CN201846052U - Device for eliminating silicon controlled effect of integrated circuit - Google Patents
Device for eliminating silicon controlled effect of integrated circuit Download PDFInfo
- Publication number
- CN201846052U CN201846052U CN2010201748854U CN201020174885U CN201846052U CN 201846052 U CN201846052 U CN 201846052U CN 2010201748854 U CN2010201748854 U CN 2010201748854U CN 201020174885 U CN201020174885 U CN 201020174885U CN 201846052 U CN201846052 U CN 201846052U
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- Prior art keywords
- integrated circuit
- power supply
- silicon controlled
- chip
- controlled effect
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Abstract
The utility model discloses a device for eliminating the silicon controlled effect of an integrated circuit. A power supply is connected with the integrated circuit to supply power. The device for eliminating the silicon controlled effect of the integrated circuit is characterized in that the device further comprises a switching tube and a control chip; the switching tube is connected in series between the power supply and the integrated circuit, and the control chip is connected with the integrated circuit to collect a level signal so as to control the on-off of the switching tube. The device for eliminating the silicon controlled effect of the integrated circuit has the following beneficial effects: when the silicon controlled effect occurs in the integrated circuit, the device can effectively and precisely cut off the power supply of the integrated circuit to protect the integrated circuit; meanwhile, the device is simple to implement, has low cost and brings convenience to production and use.
Description
Technical field
The utility model relates to the device of removing the integrated circuit controlled silicon effect, in particular utilizes the realization of watchdog chip functional characteristic to prevent the device that the controlled silicon effect of integrated circuit takes place.
Background technology
For the integrated circuit that adopts cmos circuit as elementary cell, based on the design feature of cmos circuit, than being easier to take place controlled silicon effect, its form of expression is that the operating current of integrated circuit becomes big suddenly, causes chip heating wherein, severe patient even burn.The unique method that solves this fault at present is exactly that the power supply that cuts off chip is timely protected chip, but the cut-out of the power supply of current chip realizes complexity, makes troubles to use.
The utility model content
At the deficiencies in the prior art, the utility model provides a kind of device that utilizes watchdog chip to realize the controlled silicon effect of solution integrated circuit, the power-off protection when realizing that controlled silicon effect appears in integrated circuit of its output signal control switch pipe.
To achieve these goals, the utility model by the following technical solutions
Remove the device of integrated circuit controlled silicon effect, connect the integrated circuit power supply by a power supply, it is characterized in that, also comprise a switching tube and control chip, the switching tube series connection is arranged between power supply and the integrated circuit, connects the break-make that integrated circuit is gathered level signal control switch pipe by control chip.
Described control chip can be watchdog chip, voltage checking chip.
The beneficial effects of the utility model are, when controlled silicon effect appears in integrated circuit, can be effectively and cut off of the protection of the power supply of integrated circuit accurately to integrated circuit, and to realize simply simultaneously, cost is low; Bring convenience for production and use.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model;
Fig. 2 is a fundamental diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
In conjunction with Fig. 1 and Fig. 2, remove the device of integrated circuit controlled silicon effect, one power supply connects the integrated circuit power supply, and switching tube series connection is arranged between power supply and the integrated circuit, connects the break-make that integrated circuit is gathered level signal control switch pipe by control chip.
The utility model utilizes watchdog chip to realize preventing the controlled silicon effect of microprocessor based on above-mentioned principle.Its operation principle is when more serious controlled silicon effect takes place microprocessor for some reason; usually can cause power supply VCC to descend; the general who has surrendered triggers the output pin output reset signal (the 7th pin output high level) of watchdog chip under the VCC; this reset signal will make switch triode Q1 be in cut-off state; thereby cut off the power supply of microprocessor, make it in time withdraw from controlled silicon effect.
When slighter controlled silicon effect takes place in microprocessor for some reason, tend to cause program fleet and lose and feed the dog function, so also can trigger the output pin output reset signal of watchdog chip, make switch triode Q1 be in cut-off state, thereby cut off the power supply of microprocessor, make it withdraw from controlled silicon effect.
In order to reduce cost, also can be (for example: MAX810) replace watchdog chip with three terminal voltage detection chip, and when realizing that power supply VCC descends, three terminal voltage detection chip output signals, make switch triode Q1 be in cut-off state, thereby cut off the power supply of microprocessor U1, make it in time withdraw from controlled silicon effect.
Claims (2)
1. remove the device of integrated circuit controlled silicon effect, connect the integrated circuit power supply by a power supply, it is characterized in that, also comprise a switching tube and control chip, the switching tube series connection is arranged between power supply and the integrated circuit, connects the break-make that integrated circuit is gathered level signal control switch pipe by control chip.
2. the device of releasing integrated circuit controlled silicon effect according to claim 1 is characterized in that comprising: described control chip can be watchdog chip, voltage checking chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201748854U CN201846052U (en) | 2010-04-29 | 2010-04-29 | Device for eliminating silicon controlled effect of integrated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201748854U CN201846052U (en) | 2010-04-29 | 2010-04-29 | Device for eliminating silicon controlled effect of integrated circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201846052U true CN201846052U (en) | 2011-05-25 |
Family
ID=44040928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201748854U Expired - Fee Related CN201846052U (en) | 2010-04-29 | 2010-04-29 | Device for eliminating silicon controlled effect of integrated circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201846052U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020833A (en) * | 2014-06-25 | 2014-09-03 | 苏州塔可盛电子科技有限公司 | Anti-interference singlechip reset circuit |
| CN105811776A (en) * | 2016-03-16 | 2016-07-27 | 阳光电源股份有限公司 | Switching power supply circuit |
-
2010
- 2010-04-29 CN CN2010201748854U patent/CN201846052U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104020833A (en) * | 2014-06-25 | 2014-09-03 | 苏州塔可盛电子科技有限公司 | Anti-interference singlechip reset circuit |
| CN105811776A (en) * | 2016-03-16 | 2016-07-27 | 阳光电源股份有限公司 | Switching power supply circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN WRT ELECTRICAL APPLIANCE COMPANY LIMITED Free format text: FORMER NAME: SHENZHEN HUIRUITONG ELECTRICAL APPLIANCE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong city of Shenzhen province Baoan District Guanlan Street GUI Feng Lu Fu Yuan Industrial Zone huiruitong Industrial Park 1 Building 2 layer 2 layer 2-3 Patentee after: Shenzhen WRT Intelligent Electrical Appliance Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Baoan District Guanlan Street GUI Feng Lu Fu Yuan Industrial Zone huiruitong Industrial Park 1 Building 2 layer 2 layer 2-3 Patentee before: ShenZhen WRT Electrical Appliance Co.,Ltd. |
|
| DD01 | Delivery of document by public notice |
Addressee: Shenzhen WRT Intelligent Electrical Appliance Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20150429 |
|
| EXPY | Termination of patent right or utility model |