Low shutdown power consumption circuit of SOC chip and SOC chip

Abstract

According to the low-shutdown-power-consumption circuit of the SOC chip and the SOC chip provided by the invention, on the premise that the system is not connected with an external power supply, the isolation between an MCU system in the SOC chip and other related modules needing electricity and the external input power supply and the switching between the working state and the shutdown state are realized. The low shutdown power consumption circuit of the SOC chip can be integrated in the SOC chip and is especially suitable for application scenes such as battery application and miniaturization. In a system application scene that a battery is solidified in a system and only some tiny keys are allowed to serve as operation interfaces, the problem of low shutdown power consumption in a chip is solved.

Description

technical field [0001] The invention relates to the technical field of low shutdown power consumption circuits, in particular to a low shutdown power consumption circuit of an SOC chip and the SOC chip. Background technique [0002] SOC is the abbreviation of System on chip. The Chinese name is generally called a system-level chip, and it is also called a system on a chip. In a narrow sense, SOC is the chip integration of the core of an information system, which integrates key components of the system on a chip; in a broad sense, it is a micro-miniature system. Academic circles at home and abroad generally integrate microprocessors, pre-designed circuit function modules and memory used in ASIC or FPGA into a single chip called SOC. And many functions will be integrated in the SOC chip, and most of them have one or more MCU cores to realize the control function. [0003] The SOC chip itself is a system, so the power consumption of the SOC chip is a very important parameter ...

AI Technical Summary

Problems solved by technology

But even if the internal modules are not working, there will always be some residual current branches causing the whole system to still have a lot of power loss

And as the process becomes more and more advanced, the process node is getting smaller and smaller, and the number of devices is increasing, the leakage has become an important source of residual current consumption. For example, at 0.18um and above, the main consideration is that the MOSFET switch is turned off. Leakage current, below 0.18um, due to the influence of tunneling effect, the leakage current at the Gate side of MOSFET also begins to be significant, which is becoming more and more a problem

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