资 源 简 介
利用PMBus注意电源问题
工业4的转移和物联网产业（IIoT）看到的制造控制系统的各个元素采取更大程度的地方自治，允许实时适应市场需求。在这个环境中保持吞吐量将取决于这些本地控制器表现出高度的可靠性。识别故障条件的能力是保持高可用性和连续生产的关键，这延伸到电源，特别是作为功率转换器往往遭受较高的故障率在该领域，因为高应力的组件。先进的诊断和热插拔电源转换器在运行系统上的能力都是重要的，以维持正常运行时间。
The PMbus not only provides a means to monitor failures and the signs of problems in power converters and related circuitry but also to provide a standard interface for hot-swap control. First published as a standard in March 2005， the PMbus is derived from the System Management Bus （SMbus） that was developed to control processor boards in data-center servers.
Both SMbus and PMbus are based on the same the two-wire I2C bus but PMbus adds an alert line that allows any node on the bus to interrupt the system master. The use of the alert line reduces the need for that master to conTInuously poll slaves for updates. This is an important characterisTIc as it helps reduce the software overhead on the microcontrollers used in high-reliability systems.
