CN106787712B - A kind of capacitive direct current transducer of premodulated based on capacitor array transformation - Google Patents
A kind of capacitive direct current transducer of premodulated based on capacitor array transformation Download PDFInfo
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- CN106787712B CN106787712B CN201611261656.4A CN201611261656A CN106787712B CN 106787712 B CN106787712 B CN 106787712B CN 201611261656 A CN201611261656 A CN 201611261656A CN 106787712 B CN106787712 B CN 106787712B
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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
- H02M3/156—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 with automatic control of output voltage or current, e.g. switching regulators
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from DC input or output
-
- 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
- H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention provides a kind of capacitive direct current transducer of premodulated based on capacitor array transformation, comprising: provides the bandgap reference cell of input voltage and reference voltage；For adjusting the adjustment pipe of conducting electric current；For output voltage to be adjusted to 1.5 times of charge pump unit of input voltage；For the reference voltage and the output voltage, and then generate the error amplifying unit of the control signal of the control adjustment pipe.The capacitive direct current transducer of premodulated based on capacitor array transformation of the invention will be adjusted so as to output voltage after 1.5 times of input voltage boosting by charge pump unit, can effectively reduce the ripple of output voltage, improve the working performance of direct current transducer.
Description
Technical field
The present invention relates to field of power management, capacitive straight more particularly to a kind of premodulated based on capacitor array transformation
Stream transformer.
Background technique
Switch capacitor converter and frequently referred to charge pump (Charge Pump).It is that power on lotus by capacitor periodic
Carry the transfer for realizing energy.Early in 1976, Dickson first proposed the concept of on piece charge pump, be subsequently applied to deposit
Memory circuit realizes boost function to read and write data.In subsequent decades, switching capacity DC-DC converter has very big
Development, realize function be not limited solely to realize boost function, may be implemented to be depressured using the transformation of topological structure,
Even inverter functionality.Switch capacitor converter is also less than 10mA on piece charge pump by load driving capability and is developed to driving capability
The charge pump realized more than capacitor outside 300mA piece.In recent years, wearable device, Internet of Things, the rise of VR have driven integrated electricity
The rapid development on road, people pursue miniaturization, the requirement of low-power consumption also force integrated circuit towards SOC (system on chip) direction not
Disconnected strides forward.For power management, the DC-DC converter of switching capacity type be exactly very beneficial for realizing it is fully integrated, especially
It is in the application of low-power consumption, and switching capacity DC-DC converter has already taken up clear superiority.
But the output voltage that many times, we want is not exactly the integer or score of input voltage
Times.Even if output input conversion is than being integer or score, since to also result in output voltage unstable for the variation of load.?
Just need the rectification (Regulation) of voltage this when.So-called rectification is exactly to draw a negative feedback loop from output end
To input control end, the change of input quantity is controlled in time according to the size of output voltage or load current, to reach steady
Determine output voltage or exports the purpose of electric current.
Existing several modulation systems are as described below:
1, pulse width modulation (PWM)
PWM modulation mode is
It is stabilized the output voltage by way of adjusting the pulse width of clock.This modulator approach is common in inductive type DC-DC and turns
In parallel operation.Its advantage is since the clock cycle is relatively more fixed, that is, has fixed switching frequency, available to make an uproar compared with low switch
Voice output voltage.The disadvantage is that output voltage is difficult to accomplish width due to being limited by switching power tube minimum turn-on time
The adjusting of range.
2, pulse frequency modulated (PFM)
PFM modulation system is by changing the frequency of clock come rectifier output voltage.When the output voltage is too high, clock closes
Disconnected, load capacitance electric discharge, output voltage reduces.When output voltage is too low, clock is opened, and power supply charges to load capacitance, defeated
Voltage increases out.It thus can be by output voltage control within the scope of a receiving.After output voltage scaled down
It is compared with reference voltage by comparator, obtains digital code, this digital code controls clock pulses, then using two-phase
Non-overlapping clock generation circuit, driving circuit controls power switch tube conducting and shutdown, to reach the mesh of rectifier output voltage
's.The advantages of PFM modulation system is, can be in very wide input voltage range internal modulation voltage, can also be in very wide load
Higher transfer efficiency is maintained in current range.In addition its feedback control loop is nearly all digital circuit, so response speed is very
Fastly.There are also the digital feedback loops of this nonlinear Control, do not have stability problem, because without carrying out loop compensation.
But PFM control also have the shortcomings that it is very big, most importantly, it be by changing the frequency of clock come rectifier output voltage,
The frequency spectrum of output voltage is very wide, and cannot predict, limits this modulation system in this way in noise-sensitive occasion
Using.
Grayscale generation circuit in AMOLED driving chip needs the 5V that powers, for the conventional electricity with 256 grayscale
For road, the voltage of every single order is about 20mV, therefore, when the ripple of input voltage is greater than 20mV or has larger noise,
It is easy to appear display deviation or noises for AMOLED display panel.It is known that relative to linear rectifier (LDO) and inductance
For the Switching Power Supply DC-DC converter of type, the output voltage ripple of switching capacity DC-DC converter is larger, if using normal
PFM modulator approach, output voltage ripple is generally in 30mV or more, and switching noise is unpredictable and eliminates.Thus pass
System switching capacity DC-DC converter is difficult to be applied in the occasion of noise-sensitive.
Therefore, how under the premise of not sacrificing transfer efficiency, output ripple is reduced to the maximum extent, and control
One of those skilled in the art's urgent problem to be solved is had become within 20mV.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of based on capacitor array transformation
The capacitive direct current transducer of premodulated, for solving the problems such as capacitive direct current transducer output ripple is big in the prior art.
In order to achieve the above objects and other related objects, the present invention provides a kind of premodulated electricity based on capacitor array transformation
Appearance type direct current transducer, the capacitive direct current transducer of premodulated based on capacitor array transformation include at least:
Bandgap reference cell, the first division module, adjustment pipe, charge pump unit, the second division module and error amplification
Unit；
The bandgap reference cell provides input voltage and reference voltage；
First division module be connected to the bandgap reference cell output end and the error amplifying unit it is defeated
Between outlet, the reference voltage is divided；
The source of the adjustment pipe connects the input voltage, drain terminal connects the charge pump unit, described in grid end connection
The output end of error amplifying unit for adjusting conducting electric current, and then adjusts output voltage；
The charge pump unit is connected to the drain terminal of the adjustment pipe, for output voltage to be adjusted to input voltage
1.5 again；
Second division module is connected to the output end of the charge pump unit, for dividing the output voltage
Pressure；
The first input end of the error amplifying unit connects described in the partial pressure of the reference voltage, the connection of the second input terminal
The partial pressure of output voltage is used for the reference voltage and the output voltage, and then generates the control of the control adjustment pipe
Signal processed.
Preferably, the charge pump unit includes: boost module and transmission module；
Wherein, the boost module includes first pair of pipe, second pair of pipe, first capacitor, the second capacitor, third capacitor, the
Four capacitor first switch, second switch, third switch, the 4th switch, the 5th switch and the 6th switch, it is described first pair pipe with
Second pair of pipe cross-coupling connection, the concatenated first capacitor of drain terminal connection of first pair of pipe, described first open
It closes and second capacitor, the bottom crown of second capacitor connects the first clock control signal, the second switch is connected to
Between the first capacitor and the top crown of second capacitor, third switch be connected to the first capacitor with it is described
Between the bottom crown of second capacitor, the first switch is controlled signal by the second clock and is controlled, the second switch and institute
Third switch is stated to be controlled by first clock control signal；The concatenated third electricity of the drain terminal connection of second pair of pipe
The bottom crown connection second clock of appearance, the 4th switch and the 4th capacitor, the 4th capacitor controls signal, described
5th switch is connected between the third capacitor and the top crown of the 4th capacitor, and the 6th switch is connected to described
Between third capacitor and the bottom crown of the 4th capacitor, the 4th switch is controlled by first clock control signal, institute
It states the 5th switch and the 6th switch and is controlled signal control by the second clock；The first capacitor and third electricity
The top crown of appearance is as output end.
It is highly preferred that the boost module further includes clock when being connected to first underlayer voltage at first pair of tube bottom end
Circuit processed and the second underlayer voltage clock control circuit for being connected to second pair of tube bottom end, when first underlayer voltage
Clock control circuit and the second underlayer voltage clock control circuit respectively include: upper trombone slide and lower trombone slide, the upper trombone slide with
The lower trombone slide is connected in series, and the source of the upper trombone slide connects input voltage, the source ground connection of the lower trombone slide, it is described on
Trombone slide is connected with the grid end of the lower trombone slide and connect control signal, the control of the first underlayer voltage clock control circuit
Signal is the first clock control signal, and the control signal of the second underlayer voltage clock control circuit is second clock control
Signal.
It is highly preferred that the transmission module includes the first transmitting switch and the second transmitting switch, first transmitting switch
It is connect with the second transmitting switch cross-coupling, the input terminal point of first transmitting switch and second transmitting switch
The first output end and second output terminal of the boost module are not connected, and first transmitting switch is opened with second transmission
The output end of pass is connected, the output end as the charge pump unit.
It is highly preferred that the transmission module includes: the first transmitting switch and the second transmitting switch, first transmitting switch
The first output end and second output terminal of the boost module are separately connected with the input terminal of second transmitting switch；It is described
First transmitting switch is connected with the output end of second transmitting switch, as output end；First transmitting switch with it is described
The grid end of second transmitting switch is separately connected the first grid voltage control circuit and the second grid voltage control circuit, is used for described first
The grid swing of transmitting switch and second transmitting switch increases to 1.5 times of input voltages.
It is highly preferred that first grid voltage control circuit and second grid voltage control circuit respectively include: the lower amplitude of oscillation passes
Defeated pipe and upper amplitude of oscillation transfer tube, the lower amplitude of oscillation transfer tube and the upper amplitude of oscillation transfer tube are connected in series, the lower amplitude of oscillation transmission
The source of pipe is grounded, the output end of the source connection transmitting switch of the upper amplitude of oscillation transfer tube, the grid of the lower amplitude of oscillation transfer tube
End connection clock control signal, the input terminal of the grid end connection transmitting switch of the upper amplitude of oscillation transfer tube.
It is highly preferred that the transmission module further includes the first substrate control pipe and the second substrate control pipe, first lining
The drain terminal of bottom control pipe connects the input terminal of first transmitting switch, source connects the bottom end of first transmitting switch, grid
End connects the input terminal of second transmitting switch；The drain terminal of the second substrate control pipe connects second transmitting switch
Input terminal, source connects the bottom end of second transmitting switch, grid end connects the input terminal of first transmitting switch.
As described above, the premodulated capacitive direct current transducer of the invention based on capacitor array transformation, has with following
Beneficial effect:
The capacitive direct current transducer of premodulated based on capacitor array transformation of the invention will be inputted by charge pump unit
It is adjusted so as to output voltage after 1.5 times of boost in voltage, the ripple of output voltage can be effectively reduced, improves direct current transducer
Working performance.
Detailed description of the invention
Fig. 1 is shown as the structural representation of the premodulated capacitive direct current transducer of the invention based on capacitor array transformation
Figure.
Fig. 2 is shown as a kind of structural schematic diagram of charge pump unit of the invention.
Fig. 3 is shown as another structural schematic diagram of charge pump unit of the invention.
Fig. 4~Fig. 5 is shown as the capacitor array topological structure schematic diagram of charge pump unit of the invention.
Fig. 6 is shown as the schematic illustration of charge pump unit of the invention.
Fig. 7 is shown as the output voltage wave of the premodulated capacitive direct current transducer of the invention based on capacitor array transformation
Shape schematic diagram.
Fig. 8 is shown as the negative-feedback compensation of the premodulated capacitive direct current transducer of the invention based on capacitor array transformation
Front and back error amplifier output waveform diagram.
Component label instructions
1 charge pump unit
11 boost modules
111 first underlayer voltage clock control circuits
112 second underlayer voltage clock control circuits
12 transmission modules
The voltage-controlled system electricity of 121 first grids
122 second grid voltage control circuits
2 bandgap reference cells
3 first division modules
4 second division modules
5 error amplifying units
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also be by addition different specific
Embodiment is embodied or practiced, and the various details in this specification can also not carried on the back based on different viewpoints and application
From carrying out various modifications or alterations under spirit of the invention.
Please refer to FIG. 1 to FIG. 8.It should be noted that diagram provided in the present embodiment only illustrates this in a schematic way
The basic conception of invention, only shown in schema then with related component in the present invention rather than package count when according to actual implementation
Mesh, shape and size are drawn, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its
Assembly layout kenel may also be increasingly complex.
Embodiment one
As shown in Figure 1, the present invention provides a kind of capacitive direct current transducer of premodulated based on capacitor array transformation, it is described
The capacitive direct current transducer of premodulated based on capacitor array transformation includes at least:
Bandgap reference cell 2, the first division module 3 adjust pipe Mp, charge pump unit 1, the second division module 4 and miss
Poor amplifying unit 5.
As shown in Figure 1, the bandgap reference cell 2 is that the capacitive direct current of premodulated based on capacitor array transformation turns
Parallel operation provides input voltage vin and reference voltage.
As shown in Figure 1, first division module 3 be connected to the bandgap reference cell 2 output end and the error
Between the output end of amplifying unit 5, the reference voltage is divided.
Specifically, as shown in Figure 1, in the present embodiment, first division module 3 include the first divider resistance Rc1 and
Second divider resistance Rc2, the first divider resistance Rc1 and the second divider resistance Rc2 is connected in series, and described first point
The other end of piezoresistance Rc1 connects the bandgap reference cell 2, and the other end of the second divider resistance Rc2 connects the mistake
Poor amplifying unit 5, the first divider resistance Rc1 and the second divider resistance Rc2 connecting place are as output end.
As shown in Figure 1, the source of the adjustment pipe Mp connects the input voltage vin, drain terminal connects the charge pump list
Member 1, grid end connect the output end of the error amplifying unit 5, for adjusting conducting electric current, and then adjust output voltage Vout.
Specifically, in the present embodiment, the adjustment pipe Mp is PMOS tube, when the grid voltage of the adjustment pipe Mp is high electricity
When pressure, the conducting electric current for flowing through the adjustment pipe Mp reduces；When the grid voltage of the adjustment pipe Mp is low-voltage, flow through described
The conducting electric current for adjusting pipe Mp increases.
As shown in Figure 1, the charge pump unit 1 is connected to the drain terminal of the adjustment pipe Mp, it is used for output voltage Vout
It is adjusted to 1.5 times of input voltage vin.
Specifically, as shown in Fig. 2, the charge pump unit 1 includes:
Boost module 11 and transmission module 12.
As shown in Fig. 2, the boost module 11 is connected to the input terminal of the transmission module 12, for input voltage
Vin boosts.
Specifically, as shown in Fig. 2, the boost module 11 includes first couple of pipe Mn1, second pair of pipe Mn2, first capacitor
C1, the second capacitor C2, third capacitor C3, the 4th capacitor C4, first switch K1, second switch K2, third switch K3, the 4th open
Close K4, the 5th switch K5, the 6th switch K6.
More specifically, first couple of pipe Mn1 is connect with second pair of pipe Mn2 cross-coupling, and in the present embodiment, institute
Stating first couple of pipe Mn1 and second couple of pipe Mn2 is NMOS tube, the drain terminal connection input voltage vin of first couple of pipe Mn1,
Source, the source that grid end connects second couple of pipe Mn2 connect the grid end of second couple of pipe Mn2；Second couple of pipe Mn2
Drain terminal connection input voltage vin, grid end connect the source of first couple of pipe Mn1, source connects first couple of pipe Mn1
Grid end.
More specifically, the top crown of the first capacitor C1 connects the source of first couple of pipe Mn1, bottom crown passes through institute
The top crown that the first open pipe K1 connects the second capacitor C2 is stated, when the bottom crown of the second capacitor C2 connects described first
Clock signal CLK1, the second switch K2 be connected to the first capacitor C1 and the second capacitor C2 top crown it
Between, the third switch K3 is connected between the first capacitor C1 and the bottom crown of the second capacitor C2, and described first opens
It closes K1 and is controlled signal CLK2 control by the second clock, the second switch K2 and the third switch K3 are by described first
Clock control signal CLK1 control, the top crown of the second capacitor C2 is as output end.The top crown of the third capacitor C3
Connect the source of second couple of pipe Mn2, bottom crown connects the upper pole of the 4th capacitor C4 by the 4th open pipe K4
Plate, the bottom crown of the 4th capacitor C4 connect the second clock and control signal CLK2, and the 5th switch K5 is connected to institute
It states between third capacitor C3 and the top crown of the 4th capacitor C4, the 6th switch K6 is connected to the third capacitor C3
Between the bottom crown of the 4th capacitor C4, the 4th switch K4 is controlled by the first clock control signal CLK1, institute
It states the 5th switch K5 and the 6th switch K6 and is controlled signal CLK2 control by the second clock, the 4th capacitor C4's
Top crown is as output end.
As shown in Fig. 2, the transmission module 12 is connected to the output end of the boost module 11, after exporting boosting
Voltage.
Specifically, as shown in Fig. 2, the transmission module 12 includes the first transmitting switch Mp1, the second transmitting switch Mp2.
The first transmitting switch Mp1 is connect with the second transmitting switch Mp2 cross-coupling, the first transmitting switch Mp1 and institute
The input terminal for stating the second transmitting switch Mp2 is separately connected the first output end and second output terminal of the boost module 11, described
First transmitting switch Mp1 is connected with the output end of the second transmitting switch Mp2, the output as the charge pump unit 1
End.
The output end connection output capacitance Cout and load LOAD of the transmission module 12.
As shown in Figure 1, second division module 4 is connected to the output end of the charge pump unit 1, for described defeated
Voltage Vout is divided out.
Specifically, as shown in Figure 1, in the present embodiment, second division module 4 include third divider resistance Rf1 and
4th divider resistance Rf2, the third divider resistance Rf1 and the 4th divider resistance Rf2 are connected in series, the third point
The other end of piezoresistance Rf1 connects the charge pump unit 1, the other end ground connection of the 4th divider resistance Rf2, and described the
Three divider resistance Rf1 and the 4th divider resistance Rf2 connecting place are as output end.
As shown in Figure 1, the first input end of the error amplifying unit 5 connects the partial pressure of the reference voltage, second defeated
Enter the partial pressure that end connects the output voltage, be used for the reference voltage and the output voltage, and then generates control institute
State the control signal of adjustment pipe Mp.
Specifically, as shown in Fig. 2, the output end of first division module 3 connects the reverse phase of the error amplifying unit 5
Input terminal, the output end of second division module 4 connect the normal phase input end of the error amplifying unit 5.When the output
It is described when voltage Vout is higher than the reference voltage (in the present embodiment, the reference voltage is set as rated output voltage)
5 output HIGH voltage of error amplifying unit, and then reduce conducting electric current；When the output voltage Vout is lower than the reference voltage
When, the error amplifying unit 5 exports low-voltage, and then increases conducting electric current.
Embodiment two
As shown in figure 3, the present embodiment provides a kind of capacitive direct current transducer of premodulated based on capacitor array transformation, institute
Structure and the embodiment one for stating the capacitive direct current transducer of premodulated based on capacitor array transformation are almost the same, difference
It is, the charge pump unit further includes the first underlayer voltage clock control circuit 111, the second underlayer voltage clock control electricity
Road 112, the first grid voltage control circuit 121, the second grid voltage control circuit 122, the first substrate control pipe Mp5 and the second substrate
Control pipe Mp6.
Specifically, as shown in figure 3, the first underlayer voltage clock control circuit 111 is connected to first couple of pipe Mn1
Bottom end, including the lower trombone slide Mn3 of trombone slide Mp3 and first on first, trombone slide Mp3 and the described first lower trombone slide on described first
Mn3 is connected in series, and in the present embodiment, trombone slide Mp3 is PMOS tube on described first, and the described first lower trombone slide Mn3 is NMOS
It manages, the source connection input voltage vin of trombone slide Mp3, drain terminal connect the drain terminal of the described first lower trombone slide Mn3 simultaneously on described first
The bottom end of first couple of pipe Mn1, the source ground connection of the described first lower trombone slide Mn3, first pull-up are connected as output end
Pipe Mp3 connects the first clock control signal CLK1 with the grid end of the described first lower trombone slide Mn3.The second voltage clock control
Circuit 112 is connected to the bottom end of second couple of pipe Mn2, including the lower trombone slide Mn4 of trombone slide Mp4 and second on second, and described second
Upper trombone slide Mp4 is connected in series with the described second lower trombone slide Mn4, and in the present embodiment, trombone slide Mp4 is PMOS tube on described second,
Described second lower trombone slide Mn4 is NMOS tube, and the source connection input voltage vin of trombone slide Mp4, drain terminal connect institute on described second
It states the drain terminal of the second lower trombone slide Mn4 and connects the bottom end of two couples of pipe Mn4 as output end, the described second lower trombone slide Mn4's
Source is grounded, and trombone slide Mp4 connects second clock control signal CLK2 with the grid end of the described second lower trombone slide Mn4 on described second.
Specifically, as shown in figure 3, the input terminal of the first transmitting switch Mp1 and the second transmitting switch Mp2 is distinguished
Connect the first output end and second output terminal of the boost module 11, the first transmitting switch Mp1 and second transmission
The output end of switch Mp2 is connected, as output end.In the present embodiment, the first transmitting switch Mp1 and described second is passed
Defeated switch Mp2 is PMOS tube, and source is as input terminal, and drain terminal is as output end.
Specifically, as shown in figure 3, first grid voltage control circuit 121 is connected to the grid of the first transmitting switch Mp1
End, first grid voltage control circuit 121 include: amplitude of oscillation transfer tube Mp7 series connection on the first lower amplitude of oscillation transfer tube Mn5 and first
It connects, amplitude of oscillation transfer tube Mp7 on the described first lower amplitude of oscillation transfer tube Mn5 and described first, in the present embodiment, described first
Lower amplitude of oscillation transfer tube Mn5 is NMOS tube, and amplitude of oscillation transfer tube Mp7 is PMOS tube, the described first lower amplitude of oscillation transfer tube on described first
The source ground connection of Mn5, drain terminal connect the drain terminal of amplitude of oscillation transfer tube Mp7 on described first and connect described first as output end
The grid end of transmitting switch Mp1, the source of amplitude of oscillation transfer tube Mp7 connects the output of the first transmitting switch Mp1 on described first
End, the grid end of the described first lower amplitude of oscillation transfer tube Mn5 connect the second clock and control signal CLK2, the amplitude of oscillation on described first
The grid end of transfer tube Mp7 connects the input terminal of the first transmitting switch Mp1.Second grid voltage control circuit 122 is connected to
The grid end of the second transmitting switch Mp2, second grid voltage control circuit 122 include: the second lower amplitude of oscillation transfer tube Mn6 and
Amplitude of oscillation transfer tube Mp8 is connected in series on second, amplitude of oscillation transfer tube on the described second lower amplitude of oscillation transfer tube Mn6 and described second
Mp8, in the present embodiment, the described second lower amplitude of oscillation transfer tube Mn6 is NMOS tube, and amplitude of oscillation transfer tube Mp8 is on described second
PMOS tube, the source ground connection of the described second lower amplitude of oscillation transfer tube Mn5, drain terminal connect the leakage of amplitude of oscillation transfer tube Mp8 on described second
The grid end of the second transmitting switch Mp2 is held and connects as output end, the source of amplitude of oscillation transfer tube Mp8 connects on described second
The output end of the second transmitting switch Mp2 is connect, the grid end of the described second lower amplitude of oscillation transfer tube Mn6 connects first clock
Signal CLK1 is controlled, the grid end of amplitude of oscillation transfer tube Mp8 connects the input terminal of the second transmitting switch Mp2 on described second.Institute
It states the first grid voltage control circuit 121 and second grid voltage control circuit 122 is used for the first transmitting switch Mp1 and institute
The grid swing for stating the second transmitting switch Mp2 increases to 1.5 times of input voltage vins.
Specifically, as shown in figure 3, in the present embodiment, the first substrate control pipe Mp5 is PMOS tube, described first
The drain terminal of substrate control pipe Mp5 connects the input terminal of the first transmitting switch Mp1, source connects first transmitting switch
Mp1 connects the input terminal of the second transmitting switch Mp2 with the bottom end of amplitude of oscillation transfer tube Mp7 on described first, grid end.At this
In embodiment, second substrate control pipe Mp6 is PMOS tube, the drain terminal connection of the second substrate control pipe Mp6 described the
The input terminal of two transmitting switch Mp2, source connect amplitude of oscillation transfer tube Mp8 on the second transmitting switch Mp2 and described second
Bottom end, grid end connect the input terminal of the first transmitting switch Mp1.
Specifically, as shown in figure 3, the first transmitting switch Mp1, the second transmitting switch Mp2, putting on described first
Width transfer tube Mp7, amplitude of oscillation transfer tube Mp8, first substrate control pipe Mp5 and second substrate control on described second
The substrate of pipe Mp6 connects capacitance to substrate CB。
The working principle of the capacitive direct current transducer of premodulated based on capacitor array transformation is as follows:
The bandgap reference cell 2 generates input voltage vin and reference voltage, and the reference voltage passes through described first point
Die block 3 inputs the inverting input terminal of the error amplifying unit 5 after dividing, the input voltage vin by adjusting pipe Mp into
Enter the charge pump unit 1, the charge pump unit 1 by input voltage boosting be 1.5 times after export, output voltage Vout is logical
It crosses after second division module 4 and inputs the normal phase input end of the error amplifying unit 5.As the output voltage Vout high
When the reference voltage (in the present embodiment, the reference voltage is set as rated output voltage), the error amplification is single
The conducting resistance of first 5 output HIGH voltages, the adjustment pipe Mp increases, and then reduces conducting electric current, finally reduces output voltage,
Make output voltage Vout stable in rated output voltage；When the output voltage Vout is lower than the reference voltage, the mistake
Poor amplifying unit 5 exports low-voltage, and the conducting resistance of the adjustment pipe Mp reduces, and then increases conducting electric current, finally increases defeated
Voltage out makes output voltage Vout stable in rated output voltage.
Further, since adjusting pipe Mp to keep lower drain-source pressure drop to improve transfer efficiency, therefore select bigger
Size increase the unstability of system to introduce biggish grid capacitance.Therefore, this structure uses voltage
The mode of feedback compensates system, the output resistance of error amplifier after compensation are as follows:
Wherein, γ0It is the original output resistance of error amplifier, A0For the gain of error amplifier, β is degeneration factor.
On the other hand, but gate capacitance introduce pole location about are as follows:
So being greatly reduced for the output resistance of the error amplifying unit 5 can compensate gate capacitance increase bring shadow
It rings, which is released except bandwidth.The present invention proposes to make direct current based on the cross-coupling charge pump construction that capacitor array changes
Converter first boosts to 1.5 times of Vin, i.e. 5.5V, so as to so that premodulated adjustment pipe drain-source pressure drop be maintained at 0.2V,
The problem of very good solution transfer efficiency.
Specifically, in the present embodiment, only by taking the charge pump unit 1 in embodiment two as an example, working principle is as follows:
Since there are bulk effects by MOSFET, when source serves as a contrast voltage VSBWhen increase, MOSFET width of depletion region increases, threshold value electricity
Pressure increases, expression are as follows:
Wherein, γ is body-effect coefficient.
So trombone slide Mp3 cut-off, described on described first when the first clock control signal CLK1 is high level
First lower trombone slide Mn3 conducting, the underlayer voltage of first couple of pipe Mn1 are pulled down to ground level, first couple of pipe Mn1's
Source serves as a contrast voltage VSBIncrease, threshold voltage VTHIncrease, at this time the gate source voltage V of first couple of pipe Mn1GSIt is described for low level
First pair of pipe Mn1 switch cut-off, simultaneously because threshold voltage VTHIncrease, is greatly reduced the subthreshold of first couple of pipe Mn1
It is worth conduction loss.
The first clock control signal CLK1 and the second clock control signal CLK2 be inverted signal, i.e., described second
Clock control signal CLK2 is low level, trombone slide Mp4 conducting on described second, the described second lower trombone slide Mn4 cut-off, described the
The underlayer voltage of two couples of pipe Mn2 is essentially pulled up to input voltage vin, and the source of second couple of pipe Mn2 serves as a contrast voltage VSBIt is reduced to negative electricity
Pressure, threshold voltage VTHReduce, at this time the gate source voltage V of second couple of pipe Mn2GSFor high level, second couple of pipe Mn2 is opened
It closes and opens, while low threshold voltage increases the conducting electric current of switching tube, reduces voltage loss when conducting.
By taking capacitor is transmitted on the left side as an example, as shown in figure 4, array is cascaded structure, and power supply is to electricity when CLK1 is low level
Capacity charge；As shown in figure 5, array is parallel-connection structure, capacitor electric discharge when CLK1 is high level.
The specific working mode of the boost module 11 is as shown in Figure 6:
Switching capacity forms two quadrants of charge and discharge, it is assumed that in first charging quadrant (a), the low electricity of the half period of clock
Flat, input voltage vin charges to concatenated first capacitor C1 and the second capacitor C2, and wherein first capacitor C1 is responsible in input electricity
Charge is carried between pressure and output voltage, and the second capacitor C2 is to maintain capacitor, is responsible for stable discharging voltage；Then in clock
Other half period (b), two capacitor parallel connections of first capacitor C1 and the second capacitor C2 and power supply disconnect powering load.
As shown in fig. 6, switched capacitor network is exactly in electric discharge end point at NT time point, it is present in two electricity at this time
Charge in appearance are as follows:
QC1 (NT)=C1 × Vout (NT)
QC2 (NT)=C2 × Vout (NT) (4)
In subsequent half period, input voltage vin gives two capacitor chargings, when NT+T/2 charging finishes, two
The quantity of electric charge on capacitor is expressed as follows:
QC1 (NT+T/2)=C1 × [Vin-Vout (NT+T/2)]
QC2 (NT+T/2)=C2 × Vout (NT+T/2) (5)
Had according to electric charge transfer and charge conservation theory:
QC2 (NT+T/2)-QC1 (NT+T/2)=QC2 (NT)-QC1 (NT) (6)
Simultaneous (4), (5), (6) equation:
At NT+T time point, electric discharge end charging first time point has just been returned to again.Total charge on two capacitors
Amount are as follows:
QTOTAL(NT+T)=QC2(NT+T/2)+QC1(NT+T/2) (7)
So output voltage can be expressed as follows at NT+T time point:
C1=C2 is taken in this circuit, and capacitor bottom crown is high level when discharge cycle, therefore output voltage are as follows:
Vout=0.5Vin+3.7=5.55 (V).
The specific working mode of the transmission module 12 is as follows:
When the first clock control signal CLK1 is high level, the second clock control signal CLK2 is low level
When, the first output end Vp1 of the boost module 11 is low level (Vin), second output terminal Vp2 is high level (1.5Vin),
Described first lower amplitude of oscillation transfer tube Mn5 ends, amplitude of oscillation transfer tube Mp7 conducting on described first, then first transmitting switch
Mp1 cut-off；Described second lower amplitude of oscillation transfer tube Mn6 is connected, and amplitude of oscillation transfer tube Mp8 cut-off on described second then described second passes
Defeated switch Mp2 conducting, the 1.5Vin of the second output terminal of the boost module 11 is exported, while second substrate controls
Pipe Mp6 conducting, makes the underlayer voltage of the second transmitting switch Mp2 be pulled high to Vp2, i.e. 1.5Vin, effectively prevents because of leakage
It holds voltage to increase and generates latch-up.
When the first clock control signal CLK1 is low level, the second clock control signal CLK2 is high level
When, working principle is similar, will not repeat them here.
Circuit of the present invention adjusts the drain terminal voltage of pipe Mp close to 3.7V, premodulated in charge phase, capacitor array top crown
Also just close to 3.7V, so that its drain-source pressure drop is maintained within 0.2V, it is greatly reduced drain-source pressure drop bring efficiency
The advantages of losing, while also having played premodulated technique, by output voltage ripple control within 1mV.Simulation waveform such as Fig. 7
It is shown.In addition, the present invention successfully solves traditional premodulated circuit and is only amplified with single error by voltage negative-feedback
The loop that device generates shakes problem, and simulation waveform is as shown in Figure 8.
The capacitive direct current transducer of premodulated based on capacitor array transformation of the invention will be inputted by charge pump unit
It is adjusted so as to output voltage after 1.5 times of boost in voltage, the ripple of output voltage can be effectively reduced, improves direct current transducer
Working performance.Charge pump unit of the invention simultaneously realizes the grid voltage for increasing PMOS transmitting switch by grid voltage control circuit
The function of the amplitude of oscillation, the grid voltage control circuit only use 2 MOSFET to constitute, occupy smaller chip area；By to PMOS
Latch-up is eliminated in the control of transmitting switch substrate；Increase the control of underlayer voltage clock control circuit simultaneously to the substrate electricity of pipe
Pressure reduces dual loss when subthreshold value and conducting；In addition, charge pump unit structure of the invention is simple, signal stabilization,
And circuit topology high degree of symmetry, the influence of the non-ideal factors bring such as circuit mismatch is effectively reduced, there is good robust
Property.
In conclusion the present invention provides a kind of capacitive direct current transducer of premodulated based on capacitor array transformation, comprising:
Bandgap reference cell, the first division module, adjustment pipe, charge pump unit, the second division module and error amplifying unit；Institute
It states bandgap reference cell and input voltage and reference voltage is provided；First division module is connected to the bandgap reference cell
Output end and the error amplifying unit output end between, the reference voltage is divided；The source of the adjustment pipe
End connects the input voltage, drain terminal connects the charge pump unit, grid end connects the output end of the error amplifying unit,
For adjusting conducting electric current, and then adjust output voltage；The charge pump unit is connected to the drain terminal of the adjustment pipe, is used for
Output voltage is adjusted to 1.5 times of input voltage；Second division module is connected to the output of the charge pump unit
End, for being divided to the output voltage；The first input end of the error amplifying unit connects the reference voltage
Partial pressure, the second input terminal connect the partial pressure of the output voltage, are used for the reference voltage and the output voltage, into
And generate the control signal of the control adjustment pipe.The capacitive direct current of premodulated based on capacitor array transformation of the invention turns
Parallel operation will be adjusted so as to output voltage after 1.5 times of input voltage boosting by charge pump unit, can effectively reduce output electricity
The ripple of pressure improves the working performance of direct current transducer.So the present invention effectively overcomes various shortcoming in the prior art
And has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, those of ordinary skill in the art institute without departing from the spirit and technical ideas disclosed in the present invention such as
All equivalent modifications or change completed, should be covered by the claims of the present invention.
Claims (7)
1. a kind of capacitive direct current transducer of premodulated based on capacitor array transformation, which is characterized in that described to be based on capacitor battle array
The capacitive direct current transducer of the premodulated of rank transformation includes at least:
Bandgap reference cell, the first division module, adjustment pipe, charge pump unit, the second division module and error amplifying unit；
The bandgap reference cell provides input voltage and reference voltage；
First division module is connected to the output end of the bandgap reference cell and the output end of the error amplifying unit
Between, the reference voltage is divided；
The source of the adjustment pipe connects the input voltage, drain terminal connects the charge pump unit, grid end connects the error
The output end of amplifying unit for adjusting conducting electric current, and then adjusts output voltage；
The charge pump unit is connected to the drain terminal of the adjustment pipe, for output voltage to be adjusted to 1.5 times of input voltage；
Second division module is connected to the output end of the charge pump unit, for dividing to the output voltage；
The first input end of the error amplifying unit connects the partial pressure of the reference voltage, the second input terminal connects the output
The partial pressure of voltage is used for the reference voltage and the output voltage, and then generates the control letter of the control adjustment pipe
Number.
2. the premodulated capacitive direct current transducer according to claim 1 based on capacitor array transformation, it is characterised in that:
The charge pump unit includes: boost module and transmission module；
Wherein, the boost module includes first pair of pipe, second pair of pipe, first capacitor, the second capacitor, third capacitor, the 4th electricity
Appearance, first switch, second switch, third switch, the 4th switch, the 5th switch and the 6th switch, it is described first pair pipe with it is described
The connection of second pair of pipe cross-coupling, the drain terminal of first pair of pipe connect the concatenated first capacitor, the first switch and
Second capacitor, the bottom crown of second capacitor connect the first clock control signal, and the second switch is connected to described
Between the top crown of first capacitor and the top crown of second capacitor, the third switch is connected under the first capacitor
Between pole plate and the bottom crown of second capacitor, the first switch is controlled signal by second clock and is controlled, and described second opens
It closes and third switch is controlled by first clock control signal；The drain terminal connection concatenated described the of second pair of pipe
The bottom crown connection second clock of three capacitors, the 4th switch and the 4th capacitor, the 4th capacitor controls signal, institute
It states the 5th switch to be connected between the top crown of the third capacitor and the top crown of the 4th capacitor, the 6th switch connects
It is connected between the bottom crown of the third capacitor and the bottom crown of the 4th capacitor, the 4th switch is by first clock
Signal control is controlled, the 5th switch and the 6th switch are controlled signal by the second clock and controlled；First electricity
The top crown of the top crown of appearance and the third capacitor is respectively as the first and second output ends.
3. the premodulated capacitive direct current transducer according to claim 2 based on capacitor array transformation, it is characterised in that:
The boost module further includes being connected to the first underlayer voltage clock control circuit at first pair of tube bottom end and being connected to institute
State the second underlayer voltage clock control circuit at second pair of tube bottom end, the first underlayer voltage clock control circuit and described
Two underlayer voltage clock control circuits respectively include: upper trombone slide and lower trombone slide, the upper trombone slide and the lower trombone slide are connected in series,
The source of the upper trombone slide connects input voltage, the source ground connection of the lower trombone slide, the grid of the upper trombone slide and the lower trombone slide
End is connected and connects control signal, and the control signal of the first underlayer voltage clock control circuit is the first clock control letter
Number, the control signal of the second underlayer voltage clock control circuit is that second clock controls signal.
4. the premodulated capacitive direct current transducer according to claim 2 based on capacitor array transformation, it is characterised in that:
The transmission module includes the first transmitting switch and the second transmitting switch, first transmitting switch and second transmitting switch
The input terminal of cross-coupling connection, first transmitting switch and second transmitting switch is separately connected the boost module
First output end and second output terminal, first transmitting switch is connected with the output end of second transmitting switch, as institute
State the output end of charge pump unit.
5. the premodulated capacitive direct current transducer according to claim 2 based on capacitor array transformation, it is characterised in that:
The transmission module includes: the first transmitting switch and the second transmitting switch, and first transmitting switch is opened with second transmission
The input terminal of pass is separately connected the first output end and second output terminal of the boost module；First transmitting switch with it is described
The output end of second transmitting switch is connected, as output end；The grid end of first transmitting switch and second transmitting switch
It is separately connected the first grid voltage control circuit and the second grid voltage control circuit, for passing first transmitting switch and described second
The grid swing of defeated switch increases to 1.5 times of input voltages.
6. the premodulated capacitive direct current transducer according to claim 5 based on capacitor array transformation, it is characterised in that:
First grid voltage control circuit and second grid voltage control circuit respectively include: lower amplitude of oscillation transfer tube and the transmission of the upper amplitude of oscillation
Pipe, the lower amplitude of oscillation transfer tube and the upper amplitude of oscillation transfer tube are connected in series, the source ground connection of the lower amplitude of oscillation transfer tube, described
The output end of the source connection transmitting switch of upper amplitude of oscillation transfer tube, the grid end connection clock control letter of the lower amplitude of oscillation transfer tube
Number, the input terminal of the grid end connection transmitting switch of the upper amplitude of oscillation transfer tube.
7. the premodulated capacitive direct current transducer according to claim 5 or 6 based on capacitor array transformation, feature exist
In: the transmission module further includes the first substrate control pipe and the second substrate control pipe, the drain terminal of the first substrate control pipe
Connect the input terminal of first transmitting switch, source connects the bottom end of first transmitting switch, grid end connection described second
The input terminal of transmitting switch；The drain terminal of the second substrate control pipe connects the input terminal of second transmitting switch, source connects
Connect the bottom end of second transmitting switch, grid end connects the input terminal of first transmitting switch.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6147888A (en) * | 1998-04-30 | 2000-11-14 | Stmicroelectronics S.R.L. | Voltage converting circuit |
| JP2005278295A (en) * | 2004-03-24 | 2005-10-06 | Sanyo Electric Co Ltd | Step-up circuit |
| CN101297458A (en) * | 2005-10-19 | 2008-10-29 | 有限公司技术管理 | Electric power storage device using capacitor and control method thereof |
| CN101304212A (en) * | 2007-05-11 | 2008-11-12 | 联咏科技股份有限公司 | Voltage conversion device capable of improving voltage conversion efficiency |
| CN101950993A (en) * | 2010-08-19 | 2011-01-19 | 美凌微电子(上海)有限公司 | Lithium battery charger and DC voltage-stabilizing power supply integrated circuit system |
| CN102201733A (en) * | 2010-03-25 | 2011-09-28 | 昆山锐芯微电子有限公司 | Charge pump circuit |
| CN103427632A (en) * | 2013-07-21 | 2013-12-04 | 马东林 | Tolerance charge pump |
| CN203368874U (en) * | 2013-08-20 | 2013-12-25 | 翁巧慧 | LED lighting energy-saving circuit |
| CN106026637A (en) * | 2016-07-06 | 2016-10-12 | 西安紫光国芯半导体有限公司 | Charge pump circuit and its single-stage circuits |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI114758B (en) * | 2002-10-25 | 2004-12-15 | Nokia Oyj | voltage multiplier |
| US9634559B2 (en) * | 2014-02-07 | 2017-04-25 | The Hong Kong University Of Science And Technology | Charge pumping apparatus for low voltage and high efficiency operation |
-
2016
- 2016-12-30 CN CN201611261656.4A patent/CN106787712B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6147888A (en) * | 1998-04-30 | 2000-11-14 | Stmicroelectronics S.R.L. | Voltage converting circuit |
| JP2005278295A (en) * | 2004-03-24 | 2005-10-06 | Sanyo Electric Co Ltd | Step-up circuit |
| CN101297458A (en) * | 2005-10-19 | 2008-10-29 | 有限公司技术管理 | Electric power storage device using capacitor and control method thereof |
| CN101304212A (en) * | 2007-05-11 | 2008-11-12 | 联咏科技股份有限公司 | Voltage conversion device capable of improving voltage conversion efficiency |
| CN102201733A (en) * | 2010-03-25 | 2011-09-28 | 昆山锐芯微电子有限公司 | Charge pump circuit |
| CN101950993A (en) * | 2010-08-19 | 2011-01-19 | 美凌微电子(上海)有限公司 | Lithium battery charger and DC voltage-stabilizing power supply integrated circuit system |
| CN103427632A (en) * | 2013-07-21 | 2013-12-04 | 马东林 | Tolerance charge pump |
| CN203368874U (en) * | 2013-08-20 | 2013-12-25 | 翁巧慧 | LED lighting energy-saving circuit |
| CN106026637A (en) * | 2016-07-06 | 2016-10-12 | 西安紫光国芯半导体有限公司 | Charge pump circuit and its single-stage circuits |
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