[原创] Microchip PAC1934四路电源和能源监视解决方案

Microchip公司的PAC1932/3/4是两/三/四路电源和能源监视器,高压复接器依此连接输入到总线电压监视器和电流检测放大器,进而连接高分辨率ADC,数字电路进行功率计算和能量计算,宽动态范围内功率测量精度1%,能量测量采用28位功率结果片上累加,而48位功率累加寄存器用来记录在累加功率数据,用户可编程取样速率8,64,256和1024取养/秒,工作电压2.7V-5.5V,主要用在嵌入计算,网络,FPGA系统,汽车电子,低压/大功率-AI,GPU以及工业和Linux应用,笔记本和平板电脑,云,Linux和服务器计算.本文介绍了PAC1932/3/4主要特性,框图,以及PAC1934四路DC电源监视器评估板ADM00805主要特性,电路图,材料清单和PCB设计图.

The PAC1932/3/4 are two, three and four-channelpower and energy monitoring devices. A high-voltagemultiplexer sequentially connects the inputs to a busvoltage monitor and current sense amplifier that feedhigh-resolution ADCs. Digital circuitry performs power calculations and energy accumulation.

This enables energy monitoring with integrationperiods from 1 ms up to 36 hours or longer. Busvoltage, sense resistor voltage and accumulatedproportional power are stored in registers for retrievalby the system master or Embedded Controller.

The sampling rate and energy integration period can becontrolled over SMBus or I2C. Active channel selection,one-shot measurements and other controls are alsoconfigurable by SMBus or I2C.
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