ICs & Semiconductors

GLF Integrated Power offers two versions of AEC-Q100 grade load switch ICs

Fri, Oct 07, 2022

Two versions of the IQSmart IC load switches are offered by GLF Integrated Power. The AEC-Q100 qualified ICs have a wide temperature range, with one version featuring true reverse current blocking.

The GLF1111Q and GLF1200Q low power load switches are rated for a wide temperature range (-40 to +125 degrees C). The GLF1111Q provides industry-leading, battery-saving leakage current of 2nA, typical, said GLF. 

The GLF1200Q features a true reverse-current blocking, which prevents a backup power source from being discharged when an input node is shorted. The GLF1200Q, therefore, works all of the time regardless of on or off state.

Applications for the GLF1111Q and GLF1200Q include infotainment and cluster display systems, diagnostic systems, passive entry / start systems, customer premise equipment (CPE), face recognition systems and intelligent cockpit and autonomous driving applications. 

Both the GLF1111Q and GLF1200Q IQSmart devices are packaged in a SOT-23-5L and offer easy visual inspection of solder joints. Both ICs also feature integrated slew rate control that limits inrush upon turn on, therefore minimising the effects of voltage droop. 

Each load switch IC supports a wide input voltage range of 1.5 to 5.5V. A single device can therefore be used in a variety of voltage rail applications, helping to simplify inventory management, said GLF. Both ICs are also offered with an optional output discharge switch.

“The GLF1111Q and GLF1200Q address the ever-expanding, evolving range of automotive electronic systems that require a high-performance load switch with a wide-ambient operating temperature range to assure reliable, long-term operations,” explained Eileen Sun, president and CEO at GLF Integrated Power.

GLF integrated Power is a fabless semiconductor company based in Santa Clara, California, USA. It was founded in 2013 in response to the IoT, portable and wearable ‘revolution’. The company supplies efficient, small, silicon power control and protection ICs and has developed IP that enables cost-effective, efficient and differentiated power management solutions.

http://www.glfipower.com

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Digital pixel readout IC works with existing technology

Fri, Oct 07, 2022

Able to work with existing detector and optics technology, the Calcium high dynamic range digital pixel readout IC is available from Senseeker Engineering in an industry standard format and available for commercial use.

The 20 micron, 640 x 512mm Calcium RP0033 DPROIC (digital pixel readout IC) has a dynamic range above 120dB and a frame rate of up to 700 frames per second. 

It can be used with existing detector and optics technology, said Senseeker. Customers can accelerate development of high dynamic range, infrared focal plane arrays (FPAs) by hybridising available off-the-shelf detectors with this advanced commercial readout, explained the company.

The Calcium RP0033 has dual gain modes and programmable well capacities of over 40 Me- and 400 Me-, each with low read noise of 50 and 330 electrons at 80K, respectively. The chip is controlled through Senseeker’s SenSPI serial peripheral interface to facilitate communications. It can operate in both integrate-then-read and integrate-while-read modes and has programmable windows to observe and track targets at thousands of frames per second. 

“This chip is designed to make extremely advanced digital pixel technology accessible to everyone,” said Senseeker’s president, Kenton Veeder. Developers can attach a detector and drop the IC behind existing optics or in a Senseeker sensor test unit to begin imaging with single-digit mK NETD.

Senseeker’s Calcium architecture is stitchable up to a 4k x 4k array size. This allows the proven base design to be electronically stitched together in blocks of 512 x 512 rows and columns to grow a family of DPROICs from small to very large formats.  Larger format Calcium DPROICs are already in development, with a 2k x 1k unit coming soon.

The Calcium RP0033 is in production now and is supported by an electronics evaluation kit also available from Senseeker. 

The Calcium DPROIC is already being used by QmagiQ to develop SLS FPAs for the next generation of infrared imaging, revealed Mani Sundaram, president and CEO at QmagiQ.

https://www.senseeker.com

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eFuse ICs protect and control circuits in datacomms and industry

Thu, Oct 06, 2022

Four ICs have been developed by Littelfuse to protect, sense and control consumer, datacomms and industrial electronics. There are four eFuse Protection ICs available from Littelfuse.

The ICs are designed to provide a wide range of power input (3.3V to 28V) and integrated protection in the form of over-voltage, over-current, short circuit, inrush current, reverse current, and over-temperature protection with real-time diagnostics – all in a single chip.

The LS0504EVT233 is a 5V, 4A IC with over-voltage, over-current protection in an SOT23-3 package. The LS0505EVD22 is a 5V, 5A model with over-voltage and over-current protection in a DFN 2.0 x 2.0mm package. The LS1205ExD33 is an 18V, 5A IC with programmable current limit and output voltage clamp in a DFN 3.0 x 3.0mm package. The fourth model, the LS2406ERQ23 is a 28V, 6A true reverse block, fast role swap IC in a QFN 2.5 x 3.2mm package. 

The ICs can be used in Bluetooth headsets, wearable devices, PCs as well as tablets and notebooks, charging cables, battery-powered and adapter powered devices, networking and datacomms power systems, fan control HDD and SDD storage drives and industrial equipment with 12/24V power I/O.   

The ICs provide an accurate current limiter, with faster response time and more integrated protection features than traditional fuses and PTCs, claimed Littelfuse. They also have design flexibility with adjustable over-voltage threshold, current limiting, and inrush current protection, with true reverse current blocking. The integrated ICs save PCB space and reduce the bill of material cost, while reducing design-in phase and time to market compared to typical discrete solutions, such as a hot-swap controller and MOSFET combination, said the company.

They are also claimed to increase battery life, lower repair costs and extend overall product lifetime.

  “Providing a low power consumption, high accuracy current limiting circuit with quick response time makes them a win-win-win for many portable electronics and datacom applications,” said Bernie Hsieh, assistant product manager of the Protection Semiconductor business team at Littelfuse.

The eFuse Protection ICs are available in tape and reel format in quantities through authorised Littelfuse distributors worldwide. 

 http://www.Littelfuse.com

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NFC chip is first IC certified for CCC applications

Wed, Oct 05, 2022

Believed to be the first NFC Forum-certified IC for CCC applications, the ST25R3920B eases certification of digital car key systems, said STMicroelectronics.

The automotive-qualified NFC reader ICs for Car Connectivity Consortium (CCC) digital-key applications is used in car door and centre console locations for keyless entry and starting. It can also be used as Qi wireless-charging control and smartphone pairing. 

The chip has ST’s Heartbeat algorithm for NFC card protection on Wireless Power Consortium (WPC) applications, which can differentiate between an NFC card and a smartphone in card-emulation mode. This ensures phones can charge while cards stay protected.

New features include enhanced active wave shaping (AWS), this eases certification to the latest NFC Forum Certification Release 13 (CR13), said ST. It also promotes interoperability between CCC digital keys and smartphones. AWS helps remove undershoot and overshoot from the received signal by adjusting parameters. In doing so it avoids repeatedly rematching the antenna during development. The ST25R3920B also supports automatic antenna tuning and automatic low power wake up.

The ST25R3920B has output power up to 1.6W combined with what is claimed to be best in class sensitivity to maximise interaction distance when installed in, for example, in a car door handle, where space constraints require a small antenna. The output power is dynamically adjustable to comply with upper and lower limits expressed in NFC Forum and EMVCo specifications.

ST has combined a highly noise-resistant input structure and integrate noise suppression receivers (NSR). It claimed that the ST25R3920B has the market’s best immunity against external interference. It can also pass car manufacturers’ most stringent proprietary injected noise tests to ensure safe operation in worst-case conditions, said the company.

Samples of the ST25R3920B are available now. 

http://www.st.com

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