CN204119021U - The electromagnetism interference drive circuit of a kind of pair of inverter - Google Patents
The electromagnetism interference drive circuit of a kind of pair of inverter Download PDFInfo
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- CN204119021U CN204119021U CN201420683297.1U CN201420683297U CN204119021U CN 204119021 U CN204119021 U CN 204119021U CN 201420683297 U CN201420683297 U CN 201420683297U CN 204119021 U CN204119021 U CN 204119021U
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- 102100031024 CCR4-NOT transcription complex subunit 1 Human genes 0.000 claims abstract description 16
- 101000919674 Caenorhabditis elegans CCR4-NOT transcription complex subunit let-711 Proteins 0.000 claims abstract description 16
- 101000919672 Homo sapiens CCR4-NOT transcription complex subunit 1 Proteins 0.000 claims abstract description 16
- 102100031025 CCR4-NOT transcription complex subunit 2 Human genes 0.000 claims abstract description 15
- 101001092183 Drosophila melanogaster Regulator of gene activity Proteins 0.000 claims abstract description 15
- 101000919667 Homo sapiens CCR4-NOT transcription complex subunit 2 Proteins 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
Abstract
The utility model discloses the electromagnetism interference drive circuit of a kind of pair of inverter, comprise input and be connected to the first inverter (NOT1) on the I/O port of DSP, the output of the first inverter (NOT1) is connected with the input of the second inverter (NOT2), and the output of the second inverter (NOT2) is connected to switching component; The output of described first inverter (NOT1) and the second inverter (NOT2) is also connected to the first pull-up resistor (R2) and the second pull-up resistor (R3), and the first pull-up resistor (R2) is all connected with power supply (VCC) with the second pull-up resistor (R3).The utility model can play the effect of efficient anti-EMI filter interference, thus can reach the object preventing MOS or IGBT from by mistake turning on and off, and circuit structure is simple, cost is lower, the volume of needs is also less.
Description
Technical field
The utility model relates to a kind of anti-electromagnetic interference circuit, particularly a kind of electromagnetism interference drive circuit of the two inverters be applied in photovoltaic DC-to-AC converter.
Background technology
All can there be drive circuit photovoltaic DC-to-AC converter inside, usually for turning on and off of control switch components and parts.And the drive singal of drive circuit is sent by the I/O port of DSP, general drive circuit in the course of the work, requires to send drive singal according to the I/O port of DSP, accurately the turning on and off, to realize the function required by machine of control switch components and parts; But due to the inner high-low pressure of photovoltaic DC-to-AC converter or low-and high-frequency signal overlap, or in the very not rational situation of layout, the drive singal that the I/O port of DSP sends will be interfered, thus cause cannot be correct the turning on and off of control switch components and parts so that switching component damages or misleads.Although existing part electromagnetism interference drive circuit achieves the effect to anti-EMI filter electromagnetic interference, circuit is complicated, and the components and parts cost of use is higher, and required PCB volume is also relatively large.
Utility model content
The purpose of this utility model is, provides the electromagnetism interference drive circuit of a kind of pair of inverter.It can play the effect of efficient anti-EMI filter interference, thus can reach the object preventing switching component from by mistake turning on and off, and circuit structure is simple, cost is lower, the volume of needs is also less.
The technical solution of the utility model: the electromagnetism interference drive circuit of a kind of pair of inverter, be characterized in: comprise input and be connected to the first inverter on the I/O port of DSP, the output of the first inverter is connected with the input of the second inverter, and the output of the second inverter is connected to switching component; The output of described first inverter and the second inverter is also connected to the first pull-up resistor and the second pull-up resistor, and the first pull-up resistor is all connected with power supply with the second pull-up resistor.
In the electromagnetism interference drive circuit of above-mentioned two inverters, the input of described first inverter is provided with pull down resistor.Pull down resistor can prevent electrostatic from causing wafer damage, strengthens the antijamming capability of chip signal input.
Aforesaidly be applicable in the anti-interference drive circuit of high-performance of IGBT and MOS, chip signal output on the I/O port of described DSP, through the effect of the first inverter, the second inverter, the first pull-up resistor and the second pull-up resistor, is converted into power supply signal and drives.
The chip signal output (drive singal) that the I/O port of DSP sends by the first inverter makes logical inversion, when the first inverter input is high level (logical one), output is low level (logical zero), and when its input is low level, output is high level.The level that first inverter exports is done logical inversion by the second inverter again, and when the second inverter input is high level, output is low level, and when its input is low level, output is high level.
Being explained as follows of some terms in the utility model: DSP-digital signal processor, IO-I/O.
Compared with prior art, the utility model carries out twice level conversion by two inverters to the chip signal output that the I/O port of DSP exports, and coordinate two pull-up resistors the chip signal output be easily interfered to be converted to the power supply signal be not easily interfered, thus make drive circuit have high performance anti-interference function simultaneously.Experiment proves, in the same circumstances (identical drive signals, PCB loop area are mutually equal), the drive circuit of the application can make the interference in circuit reduce more than 90%, thus significantly improves the control precision of switch.And circuit structure of the present utility model is simple, components and parts use is less, cost is lower, operation stability is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described, but not as the foundation limited the utility model.
Embodiment.The electromagnetism interference drive circuit of a kind of pair of inverter, as shown in Figure 1: comprise input and be connected to the first inverter NOT1 on the I/O port of DSP, the output of the first inverter NOT1 is connected with the input of the second inverter NOT2, and the output of the second inverter NOT2 is connected to switching component; The output of described first inverter NOT1 and the second inverter NOT2 is also connected to the first pull-up resistor R2 and the second pull-up resistor R3, and the first pull-up resistor R2 is all connected with power supply VCC with the second pull-up resistor R3.The input of described first inverter NOT1 is provided with pull down resistor R1.Chip signal output on the I/O port of described DSP, through the effect of the first inverter NOT1, the second inverter NOT2, the first pull-up resistor R2 and the second pull-up resistor R3, is converted into power supply signal and drives.
Operation principle of the present utility model:
When switching component needs to open, drive singal sent out by the I/O port of DSP, makes the input of the first inverter NOT1 be high level, and then the first inverter NOT1 makes its output be low level (logical zero) as logical process.Low level enters the input of the second inverter NOT2, now the second inverter NOT2 makes its output be high level (logical one) as logical process, the output of inverter NOT2 is connected with pull-up resistor R3, then final what export is can the high level power supply signal of driving switch components and parts, thus makes switching component open-minded.The drive singal of the I/O port output of DSP, by the level conversion between two inverter, achieves the effect of electromagnetism interference.
When switching component needs to turn off, drive singal sent out by the I/O port of DSP, makes the input of the first inverter NOT1 be low level, and then the first inverter NOT1 makes its output be high level (logical one) as logical process.High level enters the input of the second inverter NOT2, and now the second inverter NOT2 makes its output be low level (logical zero) as logical process, then final output is low level, thus switching component is turned off.The I/O port drive singal of DSP, by the level conversion between two inverter, achieves the effect of electromagnetism interference.
Claims (2)
1. the electromagnetism interference drive circuit of a two inverter, it is characterized in that: comprise input and be connected to the first inverter (NOT1) on the I/O port of DSP, the output of the first inverter (NOT1) is connected with the input of the second inverter (NOT2), and the output of the second inverter (NOT2) is connected to switching component; The output of described first inverter (NOT1) and the second inverter (NOT2) is also connected to the first pull-up resistor (R2) and the second pull-up resistor (R3), and the first pull-up resistor (R2) is all connected with power supply (VCC) with the second pull-up resistor (R3).
2. the electromagnetism interference drive circuit of according to claim 1 pair of inverter, is characterized in that: the input of described first inverter (NOT1) is provided with pull down resistor (R1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420683297.1U CN204119021U (en) | 2014-11-14 | 2014-11-14 | The electromagnetism interference drive circuit of a kind of pair of inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420683297.1U CN204119021U (en) | 2014-11-14 | 2014-11-14 | The electromagnetism interference drive circuit of a kind of pair of inverter |
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| Publication Number | Publication Date |
|---|---|
| CN204119021U true CN204119021U (en) | 2015-01-21 |
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| CN201420683297.1U Active CN204119021U (en) | 2014-11-14 | 2014-11-14 | The electromagnetism interference drive circuit of a kind of pair of inverter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319989A (en) * | 2014-11-14 | 2015-01-28 | 浙江艾罗电源有限公司 | Anti-electromagnetic interference drive circuit with double inverters |
-
2014
- 2014-11-14 CN CN201420683297.1U patent/CN204119021U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319989A (en) * | 2014-11-14 | 2015-01-28 | 浙江艾罗电源有限公司 | Anti-electromagnetic interference drive circuit with double inverters |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Tonglu County, Hangzhou Economic Development Zone, Zhejiang province 311500 City Chu Road No. 288 Patentee after: Zhejiang elong network energy technology Co. Ltd Address before: Tonglu County, Hangzhou Economic Development Zone, Zhejiang province 311500 City Chu Road No. 288 Patentee before: SOLAX POWER CO., LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311500 No. 288 Shizhu Road, Tonglu County Economic Development Zone, Hangzhou City, Zhejiang Province Patentee after: Zhejiang arrow network energy technology Co.,Ltd. Address before: 311500 No. 288 Shizhu Road, Tonglu County Economic Development Zone, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG SOLAX NETWORK ENERGY TECHNOLOGY Co.,Ltd. |