Microelectronics world news

All About Circuits Looks Ahead at Embedded World 2024

AAC - Thu, 04/04/2024 - 03:00
Check out the technologies and products these leading companies plan to showcase at next week's Embedded World trade show in Nuremberg, Germany.

Earthquake in Taiwan—Our Hearts Go Out to Those Impacted

AAC - Wed, 04/03/2024 - 23:00
The 7.4 magnitude earthquake today in Taiwan has caused devastating loss and suffering. Our thoughts with all those affected.

How to Analyze Transmission Line Transformers: The Easy Way and the Hard Way

AAC - Wed, 04/03/2024 - 20:00
In this article, we explore two different methods for analyzing the impedance transformation ratio of a transmission line transformer.

BluGlass closes share purchase plan, adding $5.87m to $4.3m placement

Semiconductor today - Wed, 04/03/2024 - 19:23
BluGlass Ltd of Silverwater, Australia — which develops and manufactures gallium nitride (GaN) blue laser diodes based on its proprietary low-temperature, low-hydrogen remote-plasma chemical vapor deposition (RPCVD) technology — has closed its share purchase plan (SPP), raising $5.87m before costs...

No floating nodes, Part 2

EDN Network - Wed, 04/03/2024 - 16:13

Some of the commentary in response to Part 1 on this topic suggested that the two 1 pF capacitors, C4 and C5, had to be put in series for lack of availability of 0.5 pF parts.

A simulation of that presented circuit is seen as follows:

Figure 1 The circuit with a floating node and its Bode plot simulation.

Part selections differ somewhat from the original. These op-amps are virtual, the JFET is merely an available part from the simulation software and the diode represents the original photodiode. For all of that, these are all close enough. Please note the Bode plot of this configuration.

To keep using the pair of 1 pF capacitors, the following schematic is the same as above but with the addition of one more resistor, R8, in parallel with C4.

Figure 2 The circuit without a floating node (an additional resistor R8 added in parallel with C4) and its Bode plot simulation.

At 10 MΩ, resistor R8 provides a DC path for the formerly floating node to keep that node’s voltage from unpredictably shifting. Note that the Bode plot for this modified circuit is indistinguishable from the plot seen before.

Other options for tethering the formerly floating node exist as well. For example, R8 could be tied from the C4 and C5 junction to ground, again, with no visible effect on the Bode plot.

The best choice is best left to the designer.

John Dunn is an electronics consultant, and a graduate of The Polytechnic Institute of Brooklyn (BSEE) and of New York University (MSEE).

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Zypp Electric registers 3X revenue growth in FY24; deploys 20,000 e-scooters across India in 2023, goes operationally profitable

ELE Times - Wed, 04/03/2024 - 14:40

Zypp Electric, India’s leading tech-enabled EV-as-a-service platform, has marked a remarkable milestone with a staggering ~3X surge in revenue in FY24. This exponential growth underscores Zypp Electric’s unwavering commitment to transforming last-mile deliveries through sustainable mobility solutions. Having emerged as the number one ranked company in the entire list of Asia-Pacific 2024’s fastest-growing businesses, Zypp Electric has achieved a remarkable 396% compound annual growth rate (CAGR) from 2019 to 2022.

By successfully deploying an additional fleet of electric scooters across India, Zypp Electric has expanded its presence in six major metropolitan cities of Delhi NCR, Bangalore and Mumbai. The increase from 11,000 to more than 20,000 electric vehicles showcases the company’s dedication to sustainable logistics & mobility platform.

By collaborating with quick-commerce, food delivery, bike taxi, e-commerce and other online businesses, the company has been progressively working to ensure 100% electric last-mile deliveries in India, Zypp Electric has done 45 million+ shipment deliveries via electric vehicles from Jan’23 to Feb’24 period which equates to growing 76 Lakh trees on the planet earth. Over the past year, we have empowered more than 53,000 delivery executives to adopt an electric vehicle, with an opportunity to earn more on our platform. There has also been a notable rise in their monthly average earnings per rider, amounting to more than INR 24,000/month and allows them to save 50% more than petrol bike riders. Their environmentally friendly initiatives have led to a significant reduction of 29 million kilograms of carbon emissions since the start of its operations

A few of the key drivers of Zypp Electric’s unprecedented growth have been its core focus on a technology platform encompassing the entire EV ecosystem and its strategic expansion into new markets. From being the leader in the National Capital Region (NCR), Zypp Electric has successfully penetrated additional markets, including Bangalore, Mumbai, and now in Hyderabad too. This expansion not only signifies the company’s agility and adaptability but also its ambitious vision to revolutionise electric last-mile logistics across multiple urban landscapes.

Moreover, Zypp Electric’s foray into the three-wheeler cargo business further solidifies its position as a frontrunner in the EV sector. E3W fleet has grown 6X from Feb’23 to 750+ in Feb’24 and deliveries have increased from 4,320 to 92,000+ in the same period clocking 21X growth. By diversifying its portfolio, with a fleet of soon-to-reach 1000 electric L5 loaders & expanding, Zypp Electric is poised to cater to a wider range of business needs while maximising revenue streams along with branding options on the E3W open for advertising option.

In addition to its expansion endeavours, Zypp Electric has achieved operational profitability, a testament to its robust business model and strategic foresight. With a keen focus on sustainable growth, the company is now on the verge of reaching breakeven over the next 12 to 18 months, setting a solid foundation for long-term success.

Commenting on the company’s stellar performance, Akash Gupta, Co-Founder & CEO, of Zypp Electric, remarked, “The last fiscal year has been momentous for us. We grew our revenues almost 3X vs. the last fiscal year which I am super proud of for our team to achieve this milestone amid the changing EV landscape. While ramping things up in NCR & Bengaluru by adding more hubs, we initiated our operations in Mumbai this year. Looking ahead, we’re excited to commence our services in Hyderabad & target to launch in a new city every quarter. On the fleet front, we intend to grow our current strength of 20,000 to around 100,000 vehicles in the next 12 to 18 months and then grow that to 500,000 over the following 36 to 48 months. Profitability is the next major milestone which we’re eyeing closely at Zypp along with growth.”

Recently, Zypp Electric has also entered into a partnership with Porter Enterprises to provide reliable logistics solutions. With a robust foundation, strategic expansions, a superlative EV Fleet Management technology platform and a relentless pursuit of innovation, Zypp Electric is poised to reshape the landscape of last-mile deliveries and accelerate the transition towards a sustainable future.

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Aehr receives order from new customer for FOX-NP multi-wafer test & burn-in system

Semiconductor today - Wed, 04/03/2024 - 12:15
Semiconductor production test and reliability qualification equipment supplier Aehr Test Systems of Fremont, CA, USA has received an initial customer order for a FOX-NP wafer-level test and burn-in system, multiple WaferPak Contactors, and a FOX WaferPak Aligner to be used for engineering, qualification and small-lot production wafer-level test and burn-in of their silicon carbide devices...

SemiQ opens office in Taiwan

Semiconductor today - Wed, 04/03/2024 - 12:09
SemiQ Inc of Lake Forest, CA, USA — which designs, develops and manufactures silicon carbide (SiC) power semiconductors and 150mm SiC epitaxial wafers for high-voltage applications — has officially opened its newest office in Taiwan, underscoring its commitment to providing enhanced ground support to customers in the region while solidifying its presence in the Asia-Pacific market...

Microchip Technology Introduces ECC608 TrustMANAGER with Kudelski IoT keySTREAM

ELE Times - Wed, 04/03/2024 - 10:40

Cloud-based software as a service leverages secure authentication ICs to enable self-service custom PKI, streamlined in-field provisioning and lifecycle management for IoT devices

As the world comes to rely on interconnected IoT systems—for everything from household items like smart thermostats, virtual assistant technology and digital door locks to medical and industrial applications—the need for reliable cybersecurity on embedded systems has never been greater. To increase security on IoT products and facilitate easier setup and management, Microchip Technology has added the ECC608 TrustMANAGER with Kudelski IoT keySTREAM, Software as a Service (SaaS) to its Trust Platform portfolio of devices, services and tools.

With security credentials managed and updated in the field via keySTREAM—instead of being limited to a static certificate chain implemented during manufacturing—the ECC608 TrustMANAGER allows custom cryptographic credentials to be accurately provisioned at the end point without requiring supply chain customization and can be managed by the end user. keySTREAM offers a device-to-cloud solution for securing key assets end-to-end in an IoT ecosystem throughout a product’s lifecycle.

The ECC608 TrustMANAGER relies on a secure authentication IC that is designed to store and protect cryptographic keys and certificates, which are then managed by the keySTREAM SaaS. The combined silicon component and key management SaaS allow the user to set up a self-serve root Certificate Authority (root CA), and the associated public key infrastructure (PKI) secured by Kudelski IoT, to create and manage a dynamic certificate chain and provision devices in the field the first time they are connected. Once claimed in the SaaS account, the devices are automatically activated in the user’s keySTREAM service via in-field provisioning.

“As the volume of connected devices rapidly increases and security standards and regulations tighten, IoT designers are seeking more efficient ways of managing their devices once products are in their customers’ hands,” said Nuri Dagdeviren, corporate vice president of Microchip’s security computing group. “Our partnership with Kudelski and adding keySTREAM to our ECC608 TrustMANAGER enables customers to manage, scale and update IoT ecosystems efficiently via a cloud-based security SaaS for in-field provisioning and certificate management.”

Security standards and upcoming regulations are increasingly requiring upgradability of security infrastructure for IoT devices. This is a difficult task with traditionally static IoT security implementations, which require physical upgrades like changing out the security ICs in each device to stay in compliance. With the ECC608 TrustMANAGER, the process is automated and highly scalable, allowing devices to be managed securely and efficiently throughout their lifecycle. It also enables easy device ownership management without needing to change hardware, as security keys are updated digitally from the cloud into the device. This approach streamlines the supply chain processes for distribution partners as well.

“The ECC608 TrustMANAGER with keySTREAM marks a pivotal moment in our quest to secure the IoT landscape and make provisioning easier. Our collaboration with Microchip is not just about bringing advanced security solutions to the market, it’s about setting a new standard for smart device security across the board,” said Hardy Schmidbauer, senior vice president of Kudelski IoT.  “By leveraging Microchip’s renowned semiconductor technologies alongside Kudelski IoT’s security services, we are poised to deliver protection and a new ease of provisioning for IoT device manufacturers.”

This type of dynamic in-field provisioning and device management meets IoT security standards and will be useful in device certificate updates needed to stay in compliance with evolving security requirements. The keySTREAM SaaS allows for ongoing updates of keys designed to prevent and protect against evolving threats and security requirements. In-field provisioning also removes the need for customization for more efficient manufacturing.

The ECC608 is the first security IC in Microchip’s TrustMANAGER series. To get started, download the Trust Platform Design Suite and test the keySTREAM use case under the ECC608 TrustMANAGER.

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Infineon and Green Hills Software present integrated platform for real-time applications for software-defined vehicles

ELE Times - Wed, 04/03/2024 - 10:09

Infineon Technologies and Green Hills Software LLC, the global leader in embedded safety and security, have launched an integrated microcontroller-based processing platform for safety-critical real-time automotive systems. The platform combines the safety-certified real-time operating system (RTOS) µ-velOSity from Green Hills with Infineon’s new generation of safety controllers AURIX TC4x. This provides OEMs and Tier 1 suppliers with a reliable, safe, and secure processing platform to develop domain and zonal controllers as well as drivetrains for electric vehicles for their next-generation software-defined vehicle (SDV) architectures.

“Green Hills’ product philosophy for tools and the matching software environment support our requirements for reliable products and solutions very well,” said Thomas Schneid, Senior Director for Software, Partnership and Ecosystem Management at Infineon. “Combined with advanced microcontroller products such as the AURIX TC4x family, our customers gain a significant advantage in meeting their critical requirements.”

“We are excited to extend our long-standing collaboration with Infineon and showcase our joint solution at embedded world 2024,” said Dan Mender, Vice President of Business Development at Green Hills Software. “The combination of Infineon’s new scalable microcontroller family AURIX TC4x and Green Hills’ µ-velOSity RTOS will enable our joint customers to develop safe and secure systems for the next generation of SDV E/E architectures.”

Enabling the development of advanced ECUs

New automotive electronic control units (ECU) are essential for the adapted vehicle E/E architecture of SDVs. To develop these ECUs, new microcontrollers are needed that also meet the requirements of safety-critical systems such as zone control, chassis, radar, electric drives, and affordable AI systems, by offering higher performance and advanced features. Infineon addresses this demand with its new family of AURIX TC4x devices that complement its TriCore multicore architecture with a safety and security accelerator suite. Moreover, to meet the stringent safety requirements, Green Hills has ported its safety-certified µ-velOSity RTOS to the AURIX TC4x family. The advanced MULTI integrated development environment is also supporting this processor family, enabling developers to shorten development times by increasing developer productivity while generating the fastest and smallest code for the AURIX TC4x.

Infineon’s AURIX TC4x family provides an upward migration path from the previous AURIX TC3x family of ASIL-compliant automotive MCUs. AURIX TC4x uses the next-generation TriCore 1.8 and a scalable accelerator suite, including the new Parallel Processing Unit (PPU) as well as several intelligent accelerators, in areas such as data routing, digital signal processing, radar processing and cryptographic computing. The AURIX TC4x family supports high-speed interfaces, including Gigabit Ethernet, PCIe, CAN-XL or 10BASE T1S Ethernet, to provide sufficient communication bandwidth for the next generation of automotive systems.

The Green Hills µ-velOSity RTOS targets the highest functional safety levels (ISO 26262 ASIL D). Based on an efficient and reliable kernel with a minimal footprint and a simple API, it also offers fast boot and streamlined execution. In addition, µ-velOSity is tightly integrated with the MULTI safety-certified tools and compilers.

Demonstration at the embedded world 2024

Green Hills and Infineon will showcase their solution at embedded world 2024, April 9-11, at the Green Hills booth 4-325.

Infineon at Embedded World

embedded world will take place in Nuremberg, Germany, from 9 to 11 April 2024. Infineon will present its products and solutions for decarbonization and digitalization in hall 4A, booth #138 and virtually.

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MIKROE Partners With Allegro MicroSystems To Introduce New Click Boards Targeting Industrial Applications

ELE Times - Wed, 04/03/2024 - 09:51

MikroElektronika (MIKROE), the embedded solutions company that dramatically cuts development time by providing innovative hardware and software products based on proven standards, has announced that the company is closely collaborating with Allegro MicroSystems, Inc. (“Allegro”), a global leader in power and sensing solutions for motion control and energy-efficient systems, to offer a broad portfolio of products that reduce development effort and accelerate time to market. Over the last quarter, MIKROE has introduced three new, compact, Click add-on boards incorporating Allegro’s technology.

“As a third-party tool provider we strive to promote our partners’ newest technologies and products, by making them simple to use in the broad market,” said Nebojsa Matic, CEO of MIKROE. “We are delighted to collaborate with Allegro and look forward to introducing many more Click boards utilizing their sensor technology in the near future.”

Hall Current 17 Click: 

A compact add-on board that contains a precise solution for AC/DC current sensing,  the Hall Current 17 Click board features the ACS37010, a high-accuracy current sensor from Allegro. This Click makes the perfect solution for the development of applications requiring a combination of high-current monitoring and high isolation voltage between the primary high-current and low-voltage sides.

Angle 9 Click:

Designed to detect the absolute position of a permanent magnet, this board features the AAS33001, Allegro’s precision, contactless angle sensor with incremental and motor commutation outputs and on-chip linearization for 0° to 360° angular position, rotation speed, and directional measurement. Support for incremental output interface (ABI) and motor commutation (UVW) is also available. On-chip EEPROM enables factory and customer calibration parameters to be stored. This Click board is the perfect solution for the development of contactless potentiometers, contactless knobs, RC servos, and other angular position measurement solutions.

Hall Current 16 Click:

A precise solution for AC/DC current sensing, this board is based on the ACS37002, a 400kHz high-accuracy current sensor from Allegro that features pin-selectable gains that can be used to configure the device to one of the four defined sensitivities and

corresponding current ranges, increasing design flexibility. In addition, an adjustable overcurrent fast fault provides short-circuit detection. This Click board facilitates the development of applications requiring a combination of high-current monitoring and high isolation voltage between the primary high-current and low-voltage sides.

“We are thrilled to partner with MIKROE as they release three new easy to use development tools that incorporate our industry-leading magnetic current and angle sensors,” said Ram Sathappan, Senior Director, Applications Marketing at Allegro. “We anticipate a very strong interest, as these sensor Click boards enable our customers to quickly develop innovative end products requiring high accuracy and reliability, without having to develop their own hardware.”

Like all Click boards from MIKROE, the solutions featuring Allegro’s sensor technology are packaged with mikroSDK software and a library with all the functions. The Clicks come fully tested and approved prototype, making them reliable devices ready to use on the development board. This can cut months from the development cycle and save considerable expense.

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Anritsu Enhances Protocol Test Solution Supporting NTN NB-IoT Devices for GEO Satellites

ELE Times - Wed, 04/03/2024 - 08:41

Anritsu Corporation introduces the protocol test[*1] solution for Non-Terrestrial Network (NTN)[*2] devices for GEO[*3] satellites, which extends the functionality of the Signalling Tester MD8430A to support the NTN NB-IoT[*4] defined in 3GPP Release 17.

Anritsu has been providing solutions for protocol tests, RF tests, protocol conformance tests, and RF conformance tests over the years for 3G/LTE/5G. With this functionality enhancement, Anritsu will help to improve the quality of NTN devices and contribute to the realization of a prosperous network society.

Development Background

Previously, individual satellite operators have offered their proprietary unique satellite communication services. Since the standardization of NTN communications in 3GPP Release 17, however, the satellite communication service market has rapidly grown, and various verifications based on the standard specifications have become necessary. For GEO satellites, NTN device vendors need test environments that can simulate the communication delay and transmit information to the device for delay compensation, because the distance between the satellite and the device is approximately 36,000 km. To support these test requirements, Anritsu has developed a protocol test solution that boasts high reliability built on test experiences with market-leading customers and high flexibility in condition settings.

Product Outline

The MD8430A is a base station simulator that can build a simulated network necessary for the development of chipsets and devices. With its software option NTN NB-IoT (GEO) MD8430A-043 and its control software option NTN over IoT Framework for RTD MX800050A-070, the MD8430A can be connected to an NTN device for GEO satellites, which makes it possible to test the connection with the NTN network and roaming between the terrestrial network and NTN network, among others.

Technical Terms

[*1]: Protocol test
Protocol sequence test (location registration, call placement, incoming call reception, mobile device/network disconnection, handover, etc.)

[*2]: NTN
Abbreviation for Non-Terrestrial Network. It refers to a communication network system that provides multi-layered connections among mobile devices on the ground as well as in the sea, skies, and outer space. The NTN can efficiently cover locations that are difficult for radio signals from terrestrial base stations to reach, such as remote islands, oceans, and mountains, thus delivering Internet access to underserved areas.

[*3]: GEO
Abbreviation for Geostationary Earth Orbit

[*4]: NB-IoT
Abbreviation for NarrowBand Internet of Things. It refers to a technology that enables a host of IoT devices to connect to the network with low power consumption. NTN NB-IoT is an IoT communication service for areas that terrestrial base stations cannot cover and is used in such fields as maritime shipping, logistics, mining, and automobiles.

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MCU Roundup: 3 New MCUs Push Performance at the Edge

AAC - Wed, 04/03/2024 - 02:00
From small appliances to edge AI, the latest MCUs from Renesas, Ambiq, and Nuvoton provide higher performance and efficiency.

Microchip Expands Its Serial SRAM Devices to 2 Mb and 4 Mb

AAC - Tue, 04/02/2024 - 20:00
With speeds up to 143 MHz, the new 2-Mb and 4-Mb serial SRAM devices can be a lower-cost alternative to traditional parallel SRAM products.

A groovy apparatus for calibrating miniature high sensitivity anemometers

EDN Network - Tue, 04/02/2024 - 16:54

Anemometers are an important category of environmental sensor. Articles about their design, data capture, and linearization have comprised topics featured in EDN Design Ideas, several quite recently.

Less well covered, however, has been the topic of accurate, inexpensive, (even improvisational) methods for their testing and calibration.

Wow the engineering world with your unique design: Design Ideas Submission Guide

The calibration method shown here is suited for sensitive, low air speed, miniature, solid-state thermal airflow sensors with full-scale ranges up to 250 fpm (2.8 mph), two of which are illustrated in Figure 1 and Figure 2. This type is particularly useful in applications like HVAC setup and forced-convection cooling airflow distribution measurement and monitoring.

Figure 1 GO/NOGO thermal low speed airflow sensor, ON/OFF airspeed threshold is set by R4.

Figure 2 Linearized battery powered low speed thermal anemometer.

 The airspeed measured by any anemometer is relative to the instrument. Whether it’s the air or the anemometer (or both) that’s actually moving is irrelevant. This simple calibrator consists of a repurposed phonograph turntable capable of accurate operation at the traditional rotational speeds of 33.3, 45, 78 rpm, and of course, zero. See Figure 3.

Figure 3 “Groovy” anemometer calibrator built from salvaged phonograph.

 Conveniently, the diameter of a standard phonograph record is one foot. So, an airspeed sensor mounted on the periphery of an ordinary discarded vinyl record will be moved through the air at:

Air speed (feet per minute) = π * RPM
33.3 rpm = 105 fpm
45 rpm = 141 fpm
78 rpm = 245 fpm

 Connections between the rotating anemometer sensor, external (stationary) power supply, and instrumentation are easily provided by a simple slipring commutator improvised from standard 3.5-mm 4-circuit audio jack and plug. The former is supported by an inverted plastic funnel glued to the record while the latter is affixed to the tone arm. Some light lubrication on the plug may be beneficial in minimizing potentially problematic drag on the turntable motor.

A suitable counterweight positioned diametrically opposite to the sensor under test can help balance the turntable against static (weight) and dynamic (centripetal) forces acting on the rotating circuitry.

Stephen Woodward’s relationship with EDN’s DI column goes back quite a long way. Over 100 submissions have been accepted since his first contribution back in 1974.

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Guerrilla RF completes $5m private placement equity financing and debt conversion

Semiconductor today - Tue, 04/02/2024 - 15:16
Guerrilla RF Inc (GRF) of Greensboro, NC, USA — which develops and manufactures radio-frequency integrated circuits (RFICs) and monolithic microwave integrated circuits (MMICs) for wireless applications — has completed a private placement equity financing, selling about 2 million shares of its common stock and accompanying warrants to purchase up to 2 million shares of its common stock...

LED market to rebound by 3% to $13bn in 2024

Semiconductor today - Tue, 04/02/2024 - 14:31
The global LED market is set to recover in 2024, with revenue growing by 3% year-on-year to US$13bn, forecasts TrendForce. This resurgence is driven primarily by demand across various sectors, including automotive lighting and displays, general/architectural/agricultural lighting, LED video walls, and UV/IR LEDs. Additionally, the successful deployment of micro-LEDs in large displays by Samsung and luxury watches by Tag Heuer has played a significant role in this growth...

Celestial AI closes $175m Series C funding round

Semiconductor today - Tue, 04/02/2024 - 14:12
After raising $100m in a Series B funding round at the end of June 2023, Celestial AI of Santa Clara, CA, USA has raised $175m in a Series C funding round led by Thomas Tull’s US Innovative Technology Fund (USIT), joined by new and existing investors including AMD Ventures, Koch Disruptive Technologies (KDT), Temasek, Temasek’s subsidiary Xora Innovation, IAG Capital Partners, Samsung Catalyst, Smart Global Holdings (SGH), Porsche Automobil Holding SE, Engine Ventures, M-Ventures and Tyche Partners...

100 LED chaser

Reddit:Electronics - Tue, 04/02/2024 - 11:47
100 LED chaser

I like building useless gadgets and this was my latest. It uses a 555 and 2 X 4017's. I originally found a circuit on the internet, and modified it so it would actually work. (Something found on the internet is totally wrong? -Never!) It now hangs on my workshop wall, constantly powered by a solar panel/battery. I ordered 100 blue LED's and got sent 95, that's why theres 5 odd ones.

https://preview.redd.it/kkvpic0d41sc1.jpg?width=4128&format=pjpg&auto=webp&s=cdc9e620000fdf71ca2acca01cd69bb2fff59f3e

https://preview.redd.it/wmjtsc0d41sc1.jpg?width=4128&format=pjpg&auto=webp&s=c3571f8339813dc150bd3eb35c866310c6062632

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