CN105490531B - A kind of frequency multiplier circuit and control method - Google Patents
A kind of frequency multiplier circuit and control method Download PDFInfo
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- CN105490531B CN105490531B CN201511024771.5A CN201511024771A CN105490531B CN 105490531 B CN105490531 B CN 105490531B CN 201511024771 A CN201511024771 A CN 201511024771A CN 105490531 B CN105490531 B CN 105490531B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/13—Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals
Abstract
The present invention provides a kind of frequency multiplier circuit and control method, the frequency multiplier circuit includes：The first branch and the second branch in parallel；From the first end of the first branch to second end, the first branch includes the first switch group being sequentially connected in series and second switch group；From the first end of the second branch to second end, the second branch includes the third switching group and the 4th switching group being sequentially connected in series；Respectively include the switching tube of N number of parallel connection, N >=2 in the first switch group, the second switch group, the third switching group and the 4th switching group；The first end of the first branch connects first voltage signal with the first end of the second branch, the second end of the first branch connects second voltage signal with the second end of the second branch, and the voltage value of the first voltage signal is more than the voltage value of the second voltage signal.As it can be seen that frequency multiplier circuit provided in an embodiment of the present invention, does not need the elements such as inductance and transformer, to reduce cost and circuit volume.
Description
Technical field
The present invention relates to electronic technology fields, more particularly, to a kind of frequency multiplier circuit and control method.
Background technology
With the development of electronic technology, it is used for the frequency multiplier circuit of large-power occasions, is increasingly paid close attention to by user.
Multiple switch pipe is generally included in the frequency multiplier circuit for large-power occasions, utilizes pulse width modulation (English：
Pulse Width Modulation, referred to as：PWM) technology controls multiple switch pipe.Such as Fig. 1 shows a kind of biography
The frequency multiplier circuit of system, the frequency multiplier circuit include switching tube S1-S4, transformer T, filter inductance L and rectifier diode D1-D4, Vin
For input voltage, Vout is output voltage.The frequency multiplier circuit is realized by the phase shifting angle between controlling two bridge arms of prime to input
The frequency multiplication of voltage.
Further include the elements such as filter inductance and transformer other than switching tube as it can be seen that in frequency multiplier circuit shown in FIG. 1,
And switching tube is compared, not only cost is relatively high for inductance and transformer, but also causes the increase of the volume of entire circuit.
Invention content
Present invention solves the technical problem that being to provide a kind of frequency multiplier circuit and control method, inductance and transformer are not needed
Equal elements, to reduce cost and circuit volume.
For this purpose, the technical solution that the present invention solves technical problem is：
The present invention provides a kind of frequency multiplier circuits, including：The first branch and the second branch in parallel；
From the first end of the first branch to second end, the first branch include the first switch group that is sequentially connected in series and
Second switch group；From the first end of the second branch to second end, the second branch includes the third switch being sequentially connected in series
Group and the 4th switching group；In the first switch group, the second switch group, the third switching group and the 4th switching group
Respectively include the switching tube of N number of parallel connection, N >=2；
The first end of the first branch connects first voltage signal with the first end of the second branch, described first
The second end on road connects second voltage signal with the second end of the second branch, and the voltage value of the first voltage signal is more than
The voltage value of the second voltage signal；The first switch group, the second switch group, the third switching group and described
The control terminal of each switching tube is for receiving control signal in four switching groups；
The connecting node and the third switching group and the described 4th of the first switch group and the second switch group
The connecting node of switching group is the output end of the frequency multiplier circuit, and the output end is used to export the frequency multiplication letter of the control signal
Number, the frequency of the frequency-doubled signal is 2N times of the frequency of the control signal.
Optionally, the control signal makes the first switch group and the 4th switching tube group work, described second
Switching group and the third switching group do not work；Or so that the second switch group and third switching group work, it is described
First switch group and the 4th switching tube group do not work.
Optionally, if the control signal makes first switch group and the 4th switching tube group work, described second opens
Third switching group described in Guan Zuhe does not work；
The control signal includes the first signal group and fourth signal group, and the first signal group is for being input to described the
The control terminal of each switching tube in one switching group, the fourth signal group is for being input to each switch in the 4th switching group
The control terminal of pipe；
The first signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively,
It is D that the fourth signal group, which includes N number of duty ratio, and phase differs the pwm signal of 360 °/N successively, and the described 4th
N number of pwm signal in N number of pwm signal in signal group, with the first signal group, phase differ 180 °/N respectively.
Optionally, if the control signal makes the second switch group and the third switching group work, described first
Switching group and the 4th switching tube group do not work；
The control signal includes second signal group and third signal group, and the second signal group is for being input to described the
The control terminal of each switching tube in two switching groups, the third signal group is for being input to each switch in the third switching group
The control terminal of pipe；
The third signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively,
It is D that the second signal group, which includes N number of duty ratio, and phase differs the pwm signal of 360 °/N successively, and described second
N number of pwm signal in N number of pwm signal in signal group, with the third signal group, phase differ 180 °/N respectively.
Optionally, further include：
Control circuit, for generating the control signal, and to the first switch group, the second switch group, described
The control terminal of each switching tube exports the control signal in third switching group and the 4th switching group.
Optionally, the control circuit includes：
Comparison circuit, the difference signal for obtaining feedback signal and reference signal in closed system believe the difference
Number output is to PID control circuit；
The PID control circuit exports after the difference signal is carried out PID processing as the reference signal
To generative circuit；
The generative circuit is believed for generating the control according to the reference signal and the phase control signal received
Number, and each switch into the first switch group, the second switch group, the third switching group and the 4th switching group
The control terminal of pipe exports the control signal.
Optionally, in the first switch group, the second switch group, the third switching group and the 4th switching group
Each switching tube, is parallel with backward dioded.
The present invention provides a kind of control methods of frequency multiplier circuit, are used in any of the above-described frequency multiplier circuit, the method packet
It includes：
It is each into the first switch group, the second switch group, the third switching group and the 4th switching group
The control terminal input control signal of switching tube so that the first switch group and the 4th switching tube group work, described second
Switching group and the third switching group do not work；Or so that the second switch group and third switching group work, it is described
First switch group and the 4th switching tube group do not work.
Optionally, if the control signal makes first switch group and the 4th switching tube group work, described second opens
Third switching group described in Guan Zuhe does not work；
The control signal includes the first signal group and fourth signal group, and the first signal group is for being input to described the
The control terminal of each switching tube in one switching group, the fourth signal group is for being input to each switch in the 4th switching group
The control terminal of pipe；
The first signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively,
It is D that the fourth signal group, which includes N number of duty ratio, and phase differs the pwm signal of 360 °/N successively, and the described 4th
N number of pwm signal in N number of pwm signal in signal group, with the first signal group, phase differ 180 °/N respectively.
Optionally, if the control signal makes the second switch group and the third switching group work, described first
Switching group and the 4th switching tube group do not work；
The control signal includes second signal group and third signal group, and the second signal group is for being input to described the
The control terminal of each switching tube in two switching groups, the third signal group is for being input to each switch in the third switching group
The control terminal of pipe；
The third signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively,
It is D that the second signal group, which includes N number of duty ratio, and phase differs the pwm signal of 360 °/N successively, and described second
N number of pwm signal in N number of pwm signal in signal group, with the third signal group, phase differ 180 °/N respectively.
According to the above-mentioned technical solution, an embodiment of the present invention provides a kind of frequency multiplier circuits, including in parallel first
Road and the second branch, wherein the first branch includes the first switch group being sequentially connected in series and second switch group；Described second
Road includes the third switching group and the 4th switching group being sequentially connected in series；The switching tube of N number of parallel connection, N are respectively included in each switching group
≥2.As it can be seen that frequency multiplier circuit provided in an embodiment of the present invention, does not need the elements such as inductance and transformer, to reduce cost and
Circuit volume.Also, the frequency multiplier circuit in the embodiment of the present invention can realize 2N frequencys multiplication, therefore, the switch frequency of each switching tube
Rate need not be very high, but can improve the switching frequency of entire frequency multiplier circuit, for example, the switching frequency of each switching tube is
25KHz, then the switching frequency of frequency multiplier circuit can reach 25 × 2N KHz.
Description of the drawings
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present application, for
For those of ordinary skill in the art, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is a kind of topology of frequency multiplier circuit in the prior art；
Fig. 2 is a kind of structural schematic diagram of embodiment of frequency multiplier circuit provided in an embodiment of the present invention；
Fig. 3 is a kind of specific topology of frequency multiplier circuit provided in an embodiment of the present invention；
Fig. 4 is a kind of waveform diagram of operating mode of topology shown in Fig. 3；
Fig. 5 is the waveform diagram of another operating mode of topology shown in Fig. 3；
Fig. 6 is the structural schematic diagram of another embodiment of frequency multiplier circuit provided in an embodiment of the present invention；
The flow diagram of Fig. 7 control methods provided in an embodiment of the present invention.
Specific implementation mode
Referring to Fig. 2, the present invention provides a kind of device embodiment of frequency multiplier circuit, the frequency multiplier circuit packet of the present embodiment
It includes：The first branch and the second branch.
From the first end of the first branch to the second end of the first branch, the first branch includes be sequentially connected in series
One switching group and second switch group, that is to say, that first end of the first end of first switch group as the first branch, first switch
The first end of the second end connection second switch group of group, the second end of the second end of second switch group as the first branch.
From the first end of the second branch to second end, the second branch include the third switching group that is sequentially connected in series and
4th switching group, that is to say, that first end of the first end of third switching group as the second branch, the second end of third switching group
Connect the first end of the 4th switching group, the second end of the second end of the 4th switching group as the second branch.
Wherein, each in the first switch group, the second switch group, the third switching group and the 4th switching group
Include the switching tube of N number of parallel connection, N >=2.The first switch group, the second switch group, the third switching group and described
The control terminal of each switching tube is for receiving control signal in four switching groups.
The first end of the first end of the first branch and the second branch, connection first voltage signal, described first
The second end of branch connects second voltage signal with the second end of the second branch, and the voltage value of the first voltage signal is big
In the voltage value of the second voltage signal.For example, first voltage signal and second voltage signal can be supply voltage respectively
The positive voltage signal and negative supply voltage signal of offer.
The midpoint of the first branch, i.e., the connecting node of described first switch group and the second switch group, Yi Jisuo
State the midpoint of the second branch, i.e., the connecting node of the described third switching group and the 4th switching group is the defeated of the frequency multiplier circuit
Outlet, the output end are used to export the frequency-doubled signal of the control signal, and the frequency of the frequency-doubled signal is believed for the control
Number 2N times of frequency.
According to the above-mentioned technical solution, a kind of frequency multiplier circuit is present embodiments provided, can be realized to control signal
2N frequencys multiplication, N >=2.The frequency multiplier circuit of the present embodiment is full-bridge topology, including the first branch and the second branch in parallel, wherein institute
It includes the first switch group being sequentially connected in series and second switch group to state the first branch；The second branch includes the third being sequentially connected in series
Switching group and the 4th switching group；The switching tube of N number of parallel connection is respectively included in each switching group.As it can be seen that the embodiment of the present invention provides
Frequency multiplier circuit, do not need the elements such as inductance and transformer, to reduce cost and circuit volume, be particularly suitable for use as curing
Treat the power amplifier in industry.
In embodiments of the present invention, the first switch group, the second switch group, the third switching group and described
Each switching tube in four switching groups, can be parallel with backward dioded, be used for oad freewheels.Switch in the embodiment of the present invention
Pipe may include insulated gate bipolar transistor (English：Insulated Gate Bipolar Transistor, referred to as：
IGBT), Metal-Oxide Semiconductor field-effect transistor (abbreviation：Metal-oxide-semiconductor) etc..
Illustrate the working method of the frequency multiplier circuit of the present embodiment below.
The first switch group and the 4th switching group are a pair of switches group or work at the same time or not work simultaneously
Make.When the two switching groups work at the same time, and when second switch group and third switching group do not work, the voltage of P points in Fig. 2
Value is equal to the voltage value of first voltage signal, and the voltage value of N points is equal to the voltage value of second voltage signal, since first voltage is believed
Number voltage value be more than the voltage value of second voltage signal, therefore P points and N points generate voltage difference.
Likewise, the second switch group and the third switching group are a pair of switches group or work at the same time or together
When do not work.When the two switching groups work at the same time, and when first switch group and the 4th switching group do not work, P points in Fig. 2
Voltage value be equal to the voltage value of second voltage signal, the voltage values of N points is equal to the voltage value of first voltage signal, due to first
The voltage value of voltage signal is more than the voltage value of second voltage signal, therefore N points and P points generate voltage difference.
Therefore, in the embodiment of the present invention, the control signal for being input to the control terminal makes the first switch group
It works with the 4th switching tube group, the second switch group and the third switching group do not work；Or so that described second
Switching group and third switching group work, the first switch group and the 4th switching tube group do not work.
Illustrate the specific waveform for controlling signal by taking N=2 as an example below.
As N=2, the frequency multiplier circuit in the embodiment of the present invention is as shown in figure 3, first switch group includes the switching tube of parallel connection
Va1 and switching tube Va2, second switch group include the switching tube Vb1 and switching tube Vb2 of parallel connection, and third switching group includes in parallel
Switching tube Vc1 and switching tube Vc2, the 4th switching group include the switching tube Vd1 and switching tube Vd2 of parallel connection.Assuming that first voltage is believed
Number be positive voltage signal+HV, second voltage signal be negative supply voltage signal-HV.
First illustrate that the control signal makes first switch group and the 4th switching tube group work, the second switch group
With the idle situation of third switching group.
The control signal includes the first signal group and fourth signal group, and the first signal group is for being input to described the
The control terminal of each switching tube in one switching group, the fourth signal group is for being input to each switch in the 4th switching group
The control terminal of pipe.The first signal group includes the drive signal Va1-Driver for the control terminal for being input to switching tube Va1, and
It is input to the drive signal Va2-Driver of the control terminal of switching tube Va2, the fourth signal group includes being input to switching tube Vd1
Control terminal drive signal Vd1-Driver, and be input to the drive signal Vd2-Driver of the control terminal of switching tube Vd2.
As shown in figure 4, drive signal Va1-Driver, drive signal Va2-Driver, drive signal Vd1-Driver and
The duty ratio of drive signal Vd2-Driver is D, 1/4≤D≤1/2.Drive signal Va1-Driver and drive signal Va2-
The phase of Driver differs 180 °, 180 ° of the phase difference of drive signal Vd1-Driver and drive signal Vd2-Driver.It drives
The phase difference of dynamic signal Va1-Driver and drive signal Vd1-Driver is 90 °, and drive signal Va2-Driver and driving are believed
The phase difference of number Vd2-Driver is 90 °.
It is opened if drive signal Va1-Driver or drive signal Va2-Driver is high level at any one moment
Pipe Va1 or switching tube Va2 conductings are closed, the signal P_out of P points is high level；If drive signal Va1-Driver and driving are believed
When number Va2-Driver is low level, switching tube Va1 and switching tube Va2 shutdowns, the signal P_out of P points is low level.It is in office
One moment, if either drive signal Vd2-Driver is high level switching tube Vd1 or switch to drive signal Vd1-Driver
Pipe Vd2 conductings, therefore the signal N_out of N points is low level；If drive signal Vd1-Driver and drive signal Vd2-Driver
Be low level, switching tube Vd1 and switching tube Vd2 shutdowns, at this time the electric current of P points after N points, by switching tube Vc1 or
The anti-paralleled diode of switching tube Vc2 flows to positive voltage signal+HV, therefore the signal N_out of N points is high level.Therefore,
Signal (i.e. frequency-doubled signal) PN_out of the signal of P points, the signal of N points and P points to N points is as shown in Figure 4.As can be seen that times
The frequency of frequency signal PN_out is 4 times of the frequency of any one drive signal, also, the duty ratio of frequency-doubled signal PN_out is
4D-1。
In the embodiment of the present invention, N is not only limited to 2, but can be the arbitrary integer more than or equal to 2, and at this time first
Signal group and fourth signal group need the relationship met to be：
The first signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively,The fourth signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively.Also
It is to say, for the 1st in the first signal group (or fourth signal group), the 2nd, the 3rd ... for n-th pwm signal,
The phase of 1st pwm signal and the 2nd pwm signal differs 360 °/N, the phase phase of the 2nd pwm signal and the 3rd pwm signal
Poor 360 °/N, and so on, the phase of N-1 pwm signal and n-th pwm signal differs 360 °/N.
N number of pwm signal in N number of pwm signal in the fourth signal group, with the first signal group, phase difference
Differ 180 °/N.That is, for the 1st, the 2nd, the 3rd ... n-th pwm signal in the first signal group, and
The 1st in fourth signal group, the 2nd, the 3rd ... for n-th pwm signal, the 1st pwm signal in the first signal group
180 °/N is differed with the phase of the 1st pwm signal in fourth signal group, the 2nd pwm signal in the first signal group and the 4th letter
The phase of the 2nd pwm signal differs 180 °/N in number group, and so on, the n-th pwm signal and the 4th in the first signal group
The phase of n-th pwm signal differs 180 °/N in signal group.Also, the duty ratio of the frequency-doubled signal is 2D × N-1.
At this point, the control signal can also include：Second signal group and third signal group, the second signal group are used for
It is input to the control terminal of each switching tube in the second switch group, the third signal group is for being input to the third switch
The control terminal of each switching tube in group.The second signal group and the third signal group can be with no signals, or low electricity
It is flat.
Illustrate that the control signal makes the second switch group and the third switching group work below, described first opens
The 4th idle situation of switching tube group described in Guan Zuhe.
The control signal includes second signal group and third signal group, and the second signal group is for being input to described the
The control terminal of each switching tube in two switching groups, the third signal group is for being input to each switch in the third switching group
The control terminal of pipe.The second signal group includes the drive signal Vb1-Driver for the control terminal for being input to switching tube Vb1, and
It is input to the drive signal Vb2-Driver of the control terminal of switching tube Vb2, the third signal group includes being input to switching tube Vc1
Control terminal drive signal Vc1-Driver, and be input to the drive signal Vc2-Driver of the control terminal of switching tube Vc2.
Signal (i.e. frequency-doubled signal) NP_out of the signal of P points, the signal of N points and N points to P points is as shown in Figure 5.It can be with
Find out, the frequency-doubled signal PN_out in the frequency-doubled signal NP_out in Fig. 5 and Fig. 4 is complementary signal, the frequency-doubled signal in Fig. 5
The frequency of NP_out is 4 times of the frequency of any one drive signal, also, the duty ratio of frequency-doubled signal NP_out is 4D-1.
In the embodiment of the present invention, N is not only limited to 2, but can be the arbitrary integer more than or equal to 2, and at this time second
Signal group and third signal group need the relationship met to be：
The third signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively,The second signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively.Also
It is to say, for the 1st in third signal group (or second signal group), the 2nd, the 3rd ... for n-th pwm signal,
The phase of 1st pwm signal and the 2nd pwm signal differs 360 °/N, the phase phase of the 2nd pwm signal and the 3rd pwm signal
Poor 360 °/N, and so on, the phase of N-1 pwm signal and n-th pwm signal differs 360 °/N.
N number of pwm signal in N number of pwm signal in second signal group, with the third signal group, phase differ respectively
180°/N.That is, for the 1st, the 2nd, the 3rd ... n-th pwm signal and the secondth in third signal group
The 1st in signal group, the 2nd, the 3rd ... for n-th pwm signal, the 1st pwm signal and in third signal group
The phase of the 1st pwm signal differs 180 °/N, the 2nd pwm signal in third signal group and second signal group in binary signal group
In the phase of the 2nd pwm signal differ 180 °/N, and so on, the n-th pwm signal in third signal group and second signal
The phase of n-th pwm signal differs 180 °/N in group.Also, the duty ratio of the frequency-doubled signal is 2D × N-1.
At this point, the control signal further includes the first signal group and fourth signal group, the first signal group is for inputting
To the control terminal of each switching tube in the first switch group, the fourth signal group is for being input in the 4th switching group
The control terminal of each switching tube.The first signal group and the fourth signal group can be with no signals, or low level.
Optionally, the frequency multiplier circuit of the present embodiment can also include control circuit.The control circuit is for generating
The control signal, and each switching group into full-bridge topology shown in Fig. 2, that is, the first switch group, described
In two switching groups, the third switching group and the 4th switching group, the control terminal of each switching tube exports the control signal.
A kind of specific implementation of control circuit is provided below.
As shown in fig. 6, the control circuit may include：Comparison circuit, PID (proportional-integral-differential) control circuits and
Generative circuit.The comparison circuit, the difference signal for obtaining feedback signal and reference signal in closed system, by the difference
Value signal is exported to the PID control circuit；The PID control circuit, after the difference signal is carried out PID processing,
It is exported to the generative circuit as the reference signal, wherein pwm signal on the basis of the reference signal is general；The generation
Circuit, for generating the control signal according to the reference signal and the phase control signal that receives, and to shown in Fig. 2
In each switching group in full-bridge topology, the control terminal of each switching tube exports the control signal.
Wherein, the control circuit can be digital control circuit, to realize Digital Control, meet present generation power supplies and
The development trend of frequency multiplier circuit, integrated level is high, real time reaction speed is fast, controllability is strong.Such as PID control shown in fig. 6
Digital PID Controller may be used in circuit, is handled by self-adaptive PID, can carry out PID ginsengs more in real time according to load characteristic
Number is adjusted.Wherein, the feedback signal is input to the comparison circuit after analog-to-digital conversion.In addition, the control circuit
Can be analog circuit, corresponding circuit is related to triangle wave generating circuit, Phaseshift controlling circuit, pulse-width modulation circuit and PID
Control circuit etc..
The embodiment of the present invention additionally provides the control method of any embodiment to the frequency multiplier circuit, below specifically
It is bright.
Referring to Fig. 7, the present invention provides a kind of embodiment of the method for the control method of frequency multiplier circuit, the method is used for
In any embodiment of frequency multiplier circuit provided in an embodiment of the present invention, the method includes：
S701：Into the first switch group, the second switch group, the third switching group and the 4th switching group
The control terminal input control signal of each switching tube so that the first switch group and the 4th switching tube group work and institute
It states second switch group and the third switching group does not work, or so that the second switch group and the third switching group work
Make and the first switch group and the 4th switching tube group do not work.
Wherein, if the control signal makes first switch group and the 4th switching tube group work, the second switch
Group and the third switching group do not work.The control signal includes the first signal group and fourth signal group, first signal
Control terminal of the group for being input to each switching tube in the first switch group, the fourth signal group is for being input to described the
The control terminal of each switching tube in four switching groups.
The first signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively,The fourth signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively, described
N number of pwm signal in N number of pwm signal in fourth signal group, with the first signal group, phase differ 180 °/N respectively.
At this point, the control signal can also include：Second signal group and third signal group, the second signal group are used for
It is input to the control terminal of each switching tube in the second switch group, the third signal group is for being input to the third switch
The control terminal of each switching tube in group.The second signal group and the third signal group can be with no signals, or low electricity
It is flat.
Wherein, if the control signal makes the second switch group and the third switching group work, described first opens
4th switching tube group described in Guan Zuhe does not work；The control signal includes second signal group and third signal group, and described second
Signal group is used to be input to the control terminal of each switching tube in the second switch group, and the third signal group is for being input to institute
State the control terminal of each switching tube in third switching group.
The third signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively,The second signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively, described
N number of pwm signal in N number of pwm signal in second signal group, with the third signal group, phase differ 180 °/N respectively.
At this point, the control signal further includes the first signal group and fourth signal group, the first signal group is for inputting
To the control terminal of each switching tube in the first switch group, the fourth signal group is for being input in the 4th switching group
The control terminal of each switching tube.The first signal group and the fourth signal group can be with no signals, or low level.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the application
Portion or part steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, above example are only to illustrate the technical solution of the application, rather than its limitations；Although with reference to before
Embodiment is stated the application is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
Modification or replacement, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (5)
1. a kind of frequency multiplier circuit, which is characterized in that including：The first branch and the second branch in parallel；
From the first end of the first branch to second end, the first branch includes the first switch group and second being sequentially connected in series
Switching group；From the first end of the second branch to second end, the second branch include the third switching group that is sequentially connected in series and
4th switching group；It is respectively wrapped in the first switch group, the second switch group, the third switching group and the 4th switching group
Include the switching tube of N number of parallel connection, N >=2；
The first end of the first branch connects first voltage signal with the first end of the second branch, the first branch
Second end connects second voltage signal with the second end of the second branch, and the voltage value of the first voltage signal is more than described
The voltage value of second voltage signal；The first switch group, the second switch group, the third switching group and the described 4th are opened
The control terminal of each switching tube is for receiving control signal in the group of pass；
The connecting node and the third switching group of the first switch group and the second switch group and the 4th switch
The connecting node of group is the output end of the frequency multiplier circuit, and the output end is used to export the frequency-doubled signal of the control signal,
The frequency of the frequency-doubled signal is 2N times of the frequency of the control signal；
The control signal makes the first switch group and the 4th switching tube group work, the second switch group and described
Third switching group does not work；Or so that the second switch group and the third switching group work, the first switch group and
The 4th switching tube group does not work；
If the control signal makes first switch group and the 4th switching tube group work, the second switch group and described the
Three switching groups do not work；
The control signal includes the first signal group and fourth signal group, and the first signal group is opened for being input to described first
The control terminal of each switching tube in the group of pass, the fourth signal group is for being input to each switching tube in the 4th switching group
Control terminal；
The first signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively,
The fourth signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N, the fourth signal successively
N number of pwm signal in N number of pwm signal in group, with the first signal group, phase differ 180 °/N respectively；
If the control signal makes the second switch group and the third switching group work, the first switch group and described
4th switching tube group does not work；
The control signal includes second signal group and third signal group, and the second signal group is opened for being input to described second
The control terminal of each switching tube in the group of pass, the third signal group is for being input to each switching tube in the third switching group
Control terminal；
The third signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively,
The second signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N, the second signal successively
N number of pwm signal in N number of pwm signal in group, with the third signal group, phase differ 180 °/N respectively.
2. frequency multiplier circuit according to claim 1, which is characterized in that further include：
Control circuit, for generating the control signal, and to the first switch group, the second switch group, the third
The control terminal of each switching tube exports the control signal in switching group and the 4th switching group.
3. frequency multiplier circuit according to claim 2, which is characterized in that the control circuit includes：
Comparison circuit, the difference signal for obtaining feedback signal and reference signal in closed system are defeated by the difference signal
Go out to PID control circuit；
The PID control circuit exports electric to generating after the difference signal is carried out PID processing as reference signal
Road；
The generative circuit, for generating the control signal according to the reference signal and the phase control signal received,
And each switching tube into the first switch group, the second switch group, the third switching group and the 4th switching group
Control terminal export the control signal.
4. frequency multiplier circuit according to any one of claims 1 to 3, which is characterized in that the first switch group, described second
Each switching tube in switching group, the third switching group and the 4th switching group, is parallel with backward dioded.
5. a kind of control method of frequency multiplier circuit, which is characterized in that it is used in frequency multiplier circuit as described in claim 1, it is described
Method includes：
Each switch into the first switch group, the second switch group, the third switching group and the 4th switching group
The control terminal input control signal of pipe so that the first switch group and the 4th switching tube group work, the second switch
Group and the third switching group do not work；Or so that the second switch group and third switching group work, described first
Switching group and the 4th switching tube group do not work；
If the control signal makes first switch group and the 4th switching tube group work, the second switch group and described the
Three switching groups do not work；
The control signal includes the first signal group and fourth signal group, and the first signal group is opened for being input to described first
The control terminal of each switching tube in the group of pass, the fourth signal group is for being input to each switching tube in the 4th switching group
Control terminal；
The first signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively,
The fourth signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N, the fourth signal successively
N number of pwm signal in N number of pwm signal in group, with the first signal group, phase differ 180 °/N respectively；
If the control signal makes the second switch group and the third switching group work, the first switch group and described
4th switching tube group does not work；
The control signal includes second signal group and third signal group, and the second signal group is opened for being input to described second
The control terminal of each switching tube in the group of pass, the third signal group is for being input to each switching tube in the third switching group
Control terminal；
The third signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N successively,
The second signal group includes that N number of duty ratio is D, and phase differs the pwm signal of 360 °/N, the second signal successively
N number of pwm signal in N number of pwm signal in group, with the third signal group, phase differ 180 °/N respectively.
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| CN201511024771.5A CN105490531B (en) | 2015-12-30 | 2015-12-30 | A kind of frequency multiplier circuit and control method |
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| CN201511024771.5A CN105490531B (en) | 2015-12-30 | 2015-12-30 | A kind of frequency multiplier circuit and control method |
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| CN105490531B true CN105490531B (en) | 2018-08-03 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857134A (en) * | 2012-10-09 | 2013-01-02 | 中国科学院电工研究所 | High-frequency inverter power supply of wireless power transmission device and frequency doubling control method for inverter power supply |
| CN103715866A (en) * | 2013-12-30 | 2014-04-09 | 清华大学 | Component parallel type frequency multiplier circuit used for random waveform power electronic converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002199699A (en) * | 2000-12-22 | 2002-07-12 | Fuji Electric Co Ltd | Power conversion device and its driving method |
| KR100657860B1 (en) * | 2004-05-17 | 2006-12-14 | 삼성전자주식회사 | Amplifier and method of detecting an overcurrent thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857134A (en) * | 2012-10-09 | 2013-01-02 | 中国科学院电工研究所 | High-frequency inverter power supply of wireless power transmission device and frequency doubling control method for inverter power supply |
| CN103715866A (en) * | 2013-12-30 | 2014-04-09 | 清华大学 | Component parallel type frequency multiplier circuit used for random waveform power electronic converter |
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