Dual-output nonisolated SMPS powers appliances
04.26.2017 · Circuits
Modern appliances offer a range of features that rely heavily on microcontrollers and auxiliary circuits. Although conventional iron-core transformers can provide ac line-isolated, low-voltage power for a microprocessor, coupling the processor’s control signals to line-side power switches requires yet another layer of electrical isolation, such as optocouplers or pulse transformers...
Project Diana bounces radio waves off moon, January 10, 1946
04.26.2017 · Articles
The US Army Signal Corps made the first attempt to "touch" another celestial body when on January 10, 1946, it bounced radio signals off the moon and received the reflected signals. Dubbed "Project Diana" for the Roman moon goddess, the effort led to what is today known as EME (Earth-Moon-Earth) communications, used for ham radio...
Dialog Semiconductor Unveils First 10A Inductorless Power Converter with over 98% Power Efficiency
04.26.2017 · News
Dialog Semiconductor unveiled the first of a new series of charging products and one of the world’s most efficient switched capacitor DC/DC converters, the DA9313. The groundbreaking design of the DA9313 offers high peak efficiency and can power more than 50 W in less than 10 mm2 of board area, allowing developers to extend battery life and reduce charging time...
Step-Down Converter Delivers 25A at 12VOUT from Inputs Up to 60V
04.26.2017 · Circuits
The LTC3890 (dual outputs) and LTC3891 (single output) step-down DC/DC controllers directly accept inputs from 4 V to 60 V. This wide input range covers input voltages for single or double battery automotive environments, thus eliminating the need for snubbers and voltage suppression circuitry typically required to protect ICs during load dumps...
IXYS Introduces 1200V SiC Schottky Diode in SOT-227 Packages for Higher Power Applications
04.26.2017 · News
IXYS Corporation announced the availability of the DCG85X1200NA and the DCG100X1200NA, both dual 1200 V rated SiC Schottky diodes in SOT-227 packages, the MiniBLOCTM, fully isolated. The DCG85X1200NA and the DCG100X1200NA both offer two SiC Schottky diodes with an average forward current of 43 Amps and 49 Amps, respectively...
32-Bit SAR ADC with 0.5ppm Linearity Provides 148dB Dynamic Range
04.24.2017 · News
Analog Devices, Inc., which recently acquired Linear Technology Corporation, announces the LTC2500-32, an ultrahigh precision 32-bit successive approximation register analog-to-digital converter. The LTC2500-32 is a new and enabling approach for precision measurement applications, blending the high accuracy and speed of Linear Technology’s proprietary SAR ADC architecture...
The basics of Bluetooth Low Energy
04.24.2017 · Articles
Bluetooth technology has revolutionized wireless communications between devices with its ubiquitous and simple characteristics. It allows devices to communicate without cables while maintaining high levels of security. Because of its low power and low cost, Bluetooth has played a pivotal role in the evolution of applications from high-speed automotive devices to complex medical devices...
One Device Replaces Battery Charger, Pushbutton Controller, LED Driver and Voltage Regulator ICs in Portable Electronics
04.21.2017 · Circuits
The LTCR3577/LTC3577-1 integrates a number of portable device power management functions into one IC, reducing complexity, cost and board area in handheld devices...
SII Semiconductor Corporation Introduces a New Hall Effect Switch IC with Magnet Polarity Discrimination
04.21.2017 · News
SII Semiconductor Corporation, a subsidiary of Seiko Instruments Inc., introduces the S-5718 series of Hall effect switch ICs that allow switching between omnipolar detection, N pole detection and S pole detection on a single IC. When used in combination with a microcontroller, the S-5718 can identify the polarity of nearby magnets...
Prevent Oscillations in Supercapacitor Power Supplies
04.20.2017 · Circuits
This circuit, based on discrete transistors and diodes, develops hysteresis to resolve and avoid the non-stop turn-on/off cycling that may otherwise occur when using supercapacitors as a transitional or shutdown-period backup power source...