Energy metering systems-on-chip

18 March 2015 Power Electronics / Power Management Analogue, Mixed Signal, LSI

Engineers can design energy meters using one common core that meets worldwide utility standards and saves development time with the ZON family of metering SoCs (system-on-chip) from Maxim Integrated Products.

Since electricity meter standards vary around the world and utility companies require different types of meters to meet customer and regional needs, it is no surprise that meter manufacturers need to be flexible and react quickly when the utilities’ requirements change.

Although metering IC designs today offer some flexibility by offering different memory capacities on the same chip, this does not allow for meter optimisation that meets evolving utility standards and models. ZON is a genuinely versatile solution because meter manufacturers can use one platform using the same firmware to optimise features and accommodate disparate customer needs.

The range is comprised of two series of ­products to meet any configuration: M (for mono-phase, or single phase) and P (for poly-phase, or three phase). They incorporate tailored options for low-end, mid-range and high-end meters, using a high-accuracy, 32-bit compute engine which is separate from the meter’s application microcontroller. This reduces the workload on the system core and lets customers port their application code from device to device to facilitate high IP reuse.

Onboard hardware features include a selection of peripherals, interfaces and memory capacities, as well as a temperature compensated real-time clock (RTC), touch sensors and IR encoder/decoder.

Available products in the range are the M1/M1L, M3 and P3/P3L, with more ZON family members planned for future introduction. Reference designs, evaluation kits and a certified DLMS software stack are also available.

For more information contact Arnold Perumal, Avnet Kopp, +27 (0)11 319 8600, [email protected], www.avnet.co.za

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