CN205430196U - Switch element's drive arrangement - Google Patents
Switch element's drive arrangement Download PDFInfo
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- CN205430196U CN205430196U CN201620218199.XU CN201620218199U CN205430196U CN 205430196 U CN205430196 U CN 205430196U CN 201620218199 U CN201620218199 U CN 201620218199U CN 205430196 U CN205430196 U CN 205430196U
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Abstract
Switch element's drive arrangement can prevent short -circuit test middle and high voltage side switch element's malfunction. The drive arrangement (3a) of this embodiment is switch element's drive arrangement, and it makes high -pressure side switch element switch on / end, has: pulse generating circuit (31), it is according to following the command signal (S1) who commander equipment (4) exports, and the low low pressure of formation voltage level switches on pulse signal (S2) and pulse signal (S3) is ended to low pressure, level shifting circuit (32), it switches on pulse signal and low pressure with low pressure and converts high pressure that voltage level is high into by pulse signal and switch on pulse signal (S4) and end pulse signal (S5) with the high pressure, logic circuit (33), it switches on pulse signal's rising and generates the output signal of high level according to the high pressure, ends pulse signal's voltage level and generates the output signal of low level according to the high pressure, and output terminal (HO), its control terminal of exporting output signal high -pressure side switch element.
Description
Technical field
This utility model relates to the driving means that switch element carries out conduction and cut-off driving, in particular to the driving means of the misoperation preventing switching noise from causing.
Background technology
Patent document 1 discloses that a kind of conventional driving means that the switch element of high-pressure side and low-pressure side is driven.Conventional driving means has: the signal processing circuit producing the high pulse signal of voltage level according to input signal, the filter circuit making pulse delay signal and the SR D-flip flop via filter circuit return pulse signal.Switch element is driven after relieving the imbalance state caused by the conduction and cut-off of switch element by conventional driving means, it is possible to prevent the misoperation of switch element.
[patent documentation 1]: CN101304209B
But, conventional driving means does not accounts for the misoperation of short-circuit test breaker in middle element.Short-circuit test refers to for confirming the test of the protection act of driving means under the short-circuit condition that high side switching elements and low-side switch element are both turned on.Driving means is designed to: after short-circuit condition being detected, makes the instantaneous cut-off of high side switching elements, and keeps this state certain period interior.But, the bursts of error (noise signal) that variation in voltage during high side switching elements cut-off is caused may cause high side switching elements the most again to turn on after temporarily cut-off.
Utility model content
This utility model provides the driving means of switch element, it is possible to prevent the misoperation of short-circuit test mesohigh side switch element.
This utility model is the driving means of a kind of switch element, it at least makes high side switching elements conduction and cut-off, this driving means is characterised by, have: pulse generation circuit, it generates the low low pressure conduction pulses signal of voltage level and low pressure disabling pulse signal according to the command signal from command device output；Level shifting circuit, described low pressure conduction pulses signal and low pressure disabling pulse signal are converted to the high high voltage conduction pulse signal of voltage level and high-pressure stop pulse signal by it；Logic circuit, it generates the output signal of high level according to the rising of described high voltage conduction pulse signal, and generates low level output signal according to the voltage level of described high-pressure stop pulse signal；And lead-out terminal, described output signal is exported the control terminal of described high side switching elements by it.
According to this utility model, using the teaching of the invention it is possible to provide be possible to prevent the driving means of the switch element of the misoperation of short-circuit test mesohigh side switch element.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the structure of the driving means of the switch element representing embodiment of the present utility model.
Fig. 2 is the circuit diagram of the structure of the driving means of the switch element representing variation of the present utility model.
Label declaration
1: high side switching elements；2: low-side switch element；3a, 3b: driving means；4: command device；31: pulse generation circuit；32: level shifting circuit；33: logic circuit；34,35: filter circuit；36,37:NOT (non-) circuit；38: low-pressure side pulse generation circuit.
Detailed description of the invention
Then, it is explained with reference to embodiment of the present utility model.In the record of following accompanying drawing, the label same or like to same or like part mark.It should, however, be noted that accompanying drawing is the most schematically.It addition, embodiment shown below is to illustrate the device for making the technological thought of this utility model embody or method, the embodiment of this utility model does not make the structure of component parts, configuration etc. be defined to the example below.The embodiment of this utility model can apply various change in the range of being claimed.
Fig. 1 is the circuit diagram of the structure of the driving means of the switch element representing embodiment of the present utility model.Driving means 3a of the present embodiment is the driving means of the switch element making high side switching elements 1 conduction and cut-off, this driving means 3a has: pulse generation circuit 31, it generates voltage level low low pressure conduction pulses signal S2 and low pressure disabling pulse signal S3 according to the command signal S1 from command device 4 output；Level shifting circuit 32, low pressure conduction pulses signal S2 and low pressure disabling pulse signal S3 is converted to voltage level high high voltage conduction pulse signal S4 and high-pressure stop pulse signal S5 by it；Logic circuit 33, it generates output signal S6 of high level according to the rising of high voltage conduction pulse signal S4, and generates low level output signal S6 according to the voltage level of high-pressure stop pulse signal S5；And lead-out terminal HO, output signal S6 is exported the control terminal of high side switching elements 1 by it.
The high side switching elements 1 of present embodiment is made up of known MOSFET.The drain terminal of high side switching elements 1 is connected with one end of DC source 10.The source terminal of high side switching elements 1 via load 20 and the other end of DC source 10 () be connected.The control terminal of high side switching elements 1 is connected with the terminal HO of driving means 3a.One end of capacitor 30 is connected with the terminal VB of driving means 3a.The other end of capacitor 30 is connected with the terminal HS of driving means 3a and the source terminal of high side switching elements 1.Capacitor 30 is known boottrap capacitor, relative to terminal HS to the high signal of terminal VB output-voltage levels.
Pulse generation circuit 31, via terminal HIN, is connected with the command device 4 of the outside being arranged at driving means 3a.Level shifting circuit 32 has the conducting side series circuit being made up of resistance 321 and FET323 and the cut-off side series circuit being made up of resistance 322 and FET324.One end of resistance 321 is connected via one end of terminal VB with capacitor 30 with one end of resistance 322.The control terminal of FET323 is connected with pulse generation circuit 31 with the control terminal of FET324.The drain terminal of FET323 is connected with the other end of resistance 321.The drain terminal of FET324 is connected with the other end of resistance 322.
The logic circuit 33 of the present embodiment is triggered circuit by D type and constitutes.Logic circuit 33 has clock terminal CK, reseting terminal R, input terminal D and lead-out terminal Q.Clock terminal CK, via filter circuit 34 and NOT circuit 36, is connected to the junction point between resistance 321 and FET323.Reseting terminal R, via filter circuit 35 and NOT circuit 37, is connected to the junction point between resistance 322 and FET324.Input terminal D, via terminal VB, is connected with one end of capacitor 30.Lead-out terminal Q, via terminal HO, is connected with the control terminal of high side switching elements 1.It addition, logic circuit 30 is via terminal VB and terminal HS, it is connected with capacitor 30, receives the both end voltage of capacitor 30 and work.It addition, logic circuit 33 is not limited to D type triggers circuit, it is also possible to the known gate of combination is constituted.
The pulse generation circuit 31 command signal S1 process to exporting from command device 4, generates low pressure conduction pulses signal S2 and low pressure disabling pulse signal S3, and above-mentioned signal is respectively outputted to FET323 and FET324.FET323 and FET324 is driven to conduction and cut-off according to low pressure conduction pulses signal S2 and low pressure disabling pulse signal S3 respectively.High voltage conduction pulse signal S4, via NOT circuit 36 and filter circuit 34, is exported the clock terminal CK of logic circuit 33 by level shifting circuit 32.High-pressure stop pulse signal S5, via NOT circuit 37 and filter circuit 35, is exported the reseting terminal R of logic circuit 33 by level shifting circuit 32.That is, logic circuit 33 receives and has the logic level identical from each low voltage pulse signal and the high-voltage pulse signal of different voltage levels.
Logic circuit 33 is switched to the rising edge synch ground of high level with being input to the logic level of signal of clock terminal CK from low level, from lead-out terminal Q output logic level i.e. output signal S6 of the voltage level of terminal VB identical with the signal being input to input terminal D.It addition, logic circuit 33 is when being input to the logic level of signal of reseting terminal R and being high level, it is low level i.e. output signal S6 of the voltage level of terminal HS from lead-out terminal Q output logic level.By said structure, the logic level of the signal being input to input terminal D is always high level.Therefore, the logic level of output signal S6 is set to high level by the rising synchronous ground of logic circuit 33 and high voltage conduction pulse signal S4, and according to the logic level of high-pressure stop pulse signal S5, the logic level of output signal S6 is set to low level.
The pulsewidth of the bursts of error that the switch motion when peak pulse duration of the bursts of error (noise signal) in short-circuit test is usual causes is big, therefore, the filter circuit constituting conventional driving means sometimes cannot be utilized to remove.But, driving means 3a of the present embodiment is configured to: with the rising synchronous ground of high voltage conduction pulse signal S4, the logic level of output signal S6 is set as high level.Therefore, it is possible to provide the driving means of the switch element of the misoperation being possible to prevent short-circuit test mesohigh side switch element.
Fig. 2 is the circuit diagram of the structure of driving means 3b of the switch element representing variation of the present utility model.Driving means 3b of this variation is configured to drive low-side switch element 2, and this point is different from above-mentioned driving means 3a.That is, driving means 3b has low-pressure side pulse generation circuit 38, and this low-pressure side pulse generation circuit 38 is connected with command device 4 via terminal LIN, and is connected via the control terminal of lead-out terminal LO with low-side switch element 2.Driving means 3b so constituted is obtained in that the action effect identical with driving means 3a.
As above, utilize embodiment that this utility model is recorded, it is understood that constitute the discussion of a part disclosed above and this utility model is not limited by accompanying drawing.To those skilled in the art, it is possible to obtain various alternative embodiment, embodiment and application technology from the disclosure, this is apparent from.That is, this utility model includes the various embodiments etc. do not recorded at this certainly.Therefore, technical scope of the present utility model is only limited by the specific item of utility model involved by the suitable scope being claimed obtained based on described above.
Claims (5)
1. a driving means for switch element, it at least makes high side switching elements conduction and cut-off, and this driving means is characterised by having:
Pulse generation circuit, it generates the low low pressure conduction pulses signal of voltage level and low pressure disabling pulse signal according to the command signal from command device output；
Level shifting circuit, described low pressure conduction pulses signal and low pressure disabling pulse signal are converted to the high high voltage conduction pulse signal of voltage level and high-pressure stop pulse signal by it；
Logic circuit, it generates the output signal of high level according to the rising of described high voltage conduction pulse signal, and generates low level output signal according to the voltage level of described high-pressure stop pulse signal；And
Lead-out terminal, described output signal is exported the control terminal of described high side switching elements by it.
The driving means of switch element the most according to claim 1, it is characterised in that
Described logic circuit is that D type triggers circuit.
The driving means of switch element the most according to claim 2, it is characterised in that
Described high voltage conduction pulse signal is imported into described D type and triggers the clock terminal of circuit.
The driving means of switch element the most according to claim 3, it is characterised in that
Described high-pressure stop pulse signal is imported into described D type and triggers the reseting terminal of circuit.
The driving means of switch element the most according to claim 4, it is characterised in that
Described D type triggers the input terminal of circuit and is transfused to the signal that logic level is high level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620218199.XU CN205430196U (en) | 2016-03-21 | 2016-03-21 | Switch element's drive arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620218199.XU CN205430196U (en) | 2016-03-21 | 2016-03-21 | Switch element's drive arrangement |
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| CN205430196U true CN205430196U (en) | 2016-08-03 |
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| CN201620218199.XU Active CN205430196U (en) | 2016-03-21 | 2016-03-21 | Switch element's drive arrangement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798052A (en) * | 2018-08-01 | 2020-02-14 | 三垦电气株式会社 | Control device and method for power equipment |
| CN112072896A (en) * | 2019-06-11 | 2020-12-11 | 三垦电气株式会社 | Control device and method for power equipment |
| CN112994667A (en) * | 2019-12-12 | 2021-06-18 | 三垦电气株式会社 | Control device and method for power equipment |
-
2016
- 2016-03-21 CN CN201620218199.XU patent/CN205430196U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798052A (en) * | 2018-08-01 | 2020-02-14 | 三垦电气株式会社 | Control device and method for power equipment |
| CN110798052B (en) * | 2018-08-01 | 2022-02-25 | 三垦电气株式会社 | Control device and method for power equipment |
| CN112072896A (en) * | 2019-06-11 | 2020-12-11 | 三垦电气株式会社 | Control device and method for power equipment |
| CN112072896B (en) * | 2019-06-11 | 2024-04-26 | 三垦电气株式会社 | Control device and method for power equipment |
| CN112994667A (en) * | 2019-12-12 | 2021-06-18 | 三垦电气株式会社 | Control device and method for power equipment |
| CN112994667B (en) * | 2019-12-12 | 2024-05-10 | 三垦电气株式会社 | Control device and method for power equipment |
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