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ATMXT3072M1 and ATMXT2496M1 single-chip touchscreen controllers bring reliable and secure touch detection to automotive displays including emerging OLED and microLED technologies

Automakers are revolutionizing the driving experience with innovative smart cockpit designs that feature large displays and emerging technologies like Organic Light Emitting Diodes (OLEDs) and microLEDs, seamlessly blending functionality with brand identity. However, these advancements pose significant challenges for the integration of capacitive touch sensing, especially with the thinner stack-up and an increasing number of touch electrodes. To address these challenges, Microchip Technology has launched the ATMXT3072M1 and ATMXT2496M1 touchscreen controller families to help provide automotive HMI designers with reliable touch solutions. The single-chip touchscreen controllers feature up to 112 reconfigurable touch channels—or 162 equivalent touch channels in ultra-wide mode— enabling the support of large, curved and free-form touch displays up to 20 inches in 16:9 format and 34 inches in 7:1 format.

Large thin displays, such as on-cell OLED, embed touch electrodes with higher capacitive loads and stronger coupling of display noise, increasing the risk of false or missed touch detections. As part of the maXTouch touchscreen controller family, the new devices employ Microchip’s proprietary Smart Mutual touch acquisition method and algorithms to increase the touch Signal-to-Noise Ratio (SNR) by up to +15 dB compared to the previous generation.

“The size and appearance of automotive cockpit displays can significantly influence a buyer’s perception of the vehicle’s technological sophistication. However, integrating reliable touch functionality into advanced displays can present significant challenges,” said Patrick Johnson, senior corporate vice president overseeing Microchip’s human machine interface division. “Our ATMXT3072M1 and ATMXT2496M1 touchscreen controllers address these challenges with innovative sensing algorithms for fast and reliable touch performance. This enables automakers to design cutting-edge, visually stunning and user-friendly interfaces that enhance both the driving experience and vehicle safety.”

ATMXT3072M1 and ATMXT2496M1 controllers are designed to be compliant with ASIL-A and B standards and are developed according to Microchip’s ISO26262 Functional Safety Management System, which is certified by TÜV Rheinland. Failure Modes, Effects and Diagnostic Analysis (FMEDA) and safety manuals are also available to help customers achieve certification for their systems’ touch functionality more efficiently and cost-effectively. The touch controllers’ firmware is upgradable by the automobile’s main computer system and can be verified using the integrated firmware authentication feature, which implements the SHA-512 cryptographic hash function. This cybersecurity function enables reliable Over-the-Air (OTA) updates in compliance with ISO 21434:2021 standards.

To limit eyes-off-road time and promote safer driving, the Euro NCAP tests in 2026 will likely encourage manufacturers to use separate physical controls for basic functions. Microchip’s Knob-on-Display (KoD) technology allows for the addition of intuitive physical knobs on the touchscreen, improving safety while preserving the sleek look of modern vehicle displays. Additionally, implementing haptic feedback on the touchscreen is a recognized method for reducing driver distraction. The new maXTouch M1 Generation touchscreen controller features dedicated functions, such as the Shape Event Trigger combined with automated pattern Pulse Width Modulation (PWM), to achieve ultra-low-latency haptic control. This innovation transfers the decision-making and generation of haptic waveforms from the main application host processor to the touchscreen controller.

Visit the maXTouch M1 Generation family webpage to learn more about the key features of Microchip’s touchscreen controller solutions.

The comprehensive EV01S50A development printed circuit board (PCB) was designed for the ATMXT3072M1 touchscreen controller family to enable customers to more easily evaluate and test the devices in their applications. The EV13B92A evaluation kit includes a 15.6” ITO touch sensor.

For additional information and to purchase, contact a Microchip sales representative or authorized worldwide distributor.

The post Microchip Extends maXTouch M1 Generation Family To Support Large, Curved and Shaped Automotive Displays appeared first on ELE Times.

Infineon is advancing industry-wide standardization by offering its CoolGaN Generation 3 (G3) transistors in silicon MOSFET packages. The IGD015S10S1 100-V transistor will be housed in a 5×6-mm routable QFN (RQFN) package, while the IGE033S08S1 80-V variant will come in a 3.3×3.3-mm RQFN package.

These two CoolGaN G3 transistors, compatible with industry-standard silicon MOSFET packages, enable easy multi-sourcing and complementary layouts for silicon-based designs. The 100-V IGD015S10S1 provides a typical on-resistance of 1.1 mΩ. The 80-V IGE033S08S1 has a typical on-resistance of 2.3 mΩ. Their new packages, combined with GaN technology, ensure low-resistance connections and minimal parasitics.

Infineon’s chip and package combination enhances robustness in thermal cycling and improves thermal conductivity. The larger exposed surface area and higher copper density aid in better heat distribution and dissipation.

Samples of the IGE033S08S1 and IGD015S10S1 GaN transistors in RQFN packages will be available in April 2025. For more information, click here.

Infineon Technology

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Low-power 32-bit MCUs in the Renesas RA4L1 group integrate a segment LCD controller, capacitive touch sensing unit, and robust security. Based on an 80-MHz Arm Cortex-M33 processor with TrustZone support, the MCUs can be used for metering, IoT sensing, smart locks, and home appliances.

RA4L1 microcontrollers operate down to 1.6 V, consuming 168 µA/MHz when active and just 1.70 µA in standby mode with all SRAM retained. The series, which comprises 14 devices, offers 256 KB or 512 KB of dual-bank code flash, 64 KB of SRAM, and 8 KB of data flash. They provide a variety of peripherals and a wide range of communication interfaces.

In addition to Arm Trust Zone, the MCUs feature Renesas Secure IP (RSIP-E11A) supporting AES, ECC, hash value generation, and a 128-bit unique ID. They offer up to three tamper pins and secure pin multiplexing. The devices come in a variety of small packages, including a 3.64×4.28-mm WLCSP.

The RA4L1 MCUs, along with an evaluation board and capacitive touch starter kit, are available now. Samples and kits can be ordered from the Renesas website or distributors.

RA4L1 series product page

Renesas Electronics

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Compact and lightweight, the R&S ADD507 direction finding (DF) antenna covers 9 MHz to 8 GHz, reducing the need for multiple antennas. Expanded VHF coverage improves weak signal detection, making the antenna well-suited for mobile interference hunting, emitter tracking, and close-range monitoring.

The ADD507 features active and passive antenna elements with an active/passive switch that adjusts to the signal environment with a mouse click. Passive mode bypasses all active components, boosting resistance to strong unwanted signals.

Antenna polarization is vertical, and system DF accuracy is typically 2° RMS in a reflection-free environment. The AD507 is approximately 0.33×0.27 m (13×10.63 in.) and weighs about 4.5 kg (9.9 lb). An optional vehicle adapter with a magnetic mount simplifies roof mounting.

To request pricing information for the ADD507 DF antenna, use the product page link below.

ADD507 product page

Rohde & Schwarz 

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The RClamp10022PWQ two-line transient voltage suppressor (TVS) from Semtech safeguards automotive Ethernet interfaces against ESD. It meets Open Alliance standards for 10Base-T1S, 100Base-T1, and 1000Base-T1, ensuring reliable Ethernet connectivity for advanced driver assistance systems and autonomous driving.

Leveraging solid-state silicon avalanche technology, the bidirectional TVS offers a trigger voltage greater than 100 V and a deep snap-back characteristic to minimize ESD clamping voltage. The RClamp10022PWQ provides ±15-kV contact (1000 discharges) and ±25-kV air discharge protection per IEC 61000-4-2, surpassing automotive requirements. Its low capacitance of 0.6 pF maximum ensures signal integrity in high-speed networks.

AEC-Q101 qualified, the RClamp10022PWQ operates over a temperature range of -40°C to +125°C. It comes in a 5-lead, 2.0×1.0×0.55-mm DFN package with side wettable flanks for automated optical inspection.

RClamp10022PWQ product page

Semtech

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Frontgrade has successfully screened its GaN DC/DC converter and complementary EMI filter to MIL-PRF-38534 Class L requirements. Under the Defense Logistics Agency’s specification, Class L screening ensures these devices meet stringent performance requirements for space missions, from Low Earth Orbit (LEO) to Geostationary Earth Orbit (GEO).

The 51028xxx series of 28-V single-stage converters uses GaN FET technology for efficient power conversion, achieving 93% efficiency at half load. With faster switching and enhanced performance, the GaN-based devices respond quickly to dynamic power demands and provide multiple voltage outputs from 0.8 V to 12.0 V. Direct power conversion from the bus to the point of load ensures optimal performance for both current and future space applications.

Frontgrade’s 51028xxx converters are efficient isolated step-down regulators rated at 50 W, with a total dose radiation tolerance of 50 krads (Si) and immunity to SEL/SEB/SEGR up to 60 MeV-cm²/mg. Output voltage remote sense provides accurate point-of-load voltage regulation.

Flight and engineering modules, along with evaluation test boards, are available to support development, testing, and deployment in mission-critical spacecraft systems.

51028xxx series product page

Frontgrade Technologies

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