Microchip Technology announced new two- and three-channel power monitoring devices that measure from 0 V to 32 V on a single chip, offering designers solutions that are easy to adopt and improve power measurement accuracy. The two-channel device is also the industry’s first with native 16-bit resolution, providing leading flexibility across a wide measurement range.
The PAC1932/33 devices include precisely what is needed to measure power on a single integrated circuit (IC), integrating multiple channels in a single package for applications such as point-of-sale systems, ATMs and building automation. This reduces costs for system designers while also consolidating their bill of materials, as the measurement of sub 1 V to 20 V voltage rails normally requires separate components to measure each rail efficiently. The devices’ ability to measure voltage rails under 1 V to as high as 32 V also relieves developers from having to reconfigure measurement resolution between low- and high-current load events.
As the industry’s only two-channel device with 16-bit power measurement, the PAC1932 can measure without host intervention for 17 minutes, relieving developers from adjusting voltage or current range to measure power and energy. The devices include two 16-bit analog-to-digital converters (ADCs) that can measure voltage and current simultaneously, enabling developers to extract a true power measurement.
The PAC1932/33 work in conjunction with Linux and Windows 10 software drivers. The ADM00805 register compatible evaluation board can be used to start development with a graphical user interface reporting Vsense, Vbus, power and accumulated power.
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