计划你的同步降压转换器通过PMBus接口
ASIC和FPGA的应用在现代数据中心的服务器和云计算系统需要高功率密度、高效率和快速的负载瞬态响应的负载点(POL)降压直流/直流转换器。输出电压和电流,随着故障的条件下,这些高度集成的,快速响应的电压转换器模块必须实时监测。同时,对于适当的热管理,这些设备的外部温度也必须实时监测。如果这些设计义务是不够的,以确保工程师的工作日,所需的输出电压变化需要编程,以尽量减少功耗。
为了满足这些需求,德克萨斯仪器增加了新的高电流,非隔离降压直流/直流转换器与PMBus(一种电源管理总线的缩写)接口迅速的家庭。同时提供高达30的输出电流和开关频率高,PMBus兼容的转换器,tps544b20和tps544c20使设计人员配置和监测其关键的设计参数,包括输出电压、电流和外部使用PMBus接口温度。同样,其中线性技术和Intersil,,也准备大电流,输出变量,降压PMBus兼容的数字直流/直流转换器。
PMBus essentials
Traditionally, in the analog world, DC/DC converters are programmed using external resistors and capacitors. However, today’s digital technology allows a designer to configure, monitor and control a power supply using signals via an interface like PMBus. It is an open-standard digital-power-management protocol managed by the System Management Interface Forum (SMIF), which is also credited with developing the SMBus and Smart Battery standards. The PMBus-command language enables communication between components of a power system. It comprises standard and device-specific commands. The specifications were first released in March 2005 and several revisions have been introduced since then.
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