[原创] Microchip PAC1934四路直流电源和能源监测方案

Microchip公司的PAC1934是带累加器的四路直流电源/能源监测器,具有总线电压监视器和电流检测放大器,直接输入到高分辨率ADC,数字电流进行功率计算和能量累加.监测周期从1ms到36个小时或更长.电源测量精度1%,24位累加器计数,2.7-5.5V工作电压,主要用在笔记本和平板电脑,网络设备,汽车电子,云,Linux和服务器计算和工业与Linux应用.本文介绍了PAC1934主要特性,框图,系统框图和功能框图,以及PAC1934评估板ADM00805主要特性,电路图,材料清单和PCB设计图.

The PAC1934 device is a four-channel energy monitor,with bus voltage monitor and current sense amplifiers thatfeed high-resolution ADCs. Digital circuitry performs power calculations and energy accumulation.

This enables energy monitoring with integration periodsfrom 1 ms up to 36 hours or longer. Bus voltage, senseresistor voltage and accumulated proportional power arestored in registers for retrieval by the system master orEmbedded Controller.

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

The PAC1934 uses real time calibration to minimize offsetand gain errors. No input filters are required for this device.

PAC1934主要特性:

• High-Side Current Monitor..

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