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Protection circuit

A technology for protecting circuits and peripheral circuits, used in emergency protection circuit devices, circuit devices, and automatic disconnection emergency protection devices, etc.

Inactive Publication Date: 2013-04-10
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the temperature of these high-heat-generating electronic components rises rapidly, it often exceeds the temperature of most other components in the integrated circuit. Components have been burned due to their own high temperature

Method used

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Embodiment Construction

[0011] Below in conjunction with accompanying drawing and preferred embodiment the present invention is described in further detail:

[0012] see figure 1 As shown, the protection circuit of the present invention is used to prevent the peripheral circuit 90 of an existing integrated circuit from being burned due to excessive temperature. The first preferred embodiment of the protection circuit includes a detection circuit 10, a switch element 20 and a control chip 30. The detection circuit 10 is arranged next to the peripheral circuit 90 to detect whether the temperature of the peripheral circuit 90 exceeds a predetermined value. Set the temperature, and when the corresponding temperature exceeds the preset temperature, the switching element 20 triggers the control chip 30 to strengthen the heat dissipation effect of the existing heat dissipation device 70, so as to reduce the temperature of the peripheral circuit 90 below the preset temperature value, ensuring that the periph...

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PUM

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Abstract

Provided is a protection circuit for preventing temperature of a peripheral circuit of an integrated circuit from being too high. The protection circuit comprises a detecting circuit, a switching element and a control chip. The control chip is used for controlling an existing cooling device to dissipate heat of the peripheral circuit. The detecting circuit is connected with the control chip through the switching element. The detecting circuit and a thermistor arranged adjacent to the peripheral circuit are used for detecting temperature of the peripheral circuit. When the temperature of the peripheral circuit exceeding a presupposed temperature value is detected by the detecting circuit through the thermistor, the control chip is triggered by the detecting circuit through the switching element to strengthen the dissipation effect of the cooling device until the temperature of the peripheral circuit is lower than the presupposed temperature value and is detected by the thermistor. If the heat dissipating device running at full speed is still unable to enable the temperature of the peripheral circuit to fall below the presupposed temperature value, the control chip stops the peripheral circuit from working.

Description

technical field [0001] The invention relates to a protection circuit, in particular to an overheating protection circuit. Background technique [0002] At present, various integrated circuit (IC) components basically have the function of overheating protection to protect the integrated circuit itself, but in practical applications, the integrated circuit must also work with a number of peripheral circuits, and in the peripheral circuit design will be applied to various Electronic components with high heat generation, such as field effect transistors, etc. Because the temperature of these high-heat-generating electronic components rises rapidly, it often exceeds the temperature of most other components in the integrated circuit. Components have already burned due to their own high temperature. Contents of the invention [0003] In view of the above, it is necessary to provide a protection circuit that prevents the peripheral circuits of integrated circuits from overheatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H5/04
CPCG06F1/206
Inventor 付迎宾葛婷潘亚军
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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