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High-current SMD shunt resistors features 0.1 milliohm resistance

Posted on by mixos

Stackpole Electronic’s HCS high current SMD shunt resistors are now offered in a 0.1 milliohm resistance value in a 10W,5930 chip size. It has an all-metal welded construction with a raised resistance element. This offers more efficient thermal conduction, enabling the device to handle higher currents with lower self-heating than equivalent flat chips, which is essential in maintaining battery temperatures.

Modern electric power systems continue to push the power envelope. Power electronics for EVs often employ a high-power low resistance shunt resistor which can be expensive and difficult to find.

This device is a favored option for high-power lighting controls, power supply management, robotics, electric motor controls, electric power tools, and automotive and industrial equipment controls.

more information: https://www.seielect.com

BeagleBoard BeagleBone® AI-64

Posted on by mixos

BeagleBoard BeagleBone® AI-64 presents a complete AI and Machine Learning System with the convenience and expandability of the BeagleBone platform. The BeagleBone AI-64 offers onboard peripherals to get started immediately learning and building applications.

The BeagleBoard BeagleBone AI-64 delivers a massive amount of computing power in an easy-to-use platform to build everything from autonomous robots to building automation. To start building performance-optimized embedded applications users require a locally hosted, ready-to-use, open-source-focused toolchain, and development environment, a simple web browser, power source, and network connection. Expansion possibilities are achieved through standard BeagleBone cape headers, with hundreds of open-source hardware examples and dozens of readily available embedded expansion options available off-the-shelf.

Features

  • Expandability
    • BeagleBone® cape header compatibility for expansion with existing add-on boards
    • ikroBUS™ Shuttle header giving access to hundreds of existing Click™ sensors and actuators
  • Memory
    • 4GB LPDDR4
    • 16GB eMMC flash with high-speed interface
    • MicroSD card slot
  • High-speed interfaces
    • M.2 E-key PCIe connector to interface with Wi-Fi®/BLUETOOTH® adapters
    • USB 3.0 Type-C SuperSpeed interface for power input and data
    • 2 USB 3.0 Type-A SuperSpeed interface
    • Gigabit Ethernet
  • Camera and Display Connectors
    • Mini DisplayPort interface
    • 2x 4-Lane CSI connector for popular camera options
    • 4-Lane DSI connector for popular display options
  • User interfaces
    • 1 Boot button, 1x Reset Button, 1x Power button
    • 1 Power indication LED, 5x User LEDs
    • 5V DC input power
    • 2 UART debug
    • JTAG 10pin Tag-Connect™ for debugging
  • TDA4VM Dual 64-bit Arm® Cortex®-A72, 2.0GHz processor feature:
    • C7x floating point, vector DSP, up to 1.0GHz, 80GFLOPS, 256GOPS
    • Deep-learning matrix multiply accelerator (MMA), up to 8 TOPS (8b) at 1GHz
    • Vision Processing Accelerators (VPAC) with Image Signal Processor (ISP) and multiple vision assist accelerators
    • Depth and Motion Processing Accelerators (DMPAC)
    • Dual 64-bit Arm® Cortex-A72 microprocessor subsystem at up to 2GHz
    • 1MB shared L2 cache per dual-core Cortex-A72 cluster
    • 32KB L1 D Cache and 48KB L1 I Cache per Cortex-A72 core
    • Six Arm® Cortex-R5F MCUs at up to 1GHz
    • Two C66x floating-point DSP, up to 1.35GHz, 40GFLOPS, 160GOPS
    • 3D GPU PowerVR® Rogue™ 8XE GE8430, up to 750MHz, 96GFLOPS, 6 Gpix/sec
    • Memory subsystem with up to 8MB of on-chip L3 RAM with ECC and coherency
    • Twelve Multichannel Audio Serial Port (MCASP) modules

more information: https://beagleboard.org

Doogee S89 Series Powerhouse

Posted on by mixos

The now infamous Doogee S89 Series as reported earlier is expected to make an August 22nd launch on AliExpress and Doogeemall. The S89 series is the latest rugged phone from the Chinese manufacturer and packs a powerful 12000mAh battery. The company claims it is the first and only rugged phone that will ship with a 65W charger.

Having a big battery is a dream come true for wildlife lovers. The S89 series will give you three to five days of active use depending on user habits. This is awesome for long-haul drivers, hardcore campers, and off-grid people. It will also give you amazing mileage on other activities too. E.g. you can get up to 16 hours of gaming on a single charge, 18 hours on streaming, and many more visit the official S89 series to learn more.

Juicing up such a massive battery requires the right tool for the job. The S89 Pro will set a record of being the first rugged phone to ship with a 65W fast charger. It can charge the battery from 0 to 100% in just two hours.

One thing that makes this series unique is its RGB light effect marketed as “breathing light”. It is a backlight just like the nothing phone (1) but with more customization options, functions, and colours. Everything from light colours, patterns and speed are some of the options a user can tweak to their liking. Just like the nothing phone, the breathing light effect can be assigned to phone functions such as incoming calls, and notifications or just sync it to music like an equalizer.

Aside from the above-mentioned two main features, the S89 series’ other features include a tri-camera setup on the back, MediaTek Helio P90 chipset, 8GB RAM up to 256GB ROM, NFC, Android 12 OS, IP68, IP69K ratings, MIL-STD-810H certification, custom button, reverse charging, and many more.

As mentioned earlier, on August 22nd, the S89 series will debut on AliExpress and Doogeemall. As part of a discount program, the S89 series will see its prices slashed for a limited time.

From the global launch day to August 26th, both devices in this series will see a 50% discount on their price. The S89 Pro will retail for $229.99 USD instead of its original price of $459.98 USD.  After the discount, the price of the vanilla version will drop to $199.99 USD from $399.98 USD.  If you are among the first 200 people to place an order, you can get a $10 coupon for a further discount on your purchase.

Just a reminder, the discount offer is only available between August 22nd and 26th. After the deadline, the smartphones will return to their original prices.

Finally, the winners of the giveaway will be announced. To learn more about the product, click here to visit the official S89 series webpage.

Melexis MLX90381 3D Magnetic Pico-Resolvers

Posted on by mixos

Melexis MLX90381 3D Magnetic Resolvers are easy to use in rotor position detection. The MLX90381 improves the low-speed accuracy, noise performance, and supports stall detection. It can be used with DC, brushless DC (BLDC), and permanent magnet synchronous motors (PMSM) in applications like e-valves and e-bike motors.  It can be used in automotive safety-related systems as it is AEC-Q100 qualified and ASIL B ready (Safety Element out of Context according to ISO 26262).

Features

  • Onboard programming through the I2C protocol
    • Programmable at a module level
  • ISO 26262 ASIL B SEooC (Safety Element out of Context)
  • AEC-Q100 Qualified
  • Triaxis® Hall technology
  • Sine and Cosine analog outputs
  • Output refresh rate 2µs
  • Ratiometric outputs
  • Operating supply voltage 3.3V
  • Operating temperature from -40°C to 160°C
  • Selectable magnetic field axis (X/Y – X/Z – Z/Y)
  • Programmable sensitivity range
    • mid field (10…70mT)
    • high field (40…160mT)
  • End-of-shaft / through-shaft operation
  • Package, RoHS Compliant DFN-6 (LW) single die

more information: https://www.melexis.com/en/product/MLX90381/Triaxis-Magnetic-Pico-Resolver

Texas Instruments’ TPS22992 6 A Load Switch

Posted on by mixos

Texas Instruments’ single-channel switch features adjustable rise time and adjustable quick output discharge (QOD)

Texas Instruments’ TPS22992 is a single-channel load switch with an 8.7 mΩ power MOSFET that is designed to maximize power density in applications up to 5.5 V and 6 A. A configurable rise-time provides flexibility for power sequencing and minimizes inrush current for high capacitance loads. The switch is controlled by an enable-pin (ON) which is capable of interfacing directly with low-voltage GPIO signals (VIH = 0.8 V).

The TPS22992 has an optional QOD pin for when the switch is turned off and the fall-time (tFALL) of the output can be adjusted through an external resistor. The Power-Good (PG) signal on the device indicates when the main MOSFET is fully turned on, which can enable a downstream load.

The device comes with thermal shutdown to ensure protection in high temperature environments. The TPS22992S integrates overcurrent protection, preventing damage to the device if the output is shorted to ground during operation or startup. For small form-factor applications, a 1.25 mm x 1.25 mm, 0.4 mm pitch 8-pin WQFN package is available. A wider 0.5 mm pitch package version (TPS22992 only) is also available. The device provides operation over the free-air temperature range of -40°C to +125°C.

Application Diagram

Features

  • Operating input voltage range (VIN):
    • TPS22992: 0.1 V to 5.5 V
    • TPS22992S: 1 V to 5.5 V
  • Bias voltage supply (VBIAS): 1.5 V to 5.5 V
  • Continuous current: 6 A (max.)
  • On-resistance (RON): 8.7 mΩ (typ.)
  • Adjustable slew rate control
  • Adjustable QOD
  • Open-drain PG signal
  • Low power consumption:
    • TPS22992: ON-state (IQ): 10 µA (typ.)
    • TPS22992S: ON-state (IQ): 30 µA (typ.)
    • OFF-state (ISD): 0.1 µA (typ.)
  • Short-circuit protection (TPS22992S only)
  • Thermal shutdown
  • Smart ON pin pulldown (RPD,ON):
    • ON ≥ VIH (ION): 25 nA (typ.)
    • ON ≤ VIL (RPD,ON): 500 kΩ (typ.)

more information: https://www.ti.com/product/TPS22992

NXP FXLS89xx Series Accelerometers

Posted on by mixos

NXP’s three-axis accelerometers are ideal for automotive, IoT, and medical applications

NXP’s FXLS8964AF is a compact three-axis accelerometer designed for applications requiring ultra-low-power wakeup when detecting motion. The combination of sensor performance, system power-saving features, and extended overtemperature-range performance makes the FXLS8964AF an ideal accelerometer for automotive key fob applications.

The FXLS8967AF is a compact three-axis MEMS accelerometer designed for use in a wide range of automotive security and convenience applications that require ultra-low-power wakeup when detecting motion. The combination of sensor performance, system power-saving features, and extended overtemperature-range performance makes the FXLS8967AF an ideal accelerometer for automotive security and convenience applications.

The FXLS8974CF is a compact three-axis MEMS accelerometer designed for use in a wide range of industrial and medical IoT applications that require ultra-low-power wake-up when detecting motion. The part supports both high-performance and low-power operating modes, allowing maximum flexibility to meet the resolution and power needs for various unique use cases. The combination of sensor performance, system power-saving features, and extended overtemperature range performance makes the FXLS8974CF an ideal accelerometer for motion sensing in the IoT.

The FXLS8964AF and FXLS8967AF devices are AEC-Q100-qualified and operate over the extended -40°C to +105°C temperature range. These parts support both high-performance and low-power operating modes, allowing maximum flexibility to meet the resolution and power needs for various unique use cases.

FXLS89xx devices are available in a 2 mm x 2 mm x 0.95 mm, ten-pin DFN package with a 0.4 mm pitch and wettable flanks.

These smart sensors include advanced digital features such as the SDCD block for inertial event detection, auto wake/sleep, 32 sample FIFO/LIFO buffer, and a single-wire interface, ensuring overall power savings and simplified host data collection.

Features

  • Ultra-low power: less than 1 µA in low-power wake-up mode (0.78 Hz to 6.25 Hz ODR)
  • Sensor data change detection (SDCD) function: highly configurable digital window comparator for easy and efficient implementation of low-power motion detection
  • Self-test diagnostic: can be run in the field to assess device health (unaffected by device orientation or motion)
  • ±2 to ±16g (user selectable) full-scale range
  • 12-bit sensor data output resolution
  • I2C/SPI (pin-configurable) digital interfaces
  • 2×2 DFN package, 0.4 mm pitch with wettable flanks
  • -40°C to +105°C operating temperature, AECQ-100 auto/industrial qualified
  • EMC class III compliant

more information: https://www.nxp.com/products/sensors/accelerometers/2g-4g-8g-16g-low-power-12-bit-digital-accelerometer:FXLS8964AF

XS Series Fingertip Joystick

Posted on by mixos


APEM’s XS series joystick features low-profile, robust, proportional fingertip controllers

APEMs’ XS series is a two-axis Hall effect joystick featuring a reduced panel height to provide precise fingertip control. Measuring less than 45 mm, the XS allows for unimpeded access to other devices located on the control panel. This compact, low-profile design reduces the risk of inadvertent operation and damage when mounted in handheld mobile devices that are prone to accidental drops. The XS series includes redundant Hall effect sensors for more than 10 million operations. It is IP66 above panel sealed and considered Sil2 compatible, making it the ideal solution for outdoor applications where safety is critical.

Features

  • One or two axis
  • Metal mechanism
  • IP66 front panel sealed
  • Analog or PWM outputs
  • Low profile, less than 45 mm above panel

Specifications

  • 3.3V or 5V operating voltages
  • ±10% x V to ±50% x V output voltage range
  • 10Ω output impedance
  • +20V maximum overvoltage
  • 10 million lifecycles
  • <45mm profile above panel
  • Stainless steel shaft
  • Neoprene boot
  • Nylon handles
  • -30°C to +85°C operating temperature range

more information: https://www.apem.com/int/xs-series-553.html

Ultra low Noise RF Voltage Regulator TPS7A94

Posted on by mixos

Recently Texas Instruments unveils Ultra-low Noise RF Voltage Regulator TPS7A94. This device is a low noise 0.46μVrms, Low Dropout (LDO) voltage Regulator. It can provide output current up to 1A with only 200mV of maximum dropout. It can operate with a minimum of 1.7V to maximum 5.7V input and gives a maximum output voltage 5.5V with a maximum current of 1A. In this device, we can adjust the current limit TPS7A94 allows programmable PG threshold, and precision enable.

TPS7A94 has high accuracy reference and wide bandwidth utility gain follower LDO, this device can be easily paralleled to achieve lower noise and high current output.

With its 1 percentage output voltage accuracy and soft start capabilities to reduce inrush current, this device is a good choice for powering sensitive analog low voltage devices such as VCOs (Voltage Control Oscillators), ADCs (Analog to Digital Converters), DACs (Digital to Analog Converters) and FPGAs (Field Programmable Gate Arrays).

This device Comes in WSON (10) Package and has 3.0 mm X 3.0 mm body size. For more information Product page.

Melexis enhances 3D magnetic position sensors

Posted on by mixos

Melexis delivers a cost-optimized family of 3D magnetic position sensors with performance enhancements for automotive applications.

Melexis has expanded its portfolio of 3D magnetic position sensors with the introduction of the MLX9042x series. These sensors are designed for automotive applications that need to measure absolute position accurately in harsh and noisy environments over an extended temperature range. These include powertrain actuators, transmission sensors, pedal position sensors, and chassis sensors. The sensors also can be used in industrial applications.

Building on the MLX9036x product family, the new MLX9042x portfolio delivers a cost-optimized series with all the core features, said the company, along with functional safety and EMC enhancements, an extended improved operating temperature range, and improved stray magnetic field capabilities.

Based on the company’s Triaxis Hall sensor technology, the MLX9042x devices all feature analog signal conditioning, data conversion and signal processing, as well as output stage drivers.

The initial devices in this series are the following:

  • MLX90421: rotary and linear use, with analog or PWM output
  • MLX90422: rotary and linear use, with SENT output
  • MLX90423: linear stray field immune with either analog, PWM, or SENT output
  • MLX90425: rotary 360° stray field immunity with analog or PWM output
  • MLX90426: rotary 360° stray field immunity with SENT output

These devices are ASIL B ready (per ISO 26262), enabling the design of functionally safe actuators and sensors for safe vehicle operation. Dual-die versions are available, in addition to the single-die chips, for applications that require higher levels of safety and availability.The MLX9042x devices offer similar performance as the products in the MLX9037x family to ensure first-time-right EMC testing, said the company, requiring only one test cycle. The high absolute maximum ratings (AMR), including reverse polarity, reduce the number of quality incidents due to electrical overstress, according to the company.

The 3D magnetic position sensors feature an extended temperature range of -40°C to 160°C. This allows the devices to operate in hot environments, including engine compartments or where start-stop conditions cause increased heat soaks.

The MLX90423, MLX90425 and MLX90426 sensors also offer improved stray magnetic field capabilities. These devices are capable of rejecting stray magnetic fields up to 5 mT or 4000 A/m in rotary and linear position sensing applications.The AEC-Q100-qualified MLX9042x devices can be supplied in SMD packages or in SMP-3 and SMP-4 PCB-less packages (where the sensor and EMC capacitors are integrated into a single mold). Samples are available for the MLX90421/22 in SOIC-8/TSSOP-16/DMP-4/SMP-3/SMP-4 packages and the MLX90425/26 in SOIC-8/SMP-3 packages (more to come later). The MLX90423 will be available for order in November 2022. The company expects to add other products in the future.

Learn more about melexis

Buck converter adds adaptive power sharing

Posted on by mixos

Silanna Semiconductor claims the industry’s first buck converter with intelligent adaptive power sharing for multi-port fast chargers.

Silanna Semiconductor has claimed the first buck converter power IC to feature intelligent adaptive power sharing. The SZPL3002A buck converter with a built-in USB PD/FC port controller will significantly reduce component count to implement 65-W fast charger and adapter applications with up to four ports, said the company.

The SZPL3002A combines a high-efficiency synchronous buck converter and an advanced port controller in a QFN package measuring  5 × 5 mm. It is built on the company’s wide-voltage, high-frequency point-of-load DC/DC converter technology with higher than 98% efficiency.

The integrated port controller supports USB PD V3.0 Type C interfaces and QC2.0/3.0/4.0/5.0 support for Type A/C connections. The controller’s job is to ensure that the port power adapts to the device’s requirements, delivering power sharing and port power re-balancing functionality across two, three or four ports.

High-Efficiency (>98%) Synchronous Buck Converter

  • Selectable Switching Frequency: 667kHz to 2MHz
  • 3.3V to 21V Output at 3.25A (covers PD + PPS)
  • 7V to 27V Input
  • 41mohms upper FET, 38mohms lower FET
  • Selectable power saving mode
  • Selectable soft start time
  • Full protection features such as OCP, OVP, OTP
  • I2C bus for communication
  • All surface mount components solution
  • Available in small QFN 5 mm X 5 mm thermally enhanced package

Integrated with Most Advanced Port Controller

  • Provide a complete USB Port Power supply
  • Full Support for USB PD V3.0 – Type C
  • QC2.0/3.0/4.0/5.0 Support for Type A/C Ports
  • USB-IF certified
  • Calculated, Adaptive Power Sharing
  • Power Sharing Across 2, 3 or 4 Ports
  • Includes Port Power Re-Balancing
  • Power Throttling at Elevated Temperature
  • Integrated VCONN Power Supply
  • 5 Power Profiles (Resistor-Selectable)

The power IC is the first to use an integrated USB-PD controller, microcontroller, and VCONN cable communications protocol in a DC/DC buck converter, according to the company.

Thanks to the five selectable pre-loaded power contract configurations, designs can use a single ZPL3002A across multiple product designs.

“Power re-balancing allocates under-used power on previously connected ports, while protective power throttling automatically reduces current when temperature thresholds are reached,” said Silanna.

Hubie Noto, director of product marketing, Silanna Semiconductor explained:

“The SZPL3002A offers one fully programmable contract set plus four pre-programmed sets that are chosen with an external resistor value,” said “Traditional charger PD ports offer a selection of fixed contracts to a device based on available power. These are programmed into the port controller and are based on various voltage and current levels a device might use when connecting. Each port has different power contracts for different power.”

The buck converter offers a selectable switching frequency from 667 kHz to 2 MHz and a 7-V to 27-V input range. The device provides a 3.3-V to 21-V output at 3.25 A (which covers PD + PPS). The RDS(on) of the upper FET is 41 mΩ and 38 mΩ for the lower FET. Other features include a selectable power save mode, selectable soft start time, and protection features such as overcurrent protection (OCP), overvoltage protection (OVP), and overtemperature protection (OTP). It comes with an I2C communication interface.

Application Diagram

Key accounts are sampling the SZPL3002A buck converter. It will be released to the general industry in the second half of 2022.

Learn more about Silanna Semiconductor

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