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Microchip’s PAC1932/33 single power monitoring ICs measure power from 0V to 32V

Microchip’s new two- and three-channel power monitoring devices can measure from 0V to 32V on a single chip, offering designers solutions that are both easy to adopt and which improve power measurement accuracy.

The two-channel device is also the first with native 16-bit resolution, providing leading flexibility across a wide measurement range.

The PAC1932/33 devices integrate multiple channels in a single package for applications such as Point of Sale (POS) systems, ATMs and building automation. This reduces costs for system designers while also consolidating their Bill of Materials (BOM), as the measurement of sub 1V to 20V voltage rails normally require separate components to measure each rail efficiently. The devices’ ability to measure voltage rails under 1V to as high as 32V also means that developers do not have to reconfigure measurement resolution between low and high current load events.

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 Analogue-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.

Author
Neil Tyler

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