Temperature maintaining device and method for integrated circuit chip

Abstract

The invention discloses a temperature maintaining device for an integrated circuit chip. The temperature maintaining device comprises anon-chip heating resistor which is composed of metal circuits ofthe chip, an on-chip temperature detecting circuit used for detecting the inner temperature of the chip, and a heating control circuit controlling switching on and switching off of heating current ofthe on-chip heating resistor based on the temperature value detected by the on-chip temperature detecting circuit to achieve chip temperature control in an on-chip mode. The invention further discloses a temperature maintaining method of the integrated circuit chip. Temperature maintaining of the chip can be achieved, especially, the temperature of the chip can be maintained at the normal workingtemperature when the chip works in the low temperature environment, and therefore temporary failure or permanent failure of the integrated circuit of the chip can be prevented. The cost and power consumption can be reduced, device accuracy requirements can be greatly reduced, reliability risk can be lowered, a manufacturing process window can be improved, the service life of the chip can be prolonged, and the error rate can be reduced.

Description

technical field [0001] The invention relates to the field of semiconductor integrated circuits, in particular to a temperature maintaining device for integrated circuit chips. The invention also relates to a method for maintaining the temperature of the integrated circuit chip. Background technique [0002] Due to the changeable application environment of integrated circuit chips, when a low temperature environment occurs, the integrated circuit characteristics of the chip will shift. In extreme cases, there may even be a temporary failure or an irreversible operation triggered by an internal error, resulting in permanent failure, resulting in user losses. [0003] There are several known methods to maintain the temperature of the integrated circuit of the chip, such as the method of installing a heater outside the chip, the method of covering the entire circuit board with an insulating layer or the method of heating the liquid circulation system, etc., to help the chip mai...

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Problems solved by technology

The above methods will increase the cost and power consumption

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