CN106560988A - DC-DC converter with disturbance - Google Patents
DC-DC converter with disturbance Download PDFInfo
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- CN106560988A CN106560988A CN201611094563.7A CN201611094563A CN106560988A CN 106560988 A CN106560988 A CN 106560988A CN 201611094563 A CN201611094563 A CN 201611094563A CN 106560988 A CN106560988 A CN 106560988A
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- 238000005070 sampling Methods 0.000 claims abstract description 34
- 230000005611 electricity Effects 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 17
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- 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
- H02M3/158—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 including plural semiconductor devices as final control devices for a single load
- H02M3/1584—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 including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a DC-DC converter with disturbance, and the converter comprises a voltage input end, a voltage output end, a first sampling circuit, a second sampling circuit, a third sampling circuit, a first DC-DC conversion circuit, a second DC-DC conversion circuit, and a control circuit. The second sampling circuit is in series connection with the first DC-DC conversion circuit, thereby forming a first sampling DC conversion circuit. The third sampling circuit is in series connection with the second DC-DC conversion circuit, thereby forming a second sampling DC conversion circuit. The voltage input end, the first sampling circuit and the first sampling DC conversion circuit are sequentially connected with a parallel circuit and a voltage output end of the second sampling DC conversion circuit in a series manner. The control circuit comprises a first input end, a second input end, a third input end, a second output end and a second output end. The objective of the invention lies in providing the DC-DC converter with disturbance, and the impedance of an input end is known through the disturbance, so as to improve the endurance of a power supply.
Description
Technical field
The present invention relates to a kind of circuit, more particularly, it relates to a kind of dc-dc with disturbance.
Background technology
DC-DC is referred to and the electric energy of a magnitude of voltage is changed into into the electrical energy devices of another magnitude of voltage in DC circuit.Its
In being widely used in the technical fields such as power electronics, automotive electronics, military project, industrial control equipment, communication apparatus.Due to common DC-
DC inputs are not a preferable power supplys, and it carries certain impedance.On the one hand, with input terminal voltage continuous loss and
Change, resistive, the perceptual and capacitive of sending-end impedance is also being continually changing.On the other hand, the power supply dynamic of part input is rung
Should be slow, it is impossible to adapt to or meet dynamic applying working condition demand, so as to cause power output in the frequent variable load of output end
Fluctuation, ultimately causing the durability of input power supply reduces, such as vehicle fuel battery etc..Some dc-dcs are carried out
Certain restriction, some increased pre-charging functions or accumulator, although can improve durability, but it can not be from basic
The change of upper detection input power supply.
The sampling circuit samples precision that simple DC-DC all the way is adopted due to meet the requirement of output end, so difficult
Cannot accurately or at all detect the change of power end.So existing DC-DC typically cannot be detected directly or indirectly
Or the impedance of calculating power end.
The content of the invention
For problems of the prior art：DC-DC typically cannot directly or indirectly detect or calculate power end
Impedance, it is an object of the invention to provide it is a kind of with disturbance dc-dc.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of DC-to-dc converter with disturbance, including voltage input end, voltage output end, the first sample circuit, the
Two sample circuits, the 3rd sample circuit, the first DC-to-dc change-over circuit, the second DC-to-dc change-over circuit, control circuit.
Second sample circuit is connected with the first DC-to-dc change-over circuit, forms the first sampling DC converting circuit；3rd sample circuit
Connect with the second DC-to-dc change-over circuit, form the second sampling DC converting circuit；Voltage input end, the first sample circuit,
First sampling DC converting circuit is sequentially connected in series with the second the sample parallel circuit of DC converting circuit, voltage output end；Control
Circuit includes first input end, the second input, the 3rd input, the first output end, the second output end；First input end connects
First sample circuit, the second input connects the second sample circuit, and the 3rd input connects the 3rd sample circuit, the first output end
Connect the first DC-to-dc change-over circuit, the second output end connects the second DC-to-dc change-over circuit.
An embodiment of the invention, the first sample circuit, the second sample circuit, the 3rd sample circuit are current Hall
Sensor.
Further, the first DC-to-dc change-over circuit includes the first inductance, the first electric capacity, the second electric capacity, the one or two pole
Pipe, the first insulated gate enhancement mode FET.First inductance and the first Diode series, and the first inductance connection second samples electricity
Road, the first diode connection voltage output end；One end of first electric capacity links to the leading portion of the first inductance, other end ground connection, the
One end of two electric capacity connects the rear end of the first diode, other end ground connection；The grid of the first insulated gate enhancement mode FET connects
First output end of connection control circuit, drain electrode is connected to the rear end of the first inductance, source ground.
Further, the second DC-to-dc change-over circuit includes the second inductance, the 3rd electric capacity, the 4th electric capacity, the two or two pole
Pipe, the second insulated gate enhancement mode FET.Second inductance and the second Diode series, and the sampling electricity of the second inductance connection the 3rd
Road, the second diode connection voltage output end；One end of 3rd electric capacity links to the leading portion of the second inductance, other end ground connection, the
One end of four electric capacity connects the rear end of the second diode, other end ground connection；The grid of the second insulated gate enhancement mode FET connects
Second output end of connection control circuit, drain electrode is connected to the rear end of the second inductance, source ground.
An embodiment of the invention, the first sample circuit, the second sample circuit, the 3rd sample circuit are voltage Hall
Sensor.
Further, the first DC-to-dc change-over circuit includes the first inductance, the first electric capacity, the second electric capacity, the one or two pole
Pipe, the first insulated gate enhancement mode FET.First insulated gate enhancement mode FET and the first Diode series, and the one or two
Pole pipe connection voltage output end, the drain electrode of the first insulated gate enhancement mode FET connect the second sample circuit, grid connection control
First output end of circuit processed, source electrode connects the first diode；One end of first electric capacity connects the second sample circuit, another termination
Ground；One end connection voltage output end of the second electric capacity, other end ground connection；One end of first inductance connects the first insulated gate enhancement mode
The source electrode of FET, other end ground connection.
Further, the second DC-to-dc change-over circuit includes the second inductance, the 3rd electric capacity, the 4th electric capacity, the two or two pole
Pipe, the second insulated gate enhancement mode FET.Second insulated gate enhancement mode FET and the second Diode series, and the two or two
Pole pipe connection voltage output end, the source electrode of the second insulated gate enhancement mode FET connect the 3rd sample circuit, grid connection control
Second output end of circuit processed, drain electrode the second diode of connection；One end of 3rd electric capacity connects the 3rd sample circuit, another termination
Ground；One end connection voltage output end of the 4th electric capacity, other end ground connection；One end of second inductance connects the second insulated gate enhancement mode
The drain electrode of FET, other end ground connection.
An embodiment of the invention, the first sample circuit includes first voltage Hall element and the first current Hall
Sensor, the second sample circuit include second voltage Hall element and the second current Hall sensor, the 3rd sample circuit bag
Include tertiary voltage Hall element and the 3rd current Hall sensor.Wherein, first current Hall sensor one end connection voltage
Input, other end connection first voltage Hall element；First voltage Hall element one end connects the first current Hall and passes
Sensor, other end ground connection；Second current Hall sensor one end connects the first current Hall sensor, and other end connection second is electric
Pressure Hall element；Second voltage Hall element one end connects the second current Hall sensor, other end ground connection；3rd electric current
Hall element one end connects the first current Hall sensor, other end connection tertiary voltage Hall element；Tertiary voltage is suddenly
Your sensor one end connects the 3rd current Hall sensor, other end ground connection.
Further, the first DC-to-dc change-over circuit includes the first inductance, the first electric capacity, the second electric capacity, the one or two pole
Pipe, the first insulated gate enhancement mode FET.First inductance and the first Diode series, and first the second electric current of inductance connection is suddenly
That sensor, the first diode connection voltage output end；One end of first electric capacity links to the leading portion of the first inductance, another termination
Ground, one end of the second electric capacity connects the rear end of the first diode, other end ground connection；The grid of the first insulated gate enhancement mode FET
Pole connects the first output end of control circuit, and drain electrode is connected to the rear end of the first inductance, source ground.
Further, the second DC-to-dc change-over circuit includes the second inductance, the 3rd electric capacity, the 4th electric capacity, the two or two pole
Pipe, the second insulated gate enhancement mode FET.Second inductance and the second Diode series, and the electric current of the second inductance connection the 3rd is suddenly
That sensor, the second diode connection voltage output end；One end of 3rd electric capacity links to the leading portion of the second inductance, another termination
Ground, one end of the 4th electric capacity connects the rear end of the second diode, other end ground connection；The grid of the second insulated gate enhancement mode FET
Pole connects the second output end of control circuit, and drain electrode is connected to the rear end of the second inductance, source ground.
In above-mentioned technical proposal, present invention DC-DC circuit in parallel is controlled, by powerful all the way
DC-DC meets the powerful requirement of output end, and by high accuracy DC-DC circuit in parallel all the way disturbance is increased, defeated so as to pass through
The waveform for going out current perturbation or voltage is calculated with the waveform of feedback current or voltage, and detection input power supply dynamic response is total
The change of impedance, so as to improve the durability of input power.
Description of the drawings
Fig. 1 is the circuit diagram of dc-dc of the present invention with disturbance；
Fig. 2 is the circuit diagram of first embodiment of the invention；
Fig. 3 is the input current I of invention first embodiment2Oscillogram；
Fig. 4 is the input current I of invention first embodiment3Oscillogram；
Fig. 5 is the current waveform figure that the current collection circuit of invention first embodiment is gathered；
Fig. 6 is the circuit diagram of second embodiment of the invention；
Fig. 7 is the input voltage V of second embodiment of the invention2Oscillogram；
Fig. 8 is the input voltage V of second embodiment of the invention3Oscillogram；
Fig. 9 is the voltage oscillogram that the voltage collection circuit of invention second embodiment is gathered；
Figure 10 is the circuit diagram of third embodiment of the invention；
Figure 11 is the input current I of invention 3rd embodiment2Oscillogram；
Figure 12 is the input current I of invention 3rd embodiment3Oscillogram；
Figure 13 is the current waveform figure that the current collection circuit of invention 3rd embodiment is gathered.
Specific embodiment
Technical scheme is further illustrated with reference to the accompanying drawings and examples.
With reference to Fig. 1, circuit sampling circuit based on circuit input end of the present invention, then connect two-way sample circuit in parallel and
DC-DC circuit, the current sampling signal of three sample circuits feeds back to control circuit, and control circuit output PWM ripple enters to DC-DC
Row Switching Power Supply is controlled.It is an object of the invention to provide a kind of dc-dc with disturbance, by disturbance input is understood
Impedance improving the durability of input power.
, mainly with two-way dc-dc Parallel opertation, all the way dc-dc is mainly high-power to control for the present invention
Based on DC-DC conversions.Another road dc-dc is mainly based on control disturbance waveform.Meet following mesh so as to reach
's：Can be calculated by sample circuit A and control signal power work state, can be big with controlled output by sample circuit B
The working condition of power dc-dc, so as to meet DC-DC output end purposes；Can be disturbed with controlled output by sample circuit C
The working condition of dynamic dc-dc.
Specifically, as shown in figure 1, the circuit of the present invention includes：Voltage input end, voltage output end, the first sampling electricity
Road (sample circuit A), the second sample circuit (sample circuit B), the 3rd sample circuit (sample circuit C), the first DC-to-dc turn
Change circuit, the second DC-to-dc change-over circuit, control circuit.
Second sample circuit is connected with the first DC-to-dc change-over circuit, forms the first sampling DC converting circuit.3rd
Sample circuit is connected with the second DC-to-dc change-over circuit, forms the second sampling DC converting circuit.Voltage input end, first
Parallel circuit, the voltage output end of sample circuit, the first sampling DC converting circuit and the second sampling DC converting circuit is successively
Series connection.
The sampling rank of sample circuit A and sample circuit B should meet the requirement of the high-power electric current of input and output side；Sampling
The sampling precision of circuit C should be higher than that sample circuit A and B, so as to reach the requirement of high-precision control current sample.Sample circuit A,
Sample circuit B and sample circuit C are the measuring circuit with voltage and/or current sensor.
Control electricity of the control circuit based on the chips such as single-chip microcomputer, DSP with AD samplings and PWM waveform output function
Road, it mainly includes first input end AD1, the second input AD2, the 3rd input AD3, the first output end PWM1, second defeated
Go out to hold PWM2.First input end AD1 connects the first sample circuit (sample circuit A), the second input AD2 connections the second sampling electricity
Road (sample circuit B), the 3rd input AD3 connects the 3rd sample circuit (sample circuit C), the first output end PWM1 connection first
DC-to-dc change-over circuit, the second output end PWM2 connects the second DC-to-dc change-over circuit.
Input power supply (is all the way sampling electricity through the DC-DC change-over circuits of sample circuit A, two-way band sampling in parallel
Road B and first via DC-DC change-over circuit, another road is sample circuit C and the second road DC-DC change-over circuits) provide negative to outside
Carry voltage and current.
In the present invention, it is the curtage that meets detection input and output end, sample circuit A and sample circuit B
Sample range and precision should meet the requirement of output voltage and electric current.The sample range and precision of sample circuit C should be than sampling
Circuit A and sample circuit B is high, and it is used to detect current perturbation or voltage status, for detection input power supply dynamic response
The change of total impedance, so as to improve the durability of input power.
Technical scheme is further illustrated below by embodiment.
Embodiment 1
In the present embodiment, the first sample circuit 101, the second sample circuit 102, the 3rd sample circuit 103 be electric current suddenly
That sensor.
First DC-to-dc change-over circuit 104 includes the first inductance L1, the first electric capacity C1, the second electric capacity C2, the one or two pole
Pipe D1, the first insulated gate enhancement mode FET Q1.
First inductance L1 connects with the first diode D1, and the first inductance L1 connects the second sample circuit 102, the one or two pole
Pipe D1 connects voltage output end；One end of first electric capacity C1 links to the leading portion of the first inductance L1, other end ground connection, the second electric capacity
One end of C2 connects the rear end of the first diode D1, other end ground connection；The grid of the first insulated gate enhancement mode FET Q1 connects
First output end of connection control circuit, drain electrode is connected to the rear end of the first inductance L1, source ground.
Second DC-to-dc change-over circuit 105 includes the second inductance L2, the 3rd electric capacity C3, the 4th electric capacity C4, the two or two pole
Pipe D2, the second insulated gate enhancement mode FET Q2.Second inductance L2 connects with the second diode D2, and the second inductance L2 connects
3rd sample circuit 103, the second diode D2 connection voltage output ends；One end of 3rd electric capacity C3 links to the second inductance L2's
Leading portion, other end ground connection, one end of the 4th electric capacity C4 connects the rear end of the second diode D2, other end ground connection；Second insulated gate
The grid of enhancement mode FET Q2 connects the second output end of control circuit, and drain electrode is connected to the rear end of the second inductance L2, source
Pole is grounded.
As shown in Fig. 2 the voltage increase and current constant type dc-dc of the present embodiment, its reference constant current is in 0～80A, including electric current
Hall element 101 (selecting 0～100A models), current Hall sensor 102 (selecting 0～5A models), current Hall sensing
Device 103 (selecting 0～100A models), DC-DC voltage up converting circuit 104, DC-DC voltage up converting circuit 105 and control circuit 106
(XC886 chips being selected, using three AD inputs and two phase PWM output).
Wherein, current Hall sensor 102 is connected with DC-DC change-over circuits 104, current Hall sensor 103 and DC-DC
Change-over circuit 105 is connected；After the above two circuit in parallel, after being connected on current Hall sensor 101.Current Hall sensor
101st, the current signal that current Hall sensor 102 and current Hall sensor 103 are gathered is transferred to control by holding wire
Circuit 106, after collection, signal transacting, output control waveform is respectively to DC-DC change-over circuits 104 and DC-DC for control circuit
Change-over circuit 105 so that the output voltage and electric current of DC-DC change-over circuits 104 meets the voltage and current after DC-DC conversions will
Ask, input current I2Ideal waveform figure is shown in Fig. 3 so that DC-DC change-over circuits 105 go out voltage and current and meet DC-DC turn
Voltage and current requirement after changing, input current I3Ideal waveform figure is shown in Fig. 4 so that current collection circuit 101 is gathered
Electric current ideal waveform be Fig. 5 shown in.
Specifically, supply voltage VinThrough current Hall sensor 101 and the two-way sample circuit and DC-DC conversion of parallel connection
After circuit, output voltage Vout.The current value that current Hall sensor 101 is gathered be current Hall sensor 102 and electric current suddenly
The electric current sum that your sensor 103 is gathered, i.e. the expression formula of the current Hall sensor 101 is：
I1=I2+I3；
Wherein, I2For the current value of the collection of current Hall sensor 102, I3For the electric current of the collection of current Hall sensor 103
Value；
The expression formula of input power and DC-DC change-over circuit impedance sums is：
Z=R+i (ωL-1/(ωC))；
Wherein R be resistance, ωLFor induction reactance, 1/ (ωC) it is capacitive reactance；
In this circuit, its simple calculation is：
Z=P/I1 2；
Wherein, P be DC-DC circuit instantaneous power, I1For the sampled value of current Hall sensor 101.
Embodiment 2
The invention is not restricted to above-mentioned embodiment, second embodiment of following presentation.Fig. 6 represents that possessing band of the present invention disturbs
Another kind of structure of dynamic dc-dc.
In the present embodiment, the first sample circuit, the second sample circuit, the 3rd sample circuit are voltage hall sensor.
First DC-to-dc change-over circuit 104 includes the first inductance L1, the first electric capacity C1, the second electric capacity C2, the one or two pole
Pipe D1, the first insulated gate enhancement mode FET Q1.First insulated gate enhancement mode FET Q1 connects with the first diode D1,
And first diode D1 connection voltage output end, the first insulated gate enhancement mode FET Q1 drain electrode connect the second sample circuit
102, grid connects the first output end of control circuit, and source electrode connects the first diode D1；One end connection the of the first electric capacity C1
Two sample circuits 102, other end ground connection；One end connection voltage output end of the second electric capacity C2, other end ground connection；First inductance L1
One end connect the first insulated gate enhancement mode FET Q1 source electrode, the other end ground connection.
Second DC-to-dc change-over circuit 105 includes the second inductance L2, the 3rd electric capacity C3, the 4th electric capacity C4, the two or two pole
Pipe D2, the second insulated gate enhancement mode FET Q2.Second insulated gate enhancement mode FET Q2 connects with the second diode D2,
And second diode D2 connection voltage output end, the second insulated gate enhancement mode FET Q2 source electrode connect the 3rd sample circuit
103, grid connects the second output end of control circuit, drain electrode the second diode D2 of connection；One end connection the of the 3rd electric capacity C3
Three sample circuits 103, other end ground connection；One end connection voltage output end of the 4th electric capacity C4, other end ground connection；Second inductance L2
One end connect the second insulated gate enhancement mode FET Q2 drain electrode, the other end ground connection.
As shown in fig. 6, the present embodiment provides a kind of reversed polarity buck constant-pressure type dc-dc, voltage range 0～
1000V, including voltage hall sensor 111 (selecting 0～1000V models), voltage hall sensor 112 are (from 0～50V types
Number), voltage hall sensor 113 (select 0～1000V models), DC-DC decompression converting circuits 114, DC-DC step-down conversion electricity
Road 115 and control circuit 116 (MSP430F149 chips being selected, using three AD inputs and two phase PWM output).
Wherein voltage hall sensor 112 is connected with DC-DC change-over circuits 114, voltage hall sensor 113 and DC-DC
Change-over circuit 115 is connected；After the above two circuit in parallel, after being connected on voltage hall sensor 111.Voltage hall sensor
111st, the voltage signal that voltage hall sensor 112 and voltage hall sensor 113 are gathered is transferred to control by holding wire
Circuit 116, after collection, signal transacting, output control waveform is respectively to DC-DC change-over circuits 114 and DC-DC for control circuit
Change-over circuit 115 so that the output voltage and electric current of DC-DC change-over circuits 114 meets the voltage and current after DC-DC conversions will
Ask, input voltage V2Ideal waveform figure is shown in Fig. 7 so that DC-DC change-over circuits 105 go out voltage and current and meet DC-DC turn
Voltage and current requirement after changing, input current V3Ideal waveform figure is shown in Fig. 8 so that voltage collection circuit 111 is gathered
Voltage ideal waveform be Fig. 9 shown in.
Specifically, supply voltage VinThrough voltage hall sensor 111 and the two-way sample circuit and DC-DC conversion of parallel connection
After circuit, output voltage Vout.The magnitude of voltage that voltage hall sensor 111 is gathered be voltage hall sensor 112 and voltage suddenly
The electric current sum that your sensor 113 is gathered, i.e. the expression formula of the voltage hall sensor 111 is：
U1=U2+U3；
Wherein, U2For the magnitude of voltage of the collection of voltage hall sensor 112, U3For the voltage of the collection of voltage hall sensor 113
Value；
The expression formula of input power and DC-DC change-over circuit impedance sums is：
Z=R+i (ωL-1/(ωC))；
Wherein R be resistance, ωLFor induction reactance, 1/ (ωC) it is capacitive reactance；
In this circuit, its simple calculation is：
Z=U2/P；
Wherein, P be DC-DC circuit instantaneous power, U1For the sampled value of voltage hall sensor 111.
Embodiment 3
The invention is not restricted to above-mentioned embodiment, following presentation the third embodiment.Figure 10 represents possess band of the present invention
Another kind of structure of disturbance dc-dc.
In the present embodiment, the first sample circuit 101 includes that first voltage Hall element U1 and the first current Hall are passed
Sensor A1, the second sample circuit 102 include that second voltage Hall element U2 and the second current Hall sensors A the 2, the 3rd are sampled
Circuit 103 includes tertiary voltage Hall element U3 and the 3rd current Hall sensors A 3.Wherein, the first current Hall sensor
A1 one end connects voltage input end, other end connection first voltage Hall element U1；First voltage Hall element U1 one end
Connect the first current Hall sensors A 1, other end ground connection；The one end of second current Hall sensors A 2 connects the first current Hall
Sensors A 1, other end connection second voltage Hall element U2；Second voltage Hall element U2 one end connects the second electric current
Hall element A2, other end ground connection；The one end of 3rd current Hall sensors A 3 connects the first current Hall sensors A 1, another
End connection tertiary voltage Hall element U3；Tertiary voltage Hall element U3 one end connects the 3rd current Hall sensors A 3,
The other end is grounded.
First DC-to-dc change-over circuit 104 includes the first inductance L1, the first electric capacity C1, the second electric capacity C2, the one or two pole
Pipe D1, the first insulated gate enhancement mode FET Q1.First inductance L1 connects with the first diode D1, and the first inductance L1 connects
Second current Hall sensors A 2, the first diode D1 connection voltage output ends；It is electric that one end of first electric capacity C1 links to first
The leading portion of sense L1, other end ground connection, one end of the second electric capacity C2 connects the rear end of the first diode D1, other end ground connection；First
The grid of insulated gate enhancement mode FET Q1 connects the first output end of control circuit, and drain electrode is connected to after the first inductance L1
End, source ground.
Second DC-to-dc change-over circuit 105 includes the second inductance L2, the 3rd electric capacity C3, the 4th electric capacity C4, the two or two pole
Pipe D2, the second insulated gate enhancement mode FET Q2.Second inductance L2 connects with the second diode D2, and the second inductance L2 connects
3rd current Hall sensors A 3, the second diode D2 connection voltage output ends；It is electric that one end of 3rd electric capacity C3 links to second
The leading portion of sense L2, other end ground connection, one end of the 4th electric capacity C4 connects the rear end of the second diode D2, other end ground connection；Second
The grid of insulated gate enhancement mode FET Q2 connects the second output end of control circuit, and drain electrode is connected to after the second inductance L2
End, source ground.
As shown in Figure 10, the present embodiment provides a kind of boosting constant pressure or constant-current type dc-dc, current range 0～
300A, 45～250V of voltage range, sample circuit 121 includes current Hall sensors A 1 (selecting 0～100A models) and voltage
Hall element U1 (selecting 0～300V models), sample circuit 122 include current Hall sensors A 2 (selecting 0～5A models)
Include that current Hall sensors A 3 (selects 0～5A with voltage hall sensor U2 (selecting 0～300V models), sample circuit 123
Model) and voltage hall sensor U3 (selecting 0～10V models), DC-DC voltage up converting circuit 124, DC-DC boost conversions electricity
Road 125 and control circuit 126 (MPC5643L chips being selected, using six AD inputs and two phase PWM output).
Wherein sample circuit 122 is connected with DC-DC change-over circuits 124, and sample circuit 123 is gone here and there with DC-DC change-over circuits 125
Connection；After the above two circuit in parallel, after being connected on sample circuit 121.Sample circuit 121, sample circuit 122 and sample circuit
123 electric currents for being gathered and voltage signal are transferred to control circuit 126 by holding wire, and control circuit is at collection, signal
After reason, output control waveform is respectively to DC-DC change-over circuits 124 and DC-DC change-over circuits 125 so that DC-DC change-over circuits
124 output voltage and electric current meet the voltage and current requirement after DC-DC conversions, input current I2Ideal waveform figure is Figure 11
It is shown so that DC-DC change-over circuits 125 go out voltage and current and meet the voltage and current requirement after DC-DC conversions, input current
I3Ideal waveform figure is shown in Figure 12 so that the electric current ideal waveform that sample circuit 121 is gathered is shown in Figure 13.
Specifically, supply voltage VinThrough sample circuit 121 and the two-way sample circuit and DC-DC change-over circuits of parallel connection
Afterwards, output voltage Vout.The electricity that the current value that sample circuit 121 is gathered is gathered by sample circuit 122 and sample circuit 123
Sum is flowed, i.e. the expression formula of the electric current of sample circuit 121 is：
I1=I2+I3；
Wherein, I2For the current value of the collection of sample circuit 122, I3For the current value of the collection of sample circuit 123；
The expression formula of input power and DC-DC change-over circuit impedance sums is：
Z=R+i (ωL-1/(ωC))；
Wherein R be resistance, ωLFor induction reactance, 1/ (ωC) it is capacitive reactance；
In this circuit, its simple calculation is：
Z=P/I1 2；
Wherein, P designs output general power, I for DC-DC circuit1For the sampled value of sample circuit 121.
Those of ordinary skill in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification all will fall in the range of claims of the present invention.
Claims (10)
1. it is a kind of with disturbance DC-to-dc converter, it is characterised in that include：
Voltage input end, voltage output end, the first sample circuit, the second sample circuit, the 3rd sample circuit, the first direct current-straight
Stream change-over circuit, the second DC-to-dc change-over circuit, control circuit；
Second sample circuit is connected with the first DC-to-dc change-over circuit, forms the first sampling DC converting circuit；
3rd sample circuit is connected with the second DC-to-dc change-over circuit, forms the second sampling DC converting circuit；
Voltage input end, the first sample circuit, the first sampling DC converting circuit are in parallel with the second sampling DC converting circuit
Circuit, voltage output end are sequentially connected in series；
The control circuit includes first input end, the second input, the 3rd input, the first output end, the second output end；
The first input end connects the first sample circuit, and second input connects the second sample circuit, and the described 3rd is defeated
Enter the 3rd sample circuit of end connection, first output end connects the first DC-to-dc change-over circuit, and second output end connects
Connect the second DC-to-dc change-over circuit.
2. as claimed in claim 1 with the DC-to-dc converter of disturbance, it is characterised in that：
First sample circuit, the second sample circuit, the 3rd sample circuit are current Hall sensor.
3. as claimed in claim 2 with the DC-to-dc converter of disturbance, it is characterised in that：
The first DC-to-dc change-over circuit includes the first inductance, the first electric capacity, the second electric capacity, the first diode, first exhausted
Edge grid enhancement mode FET；
First inductance and the first Diode series, and first the second sample circuit of inductance connection, the first diode connection electricity
Pressure output end；
One end of first electric capacity links to the leading portion of the first inductance, other end ground connection, and one end of the second electric capacity connects the one or two pole
The rear end of pipe, other end ground connection；
The grid of the first insulated gate enhancement mode FET connects the first output end of control circuit, and drain electrode is connected to the first inductance
Rear end, source ground.
4. as claimed in claim 3 with the DC-to-dc converter of disturbance, it is characterised in that：
The second DC-to-dc change-over circuit includes the second inductance, the 3rd electric capacity, the 4th electric capacity, the second diode, second exhausted
Edge grid enhancement mode FET；
Second inductance and the second Diode series, and the sample circuit of the second inductance connection the 3rd, the second diode connection electricity
Pressure output end；
One end of 3rd electric capacity links to the leading portion of the second inductance, other end ground connection, and one end of the 4th electric capacity connects the two or two pole
The rear end of pipe, other end ground connection；
The grid of the second insulated gate enhancement mode FET connects the second output end of control circuit, and drain electrode is connected to the second inductance
Rear end, source ground.
5. as claimed in claim 1 with the DC-to-dc converter of disturbance, it is characterised in that：
First sample circuit, the second sample circuit, the 3rd sample circuit are voltage hall sensor.
6. as claimed in claim 5 with the DC-to-dc converter of disturbance, it is characterised in that：
The first DC-to-dc change-over circuit includes the first inductance, the first electric capacity, the second electric capacity, the first diode, first exhausted
Edge grid enhancement mode FET；
The first insulated gate enhancement mode FET and the first Diode series, and the first diode connection voltage output end,
The drain electrode of the first insulated gate enhancement mode FET connects the second sample circuit, and grid connects the first output end of control circuit,
Source electrode connects the first diode；
One end of first electric capacity connects the second sample circuit, other end ground connection；One end connection voltage output end of the second electric capacity, separately
One end is grounded；
One end of first inductance connects the source electrode of the first insulated gate enhancement mode FET, other end ground connection.
7. as claimed in claim 5 with the DC-to-dc converter of disturbance, it is characterised in that：
The second DC-to-dc change-over circuit includes the second inductance, the 3rd electric capacity, the 4th electric capacity, the second diode, second exhausted
Edge grid enhancement mode FET；
The second insulated gate enhancement mode FET and the second Diode series, and the second diode connection voltage output end,
The source electrode of the second insulated gate enhancement mode FET connects the 3rd sample circuit, and grid connects the second output end of control circuit,
Drain electrode the second diode of connection；
One end of 3rd electric capacity connects the 3rd sample circuit, other end ground connection；One end connection voltage output end of the 4th electric capacity, separately
One end is grounded；
One end of second inductance connects the drain electrode of the second insulated gate enhancement mode FET, other end ground connection.
8. as claimed in claim 1 with the DC-to-dc converter of disturbance, it is characterised in that：
First sample circuit includes first voltage Hall element and the first current Hall sensor, the second sample circuit bag
Include second voltage Hall element and the second current Hall sensor, the 3rd sample circuit include tertiary voltage Hall element and
3rd current Hall sensor；
Wherein, first current Hall sensor one end connection voltage input end, other end connection first voltage Hall element；The
One voltage hall sensor one end connects the first current Hall sensor, other end ground connection；
Second current Hall sensor one end connects the first current Hall sensor, other end connection second voltage hall sensing
Device；Second voltage Hall element one end connects the second current Hall sensor, other end ground connection；
3rd current Hall sensor one end connects the first current Hall sensor, other end connection tertiary voltage hall sensing
Device；Tertiary voltage Hall element one end connects the 3rd current Hall sensor, other end ground connection.
9. as claimed in claim 8 with the DC-to-dc converter of disturbance, it is characterised in that：
The first DC-to-dc change-over circuit includes the first inductance, the first electric capacity, the second electric capacity, the first diode, first exhausted
Edge grid enhancement mode FET；
First inductance and the first Diode series, and first inductance connection the second current Hall sensor, the first diode
Connection voltage output end；
One end of first electric capacity links to the leading portion of the first inductance, other end ground connection, and one end of the second electric capacity connects the one or two pole
The rear end of pipe, other end ground connection；
The grid of the first insulated gate enhancement mode FET connects the first output end of control circuit, and drain electrode is connected to the first inductance
Rear end, source ground.
10. as claimed in claim 8 with the DC-to-dc converter of disturbance, it is characterised in that：
The second DC-to-dc change-over circuit includes the second inductance, the 3rd electric capacity, the 4th electric capacity, the second diode, second exhausted
Edge grid enhancement mode FET；
Second inductance and the second Diode series, and the current Hall sensor of the second inductance connection the 3rd, the second diode
Connection voltage output end；
One end of 3rd electric capacity links to the leading portion of the second inductance, other end ground connection, and one end of the 4th electric capacity connects the two or two pole
The rear end of pipe, other end ground connection；
The grid of the second insulated gate enhancement mode FET connects the second output end of control circuit, and drain electrode is connected to the second inductance
Rear end, source ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094563.7A CN106560988A (en) | 2016-12-02 | 2016-12-02 | DC-DC converter with disturbance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094563.7A CN106560988A (en) | 2016-12-02 | 2016-12-02 | DC-DC converter with disturbance |
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| CN201611094563.7A Pending CN106560988A (en) | 2016-12-02 | 2016-12-02 | DC-DC converter with disturbance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306507A (en) * | 2018-02-05 | 2018-07-20 | 山东大学 | There are three the intermediate capacitance formula Boost DC converters and method of input source for tool |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855987A (en) * | 2012-11-30 | 2014-06-11 | 西安智海电力科技有限公司 | Energy-saving anti-interference power conversion circuit |
| CN104158397A (en) * | 2014-08-08 | 2014-11-19 | 清华大学 | Integrated DC/DC convertor and electrochemical energy storage system |
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2016
- 2016-12-02 CN CN201611094563.7A patent/CN106560988A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103855987A (en) * | 2012-11-30 | 2014-06-11 | 西安智海电力科技有限公司 | Energy-saving anti-interference power conversion circuit |
| CN104158397A (en) * | 2014-08-08 | 2014-11-19 | 清华大学 | Integrated DC/DC convertor and electrochemical energy storage system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306507A (en) * | 2018-02-05 | 2018-07-20 | 山东大学 | There are three the intermediate capacitance formula Boost DC converters and method of input source for tool |
| CN108306507B (en) * | 2018-02-05 | 2019-06-14 | 山东大学 | There are three the intermediate capacitance formula Boost DC converters and method of input source for tool |
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