Single system monitor saves space and increases accuracy, claims Maxim

Replacing five components, the MAX22530 is the latest addition to the MAXSafe Technology family by Maxim Integrated. The isolated, field side, self-powered 12-bit system monitor shrinks solution size by 40 per cent and tightens accuracy by a factor of 50, says the company, improving system uptime in automated distribution and sub-station applications.

The MAX22530 has four channels and integrates five components into a single IC. It is intended to be used by automation system designers to save board space, increase channel density and improve the accuracy of monitoring voltage and current inputs and enable operators to monitor the system with finer precision and reduced system downtimes.

The MAX22530 delivers a 50x improvement in monitoring measurement accuracy (from ±50 per cent to just ± one per cent) compared to the standard linear optocoupler isolation solutions made from discretes. It uses Maxim’s integrated isolation technology that combines a 12-bit ADC, a DC/DC converter, user-settable threshold detection levels and chip-level diagnostic capabilities. This combination enables 50x greater stability in current transfer ratio performance to achieve a stable sense resistor voltage, says Maxim.

The measurement accuracy across four voltage and current inputs means that the MAX22530 allows a 250mm² solution size, which is 40 per cent smaller that the 420mm² size for the closest competitive discrete solution

The MAX22530 joins the existing MAXSafe products which combine integrated and isolated micropower DC/DC converters and communications lines. These are used to power up field circuits that are isolated from the control-side power source while simplifying diagnostics in signal monitoring applications.

The MAX22530 is available from Maxim Integrated’s website now. There is also the MAX22530EVKIT# evaluation kit.

Maxim Integrated has a broad portfolio of semiconductors, tools and support, to deliver essential analogue solutions including efficient power, precision measurement, reliable connectivity and robust protection along with intelligent processing. Its customer base includes designers in application areas such as automotive, communications, consumer, data centre, healthcare, industrial and the IoT.

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