CN110233566A - Drive control circuit and household appliance - Google Patents
Drive control circuit and household appliance Download PDFInfo
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- CN110233566A CN110233566A CN201910606347.3A CN201910606347A CN110233566A CN 110233566 A CN110233566 A CN 110233566A CN 201910606347 A CN201910606347 A CN 201910606347A CN 110233566 A CN110233566 A CN 110233566A
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- switch
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- control terminal
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- 238000000034 method Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 21
- 230000005669 field effect Effects 0.000 claims description 13
- 239000004065 semiconductor Substances 0.000 claims description 13
- 229910044991 metal oxide Inorganic materials 0.000 claims description 11
- 150000004706 metal oxides Chemical class 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 2
- 239000000779 smoke Substances 0.000 claims description 2
- 230000010349 pulsation Effects 0.000 claims 1
- 230000001737 promoting effect Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 11
- 230000003071 parasitic effect Effects 0.000 description 11
- 230000005611 electricity Effects 0.000 description 9
- 238000004590 computer program Methods 0.000 description 7
- 238000012421 spiking Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000012937 correction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000002459 sustained effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Classifications
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
-
- 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
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
-
- 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
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4233—Arrangements for improving power factor of AC input using a bridge converter comprising active switches
-
- 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
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- 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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/6871—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor
-
- 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
- H02M1/0048—Circuits or arrangements for reducing losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Inverter Devices (AREA)
Abstract
The present invention provides a kind of drive control circuit and household appliances, wherein, drive control circuit includes: half-bridge circuit, the half-bridge circuit access is in bus circuit, the half-bridge circuit is configured as carrying out conversion process to power supply signal, each bridge arm of the half-bridge circuit specifically includes: switching tube, the switching tube are configured with control terminal；Clamping unit, the clamping unit is configured as limiting the voltage value of the control terminal of the switching tube, wherein, first switch tube in the half-bridge circuit is in conducting initial time, there is peak voltage in the control terminal for triggering the second switch in the half-bridge circuit, and the peak voltage can be weakened by the clamping unit.According to the technical solution of the present invention, the risk that peak voltage causes upper and lower two switching tubes to simultaneously turn on is reduced, the reliability for promoting drive control circuit and household appliance is conducive to.
Description
Technical field
The present invention relates to drive control fields, in particular to a kind of drive control circuit and a kind of household appliance.
Background technique
Convertible frequency air-conditioner market at present generallys use rectifier, inductor, PFC (Power to promote load running efficiency
Factor Correction, PFC) mould group, the drive control of electrolytic capacitor and inverter composition motor (load)
Circuit.
In the related technology, in order to reduce the power consumption of BOOST type PFC and the power consumption of rectifier, using totem pole type PFC mould group
BOOST type PFC and rectifier are substituted, still, in order to further improve the efficiency of circuit, totem pole type PFC is usually set
At least one half-bridge circuit in mould group keeps high-frequency work, due between the input terminal (or control terminal) and output end of switching tube
There are parasitic capacitance, three ends of switching tube are denoted as grid g, source electrode s and drain electrode d, based on known to Miller effect:
(1) parasitic capacitance CdgTwo switching tubes of half-bridge circuit are caused to generate larger peak voltage during alternate conduction
And oscillation, severely impact the reliability of drive control circuit.
(2) before switching tube is opened, there are junction capacity and parasitic capacitance C between grid and source electrodegs, when the grid of switching tube
After voltage between voltage and source voltage is greater than switching tube conducting voltage, switching tube, C could be connectedgsIncrease, cause to switch
The response time of pipe is long and power consumption is big.
In addition, any discussion of the whole instruction to background technique, not representing the background technique must be fields
The prior art that technical staff is known, not representing in the whole instruction to any discussion of the prior art think that this is existing
Technology must be widely known or certain common knowledge for constituting this field.
Summary of the invention
The present invention is directed to solve at least one of the technical problems existing in the prior art or related technologies.
For this purpose, an object of the present invention is to provide a kind of drive control circuits.
Yet another object of the invention is that proposing a kind of household appliance.
In the technical solution of the first aspect of the present invention, a kind of drive control circuit is proposed, comprising: half-bridge circuit,
In bus circuit, the half-bridge circuit is configured as carrying out conversion process to power supply signal, described for the half-bridge circuit access
Each bridge arm of half-bridge circuit specifically includes: switching tube, the switching tube are configured with control terminal；Clamping unit, it is described
Clamping unit is configured as limiting the voltage value of the control terminal of the switching tube, wherein the first switch in the half-bridge circuit
There is peak voltage, the spike in conducting initial time, the control terminal for triggering the second switch in the half-bridge circuit in pipe
Voltage can be weakened by the clamping unit.
In the technical scheme, for being equipped with the half-bridge circuit of at least two switching tubes, due to the control of switching tube
There are parasitic capacitance between end and output end, parasitic capacitance can cause under the amplification of switching tube between two switching tubes
Voltage disturbance by the way that switching tube and corresponding clamping unit are arranged in half-bridge circuit, and is arranged described in clamping unit limitation
The voltage value of the control terminal of switching tube can effectively absorb peak voltage, cause half-bridge circuit straight-through to reduce peak voltage
A possibility that, and then improve the reliability and stability of half-bridge circuit.
Specifically, for the first switch tube in the half-bridge circuit in conducting initial time, second switch is in cut-off shape
State, Miller effect will lead to the second switch control terminal in the half-bridge circuit and peak voltage occur, and the peak voltage reaches
To second switch turn-on threshold threshold value when, will lead to second switch conducting, and then first switch tube and second caused to be opened
It closes pipe to simultaneously turn on, and Damage by Short Circuit occurs.
It wherein, include at least one of capacitive element, resistance element and switching device in clamping unit, and clamping unit
One end be connected to control terminal, absorb control terminal occur peak voltage while, the turn-on time of lifting switch pipe, together
When, advantageously reduce the power consumption of switching tube.
In addition, drive control circuit according to the above embodiment of the present invention, can also have the following additional technical features:
In any of the above-described technical solution, optionally, the switching tube is additionally provided with first end and second end, the switching tube
When conducting, electric current flows to the second end by the first end, accesses biasing resistor between the control terminal and the second end,
When Continuity signal is input to the control terminal, the partial pressure of the biasing resistor is greater than the conducting voltage threshold value of the switching tube.
In the technical scheme, the first end of above-mentioned switching tube is denoted as output end, and control terminal is the input terminal of switching tube, leads to
It crosses and accesses biasing resistor between second end and control terminal, can be opened between grid and source electrode by the partial pressure of biasing resistor
PN junction, be conducive to promoted be input to control terminal Continuity signal reliability.
In any of the above-described technical solution, optionally, the clamping unit further include: capacitive element is series at described open
Between the control terminal and the second end for closing pipe, the capacitive element is configured as the peak voltage of releasing.
In the technical scheme, include capacitive element by setting clamping unit, and capacitive element is series at control terminal
Between second end, capacitive element release peak voltage is that is, neutralize the electricity of parasitic capacitance storage, to reduce
Miller effect in half-bridge circuit is conducive to the reliability for promoting half-bridge circuit.
In any of the above-described technical solution, optionally, the clamping unit includes: switching device, the switching device
First end is connected to the control terminal, and the second end of the switching device is connected to the second end of the switching tube, then described to open
When closing the control terminal generation peak voltage of pipe, the switch device conductive, with the peak voltage of releasing.
In the technical scheme, it is connected between control terminal and second end by the way that switching device is arranged, and then in parasitic electricity
Hold to capacitive element discharge electricity when, switching device also can be in the conductive state, to promote the efficiency of releasing of peak voltage, into one
Improve the reliability of half-bridge circuit to step.
In any of the above-described technical solution, optionally, further includes: driver, the output end of the driver are connected to institute
State the control terminal of switching tube；First switch resistance, be series at the switching tube control terminal and the driver output end it
Between；Concatenated second switch resistance and one-way conduction element, with the first switch resistor coupled in parallel, wherein the driver to
When the control terminal of the switching tube exports the Continuity signal, the one-way conduction element ends, described in the Continuity signal warp
First switch resistive transmission is cut to the control terminal of the switching tube and the driver to the output of the control terminal of the switching tube
When stop signal, the one-way conduction element conductive, the pick-off signal is through the first switch resistance and second switch electricity
Resistance is transmitted to the control terminal of the switching tube.
In the technical scheme, by be arranged in the manner described above driver, first switch resistance, second switch resistance and
One-way conduction element only through first switch resistance, and is transmitted to control in pick-off signal when Continuity signal is transmitted to control terminal
When end, first switch resistance, second switch resistance and one-way conduction element are simultaneously turned on, therefore, the transmission speed of pick-off signal
It is faster than the transmission speed of Continuity signal, is conducive to the reliability for promoting switch tube overcurrent protection, in addition, spiking can also be with
By first switch resistance, second switch resistance and one-way conduction element rapidly to clamping unit discharge, therefore, be conducive into
The impact of peak voltage switch tube is reduced to one step, and reduces response time and the power consumption of switching tube.
In any of the above-described technical solution, optionally, further includes: bridge-type mould group, the bridge-type mould group include two parallel connections
The half-bridge circuit, if the bridge-type mould group input terminal access AC signal, the bridge-type mould group output end output
Direct current signal, if the input terminal of the bridge-type mould group accesses direct current signal, the output end output exchange letter of the bridge-type mould group
Number.
In the technical scheme, the conversion process of power supply signal is realized by the on and off of switching tube, usually
The AC signal of input is converted into direct current signal, or the direct current signal of input is converted into AC signal and then drives load can
It is run by ground.
In any of the above-described technical solution, optionally, further includes: PFC mould group, the PFC
Mould group includes two half-bridge circuits in parallel, and the switching tube of four bridge arms of the PFC mould group is successively denoted as
First switch tube, second switch, third switching tube and the 4th switching tube, the first switch tube and the second switch it
Between common end access the first incoming line of the power supply signal, between the third switching tube and the 4th switching tube
Common end is accessed between the second incoming line and the first switch tube and the 4th switching tube of the power supply signal
The corresponding high voltage bus of the pulsating direct current signal is accessed in common end, between the second switch and the third switching tube
The corresponding low-voltage bus bar of the pulsating direct current signal is accessed in common end.
It in the technical scheme, include two half-bridge circuits in parallel by the way that PFC mould group is arranged, and four
It is equipped with switching tube in bridge arm, that is, constitutes totem pole type PFC (Power Factor Correction, PFC)
Mould group, optionally, upper switch pipe in half-bridge circuit is NPN type triode, and lower switch pipe is PNP type triode, and upper switch
Pipe is that common emitter connects with lower switch pipe, and emitter is also an output end of above-mentioned totem pole type PFC mould group.
Alternatively it is also possible to set MOSFET (Metal-Oxide- for the switching tube in totem pole type PFC mould group
Semiconductor Field Effect Transistor, Metal Oxide Semiconductor Field Effect Transistor), switching tube
It can be SiC type switching tube or GaN type switching tube, therefore, the switching frequency of switching tube can be promoted further, although can
Load running efficiency is further promoted, still, electromagnetic interference signal is stronger, this just needs that filter module is added to reduce electromagnetism
Interference signal.
Optionally, it is integrated between the source electrode (emitter) of the switching tube of above-mentioned totem pole type PFC and drain electrode (collector)
Reversed freewheeling diode.
In any of the above-described technical solution, optionally, the switching tube is Metal Oxide Semiconductor Field Effect Transistor
Or insulated gate bipolar transistor, wherein the grid of the Metal Oxide Semiconductor Field Effect Transistor is connected to controller
Instruction output end, access reversed two pole of afterflow between the source electrode and drain electrode of the Metal Oxide Semiconductor Field Effect Transistor
Pipe, the base stage of the insulated gate bipolar transistor are connected to the instruction output end of controller, the insulated gate bipolar crystal
Reversed freewheeling diode is accessed between the emitter and collector of pipe.
In any of the above-described technical solution, optionally, further includes: electrolytic capacitor is set to the PFC mould group
Output end, the electrolytic capacitor is configured as receiving the pulsating direct current signal and is converted to direct current signal；Inverter, connection
To the output end of the electrolytic capacitor, the inverter is configured as controlling the direct current signal to load supplying.
In the technical scheme, electrolytic capacitor is arranged by the output end in half-bridge circuit, on the one hand, electrolytic capacitor can
The electricity of load running is provided, on the other hand, electrolytic capacitor can also absorb the surging signal for including in drive control circuit, can
The electromagnetic interference signal and noise for flowing to inverter are further reduced, the reliability for promoting load running is conducive to.
Wherein, if inverter includes two half-bridge circuits in parallel, single-phase load can be driven to run, if inverter packet
Three half-bridge circuits in parallel are included, then threephase load can be driven to run.
In any of the above-described technical solution, optionally, the capacitance value range of the electrolytic capacitor be 10uF~
20000uF。
In any of the above-described technical solution, optionally, further includes: electric power detection mould group is accessed in second input line
Lu Zhong, the electric power detection mould group are configured as detecting the power supply signal to the power supply volume of the load, and the power supply volume is used
It is adjusted in the turn-on frequency to the switching tube.
In the technical scheme, by setting electric power detection mould group access in the second incoming line, to power supply signal into
Row detection, and switching frequency is adjusted according to testing result, for example, detecting that it is more that the electric current in power supply signal carries
When spiking, in order to avoid spiking amplifies and is superimposed by half-bridge circuit, it can be reduced by reducing switching frequency
Electromagnetic interference signal and spiking.
In the technical solution of the second aspect of the present invention, a kind of household appliance is proposed, comprising: load；Such as the present invention
Any one of first aspect technical solution described in drive control circuit, the dynamic control circuit is configured control for telecommunications
Number to load supplying.
In the technical scheme, household appliance includes drive control circuit as described in the above technical scheme, therefore, should
Household appliance includes whole beneficial effects of drive control circuit as described in the above technical scheme, is repeated no more again.
In the above-mentioned technical solutions, optionally, the household appliance include air conditioner, refrigerator, fan, smoke exhaust ventilator,
At least one of dust catcher and host computer.
Additional aspect and advantage of the invention will become obviously in following description section, or practice through the invention
Recognize.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows the schematic diagram of the drive control circuit of one embodiment in the prior art；
Fig. 2 shows the schematic diagrames of the drive control circuit of another embodiment in the prior art；
Fig. 3 shows the schematic diagram of drive control circuit according to an embodiment of the invention；
Fig. 4 shows the schematic diagram of drive control circuit according to another embodiment of the invention；
Fig. 5 shows the schematic diagram of drive control circuit according to another embodiment of the invention.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
It is carried out below with reference to drive control circuit and household appliance of the Fig. 1 to Fig. 5 to embodiment according to the present invention specific
Explanation.
As shown in Figure 1, generalling use inductor L, totem pole type PFC after power supply signal AC input to drive control circuit
(Power Factor Correction, PFC) mould group, electrolytic capacitor E and inverter constitute motor (load)
Drive control circuit, since a large amount of switching tubes (first switch tube Q is usually arranged in totem pole type PFC mould group1, second switch
Q2, third switching tube Q3With the 4th switching tube Q4), in addition, Hall sensor is arranged in the charge circuit of inductor L, based on suddenly
You detect electric current by sensor.
As shown in Figure 1, first switch tube Q1Source electrode and drain electrode between be equipped with the first reversed sustained diode1, second opens
Close pipe Q2Source electrode and drain electrode between be equipped with the second reversed sustained diode2, third switching tube Q3Source electrode and drain electrode between set
There is the reversed sustained diode of third3, the 4th switching tube Q4Source electrode and drain electrode between be equipped with the 4th reversed sustained diode4。
As shown in Fig. 2, controller is connected to driver, and by driver driving switch pipe on or off, for example, the
One switching tube Q1Grid and driver between access first resistor R1(being mainly used for current limliting and partial pressure), first switch tube Q1's
Second resistance R is accessed between grid and source electrode2(being mainly used for driving conducting), second switch Q2Grid and driver between
Access 3rd resistor R3(being mainly used for current limliting and partial pressure), second switch Q2Grid and source electrode between access the 4th resistance R4
(being mainly used for driving conducting).
As shown in Fig. 3, Fig. 4 and Fig. 5, in totem pole type PFC (Power Factor Correction, power factor school
Just) in mould group, if switching tube is N-type MOSFET, the peak current I that parasitic capacitance generatesdg, first switch tube Q1It is first in conducting
Begin the moment, second switch Q2In off state, Miller effect will lead to the second switch Q in the half-bridge circuit2Control
There is peak voltage in end, and the peak voltage reaches second switch Q2Turn-on threshold threshold value when, will lead to second switch Q2
Conducting, and then lead to first switch tube Q1With second switch Q2It simultaneously turns on, and Damage by Short Circuit occurs.
As shown in Fig. 3, Fig. 4 and Fig. 5, drive control circuit according to an embodiment of the invention, comprising: half-bridge circuit
100, in bus circuit, the half-bridge circuit 100 is configured as converting power supply signal for the access of half-bridge circuit 100
Processing, each bridge arm of the half-bridge circuit 100 specifically include: switching tube, the switching tube are configured with control terminal；Pincers
Bit location 200, the clamping unit 200 are configured as limiting the voltage value of the control terminal of the switching tube, wherein the half-bridge
First switch tube Q in circuit 1001In conducting initial time, the second switch Q in the half-bridge circuit 100 is triggered2Control
There is peak voltage in end processed, and the peak voltage can be weakened by the clamping unit 200.
In the technical scheme, for being equipped with the half-bridge circuit 100 of at least two switching tubes, due to the control of switching tube
There are parasitic capacitance C between end processed and output enddg, parasitic capacitance CdgIt can cause two switches under the amplification of switching tube
By the way that switching tube and corresponding clamping unit 200 are arranged in half-bridge circuit 100, and pincers are arranged in voltage disturbance between pipe
Bit location 200 limits the voltage value of the control terminal of the switching tube, can effectively absorb peak voltage, to reduce peak voltage
A possibility that causing half-bridge circuit to lead directly to, and then improve the reliability and stability of half-bridge circuit 100.
Specifically, the first switch tube Q in the half-bridge circuit 1001In conducting initial time, second switch, which is in, is cut
Only state, Miller effect will lead to the second switch Q in the half-bridge circuit 1002There is peak voltage, the point in control terminal
Peak voltage reaches second switch Q2Turn-on threshold threshold value when, will lead to second switch conducting, and then lead to first switch
Pipe Q1With second switch Q2It simultaneously turns on, and Damage by Short Circuit occurs.
It wherein, include capacitive element C in clamping unit 2000, resistance element and switching element T0At least one of, and clamp
One end of bit location 200 is connected to control terminal, while absorbing the peak voltage that control terminal occurs, the conducting of lifting switch pipe
Time, meanwhile, advantageously reduce the power consumption of switching tube.
In addition, drive control circuit according to the above embodiment of the present invention, can also have the following additional technical features:
In any of the above-described technical solution, optionally, the switching tube is additionally provided with first end and second end, the switching tube
When conducting, electric current flows to the second end by the first end, accesses biasing resistor between the control terminal and the second end,
When Continuity signal is input to the control terminal, the partial pressure of the biasing resistor is greater than the conducting voltage threshold value of the switching tube.
In the technical scheme, the first end of above-mentioned switching tube is denoted as output end, and control terminal is the input terminal of switching tube, leads to
It crosses and accesses biasing resistor between second end and control terminal, can be opened between grid and source electrode by the partial pressure of biasing resistor
PN junction, be conducive to promoted be input to control terminal Continuity signal reliability.
In any of the above-described technical solution, optionally, the clamping unit 200 further include: capacitive element C0, it is series at institute
It states between the control terminal of switching tube and the second end, the capacitive element C0It is configured as the peak voltage of releasing.
It in the technical scheme, include capacitive element C by setting clamping unit 2000, and by capacitive element C0It is series at
Between control terminal and second end, capacitive element C0Peak voltage is discharged that is, to parasitic capacitance CdgDuring the electricity of storage carries out
With, to reduce the Miller effect in half-bridge circuit 100, be conducive to promoted half-bridge circuit 100 reliability.
In any of the above-described technical solution, optionally, the clamping unit 200 includes: switching element T0, the derailing switch
Part T0First end be connected to the control terminal, the second end of the switching element T 0 is connected to the second end of the switching tube,
When then the control terminal of the switching tube generates the peak voltage, the switching element T0Conducting, with the peak voltage of releasing.
In the technical scheme, by the way that switching element T is arranged0It is connected between control terminal and second end, and then in parasitism
Capacitor CdgTo capacitive element C0When discharging electricity, switching element T0Also can be in the conductive state, to promote releasing for peak voltage
Efficiency further improves the reliability of half-bridge circuit 100.
Further, as shown in Figure 4 and Figure 5, for lifting switch device T0Reliability, in switching element T0Control
It terminates into current-limiting resistance R02。
In any of the above-described technical solution, optionally, further includes: driver, the output end of the driver are connected to institute
State the control terminal of switching tube；First switch resistance, be series at the switching tube control terminal and the driver output end it
Between；Concatenated second switch resistance R01With one-way conduction element D0, with the first switch resistor coupled in parallel, wherein the driving
When device exports the Continuity signal to the control terminal of the switching tube, the one-way conduction element D0Cut-off, the Continuity signal
The control terminal of control terminal and the driver through the first switch resistive transmission to the switching tube to the switching tube
When exporting pick-off signal, the one-way conduction element D0Conducting, the pick-off signal is through the first switch resistance and described the
Two switch resistance R01It is transmitted to the control terminal of the switching tube.
In the technical scheme, by the way that driver, first switch resistance, second switch resistance R are arranged in the manner described above01
With one-way conduction element D0, when Continuity signal is transmitted to control terminal, only through first switch resistance, and it is transmitted in pick-off signal
When control terminal, first switch resistance, second switch resistance R01With one-way conduction element D0It simultaneously turns on, therefore, pick-off signal
Transmission speed is faster than the transmission speed of Continuity signal, is conducive to the reliability for promoting switch tube overcurrent protection, in addition, spike is believed
Number it can also pass through first switch resistance, second switch resistance R01With one-way conduction element D0Rapidly released to clamping unit 200
It puts, therefore, is conducive to the impact for further reducing peak voltage switch tube, and reduce response time and the function of switching tube
Consumption.
Wherein, first switch resistance includes first switch tube Q1Grid and driver between resistance R1, first switch electricity
Resistance further includes second switch Q2Grid and driver between resistance R3。
In any of the above-described technical solution, optionally, further includes: bridge-type mould group, the bridge-type mould group include two parallel connections
The half-bridge circuit 100, if the input terminal of the bridge-type mould group accesses AC signal, the output end of the bridge-type mould group is defeated
Direct current signal out, if the input terminal of the bridge-type mould group accesses direct current signal, the output end of the bridge-type mould group exports exchange
Signal.
In the technical scheme, the conversion process of power supply signal is realized by the on and off of switching tube, usually
The AC signal of input is converted into direct current signal, or the direct current signal of input is converted into AC signal and then drives load can
It is run by ground.
In any of the above-described technical solution, optionally, further includes: PFC mould group, the PFC
Mould group includes two half-bridge circuits 100 in parallel, and the switching tube of four bridge arms of the PFC mould group is successively
It is denoted as first switch tube Q1, second switch Q2, third switching tube Q3With the 4th switching tube Q4, the first switch tube Q1With it is described
Second switch Q2Between common end access the first incoming line of the power supply signal, the third switching tube Q3With it is described
4th switching tube Q4Between common end access the second incoming line and the first switch tube Q of the power supply signal1With
The 4th switching tube Q4Between common end access the corresponding high voltage bus of the pulsating direct current signal, the second switch
Q2With the third switching tube Q3Between common end access the corresponding low-voltage bus bar of the pulsating direct current signal.
It in the technical scheme, include two half-bridge circuits 100 in parallel by the way that PFC mould group is arranged, and four
It is equipped with switching tube in a bridge arm, that is, constitutes totem pole type PFC (Power Factor Correction, power factor school
Just) mould group, optionally, the upper switch pipe in half-bridge circuit 100 is NPN type triode, and lower switch pipe is PNP type triode, and
Upper switch pipe is that common emitter connects with lower switch pipe, and emitter is also an output end of above-mentioned totem pole type PFC mould group.
Alternatively it is also possible to set MOSFET (Metal-Oxide- for the switching tube in totem pole type PFC mould group
Semiconductor Field Effect Transistor, Metal Oxide Semiconductor Field Effect Transistor), switching tube
It can be SiC type switching tube or GaN type switching tube, therefore, the switching frequency of switching tube can be promoted further, although can
Load running efficiency is further promoted, still, electromagnetic interference signal is stronger, this just needs that filter module is added to reduce electromagnetism
Interference signal.
Optionally, it is integrated between the source electrode (emitter) of the switching tube of above-mentioned totem pole type PFC and drain electrode (collector)
Reversed freewheeling diode.
In any of the above-described technical solution, optionally, the switching tube is Metal Oxide Semiconductor Field Effect Transistor
Or insulated gate bipolar transistor, wherein the grid of the Metal Oxide Semiconductor Field Effect Transistor is connected to controller
Instruction output end, access reversed two pole of afterflow between the source electrode and drain electrode of the Metal Oxide Semiconductor Field Effect Transistor
Pipe, the base stage of the insulated gate bipolar transistor are connected to the instruction output end of controller, the insulated gate bipolar crystal
Reversed freewheeling diode is accessed between the emitter and collector of pipe.
In any of the above-described technical solution, optionally, further includes: electrolytic capacitor is set to the PFC mould group
Output end, the electrolytic capacitor is configured as receiving the pulsating direct current signal and is converted to direct current signal；Inverter, connection
To the output end of the electrolytic capacitor, the inverter is configured as controlling the direct current signal to load supplying.
In the technical scheme, electrolytic capacitor is arranged by the output end in half-bridge circuit 100, on the one hand, electrolytic capacitor
It is capable of providing the electricity of load running, on the other hand, electrolytic capacitor can also absorb the surging signal for including in drive control circuit,
The electromagnetic interference signal and noise for flowing to inverter can be further reduced, the reliability for promoting load running is conducive to.
Wherein, if inverter includes two half-bridge circuits 100 in parallel, single-phase load can be driven to run, if inversion
Device includes three half-bridge circuits 100 in parallel, then threephase load can be driven to run.
In any of the above-described technical solution, optionally, the capacitance value range of the electrolytic capacitor E be 10uF~
20000uF。
In any of the above-described technical solution, optionally, further includes: electric power detection mould group S is accessed in second input line
Lu Zhong, the electric power detection mould group S are configured as detecting the power supply signal AC to the power supply volume of the load, the power supply volume
It is adjusted for the turn-on frequency to the switching tube.
In the technical scheme, it is accessed in the second incoming line by setting electric power detection mould group S, to power supply signal AC
It is detected, and switching frequency is adjusted according to testing result, for example, detecting the electric current carrying in power supply signal AC
It, can be by reducing switching frequency in order to avoid spiking amplifies and is superimposed by half-bridge circuit 100 when more spiking
To reduce electromagnetic interference signal and spiking.
For the technical problems in the prior art, the invention proposes a kind of drive control circuit and household appliance,
By the way that switching tube and corresponding clamping unit are arranged in half-bridge circuit, and the control that clamping unit limits the switching tube is set
The voltage value at end processed can effectively absorb peak voltage, to reduce a possibility that peak voltage causes half-bridge circuit to lead directly to, into
And improve the reliability and stability of half-bridge circuit.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the controller of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the controller of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
It should be noted that in the claims, any reference symbol between parentheses should not be configured to power
The limitation that benefit requires.Word "comprising" does not exclude the presence of component or step not listed in the claims.Before component
Word "a" or "an" does not exclude the presence of multiple such components.The present invention can be by means of including several different components
It hardware and is realized by means of properly programmed computer.In the unit claims listing several devices, these are filled
Several in setting, which can be, to be embodied by the same item of hardware.The use of word first, second, and third is not
Indicate any sequence.These words can be construed to title.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (13)
1. a kind of drive control circuit characterized by comprising
Half-bridge circuit, in bus circuit, the half-bridge circuit is configured as carrying out power supply signal for the half-bridge circuit access
Each bridge arm of conversion process, the half-bridge circuit specifically includes:
Switching tube, the switching tube are configured with control terminal；
Clamping unit, the clamping unit are configured as limiting the voltage value of the control terminal of the switching tube, wherein the half-bridge
For first switch tube in circuit in conducting initial time, there is point in the control terminal for triggering the second switch in the half-bridge circuit
Peak voltage, the peak voltage can be weakened by the clamping unit.
2. drive control circuit according to claim 1, which is characterized in that
The switching tube is additionally provided with first end and second end, and when the switching tube is connected, electric current is as described in first end flow direction
Second end accesses biasing resistor between the control terminal and the second end, described when Continuity signal is input to the control terminal
The partial pressure of biasing resistor is greater than the conducting voltage threshold value of the switching tube.
3. drive control circuit according to claim 1, which is characterized in that the clamping unit includes:
Capacitive element is series between the control terminal of the switching tube and the second end, and the capacitive element is configured as letting out
Put the peak voltage.
4. drive control circuit according to claim 1, which is characterized in that the clamping unit includes:
Switching device, the first end of the switching device are connected to the control terminal, and the second end of the switching device is connected to
The second end of the switching tube, then when the control terminal of the switching tube generates the peak voltage, the switch device conductive, with
It releases the peak voltage.
5. drive control circuit according to claim 1, which is characterized in that further include:
Driver, the output end of the driver are connected to the control terminal of the switching tube；
First switch resistance is series between the control terminal of the switching tube and the output end of the driver；
Concatenated second switch resistance and one-way conduction element, and the first switch resistor coupled in parallel,
Wherein, when the driver exports the Continuity signal to the control terminal of the switching tube, the one-way conduction element is cut
Only, control terminal of the Continuity signal through the first switch resistive transmission to the switching tube,
And the driver to the control terminal of the switching tube export pick-off signal when, the one-way conduction element conductive, institute
State control terminal of the pick-off signal through the first switch resistance and the second switch resistive transmission to the switching tube.
6. drive control circuit according to claim 1, which is characterized in that further include:
Bridge-type mould group, the bridge-type mould group include two half-bridge circuits in parallel,
If the input terminal of the bridge-type mould group accesses AC signal, the output end of the bridge-type mould group exports direct current signal,
If the input terminal of the bridge-type mould group accesses direct current signal, the output end of the bridge-type mould group exports AC signal.
7. drive control circuit according to claim 1, which is characterized in that further include:
PFC mould group, the PFC mould group include two half-bridge circuits in parallel,
The switching tube of four bridge arms of the PFC mould group is successively denoted as first switch tube, second switch, third
The power supply signal is accessed in switching tube and the 4th switching tube, the common end between the first switch tube and the second switch
The first incoming line, the of the power supply signal is accessed in the common end between the third switching tube and the 4th switching tube
Two incoming lines,
And the common end access pulsating direct current signal between the first switch tube and the 4th switching tube is corresponding
High voltage bus, it is corresponding that the pulsating direct current signal is accessed in the common end between the second switch and the third switching tube
Low-voltage bus bar.
8. drive control circuit according to any one of claim 1 to 7, which is characterized in that
The switching tube be Metal Oxide Semiconductor Field Effect Transistor or insulated gate bipolar transistor,
Wherein, the grid of the Metal Oxide Semiconductor Field Effect Transistor is connected to the instruction output end of controller, described
Reversed freewheeling diode, the insulated gate bipolar are accessed between the source electrode and drain electrode of Metal Oxide Semiconductor Field Effect Transistor
The base stage of transistor npn npn is connected to the instruction output end of controller, the emitter and collector of the insulated gate bipolar transistor
Between access reversed freewheeling diode.
9. drive control circuit according to any one of claim 1 to 7, which is characterized in that further include:
Electrolytic capacitor, set on the output end of the PFC mould group, the electrolytic capacitor is configured as receiving pulsation directly
Stream signal is simultaneously converted to direct current signal；
Inverter, is connected to the output end of the electrolytic capacitor, and the inverter is configured as controlling the direct current signal to negative
Carry power supply.
10. drive control circuit according to claim 9, which is characterized in that
The capacitance value range of the electrolytic capacitor is 10uF~20000uF.
11. drive control circuit according to any one of claim 1 to 7, which is characterized in that further include:
Electric power detection mould group accesses in second incoming line, and the electric power detection mould group is configured as detecting the confession
Electric signal is to the power supply volume of load, and the power supply volume is for being adjusted the turn-on frequency of the switching tube.
12. a kind of household appliance characterized by comprising
Load；
Drive control circuit as described in any one of claims 1 to 11, the dynamic control circuit are configured control for telecommunications
Number to load supplying.
13. household appliance according to claim 12, which is characterized in that
The household appliance includes at least one of air conditioner, refrigerator, fan, smoke exhaust ventilator, dust catcher and host computer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910606347.3A CN110233566A (en) | 2019-07-05 | 2019-07-05 | Drive control circuit and household appliance |
| PCT/CN2019/112957 WO2021003887A1 (en) | 2019-07-05 | 2019-10-24 | Drive control circuit and home appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910606347.3A CN110233566A (en) | 2019-07-05 | 2019-07-05 | Drive control circuit and household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110233566A true CN110233566A (en) | 2019-09-13 |
Family
ID=67856772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910606347.3A Pending CN110233566A (en) | 2019-07-05 | 2019-07-05 | Drive control circuit and household appliance |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110233566A (en) |
| WO (1) | WO2021003887A1 (en) |
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| WO2021003887A1 (en) * | 2019-07-05 | 2021-01-14 | 广东美的制冷设备有限公司 | Drive control circuit and home appliance |
| CN113489289A (en) * | 2021-05-31 | 2021-10-08 | 美的集团(上海)有限公司 | Drive circuit and electric appliance comprising same |
| CN115789891A (en) * | 2022-12-07 | 2023-03-14 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, air conditioner and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114189140A (en) * | 2021-11-26 | 2022-03-15 | 山东联慧网络科技有限公司 | Miller clamping circuit complementarily controlled by DSP (digital signal processor) |
| CN117767711B (en) * | 2024-02-22 | 2024-05-24 | 杰华特微电子股份有限公司 | Unidirectional conduction circuit, bridge type driving circuit and switching power supply |
| CN117833930B (en) * | 2024-03-01 | 2024-05-14 | 北京壁仞科技开发有限公司 | Driving circuit, circuit comprising same and calibration method thereof |
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| Publication number | Publication date |
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| WO2021003887A1 (en) | 2021-01-14 |
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