CN108631761A - The control device and method of electromagnetic heating system and power switch tube - Google Patents
The control device and method of electromagnetic heating system and power switch tube Download PDFInfo
- Publication number
- CN108631761A CN108631761A CN201710158075.6A CN201710158075A CN108631761A CN 108631761 A CN108631761 A CN 108631761A CN 201710158075 A CN201710158075 A CN 201710158075A CN 108631761 A CN108631761 A CN 108631761A
- Authority
- CN
- China
- Prior art keywords
- chip
- driving chip
- switch tube
- driving
- triode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005611 electricity Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000003381 stabilizer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- 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
- H03K17/567—Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0054—Gating switches, e.g. pass gates
Landscapes
- Electronic Switches (AREA)
Abstract
The invention discloses a kind of electromagnetic heating system and the control device and method of power switch tube, the control device of the power switch tube, including：Driving chip, the driving chip are connected with the power switch tube, and the driving chip is used to drive the turn-on and turn-off of the power switch tube；Control chip, the control chip is connected with the driving chip, whether the control chip succeeds for judging itself to power on, and output locking signal controls the driving chip locking to the driving chip when judging to power on failed, so that the driving chip drives the power switch tube to turn off in locking, to, the locked driving chip when powering on failed i.e. voltage sequential and not setting up completion, prevent power switch tube from being opened by mistake in powered on moment logical, prevent power switch tube from damaging, the reliability of hoisting power switching tube.
Description
Technical field
The present invention relates to technical field of electric appliances, more particularly to a kind of control device of power switch tube, a kind of electromagnetic heating
System and a kind of control method of power switch tube.
Background technology
In relevant EMR electromagnetic resonance heating system, the driving chip usually sampled drives with the mode that chip detaches is controlled
IGBT, in complete machine powering moment, the power supply of driving chip is first established, and is established after controlling the power supply of chip.But the relevant technologies
The problem is that in powered on moment, the power supply of driving chip is first established, and driving chip is possible to IGBT and opens by mistake logical, burns out
IGBT。
For example, as shown in fig. 6, U1 ' chips in order to control, Q1 ', Q2 ', Q3 ' form driving circuit, that is, driving chip,
The driving voltage 18V of powered on moment, driving chip is established, and 2 feet for controlling chip U1 ' are possible to also that (PPG is defeated for output low level
Go out for low level it is effective), cause Q1 ' end, Q2 ' cut-off, Q3 ' is open-minded, so that driving voltage 18V is normally opened, burns out IGBT.
Therefore, the relevant technologies needs are improved.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention
One purpose is to propose a kind of control device of power switch tube, can prevent power switch tube from being opened by mistake in powered on moment logical.
It is another object of the present invention to propose a kind of electromagnetic heating system.A further object of the present invention is to propose
A kind of control method of power switch tube.
In order to achieve the above objectives, one aspect of the present invention embodiment proposes a kind of control device of power switch tube, including：
Driving chip, the driving chip are connected with the power switch tube, and the driving chip is for driving the power switch tube
Turn-on and turn-off；Chip is controlled, the control chip is connected with the driving chip, and the control chip is for judging itself
It powers on and whether succeeds, and locking signal is exported to the driving chip to control the driving chip when judging to power on failed
Locking, so that the driving chip drives the power switch tube to turn off in locking.
The control device of the power switch tube proposed according to embodiments of the present invention, judging that itself is powered on by control chip is
No success, and output locking signal is locked to driving chip with controlling driving chip when judging to power on failed, so that driving
Chip driving power switching tube in locking turns off, to locked when powering on failed i.e. voltage sequential and not setting up completion to drive
Dynamic chip, prevents power switch tube from being opened by mistake in powered on moment logical, prevents power switch tube from damaging, hoisting power switching tube it is reliable
Property.
According to one embodiment of present invention, the control chip is additionally operable to judging that the when of powering on successfully exports unlocking signal
It is unlocked to the driving chip with controlling the driving chip, and exports PPG signals to the driving chip, so that the driving
Chip drives the power switch tube on or off in unlock according to the PPG signals.
According to one embodiment of present invention, the driving chip has keyed end and PPG signal receiving ends, the control
Chip has the first output end and second output terminal, the keyed end of the first output end and the driving chip of the control chip
It is connected, to export the locking signal or the unlocking signal to the driving chip, the control by first output end
The second output terminal of coremaking piece is connected with the PPG signal receiving ends of the driving chip, to be exported by the second output terminal
The PPG signals are to the driving chip.
According to one embodiment of present invention, the first default power supply is powered for the driving chip, the driving chip packet
It includes：Driving circuit, the first end of the driving circuit are connected with the power switch tube, the second end of the driving circuit and institute
It states control chip to be connected, the driving circuit is used to drive the conducting of the power switch tube under the control of the control chip
And shutdown；Lock-in circuit, the first end of the lock-in circuit are connected with the third end of the driving circuit, the lock-in circuit
Second end is connected with the control chip, and the third end of the lock-in circuit is connected with the described first default power supply, the locking
Circuit is used to shield the described first default power supply so that the driving chip is locked or connect under the control of the control chip
Lead to the first default power supply so that the driving chip unlocks.
According to one embodiment of present invention, the lock-in circuit includes：First triode, the base of first triode
Pole is connected with the control chip, the emitter ground connection of first triode；First resistor, one end of the first resistor with
The collector of first triode is connected, and the other end of the first resistor is connected with the described first default power supply；Second electricity
Resistance, one end of the second resistance is connected with the collector of first triode；Second triode, second triode
Base stage is connected with the other end of the second resistance, the emitter ground connection of second triode, the collection of second triode
Electrode is connected with the driving circuit；3rd resistor, the collector phase of one end of the 3rd resistor and second triode
Even, the other end of the 3rd resistor is connected with the described first default power supply.
According to one embodiment of present invention, the driving circuit includes：4th resistance, one end of the 4th resistance with
The collector of second triode is connected；Third transistor, the collector of the third transistor and the 4th resistance
The other end is connected, and the base stage of the third transistor is connected with the control chip, the emitter ground connection of the third transistor；
4th triode and the 5th triode, the base stage of the 4th triode and the base stage of the 5th triode be connected and with the third
The collector of triode is connected, and the collector of the 4th triode is connected with the collector of second triode, and described the
The emitter of five triodes is grounded；One end of 5th resistance, the 5th resistance is connected simultaneously with the 4th transistor emitter
It is connected with the power switch tube, the other end of the 5th resistance is connected with the collector of the 5th triode.
According to one embodiment of present invention, the second default power supply is the control chip power supply, wherein described device is also
Including power module, the power module has the first power end and second source end, the first power end of the power module
It is connected with the driving chip, the second source end of the power module is connected with the control chip, and the power module is used
First power end is first passed through after electricity on such devices and provides the described first default power supply for the driving chip, then is led to
It crosses the second source end and provides the described second default power supply for the control chip.
In order to achieve the above objectives, another aspect of the present invention embodiment proposes a kind of electromagnetic heating system, including described
The control device of power switch tube.
The electromagnetic heating system proposed according to embodiments of the present invention, by the control device of the power switch tube,
It powers on failed i.e. voltage sequential and does not set up locked driving chip when completion, prevent power switch tube from being opened by mistake in powered on moment logical,
Prevent power switch tube from damaging, the reliability of hoisting power switching tube.
In order to achieve the above objectives, another aspect of the invention embodiment proposes a kind of control method of power switch tube, packet
Include following steps：Judge to control chip and power on whether succeed；If it is determined that the control chip powers on not successfully, then the control
Chip output locking signal controls the driving chip locking to driving chip, so that the driving chip drives in locking
The power switch tube shutdown.
The control method of the power switch tube proposed according to embodiments of the present invention judges to control chip and power on whether succeed,
If it is determined that the control chip powers on not successfully, then it is described to control to driving chip to export locking signal for the control chip
Driving chip locks, so that the driving chip drives the power switch tube to turn off in locking, to failed powering on
I.e. voltage sequential does not set up locked driving chip when completion, prevents power switch tube from being opened by mistake in powered on moment logical, prevents power from opening
Close pipe damage, the reliability of hoisting power switching tube.
According to one embodiment of present invention, if it is determined that the control chip powers on success, then the control chip is defeated
Go out unlocking signal to the driving chip and unlocked with controlling the driving chip, and exports PPG signals to the driving chip, with
The driving chip is set to drive the power switch tube on or off according to the PPG signals in unlock.
Description of the drawings
Fig. 1 is the block diagram of the control device of power switch tube according to the ... of the embodiment of the present invention；
Fig. 2 is the block diagram of the control device of power switch tube according to an embodiment of the invention；
Fig. 3 is the circuit diagram of the control device of power switch tube accord to a specific embodiment of that present invention；
Fig. 4 is the block diagram according to the control device of the power switch tube of another specific embodiment of the invention；
Fig. 5 is the flow chart of the control method of power switch tube according to the ... of the embodiment of the present invention；And
Fig. 6 is the circuit diagram of EMR electromagnetic resonance heating system in the related technology.
Reference numeral：
Driving chip 10, control chip 20 and power switch tube 30；
The first default default power vd D of power supply VCC and second；
Keyed end 11 and PPG signal receiving ends 12；First output end 21 and second output terminal 22；
Driving circuit 101 and lock-in circuit 102；
First triode Q1, first resistor R1, second resistance R2, the second triode Q3 and 3rd resistor R3；
4th resistance R4, third transistor Q3, the 4th triode Q4, the 5th triode Q5 and the 5th resistance R5；
6th resistance R6, the 7th resistance R7, voltage-stabiliser tube ZD1, power module 40, the first power end 41 and second source end
42。
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the electromagnetic heating system of the embodiment of the present invention, the control device of power switch tube and side described
Method.
Fig. 1 is the block diagram of the control device of power switch tube according to the ... of the embodiment of the present invention.As shown in Figure 1, should
The control device of power switch tube includes：Driving chip 10 and control chip 20.According to one embodiment of present invention, first is pre-
If power supply VCC such as 18V power supplys are powered for driving chip 10, chip 20 supplies the second default power vd D such as 5V power supplys in order to control
Electricity.In complete machine powering moment, 18V power supplys are first established, and are established after 5V power supplys.Before the foundation of 5V power supplys, chip the last 20 is controlled
Driving chip 10 processed is exported low level and is turned off with driving power switching tube 30.After the foundation of 5V power supplys, power-up initializing success, control
Coremaking piece 20 controls driving chip 10 and restores normal work.The control device energy of the power switch tube of the embodiment of the present invention as a result,
Enough driving chips locked when powering on failed i.e. voltage sequential and not setting up completion, prevent power switch tube from being opened by mistake in powered on moment
It is logical, prevent power switch tube from damaging.
Specifically, as shown in Figure 1, driving chip 10 is connected with power switch tube 30, driving chip 10 is used for driving power
The turn-on and turn-off of switching tube 30；Control chip 20 is connected with driving chip 10, and control chip 20 is for judging that itself is powered on
No success, and output locking signal is locked to driving chip 10 with controlling driving chip 10 when judging to power on failed, so that
The driving power switching tube 30 in locking of driving chip 10 turns off.
According to one embodiment of present invention, control chip 20 is additionally operable to export unlocking signal extremely when judging to power on successfully
Driving chip 10 exports PPG signals to driving chip 10, so that driving chip 10 is unlocking to control the unlock of driving chip 10
When according to 30 on or off of PPG signal driving powers switching tube.
According to one embodiment of present invention, as shown in Figure 1, there is driving chip 10 keyed end 11 and PPG signals to receive
End 12, control chip 20 have the first output end 21 and second output terminal 22, the first output end 21 and the driving of control chip 20
The keyed end 11 of chip 10 is connected, to export locking signal or unlocking signal to driving chip 10, control by the first output end 21
The second output terminal 22 of coremaking piece 20 is connected with the PPG signal receiving ends 12 of driving chip 10, with defeated by second output terminal 22
Go out PPG signals to driving chip 10.
It should be noted that after the power-up, if the first default power supply VCC is established, the second default power vd D is not set up,
Then judge to power on not successfully, i.e., voltage sequential does not set up completion；If the first default power supply VCC is established and the second default power supply
VDD is established, then judges to power on success, i.e., voltage sequential, which is established, completes.
Specifically, in embodiments of the present invention, after the power-up, control chip 20 first judges to power on whether succeed, if
It powers on not successfully, i.e., voltage sequential does not set up completion, then controls chip 20 and driving chip 10 is forced to lock, no matter control core at this time
The PPG signals that piece 20 exports are in which kind of state, 10 equal driving power switching tube 30 of driving chip shutdown, to power on wink
Between, before the voltage sequential foundation of 18V and 5V, it can prevent power switch tube 30 from opening by mistake logical.
If powering on success, i.e., voltage sequential, which is established, completes, then controls chip 20 and control the unlock of driving chip 10 so that drive
Dynamic chip 10 restores normal work, the PPG signal driving power switching tubes that driving chip 10 is exported according to control chip 20 at this time
30 on or off, such as 10 driving power switching tube 30 of driving chip turns off when PPG signals are in high level, at PPG signals
10 driving power switching tube 30 of driving chip is connected when low level.
That is, in powered on moment, driving chip 10 is locked, and constant output low level is with driving power switching tube 30
Shutdown, only when 5V sequential establish, power-up initializing success after, control chip 20 the first output end 21 export unlocking signal to
The keyed end 11 of driving chip 10 makes driving chip 10 unlock, and driving chip 10 restores normal work.
A specific embodiment according to the present invention, locking signal can be low level signal, and unlocking signal can be high level
Signal.
A specific embodiment according to the present invention, as shown in Fig. 2, the first default power supply VCC powers for driving chip 10,
Driving chip 10 includes：Driving circuit 101 and lock-in circuit 102.
Wherein, the first end with power switch tube 30 of driving circuit 101 is connected, the second end of driving circuit 101 and control
Chip 20 is connected, i.e. PPG signal receiving end 12 and control chip 20 of the second end of driving circuit 101 as driving chip 10
Second output terminal 22 is connected, and driving circuit 10 is used for the conducting of driving power switching tube 30 and pass under the control of control chip 20
It is disconnected；The first end of lock-in circuit 102 is connected with the third end of driving circuit 101, second end and the control chip of lock-in circuit 102
101 are connected, i.e. first output end of the second end of lock-in circuit 102 as the keyed end 11 and control chip 20 of driving chip 10
21 are connected, and the third end of lock-in circuit 102 is connected with the first default power supply VCC, and lock-in circuit 102 is used in control chip 20
Control the first default power supply VCC of lower shielding is so that driving chip 10 locks or connects the first default power supply VCC so that driving core
Piece 10 unlocks.
A specific embodiment according to the present invention, as shown in figure 3, lock-in circuit 102 includes：First triode Q1,
One resistance R1, second resistance R2, the second triode Q3 and 3rd resistor R3.
Wherein, the base stage of the first triode Q1 for example controls the first output end 21 of chip 20 with control chip 20 and is connected,
The emitter of first triode Q1 is grounded；One end of first resistor R1 is connected with the collector of the first triode Q1, first resistor
The other end of R1 is connected with the first default power supply VCC；One end of second resistance R2 is connected with the collector of the first triode Q1；The
The base stage of two triode Q2 is connected with the other end of second resistance R2, the emitter ground connection of the second triode Q2, the second triode
The collector of Q2 is connected with the third end of such as driving circuit 10 of driving circuit 10；One end of 3rd resistor R3 and the second triode
The collector of Q2 is connected, and the other end of 3rd resistor R3 is connected with the first default power supply VCC.
A specific embodiment according to the present invention, as shown in figure 3, driving circuit 10 includes：4th resistance R4, the three or three
Pole pipe Q3, the 4th triode Q4, the 5th triode Q5 and the 5th resistance R5.
Wherein, one end of the 4th resistance R4 is connected with the collector of the second triode Q2；The collector of third transistor Q3
It is connected with the other end of the 4th resistance R4, second that base stage and the control chip 20 of third transistor Q3 for example control chip 20 is defeated
Outlet 22 is connected, the emitter ground connection of third transistor Q3；The base stage phase of the base stage and the 5th triode Q5 of 4th triode Q4
It is connected even and with the collector of third transistor Q3, the collector phase of the collector of the 4th triode Q4 and the second triode Q2
Even, the emitter ground connection of the 5th triode Q5；One end of 5th resistance R5 is connected with the 4th triode Q4 emitters and and power
Switching tube 30 is connected, and the other end of the 5th resistance R5 is connected with the collector of the 5th triode Q5.
Specifically, after the power-up, control chip 20 first judges to power on whether succeed, if powered on not successfully, i.e. voltage
Sequential does not set up completion, then controls chip 20 and export locking signal such as low level to driving chip 10 by the first output end 21
Keyed end 11, the base stage of the low level output to the first triode Q1, so that the first triode Q1 shutdown, the two or three pole
Pipe Q3 conductings, the first default power supply VCC are cut off, and the first default power supply VCC can not be that driving circuit 101 is powered, driving chip
10 is locked, no matter controls chip 20 at this time and is in which kind of state, driving circuit by the PPG signals that second output terminal 22 exports
101 export low level, and power switch tube 30 turns off, thus in powered on moment, it, can before the voltage sequential foundation of 18V and 5V
Prevent power switch tube 30 from opening by mistake logical.
If powering on success, i.e., voltage sequential, which is established, completes, then controls chip 20 and export unlock by the first output end 21
Signal such as high level should be exported to level to the base stage of the first triode Q1, and then make to the keyed end 11 of driving chip 10
The first triode Q1 conductings, the second triode Q3 shutdowns are obtained, the first default power supply VCC is connected, and the first default power supply VCC can be
Driving circuit 101 is powered, and driving chip 10 unlocks, and driving chip 10 restores normal work at this time, and driving circuit 101 can be according to control
30 on or off of PPG signal driving powers switching tube that the second output terminal 22 of coremaking piece 20 exports, such as PPG signals are in
Driving circuit 101 exports low level when high level, and power switch tube 30 turns off, driving circuit 101 when PPG signals are in low level
High level is exported, power switch tube 30 is connected.
That is, powered on moment, the port status for controlling the first output end 21 of chip 20 is low level, the one or three pole
Pipe Q1 shutdowns, the second triode Q3 conductings, the first default power supply VCC are cut off, and no matter which kind of state the first output end 21 is in,
Driving circuit 101 exports low level.After the completion of controlling 20 power-up initializing of chip, the port status of the first output end 21 is
High level, the first triode Q1 conductings, the second triode Q3 shutdowns, driving circuit 101 work normally.
Further, a specific embodiment according to the present invention, as shown in figure 4, power switch tube 30 can be IGBT,
The grid of IGBT is connected with driving chip 101, and the emitter ground connection of IGBT, the collector of IGBT can be humorous with electromagnetic heating system
Shake circuit, controls chip 20 as a result, by controlling the break-make of IGBT and carries out resonance heating to control resonance circuit.
More specifically, as shown in figure 4, driving chip 101 can be connected by the 6th resistance R6 with the grid of IGBT, the 6th is electric
One end of resistance R6 is connected with the grid of IGBT, and the other end of the 6th resistance R6 is connected with driving chip 101；Also, the 6th resistance
One end be also connected with one end of the 7th resistance R7, the other end of the 7th resistance R7 ground connection；The cathode of voltage-stabiliser tube ZD1 and the 7th electricity
The one end for hindering R7 is connected, and the anode of voltage-stabiliser tube ZD1 is connected with the other end of the 7th resistance R7.
In addition, according to one embodiment of present invention, as shown in figure 4, chip 20 supplies the second default power vd D in order to control
Electricity, wherein device further includes power module 40, and power module 40 has the first power end 41 and second source end 42, power supply mould
First power end 41 of block 40 is connected with driving chip 10, and the second source end 42 of power module 40 is connected with control chip 20,
It is that driving chip 10 provides the first default power supply VCC that power module 40, which is used to first pass through the first power end 41 after the power is turned in device,
By second source end 42, chip 20 provides the second default power vd D in order to control again.
Specifically, external power supply can be converted to the first default default power supplys of power supply VCC and second by power module 40
VDD, when powering on, external power supply is first converted to the first default power supply VCC such as 18V, the first default power supply by power module 40
VCC is first established, then the first default power supply VCC is converted to the second default power vd D such as 5V, is built after the second default power vd D
It is vertical.
To sum up, the control device of the power switch tube proposed according to embodiments of the present invention judges itself by controlling chip
It powers on and whether succeeds, and output locking signal is locked to driving chip with controlling driving chip when judging to power on failed, with
So that driving chip driving power switching tube in locking is turned off, to, power on it is failed i.e. voltage sequential does not set up completion when
Locked driving chip, prevents power switch tube from being opened by mistake in powered on moment logical, prevents power switch tube from damaging, hoisting power switching tube
Reliability.
The embodiment of the present invention also proposed a kind of electromagnetic heating system, include the control of the power switch tube of above-described embodiment
Device.
The electromagnetic heating system proposed according to embodiments of the present invention, by power switch tube control device, powering on
I.e. voltage sequential does not set up locked driving chip when completion not successfully, prevents power switch tube from being opened by mistake in powered on moment logical, prevents
Power switch tube is damaged, the reliability of hoisting power switching tube.
The embodiment of the present invention has also been proposed a kind of control method of power switch tube.
Fig. 5 is the flow chart of the control method of power switch tube according to the ... of the embodiment of the present invention.As shown in figure 5, method packet
Include following steps：
S1：Judge to control chip and power on whether succeed.
S2：If it is determined that control chip powers on not successfully, then controls chip and export locking signal to driving chip to control
Driving chip locks, so that driving chip driving power switching tube in locking turns off.
According to one embodiment of present invention, if it is determined that control chip powers on success, then chip output unlock letter is controlled
Number to driving chip to control driving chip unlock, and PPG signals are exported to driving chip, so that driving chip root in unlock
According to PPG signal driving power switching tube on or off.
To sum up, the control method of the power switch tube proposed according to embodiments of the present invention, judge control chip power on whether
Success then controls chip and exports locking signal to driving chip to control driving core if it is determined that control chip powers on not successfully
Piece locks, so that driving chip driving power switching tube in locking turns off, to not built powering on failed i.e. voltage sequential
Locked driving chip, prevents power switch tube from being opened by mistake in powered on moment logical, prevents power switch tube from damaging when vertical completion, promotes work(
The reliability of rate switching tube.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of control device of power switch tube, which is characterized in that including：
Driving chip, the driving chip are connected with the power switch tube, and the driving chip is for driving the power to open
Close the turn-on and turn-off of pipe；
Control chip, the control chip is connected with the driving chip, the control chip be used to judge itself to power on whether
Success, and output locking signal controls the driving chip locking to the driving chip when judging to power on failed, with
The driving chip is set to drive the power switch tube to turn off in locking.
2. the control device of power switch tube according to claim 1, which is characterized in that the control chip is additionally operable to
Output unlocking signal controls the driving chip to the driving chip and unlocks when judgement powers on successfully, and exports PPG signals
To the driving chip, so that the driving chip drives the power switch tube to be connected in unlock according to the PPG signals
Or shutdown.
3. the control device of power switch tube according to claim 2, which is characterized in that the driving chip has locking
End and PPG signal receiving ends, the control chip have the first output end and second output terminal, the first of the control chip defeated
Outlet is connected with the keyed end of the driving chip, to export the locking signal or the unlock by first output end
Signal to the driving chip, the second output terminal of the control chip is connected with the PPG signal receiving ends of the driving chip,
To export the PPG signals to the driving chip by the second output terminal.
4. the control device of power switch tube according to claim 1, which is characterized in that the first default power supply is the drive
Dynamic chip power supply, the driving chip include：
Driving circuit, the first end of the driving circuit are connected with the power switch tube, the second end of the driving circuit with
The control chip is connected, and the driving circuit is used to drive leading for the power switch tube under the control of the control chip
Logical and shutdown；
Lock-in circuit, the first end of the lock-in circuit are connected with the third end of the driving circuit, and the of the lock-in circuit
Two ends are connected with the control chip, and the third end of the lock-in circuit is connected with the described first default power supply, the locking electricity
Road is used to shield the described first default power supply under the control of the control chip so that driving chip locking or connection
The first default power supply is so that the driving chip unlocks.
5. the control device of power switch tube according to claim 4, which is characterized in that the lock-in circuit includes：
First triode, the base stage of first triode are connected with the control chip, the emitter of first triode
Ground connection；
First resistor, one end of the first resistor are connected with the collector of first triode, the first resistor it is another
One end is connected with the described first default power supply；
Second resistance, one end of the second resistance are connected with the collector of first triode；
The base stage of second triode, second triode is connected with the other end of the second resistance, second triode
Emitter ground connection, the collector of second triode is connected with the driving circuit；
3rd resistor, one end of the 3rd resistor are connected with the collector of second triode, the 3rd resistor it is another
One end is connected with the described first default power supply.
6. the control device of power switch tube according to claim 5, which is characterized in that the driving circuit includes：
One end of 4th resistance, the 4th resistance is connected with the collector of second triode；
Third transistor, the collector of the third transistor are connected with the other end of the 4th resistance, the three or three pole
The base stage of pipe is connected with the control chip, the emitter ground connection of the third transistor；
4th triode and the 5th triode, the base stage of the 4th triode and the base stage of the 5th triode be connected and with it is described
The collector of third transistor is connected, and the collector of the 4th triode is connected with the collector of second triode, institute
State the emitter ground connection of the 5th triode；
One end of 5th resistance, the 5th resistance be connected with the 4th transistor emitter and with the power switch tube phase
Even, the other end of the 5th resistance is connected with the collector of the 5th triode.
7. the control device of power switch tube according to claim 4, which is characterized in that the second default power supply is the control
Chip power supply processed, wherein described device further includes power module, and the power module has the first power end and second source
End, the first power end of the power module is connected with the driving chip, the second source end of the power module with it is described
It controls chip to be connected, the power module is the driving core for first passing through first power end after electricity on such devices
Piece provides the first default power supply, then provides the described second default electricity by the second source end for the control chip
Source.
8. a kind of electromagnetic heating system, which is characterized in that include the power switch tube according to any one of claim 1-7
Control device.
9. a kind of control method of power switch tube, which is characterized in that include the following steps：
Judge to control chip and power on whether succeed；
If it is determined that the control chip powers on not successfully, then the control chip exports locking signal to driving chip to control
The driving chip locking, so that the driving chip drives the power switch tube to turn off in locking.
10. the control method of power switch tube according to claim 9, which is characterized in that if it is determined that the control core
Piece powers on success, then the control chip output unlocking signal controls the driving chip unlock to the driving chip, and
PPG signals are exported to the driving chip, so that the driving chip drives the power in unlock according to the PPG signals
Switching tube on or off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710158075.6A CN108631761A (en) | 2017-03-16 | 2017-03-16 | The control device and method of electromagnetic heating system and power switch tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710158075.6A CN108631761A (en) | 2017-03-16 | 2017-03-16 | The control device and method of electromagnetic heating system and power switch tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108631761A true CN108631761A (en) | 2018-10-09 |
Family
ID=63687557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710158075.6A Pending CN108631761A (en) | 2017-03-16 | 2017-03-16 | The control device and method of electromagnetic heating system and power switch tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108631761A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0427086A2 (en) * | 1989-11-08 | 1991-05-15 | National Semiconductor Corporation | Adaptive gate discharge circuit for power FETS |
| WO2008078869A1 (en) * | 2006-12-27 | 2008-07-03 | Woongjin Cuchen Co., Ltd. | Apparatus for controlling igbt selection of synchronous induction heating circuit |
| CN201663720U (en) * | 2009-12-31 | 2010-12-01 | 深圳和而泰智能控制股份有限公司 | Induction cooker controller with IGBT protective circuit and induction cooler |
| CN102045048A (en) * | 2009-10-22 | 2011-05-04 | 艾默生网络能源系统北美公司 | Driving signal regulation method and device of switching tube as well as switching power supply |
| CN102187557A (en) * | 2008-08-21 | 2011-09-14 | 三菱电机株式会社 | Driving circuit for power semiconductor element |
| CN102263544A (en) * | 2011-07-15 | 2011-11-30 | 武汉理工大学 | An IGBT drive circuit with power-on protection |
| CN202503442U (en) * | 2012-04-24 | 2012-10-24 | 温岭市三木机电有限公司 | switching power supply |
| CN103812480A (en) * | 2012-11-15 | 2014-05-21 | 美的集团股份有限公司 | IGBT (Insulated Gate Bipolar Transistor) driving device |
| CN104410394A (en) * | 2014-11-05 | 2015-03-11 | 南京航空航天大学 | Driving protection circuit of IGBT-based solid-state high-speed switch in microgrid system |
| CN205491255U (en) * | 2016-02-02 | 2016-08-17 | 佛山市顺德区美的电热电器制造有限公司 | Drive circuit of power switch pipe among electromagnetic heating device and electromagnetic heating device |
| CN205546010U (en) * | 2016-02-02 | 2016-08-31 | 佛山市顺德区美的电热电器制造有限公司 | Drive circuit of power switch pipe among electromagnetic heating device and electromagnetic heating device |
| CN106488600A (en) * | 2015-08-25 | 2017-03-08 | 比亚迪股份有限公司 | Electromagnetic heater and its heating control circuit and control method |
-
2017
- 2017-03-16 CN CN201710158075.6A patent/CN108631761A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0427086A2 (en) * | 1989-11-08 | 1991-05-15 | National Semiconductor Corporation | Adaptive gate discharge circuit for power FETS |
| WO2008078869A1 (en) * | 2006-12-27 | 2008-07-03 | Woongjin Cuchen Co., Ltd. | Apparatus for controlling igbt selection of synchronous induction heating circuit |
| CN102187557A (en) * | 2008-08-21 | 2011-09-14 | 三菱电机株式会社 | Driving circuit for power semiconductor element |
| CN102045048A (en) * | 2009-10-22 | 2011-05-04 | 艾默生网络能源系统北美公司 | Driving signal regulation method and device of switching tube as well as switching power supply |
| CN201663720U (en) * | 2009-12-31 | 2010-12-01 | 深圳和而泰智能控制股份有限公司 | Induction cooker controller with IGBT protective circuit and induction cooler |
| CN102263544A (en) * | 2011-07-15 | 2011-11-30 | 武汉理工大学 | An IGBT drive circuit with power-on protection |
| CN202503442U (en) * | 2012-04-24 | 2012-10-24 | 温岭市三木机电有限公司 | switching power supply |
| CN103812480A (en) * | 2012-11-15 | 2014-05-21 | 美的集团股份有限公司 | IGBT (Insulated Gate Bipolar Transistor) driving device |
| CN104410394A (en) * | 2014-11-05 | 2015-03-11 | 南京航空航天大学 | Driving protection circuit of IGBT-based solid-state high-speed switch in microgrid system |
| CN106488600A (en) * | 2015-08-25 | 2017-03-08 | 比亚迪股份有限公司 | Electromagnetic heater and its heating control circuit and control method |
| CN205491255U (en) * | 2016-02-02 | 2016-08-17 | 佛山市顺德区美的电热电器制造有限公司 | Drive circuit of power switch pipe among electromagnetic heating device and electromagnetic heating device |
| CN205546010U (en) * | 2016-02-02 | 2016-08-31 | 佛山市顺德区美的电热电器制造有限公司 | Drive circuit of power switch pipe among electromagnetic heating device and electromagnetic heating device |
Non-Patent Citations (2)
| Title |
|---|
| 王毅: "《功率MOSFET的失效分析及其驱动设计》", 《中国学术期刊（光盘版）电子杂志社》 * |
| 鲍安平主编: "《DSP处理器原理与应用》", 30 September 2009, 西安电子科技大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106357145B (en) | intelligent power module and air conditioner | |
| CN106410761B (en) | Current foldback circuit, control method and the air conditioner of intelligent power module | |
| CN109426328A (en) | Mainboard protection circuit | |
| CN113791927A (en) | Watchdog control circuit, electronic device and watchdog control method | |
| CN108631761A (en) | The control device and method of electromagnetic heating system and power switch tube | |
| CN209151038U (en) | The driver for brushless DC motor interlock circuit of anti-bridge arm direct pass | |
| CN109167592A (en) | Low-cost and high-performance switch tube driving circuit | |
| CN110061632A (en) | Intelligent power module and air conditioner | |
| CN105093029A (en) | Intensive electromagnetic lock state detection system | |
| CN108668392A (en) | The Drive Protecting Circuit and method of electromagnetic heating apparatus and its power switch tube | |
| CN108900076A (en) | Bridge driving circuit on inverter | |
| CN105116200B (en) | A kind of detection circuit of compatible switch amount and level amount | |
| CN105207513B (en) | SPM and air conditioner | |
| CN205353147U (en) | IC -card targets in place and detects power control circuit | |
| CN207530528U (en) | Inverter and inverter protection device | |
| CN107456161A (en) | Dust catcher and the power control circuit for dust catcher | |
| CN209134378U (en) | Low-cost and high-performance switch tube driving circuit | |
| CN106786461A (en) | A kind of voltage is counter to fill process circuit | |
| CN207625291U (en) | A kind of protection circuit for preventing control panel band to be electrically interposed in BLDC motors | |
| CN206993078U (en) | A kind of on-off circuit and the cooking apparatus with the on-off circuit | |
| CN106451392B (en) | The over-pressure safety device of IGBT pipe | |
| CN106130436A (en) | Motor driver and refrigerator | |
| CN206506284U (en) | A kind of compressor protective circuit and air conditioner | |
| CN106655970B (en) | The electric machine control system of washing machine and washing machine | |
| CN108319353A (en) | Power supply enables circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181009 |
|
| RJ01 | Rejection of invention patent application after publication |