Microchip — PAC193x Family and MPLAB^® Analog Designer Tool

Microchip PAC1931/2/3/4 Single/Multi-Channel DC Power/Energy Monitor

Featuring real-time calibration with no input filters required

Microchip’s PAC193x series features one, two, three and four-channel devices enabling energy monitoring with integration periods from 1 ms up to 36 hours or longer.

The PAC193 family’s bus voltage, sense resistor voltage and accumulated proportional power are stored in registers for retrieval by the system master or Embedded Controller. A high-voltage multiplexer sequentially connects the inputs to a bus voltage monitor and current sense amplifier that feed high-resolution ADCs. Digital circuitry performs power calculations and energy accumulation.

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

The whole series uses real-time calibration to minimize offset and gain errors. No input filters are required for this device.

PAC193x Series Features

Applications