Maxim MAX34427 SMBUS双路高动态范围储能器解决方案

Maxim公司的MAX34427是SMBUS双路高动态范围储能器,具有很宽的动态范围(20000:1),能精确测量这样系统的功率.器件配置和监测了标准的I2C/SMBus串行接口.单向电流传感器提供精确高边工作和低的满刻度检测电压.器件自动收集电流检测和电压样品,然后乘法这些数值,以得到功率值,再累积.根据主机的指令,器件传输累积的功率样品,以及累加数,由主机存入到寄存器中.这种转移不会丢失一个样品,使得主机不仅能在实时而且能在任何时候检索到数据.器件具有自主运算,从而最大限度降低处理器的间接费用.每路56位功率蓄能器在2048取样/秒捕获2.27小时的数据.每路有14位电压寄存器,高度集成的解决方案最大限度降低元件数量,PCB面积和BOM成本, 5μV 到100mV电流检测电压和电流共模范围0.5V到24V,16个可编I2C地址. I2C/SMBus接口具有总线暂停功能,温度范围-40°C到 +85°C,采用小型2.24mm x 1.91mm占位面积12凸WLP封装和12引脚3mm x 3mm占位面积的TDFN封装.主要用在平板电脑,超笔记本,工作站,服务器以及VR/AR耳机.本文介绍了MAX34427主要优势和特性,简化矿图和框图,以及评估板MAX34427 Shield EVK主要特性,电路图,材料清单和PCB设计图.

 The MAX34427 is a specialized current, voltage, and power monitor used to determine power consumption of systems. The device has a very wide dynamic range (20,000:1) that allows for the accurate measurement of power in such systems. The device is configured and monitored with a standard I2C/SMBus serial interface. The unidirectional current sensor offers precision high-side operation with a low full-scale sense voltage. The device automatically collects the current-sense and voltage samples and then multiplies those values to obtain a power value it then accumulates. Upon a command from the host, the device transfers the accumulated power samples, as well as the accumulation count, to a set of registers accessible by the host. This transfer occurs without missing a sample and allows the host to retrieve the data not only in real-time, but at any time interval.

MAX34427主要优势和特性:

• Enables Code Optimization to Minimize Power Consumption

• Two Power Monitors with Wide 86dB ...