Hot plugging single board and method for measuring power of hot plugging single board

Abstract

The embodiment of the invention provides a hot plugging single board and a method for measuring power of the hot plugging single board. The method comprises the steps of: realizing a resistor which is required to be serially connected on a power supply circuit so as to realize the power measurement in the prior art by using a mode that an equivalent resistor of an MOS (Metal Oxide Semiconductor) field effect transistor on the hot plugging single board is in parallel connection with a known resistor. As the equivalent resistance of the MOS field effect transistor is regarded as to be at a constant value within a minute grade after the hot plugging single board enters the normal working state, and a current on the hot plugging single board is also regarded as to be at a constant value within the minute grade, the known resistor in parallel connection is controlled to be used or not used through a switch after the hot plugging single board enters the normal working state, and voltage values at two ends of the equivalent resistor of the MOS field effect transistor are measured respectively; the equivalent resistance of the MOS field effect transistor is determined within the minute grade, and furthermore the current on the hot plugging single board is determined within the minute grade, so that the power measurement on the hot plugging single board is realized.

Description

technical field [0001] The invention relates to the communication field, in particular to a hot-swappable single board and a power measurement method. Background technique [0002] With the introduction of the concept of environmental protection in various fields, more and more equipment purchasers have begun to require equipment provided by equipment manufacturers to measure power consumption in real time as a basis for environmental protection evaluation. The current and future data communication field presents high-bandwidth and multi-service requirements. For mid-to-high-end data communication equipment, it is necessary to use powerful large-capacity memory processors and large-capacity switching chips to achieve high bandwidth. Power consumption rises dramatically. Most mid-to-high-end devices use hot-swappable single boards. In the past, these hot-swappable single boards used 48V power supply, with high power and low current. However, from the perspective of cost, th...

AI Technical Summary

Problems solved by technology

However, if the parallel connection of N large resistors is used to generate small resistors, there are also problems in this method: the resistors are not ideal resistance resistors, there are differences in the resistance values ​​of each resistor, and the power borne by each resistor cannot be accurately W / N. Resistors bearing multiple powers may fail early. As long as one resistor fails, the maximum power consumption of the hot-swappable board remains unchanged, and the power consumption relationship of the resistors becomes (W / (n-1)). Other resistors will fail one by one, reducing hot-swap Reliability of removing boards

At the same time, due to the failure of the resistor, it will cause the unfailed resistor to overheat and burn, which will also cause a great safety hazard

Another problem is that as long as one resistor falls off due to some reason, such as resistance soldering or bumping, the other resistors will fall off one by one, which further reduces the reliability of the hot-swappable board.

Images