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Crocus Technology announces release of high accuracy energy metering solution

31/05/2022 12:19 PM

KUALA LUMPUR, May 25 (Bernama) -- Crocus Technology Inc, developer of XtremeSense® TMR sensors, has announced the release of a high accuracy energy metering solution with isolated current sensing and digital output.

“The Crocus solution with the CT430 current sensor provides improved accuracy over existing magnetic sensor based designs,” said Tim Kaske, Crocus Vice President, Sales & Marketing. 

“With a validated design solution and a 12-week lead-time, OEM design customers are able to quickly integrate the energy metering solution into their end products.”

The solution is capable of measuring power, voltage and current while providing 1,820 VPK isolation in AC or DC applications. The result is a smaller and more efficient design without the use of large current transformers. 

According to a statement, the solution is ideal for a range of smart devices such as power supply monitors, electric vehicle chargers, household appliances, motor control and smart lighting.

The solution consists of the Crocus’ CT430 TMR isolated current sensor, Microchip’s ATtiny426 microcontroller, Printed Circuit Board (PCB), design files, microcontroller firmware, Bill of Materials (BoM) list, user guide and relevant support for designing a fully functional power monitoring solution.

The design solution has been verified to accurately read and quantise the voltage and current values prior to calculating the instantaneous and Root Mean Square (RMS) power components, active and reactive power, as well as power factor.

These power values are stored in registers which can be accessed by an external microcontroller via the SPI interface. By offloading the design effort of measuring and calculating power, the Crocus metering solution simplifies the addition of metering capabilities to any smart device.

The key to precise power measurements is the CT430 current sensor which provides better than one per cent current measurement accuracy over the -40°C to +125°C operating range.

It is available in a small 16-lead SOIC-Wide package, eliminating the need for bulky current transformers and allowing for more compact designs. 

More details at


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