Method and device for protecting low-cost burn-proof board in a server

Abstract

The invention discloses a low-cost anti-burning board protection method and device in a server. The method includes the following steps: in the first step, the CPLD sends enabling information to a potentiometer; in the second step, the potentiometer outputs the enabling information after detecting the enabling information sent by the CPLD. The power supply is supplied to the equipment to be powered, and the equipment to be powered includes CPU, memory, peripheral hardware and hard disk; the third step, the power resistance at the ground feedback of the equipment to be powered monitors the circuit loop current; the fourth step, the differential current The operational amplifier collects the positive terminal current of the power resistor, and converts the collected current into a corresponding voltage; the fifth step, the voltage value is compared with the voltage comparator, and the voltage comparator transmits a signal to the CPLD; The invention can build a protection circuit with a pure analog operational amplifier circuit to effectively improve performance stability and safety.

Description

technical field [0001] The present invention relates to the field of hardware design, in particular to a low-cost burn-proof board protection method and device in a server. Background technique [0002] Servers are often multi-node, high-power CPU designs. The power consumption of a single CPU has increased from tens of watts in the past to hundreds of watts now. With high power consumption and often operating at low voltages, the operating current of the power supply on the server can easily require tens of amperes. In the design of the server, under the influence of unfavorable factors such as the structure of the server, the aging of the device or the high temperature of the working environment, there will be a short circuit in the power supply of the server part, and even the main board will be burned out, and the probability is not low. [0003] Therefore, in server design, in order to prevent short circuit and board burning, overcurrent protection ICs are often instal...

AI Technical Summary

Problems solved by technology

Each power supply uses a current detection IC for current detection. Because the cost of the current detection IC is too high, the cost of the entire link will undoubtedly be greatly increased, and it will take up a lot of PCB space. Since the current detection IC is often an integrated IC, and the volume Not small, plus many peripherals

Often need to take up more space on the PCB board