Wolfspeed Delivers Industry's First 1000V SiC MOSFET
10.20.2016 · News
Wolfspeed, a Cree Company has introduced a 1000 V MOSFET that enables a reduction in overall system cost, while improving system efficiency and decreasing system-size. The new MOSFET, specially optimized for fast charging and industrial power supplies, enables a 30 percent reduction in component-count while achieving more than 3x increase in power density and a 33 percent increase in output power. With the introduction of its 1000 V SiC MOSFET, Wolfspeed leads the market with the industry’s most complete device portfolio...
LED inventor bets on lasers to replace LEDs
10.20.2016 · Articles
The inventor of the blue LED, Dr Shuji Nakamura, says laser diodes are the future of lighting – and have compelling advantages over LED. Next week he will unveil a new company to commercialise the technology in a move that will focus the attention of the lighting industry on the potential visible laser sources...
Cayenne dashboard simplifies IoT project building on Raspberry Pi
myDevices company has recently announced a platform to create Internet of Things (IoT) projects based on the Raspberry Pi (RPi) single-board computer. This project builder called Cayenne and first presented at the IoT Evolution Expo conference is designed not only for amateurs, but for professionals too. One is able to create an unlimited number of projects after free registration of account in the Cayenne cloud service...
20V, 500mA LDO with Ultralow (0.8μVRMS) Noise & 76dB PSRR at 1MHz Powers Noise-Sensitive Applications
10.19.2016 · News
Linear Technology Corporation announces the LT3045, an ultralow noise, ultrahigh power supply ripple rejection (PSRR) low dropout voltage linear regulator, a higher output current version of the widely accepted 200 mA LT3042 ultralow noise LDO. The LT3045’s unique design features ultralow spot noise of only 2 nV/√Hz at 10 kHz and 0.8 μVRMS integrated output noise across a wide 10 Hz to 100 kHz bandwidth...
Engineers Develop Flexible Skin That Traps Radar Waves, Cloaks Objects
10.18.2016 · Articles
Iowa State University engineers have developed a new flexible, stretchable and tunable "meta-skin" that uses rows of small, liquid-metal devices to cloak an object from the sharp eyes of radar. The meta-skin takes its name from metamaterials, which are composites that have properties not found in nature and that can manipulate electromagnetic waves. By stretching and flexing the polymer meta-skin, it can be tuned to reduce the reflection of a wide range of radar frequencies...
Signal analyser delivers continuous-sweep from 3 Hz to 110 GHz
10.18.2016 · News
Boasting industry-leading continuous frequency coverage from 3 Hz to 110 GHz, with displayed average noise level as low as –150 dBm/Hz above 50 GHz, the Keysight N9041B UXA X-Series signal analyzer claims to be the first to provide frequency coverage to 110 GHz with a maximum analysis bandwidth of up to 5 GHz...
High Voltage CMOS Amplifier Enables High Impedance Sensing with a Single IC
10.17.2016 · Circuits
Accurately measuring voltages requires minimizing the impact of the instrument connection to the tested circuit. Typical digital voltmeters use 10 M resistor networks to keep loading effects to an inconspicuous level, but even this can introduce significant error, particularly in higher voltage circuits that involve high resistances. The solution is to use high impedance amplifiers in an electrometer configuration, so only miniscule amplifier input current comes from the test node. To make the input current the lowest possible value, field-effect transistors are traditionally employed at the inputs of these circuits...
Programmable Dimming LED Driver from Diodes Incorporated with Integrated 30V MOSFET and Schottky
10.17.2016 · News
Diodes Incorporated introduced the AL3050. This current-mode boost-type LED driver provides programmable brightness for LED backlighting of portable devices. Its advanced dimming features, small solution size, low BOM-cost and high efficiency make it well-suited for use in single-cell Li-ion based equipment with smaller LCD panels, such as feature/smart phones, portable media players, GPS receivers and other ultra-mobile devices. With an integrated 30 V 0.6 Ω MOSFET and power Schottky diode, the AL3050 can drive up to eight LEDs in series with the capability to connect multiple LED strings in parallel...
Limit inrush current in high-power applications
10.13.2016 · Circuits
A high-power offline supply is nothing more than a half- or full-bridge dc/dc converter. Rectifying the ac line yields a dc voltage that feeds the converter. At power-supply turn-on, the bulk capacitor of the uncontrolled rectifier is completely discharged. It results in a huge charging current for a high instantaneous line voltage because the discharged bulk capacitor temporarily short-circuits the diodes of the rectifier stage. This can result in a large charging current for a high instantaneous line voltage because the discharged capacitor temporarily short-circuits the power supply’s diode bridge. The high inrush current can trigger a mains circuit breaker, burn a fuse, or even destroy a power supply’s rectifier diodes unless you take precautions...
Allegro Microsystems, LLC Introduces New Dual Full-Bridge PWM Motor Driver IC
10.13.2016 · News
Allegro MicroSystems, LLC announces a new 40 V dual full-bridge driver capable of driving two DC motors with outputs rated up to 3.2 A. Allegro’s A5995 device includes fixed off-time pulse-width modulation (PWM) regulators for current control. Each DC motor can be controlled in forward, reverse, coast and brake modes with industry standard PHASE, ENABLE inputs. Fast or slow PWM current decay is selected via the MODE input...