Surge current control module and method thereof

Abstract

The invention relates to a surge current control module, which is used in an integrated circuit chip. The integrated circuit chip comprises a plurality of function units and M corresponding power switches for controlling power supplies of the function units to switch on or off; the surge current control module comprises a programmable counter unit, a selector unit and an enable signal drive circuit module; a surge current control method comprises the steps that the M power switches are divided into N groups and are connected with N groups of enable signal drive circuits; the selector unit is provided with N groups of output ends, which output N groups of enable signal En to the N groups of enable signal drive circuits; the programmable counter unit controls the selector unit to output on-off signals to the N groups of power switches according to a certain preset time at intervals through setting count capacity, and switching on the M power switches which are divided into N groups by adopting time interval echelon so as to reduce the transient surge current. Therefore, the reliability of the chip can be improved, and the manufacturing cost of the chip is reduced.

Description

technical field [0001] The invention belongs to the technical field of digital circuit design, and relates to a surge current control module and a method thereof. Background technique [0002] In order to save power and prolong usage time, integrated circuit chips used in mobile devices use low power consumption design methods. In the low-power chip design method, turning off the power supply of idle modules is one of the main methods to realize chip power saving. [0003] In order to realize the shutdown of the module, it is usually necessary to add a power switch in the chip design. When the working state of the circuit module in the chip is idle, the power switch can be used to completely turn off the power supply, so as to achieve the purpose of saving power; when the function of the circuit module needs to be used again, the power supply of the module can be turned on again. [0004] see figure 1 , figure 1 Shown is a schematic diagram of a design circuit structure ...

AI Technical Summary

Problems solved by technology

If not designed properly, high current can cause electromigration effect, resulting in open circuit or short circuit of the circuit, making the chip function abnormally or completely invalid

Excessive transient current can cause the chip to burn directly, or even cause a fire, causing other equipment loss or personal injury

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