 may include charge pump boosting sub-circuit, any charge pump boosting son electricity
Road includes the first capacitance module C1 and the second capacitance module C2；
The charge pump booster circuit 301 is controlled by the boost in voltage for setting input power to voltage value is set, is to pass through
What following manner was realized：
For any charge pump boosting sub-circuit, in the first stage, as shown in Fig. 4 (a), first capacitance module is controlled
C1 connects and discharges with the direct current input of any charge pump boosting sub-circuit, to charge simultaneously to the second capacitance module C2
The direct current of output is provided；Second stage, as shown in Fig. 4 (b), the direct current input of control any charge pump boosting sub-circuit
It charges to the first capacitance module C1, the second capacitance module C2 electric discharges are to provide the direct current of output；Wherein, described
Before the direct current input of one charge pump boosting sub-circuit is the setting input power or any charge pump boosting sub-circuit
The direct current output of grade charge pump boosting sub-circuit.
Preferably, step 801 controls the charge pump booster circuit 301 and extremely sets the boost in voltage for setting input power
Voltage value is simultaneously exported to the Boost circuit 302, may particularly include：
The more than two concatenated charge pumps boosting secondary circuits of control are by the boost in voltage for setting input power to setting electricity
Pressure value is simultaneously exported to the Boost circuit 302；Wherein, any charge pump boosting secondary circuit includes described in one
Charge pump boosting sub-circuit or more than two charge pump boosting sub-circuits in parallel；Alternatively,
Control one charge pump boosting secondary circuit block will set the boost in voltage of input power to setting voltage value and defeated
Go out to the Boost circuit 302；Wherein, any charge pump boosting secondary circuit includes more than two institutes in parallel
State charge pump boosting sub-circuit.
That is, the charge pump booster circuit 301 be in addition to can only include that charge pump is boosted other than sub-circuit,
The sub-circuit that can also be boosted by multiple charge pumps is combined in a manner of cascading and/or is in parallel to be constituted.Positioned at the charge pump of same level-one
The sub-circuit that boosts constitutes a charge pump boosting secondary circuit, the output electricity for secondary circuit that its previous stage charge pump is boosted
Either the voltage for setting input power is double and exports to next stage or as the charge pump booster circuit 301 for pressure
Output；Multiple charge pump boosting secondary circuit cascades may make the boosting amplitude bigger of the charge pump booster circuit 301.Appoint
One charge pump boost in secondary circuit multiple charge pumps boosting sub-circuit in parallel can to the total current in the booster circuit into
Row shunting so that the electric current for flowing through each charge pump boosting sub-circuit is smaller, therefore so that in charge pump boosting sub-circuit etc.
The loss for imitating impedance is relatively low, and then the loss of the charge pump booster circuit 301 may make to reduce.
Still optionally further, as shown in figure 5, any charge pump boosting sub-circuit further includes first switch S1, second
Switch S2, third switch S3 and the 4th switch S4, the input terminal of the input terminal of the first switch S1 and the third switch S3
Connection, the terminals after being connected are the input terminal of any charge pump boosting sub-circuit；The output end of the first switch S1
It is connect with one end of the input terminal of the second switch S2 and the first capacitance module C1；The output of the third switch S3
End is connect with the input terminal of the other end of the first capacitance module C1 and the 4th switch S4；The second switch S2
Output end connect with one end of the second capacitance module C2, the terminals after being connected are any charge pump boosting son electricity
The output end on road；The other end of the output end of the 4th switch S4 and the second capacitance module C2 are grounded；
Correspondingly, step 801 controls the charge pump booster circuit 301 and extremely sets the boost in voltage for setting input power
Voltage value is simultaneously exported to the Boost circuit 302, may particularly include：
The first switch S1 and the described 4th is controlled for any charge pump boosting sub-circuit in the first stage
Switch S4 shutdowns, the second switch S2 and third switch S3 conductings；In second stage, control the second switch S2 and
The third switch S3 shutdowns, the first switch S1 and the 4th switch S4 conductings.
Preferably, the first switch S1, the second switch S2, the third switch S3 and the 4th switch S4
Concretely metal-oxide-semiconductor；Since the first switch S1, the second switch S2, the third switch S3 and the described 4th are opened
When the conducting resistance of pass S4 is very low, therefore, the loss of any charge pump boosting sub-circuit and fever very little, energy conversion efficiency is very
It is high；And then it can further improve the transfer efficiency of booster circuit and the safety of electronic equipment.In addition, above-mentioned each switch also may be used
Using the switching device of other types, the present embodiment is not limited in any way herein.
Optionally, step 802 controls the Boost circuit 302 and the setting voltage value is boosted to setting target
Voltage value may particularly include：
A Boost boosting sub-circuit or more than two Boost boosting sub-circuits in parallel are controlled by the setting voltage
Value boosts to setting target voltage values.
That is, the knot of more than two Boost boostings sub-circuit parallel connections can also be used in the Boost circuit 302
Structure flows through every road Boost and boosts the electric current of sub-circuit to reduce, and then reduces equiva lent impedance in Boost circuit 302
Loss.Similarly to the prior art, as shown in Figure 1 or 2, the present embodiment is herein for the particular circuit configurations of Boost boosting sub-circuits
It repeats no more.
The setting target voltage values can be flexibly arranged according to the load voltage value of the load of the booster circuit, described
Similarly to the prior art, details are not described herein for the present embodiment for the specific control principle of Boost boosting sub-circuits.
Optionally as well, the setting voltage value is boosted to setting target by the control Boost circuit 302
Voltage value may particularly include：
According to the load voltage value of the load of the booster circuit, the Boost circuit 302 is controlled by the charge
The setting voltage value that pump booster circuit 301 exports boosts to the load voltage value.
It should be noted that the subject of implementation of the booster circuit provided in this embodiment can be at the application of electronic equipment
The set-up function module in device is managed, or the processor chips being specially arranged, the present embodiment are not limited in any way herein.
In conclusion the step-up method that the utility model embodiment provides, is applied to booster circuit, the booster circuit packet
Include charge pump booster circuit and Boost circuit；It can control the charge pump booster circuit that will set the electricity of input power
Pressure boosts to setting voltage value and exports to the Boost circuit；And the control Boost circuit is set described
Constant voltage value boosts to setting target voltage values.That is, being provided with charge pump booster circuit before Boost circuit
To carry out pre-loading to the input voltage of Boost circuit so that compared with carrying out boosting only with Boost circuit,
The input of Boost circuit, the pressure difference of output voltage reduce, so that the loss of Boost circuit reduces；In addition,
Do not include inductive element in charge pump booster circuit, is only realized and boosted by capacitive element charge and discharge, high conversion efficiency, loss
It is low；Therefore, when the amplitude of boosting is larger, the transfer efficiency of entire booster circuit is still higher, loss is still relatively low, avoids liter
The problem of loss of volt circuit can become larger with boosting amplitude and be become larger.
In addition, any number of elements in drawing and description be used to example and it is unrestricted and it is any name all only
For distinguishing, without any restrictions meaning.
Although the preferred embodiment of the utility model has been described, once a person skilled in the art knows basic
Creative concept, then additional changes and modifications may be made to these embodiments.It is wrapped so the following claims are intended to be interpreted as
It includes preferred embodiment and falls into all change and modification of the scope of the utility model.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (9)
1. a kind of booster circuit, which is characterized in that including charge pump booster circuit and Boost circuit, wherein：
The charge pump booster circuit, for that will set the boost in voltage of input power to setting voltage value and export to described
Boost circuit；The charge pump booster circuit includes charge pump boosting sub-circuit, wherein：Any charge pump boosting son electricity
Road includes the first capacitance module and the second capacitance module, in the first stage, first capacitance module and any charge pump
The direct current input of boosting sub-circuit connects and discharges, to charge to second capacitance module and provide the direct current of output；The
The direct current input of two-stage, any charge pump boosting sub-circuit charge to first capacitance module, second capacitance
Module discharge is to provide the direct current of output；Wherein, the direct current input of any charge pump boosting sub-circuit is the setting
The direct current output of the prime charge pump boosting sub-circuit of input power or any charge pump boosting sub-circuit；Any electricity
Lotus pump booster circuit sets the work period as T, and first stage and the second stage respectively account for the setting work period T's
1/2；
The Boost circuit, for the setting voltage value to be boosted to setting target voltage values.
2. booster circuit as described in claim 1, which is characterized in that
The charge pump booster circuit includes more than two concatenated charge pumps boosting secondary circuits；Wherein, any charge
Pump boosting secondary circuit includes a charge pump boosting sub-circuit or more than two charge pump boosting son electricity in parallel
Road.
3. booster circuit as described in claim 1, which is characterized in that
The charge pump booster circuit includes a charge pump boosting secondary circuit；Wherein, any charge pump boosting is secondary
Circuit includes more than two charge pump boosting sub-circuits in parallel.
4. the booster circuit as described in claims 1 to 3 is any, which is characterized in that any charge pump boosting sub-circuit is also
It is switched including first switch, second switch, third switch and the 4th, wherein：
The input terminal of the first switch is connect with the input terminal that the third switchs, and the terminals after being connected are any electricity
The input terminal of lotus pump boosting sub-circuit；The input terminal and described first of the output end of the first switch and the second switch
One end of capacitance module connects；The output end of third switch and the other end of first capacitance module and described the
The input terminal connection of four switches；The output end of the second switch is connect with one end of second capacitance module, after being connected
Terminals are the output end of any charge pump boosting sub-circuit；The output end and second capacitance of 4th switch
The other end of module is grounded；
Any charge pump boosting sub-circuit is used for, and in the first stage, is turned off the first switch and the 4th switch, is led
Lead to the second switch and third switch；In second stage, the second switch and third switch are turned off, institute is connected
State first switch and the 4th switch.
5. the booster circuit stated such as claim 4, which is characterized in that further include controller：
The controller, in the first stage, first control signal being sent to the charge pump booster circuit, described in shutdown
First switch and the 4th switch, are connected the second switch and third switch；In second stage, to the charge pump
Booster circuit sends second control signal, is switched with turning off the second switch and the third, be connected the first switch and
4th switch.
6. booster circuit as claimed in claim 4, which is characterized in that any charge pump boosting sub-circuit further includes third
Capacitance module, one end of the third capacitance module are connect with the input terminal of any charge pump boosting sub-circuit, the other end
Ground connection；
The third capacitance module, the direct current input progress voltage stabilizing for the sub-circuit that boosts to any charge pump.
7. booster circuit as described in claim 1, which is characterized in that the Boost circuit includes that a Boost boosts
Sub-circuit or more than two Boost boosting sub-circuits in parallel.
8. booster circuit as described in claim 1, which is characterized in that further include controller：
The controller, the load voltage value of the load for being connected according to the booster circuit, to the Boost circuit
It sends third and controls signal so that the setting voltage value is boosted to the load voltage value by the Boost circuit.
9. a kind of electronic equipment, which is characterized in that including any booster circuit of claim 1~8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721526182.1U CN207853759U (en) | 2017-11-15 | 2017-11-15 | A kind of booster circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721526182.1U CN207853759U (en) | 2017-11-15 | 2017-11-15 | A kind of booster circuit and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN207853759U true CN207853759U (en) | 2018-09-11 |
Family
ID=63422365
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721526182.1U Active CN207853759U (en) | 2017-11-15 | 2017-11-15 | A kind of booster circuit and electronic equipment |
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| Country | Link |
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| CN (1) | CN207853759U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394971A (en) * | 2021-06-29 | 2021-09-14 | 合肥市汤诚集成电路设计有限公司 | Charge pump boost control circuit |
| CN114420057A (en) * | 2021-12-28 | 2022-04-29 | 荣耀终端有限公司 | Backlight power supply, display device and electronic equipment |
-
2017
- 2017-11-15 CN CN201721526182.1U patent/CN207853759U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394971A (en) * | 2021-06-29 | 2021-09-14 | 合肥市汤诚集成电路设计有限公司 | Charge pump boost control circuit |
| CN113394971B (en) * | 2021-06-29 | 2021-12-21 | 合肥市汤诚集成电路设计有限公司 | Charge pump boost control circuit |
| CN114420057A (en) * | 2021-12-28 | 2022-04-29 | 荣耀终端有限公司 | Backlight power supply, display device and electronic equipment |
| WO2023124155A1 (en) * | 2021-12-28 | 2023-07-06 | 荣耀终端有限公司 | Backlight power supply, display apparatus, and electronic device |
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