MILPITAS, Calif., May 24, 2022 (GLOBE NEWSWIRE) — Crocus Technology Inc., developer of XtremeSense TMR sensors, today announced the release of a high accuracy energy metering solution with isolated current sensing and a digital output. The solution is capable of measuring power, voltage and current while providing 1,820 V_PK isolation in AC or DC applications. The result is a smaller and more efficient design without the use of large current transformers. 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 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/powermeter/.

Also available for download is the AN136 CT430 Power Measurement Module user guide, https://www.crocus–technology.com/wp–content/uploads/2022/05/AN136–CT430–Power–Measurement–Module–Rev0.0.pdf.

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 brings significant advancements to IoT and smart devices, industrial, consumer, medical, and automotive electronics applications demanding high accuracy, high resolution, stable temperature performance, and low power consumption. Crocus is headquartered in Milpitas, California. To learn more about Crocus Technology and its leading–edge TMR technology, please visit www.crocus–technology.com.

For more information, please contact:

Crocus Technology
Email: info@crocus–technology.com

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/f66b8a85–82f7–4bd2–892b–6e901877f1d6

GLOBENEWSWIRE (Distribution ID 8547290)

MILPITAS, Calif., May 23, 2022 (GLOBE NEWSWIRE) — Crocus Technology Inc., the leading supplier of disruptive TMR (Tunnel Magneto–Resistance) XtremeSense sensors, today announced the CT45x family of contactless isolated current sensors to enable high precision and high current measurements in a more simplified solution. Unlike existing solutions, the CT45x allows manufacturers to eliminate costly shields, concentrators or cores. The CT452 and CT453 offers contactless 0.7% accuracy, 1 MHz bandwidth, and better than –50 dB immunity to external magnetic fields without additional mechanical components. This combination of performance and accuracy enables customers to reduce their overall product size and weight which enables them to replace large and costly current sense modules with a small and simple solution.

As current requirements have been increasing so have the challenges of accurately measuring high currents, typically >200 A and often up to 2,000 A. Shunt resistors with isolated amplifiers are broadly used but present an issue with I²R losses and tend to be large and costly. Existing magnetic based solutions like Hall Effect and AMR are less accurate and have high temperature drift. The CT45x products are based on XtremeSense TMR technology that delivers the future with a high signal–to–noise ratio (SNR) contactless approach which can scale with the system requirements, high bandwidth and fast response time, common–model field rejection, combined with high accuracy measurements over temperature.

In addition, many applications now require very accurate current measurements in the milliamp range up to the 1,000 A range or more. Often this type of solution involves multiple current sensors to achieve the desired system performance with many design compromises and complexities. Using Crocus' XtremeSense TMR current sensors allows for a no–compromise and simple solution using a single CT45x sensor which provides a large dynamic range and a high SNR. For example, the CT45x is able to measure down to 500 mA resolution and up to 1,800 A while maintaining better than 0.7% accuracy.

The CT45x offers groundbreaking noise performance, as low as 0.55 mV_RMS, to enable applications to sense small current levels and small changes or variations in current through a busbar. This performance is almost 10 times better than existing Hall Effect solutions. This results in a SNR (signal–to–noise ratio) as high as 77 dB for the CT45x measurement which allows the system to process higher resolution data with higher accuracy.

"With the introduction of the CT45x family of contactless current sense products, we now have a complete portfolio of products for our customers from small currents to larger currents," states Zack Deiri, President and CEO of Crocus Technology. "This product based on Crocus' cutting–edge TMR technology is the most exciting for us as the benefits of our XtremeSense TMR are addressing the needs of higher current applications that can't be met with existing solutions without compromises. Crocus is excited to be addressing new high current markets such as BMS, Inverters, DC/DC Converter and many others."

Product features and performance:

CT450 & CT452 (5 V version) & CT453 (3.3 V version)

Isolated Contactless Current Sensor

Capable of measuring currents from 5 mA to >2,000 A

Total output error 0.7% Full–Scale

300 ns response time, 1 MHz bandwidth

Available in six different configured field ranges

Protection capability with Over Field Detection (OFD)

Integrated Common Mode Field Rejection (CMFR) with >90% immunity (CT452/3)

Uniform magnetic field sensing (CT450)

Targeting applications in EV Chargers, Battery Management Systems (BMS), DC/DC Converters, 48–V system, Bidirectional Charging and AC/DC Inverters.

The CT450 is available in TSSOP–8 package. The CT452/3 are available in TSSOP–16 package For more information, please visit the product webpage:

CT450 https://crocus–technology.com/products/ct450/

CT452 https://crocus–technology.com/products/ct452/

CT453 https://crocus–technology.com/products/ct453/

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 http://www.crocus–technology.com.

For more information, please contact:

Crocus Technology
Email: info@crocus–technology.com

GLOBENEWSWIRE (Distribution ID 8547204)

SANTA CLARA, Calif., Oct. 26, 2021 (GLOBE NEWSWIRE) — Crocus Technology Inc., the leading supplier of disruptive Tunnel Magneto–Resistance XtremeSense sensors, today announces the CT425, CT426, CT427 and CT428 isolated current sensors with <1% total error over the full operating temperature range without sacrificing accuracy or bandwidth. The high–speed operation and accurate output allow customers to optimize system design for smaller size and higher efficiency.

The CT42x with less than 300 ns response time greatly simplifies the solution in EV Charging applications which are utilizing GaN (Gallium Nitride) or SiC (Silicon Carbide) transistors to improve power density. Likewise, the CT42x offers improvements in terms of performance and size compared to the classic isolated current sense solutions which utilize a shunt resistor, amplifier, and digital isolator to sense the voltage and convert this signal into a current measurement. The CT42x directly senses the flow of current through the package avoiding errors in conversion and provides inherently faster and more accurate measurements. With industry leading response time of 300 ns, high power architectures like the CCM Totem–Pole PFC can provide higher power density solutions. The fast switching frequency of Wide Bandgap (WBG) power devices requires a current sensor that can detect fast transients to prevent potential cascading failures. The integration in a space saving SOIC–8 package also reduces the total PCB footprint size by up to 8 times smaller compared to existing solutions.

The CT42x has robust built–in immunity to common–mode fields which allows the device to reject greater than 99% of external stray magnetic fields without the need for external shielding while maintaining <1% total accuracy. Crocus' proprietary TMR technology inherently offers a very high signal–to–noise ratio (SNR) which allows for high resolution measurements required for precision control or monitoring applications.

"The expansion of this product family brings more options to our customers to experience the high precision performance of our XtremeSense TMR products in more demanding applications," states Zack Deiri, President and CEO of Crocus Technology. "Previously our customers would select products that offered them good performance on one parameter over temperature and then they would adjust their design to compensate for the other parameters. With Crocus products they are finding they can achieve high precision and high bandwidth offering them a comprehensive high performance solution."

Product features and performance:

CT425 & CT428 (5.0 V version), CT426 & CT427 (3.3 V version)

Integrated 0.5 m conductor enabling 20 A to 65 A AC and DC applications

Total output error 0.5% FS (typ)

300 ns response time, 1 MHz bandwidth

Rated Isolation Voltage: >4 kV_RMS

AEC–Q100 & UL/IEC 62368 Certified, IEC 61000–4–5 Certified

Over current detection (CT427 & CT428), Enhanced filter (CT425 & CT426)

Integrated Common Mode Field Rejection (CMFR) with > 99% immunity

Targeting applications in Power–Factor Correction (PFC), Solar Power Inverters, Battery Management Systems (BMS), xEV Chargers, DC/DC converters and AC/DC inverters.

The CT425, CT426, CT427 and CT428 sensors are available in an industry standard SOIC–8 package. Samples and evaluation boards are currently available. For more information on the CT42x product family, please visit the product webpage:

https://crocus–technology.com/products/ct42x/

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 brings significant advancements to IoT and smart devices, industrial, consumer, medical, and automotive electronics applications demanding high accuracy, high resolution, stable temperature performance, and low power consumption. Crocus is headquartered in Santa Clara, California. For more information, please visit http://www.crocus–technology.com.

2021 Crocus Technology International Corp. All rights reserved. Crocus Technology, XtremeSense and combinations thereof are trademarks of Crocus Technology Inc. and Crocus Technology SA. Other names are for informational purposes only and may be trademarks of their respective owners.

For more information, please contact:

Elsa Magnani
Crocus Technology
Tel: +1–208–999–6643
Email: emagnani@crocus–technology.com

GLOBENEWSWIRE (Distribution ID 8378416)

SANTA CLARA, Calif., Aug. 16, 2021 (GLOBE NEWSWIRE) — Crocus Technology Inc., the leading supplier of disruptive Tunnel Magneto–Resistance XtremeSense TMR sensors, today announces the CT430 and CT431 isolated current sensor with 1MHz bandwidth and <1% total error over the full temperature range. The high speed operation and accurate output allow customers to optimize system design for smaller size and higher efficiency. In contrast to existing designs that utilize a Hall Sensor, the XtremeSense TMR sensor enables a no–compromise design solution by combining high bandwidth response and high accuracy.

The CT43x products are coreless devices which utilize Crocus' state–of–the–art XtremeSense TMR technology to detect extremely small variations in AC or DC currents while achieving an unprecedented total output error of less than 1.0% over the full temperature range from –40 C to +125 C. In addition, the CT43x has robust built–in immunity to common–mode fields which allows the device to reject > 99% of stray fields without the need for external shielding. The Crocus proprietary TMR technology inherently offers very high signal–to–noise ratio (SNR) which allow for high resolution measurements required for precision control or monitoring applications. The linear error and offset performance is intrinsically more accurate permitting the elimination of system level calibration normally done with an external voltage reference, thus freeing up processor time and simplifying system design. "I'm excited to introduce this truly differentiated current sensor product which highlights the benefits the Crocus XtremeSense TMR technology can bring." states Zack Deiri, President and CEO of Crocus Technology. "Our customers have been astounded by the level of performance we are able to deliver in their applications. The combination of high response time and accuracy provides system designers the flexibility they have been eager to achieve without any compromises."

Product features and performance:

CT430 (5V version), CT431 (3.3V version)

Integrated 0.5m conductor enabling 20A, 30A and 50A applications

Total error output +/–0.7% (typ)

300ns response time, 1MHz bandwidth

Low noise 9mArms

Integrated Common Mode Field Rejection (CMFR) with > 99% immunity

Over–Current Detection output pin

Investments made last year to expand our production capacity has enabled Crocus to be prepared to support high volume production today. To date we have shipped over 50M XtremeSense TMR sensors, and our customer base continues to rapidly expand. Products like the CT430 and CT431 which have an industry standard footprint enable customers to easily upgrade their existing products and accelerate product adoption.

Targeting applications in Solar Power Inverters, Power–Factor Correction (PFC), Battery Management Systems (BMS), Smart Appliances, IoT, and Power Supplies applications. These state–of–the–art devices are perfect companions to emerging applications utilizing GaN and SiC power devices where the fast response time of the Crocus TMR current sensors will ensure the highest operational efficiency.

The CT430 and CT431 are available in an industry standard 16–lead SOIC–Wide package with dimensions of 10.20 10.31 2.54 mm. Samples and evaluation boards are currently available, and the devices will be in full production in August 2021. For more information on the CT430 and CT431 products, please visit the product webpage:

CT430 https://crocus–technology.com/products/ct430/

CT431 https://crocus–technology.com/products/ct431/

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 brings significant advancements to IoT and smart devices, industrial, consumer, medical, and automotive electronics applications demanding high accuracy, high resolution, stable temperature performance, and low power consumption. Crocus is headquartered in Santa Clara, California. For more information, please visit http://www.crocus–technology.com.

2021 Crocus Technology International Corp. All rights reserved. Crocus Technology, XtremeSense and combinations thereof are trademarks of Crocus Technology Inc. and Crocus Technology SA. Other names are for informational purposes only and may be trademarks of their respective owners.

For more information, please contact:

Elsa Magnani
Crocus Technology
Tel: +1–208–999–6643
Email: emagnani@crocus–technology.com

GLOBENEWSWIRE (Distribution ID 8307887)