Voltage detection device, system and method

Abstract

The invention discloses a voltage detection device, a system and a method, relating to the field of electronics and capable of dynamically carrying out overvoltage or undervoltage detection on the voltage of a chip power supply in real time so as to improve the system reliability. The voltage detection device comprises a master control unit, an analog-to-digital conversion unit and a voltage comparison unit, wherein the master control unit is connected with a chip and is used for receiving the real-time VID (voltage identity) of the chip and converting the real-time VID in a chip acceptable working voltage range required by the real-time VID and then providing the converted real-time VID to the voltage comparison unit, the analog-to-digital conversion unit is connected with the chip power supply and is used for receiving a real voltage analog signal provided by the chip power supply, converting the real voltage analog signal into a real voltage value and then providing the converted real voltage value to the voltage comparison unit, the voltage comparison unit is connected with the master control unit and the analog-to-digital conversion unit respectively and is used for determining whether the real voltage value is beyond the chip acceptable working voltage range required by the real-time VID. The voltage detection device, the system and the method are used for the overvoltage/undervoltage detection of an automatic voltage adjustment power supply.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a voltage detection device, system and method. Background technique [0002] In the design of electronic equipment, multiple chips powered by the same power supply can be divided into fast processing (English full name is Fast process), normal processing (English full name is Normal process) and slow processing (English full name) due to different processing performance and business load. The full name is Slow process) three processing states. The speed and overall power consumption of different chips are different, so the voltage requirements of different chips must be met when performing single-board thermal design and power supply design. Therefore, the working voltage of the Fast process chip can be slightly lower to ensure stable and normal operation, and the working voltage of the Slow process chip can be slightly higher to ensure stable and normal operation. In order to preven...

AI Technical Summary

Problems solved by technology

However, factors such as the internal junction temperature of the chip or the manufacturing process will cause the actual VID of the chip to change, and accordingly, the acceptable operating voltage range of the chip will also change.

Comparing the actual voltage of the chip with the acceptable operating voltage range specified by the preset VID cannot truly reflect the overvoltage or undervoltage condition of the chip, which may cause the actual voltage of the chip to exceed the acceptable operating voltage range of the chip. , the system cannot detect the alarm, which affects the normal operation of the chip and lowers the reliability

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