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| Isolated Output Driver Eyes Industry 4.0 Factory Migration
Analog Devices (ADI) has announced the ADuM4122, an isolated, dual-drive strength output driver that uses iCoupler technology. It's designed to empower designers to harness the benefits of higher efficiency power switch technologies. Electric motor-driven systems account for 40% of global electricity consumption, according to the International Energy Agency, and improvements in motor efficiency can have wide-reaching economic and environmental benefits. With the increased adoption of industrial automation and IoT within smart factories, there is a growing demand for intelligent technology and features within systems to ensure maximum efficiency. ADI claims that the ADuM4122 is the first simple solution that accomplishes this by controlling how fast or slow a MOSFET or IGBT turns on or off by user command, on the fly, thereby controlling motor currents.
Single-Chip Motor Driver Enables Virtually Silent Motor Operation
Trinamic Motion Control has unveiled an ultra-small single-chip motor driver that uses StealthChop technology to enable virtually silent operation. The device is designed to drive two-phase stepper motors up to 1.2 A RMS and with a voltage range of 1.8 VDC to 11 VDC. With a standby current draw of < 50 nA, it can provide a solution that requires only one or two Li-Ion cells or two AA batteries. The TMC2300 incorporates three exclusive Trinamic technologies: StealthChop2: A high-precision algorithm that produces drive waveforms which enable motors to be inaudible---both in motion and at standstill; StallGuard: Sensorless motor load measurement, a combination of on-chip circuitry and firmware that enables the driver to perform sensorless homing and detect mechanical obstacles; and CoolStep Sensorless: Load-dependent current control that optimizes the motor's energy consumption on the fly, enabling energy savings of up to 80% over conventional motor drives, according to Trinamic.
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| Family of 2.5 A Buck-Boost Converters Feature Tiny Footprint Texas Instruments (TI) has introduced a family of four high-efficiency, low-quiescent-current (IQ) buck-boost converters that feature tiny packaging with minimal external components for a small solution size. The integrated TPS63802, TPS63805, TPS63806 and TPS63810 DC/DC noninverting buck-boost converters offer wide input and output voltage ranges that scale to support multiple battery-driven applications, helping engineers simplify and accelerate their designs. 
Each of the devices in the family automatically selects buck, buck-boost or boost mode according to the operating conditions. Their complete solution size of 19.5 mm² to 25 mm²---up to 25% smaller than similar devices---is a result of compact packaging, an advanced control topology requiring few external multilayer ceramic capacitors and tiny 0.47-µH inductors. The devices offer a wide 1.3-V to 5.5-V input and 1.8-V to 5.2-V output voltage range, which helps engineers speed their designs and encourages reuse across multiple applications.
Win a Free 2018 Circuit Cellar Digital Archive! This week's newsletter raffle is for a 2018 Digital Archive of Circuit Cellar magazine. Enter the drawing using the link below. The archive gives you access to view the twelve 2018 issues of Circuit Cellar. Your archive can be viewed in an online flip book or you can download the PDF copies. A $40 value! Drawing ends at midnight this coming Friday.
And congratulations to last week's raffle winner, Geoff C., who won a 1 year subscription to Circuit Cellar. Thanks to all who participated! |
Get Your Technical Article Published in Circuit Cellar Magazine
 Circuit Cellar magazine is always looking for top-notch technical articles that help readers better understand embedded electronics technology in action. Professional engineers, academics, students and serious electronics enthusiasts are encouraged to submit articles and proposals. Whether its a project-based article, an article about a technology trend, or an analysis of a technical issue or challenge, Circuit Cellar is looking for insightful, detailed articles that help its readers do their jobs as embedded system designers. If you have an article or an article proposal, let us know! Our article submissions page provides you with our requirements and guidelines. 1/16th Brick DC-DC Converter Provides 9-36 VDC Voltage Input Murata has announced the introduction of its UWS-Q12 series, the latest in a line of 50 W, 9-36 Vin range DC-DC converters. This series was developed for a wide range of applications including, network equipment, industrial, railway, power grid and transportation. In an industry standard 1/16th brick pinout, the solution provides a basic I/O insulation system rated at 2,250 VDC isolation with a fully regulated DC output. The series also offers single output modules with outputs of 3.3 V, 5 V, 12 V, 15 V, and 24 V DC all rated at 50 W. Furthermore, with a universal Vin range, requirements for Intermediate Bus Converter (IBC) architecture are readily met. The UWS-Q12 series provides numerous standard features including positive or negative ON/Off control, output over current protection, over temperature protection, Input under Voltage lock-out, short circuit protection, Pre-Bias protection, Vout trim and Vout sense function. Enter to Win VersaLogic's New Android Demo/Eval Kit!  VersaLogic's new Android Eval Kit provides an easy way to evaluate Arm/Android performance for rapid design and application development. It includes everything needed to run the Android OS on a high-reliability embedded system, including an Arm-based embedded computer board and a touch-screen display. No additional carrier cards, companion boards or other add-ons are needed. The Android Eval Kit is designed to save start-up time and allow the user to focus on their product development. 3 W AC-DC Supply Offers 1.1" x 0.9" Form Factor RECOM has introduced the RAC03-K which it claims is the smallest 3 W AC-DC power supply solution on the market. This converter can be used in a wide range of applications due to complete certifications for ITE and household standards. In a compact 1 in² footprint, these modules deliver an output power of 3 W from -40°C to 60°C and 2 W up to 80°C. Despite such a high power density and small footprint, the RAC03-K series is a complete solution supporting Ecodesign Lot 6 standby mode operation for worldwide applications in automation, Industry 4.0, IoT, household and home automation. With an input voltage range from 85 to 264 VAC and international safety certifications for industrial, domestic, ITE, and household applications, RECOM claims these are some of the most versatile power modules on the market. SlingShot is Offering Free Labor for 1st Time Customers! They are changing the game in PCB assembly. Doing the impossible, everyday. For a limited time, SlingShot Assembly is offering FREE LABOR, up to $1,000, on new customers' first turn-key order. Their 5-day turn includes parts, boards AND assembly. SlingShot Assembly challenges you to try something different. (Only a limited number of offers available each day
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