TMR Sensor Reference Design with Digital Output Simplifies Implementation
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 quantize 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 1% 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. The CT430 solution can also be customized with different bus interfaces such as I2C, SENT and CAN. By leveraging the solution, manufacturers and designers can quickly develop accurate and compact power monitoring capabilities for their products. See the figure below for the system diagram of the Crocus reference design kit for power measurements.
“Being able to accurately measure power and communicate this data within a system continues to be a challenge for designers.” said Tim Kaske Crocus Vice President, Sales & Marketing. “The Crocus solution with the CT430 current sensor provides improved accuracy over existing magnetic sensor based designs. 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.”
Design files required for manufacturing or customizing this power meter PCB are available for download.
https://crocus-technology.com/wp-content/uploads/2022/05/Power-Meter-v0.1.zip.
Also available for download is the AN136 CT430 Power Measurement Module user guide,
Availability and Pricing
For more information availability and pricing please visit
email: sales.europe@macnica.com.
About Crocus Technology
Crocus Technology develops and manufactures state-of-the-art magnetic sensors based on its patented XtremeSense® TMR sensor technology. Crocus’ disruptive magnetic sensor technology enables the highest sensitivity, the lowest power consumption and smallest size over a wide temperature range. Crocus is headquartered in Milpitas, California.
For more information, please visit https://www.crocus-technology.com.
About Macnica ATD Europe GmbH, (former Macnica GmbH)
Macnica’s ATD Europe GmbH, (former Macnica GmbH), was originally established in the UK in 2006, and moved to Germany in July 2008, to increase efficacy of its service for European customers.
By it’s acquisition of the Munich based company Scantec Mikroelektronik in 2014 Macnica Europe formed a powerful semiconductor distribution with headquarter in Ingolstadt and offices in Munich, Regensburg, Milton Keynes (UK) and Warsaw of-fering an attractive and competitive portfolio of highly sophisticated devices.
Macnica provides end to end support from design-in to production through its global service network to its customers, regardless of the final destination of the product shipment to customers‘ manufacturing locations.
About Macnica ATD Europe S.A.S.
Founded in 1990 as ATD Electronique, Macnica ATD Europe headquarter offers in-novative components dedicated to imaging applications for the European market. Its product portfolio includes: image sensors (CCD, CMOS, InGaAs, Thermal etc.), op-tics, interface circuits, FPGA & IPs, imaging processors, cables and OLED micro-displays.
It also covers development tools and design services enabling fast and efficient reali-zation of new high-performance camera systems for markets such as machine vision, medical, life sciences, surveillance, automotive and others. After the acquisition of the company by Macnica Inc. as of October 1, 2020 the company operates under the name Macnica ATD Europe.
About Macnica, Inc.
Macnica was established in 1972 as a semiconductor distribution company headquar-tered in Yokohama, Japan, and has over 85 sales offices worldwide in eastern Asia, Europe and the USA. Total number of employees is over 3,000 and its consolidated revenue for fiscal 2020 was approximately US$ 5.5 B.
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