Synchronous Controller

Analog Devices announces the Power by Linearà¢â€ž- LTC7821, a hybrid step-down synchronous controller that merges a switched capacitor circuit with a synchronous step-down controller, enabling up to a 50 percent reduction in DC/DC converter solution size compared to traditional step-down solutions. This improvement is enabled by a three times higher switching frequency without compromising efficiency. Alternatively, when operating at the same frequency, an LTC7821 based solution can provide up to a 3 percent higher efficiency. Other benefits include low EMI and reduced MOSFET stress due to a soft-switched front end, ideal for next generation non-isolated intermediate bus applications in power distribution, datacom and telecom as well as emerging 48V automotive systems. The LTC7821 operates over a 10V to 72V (80V abs max) input voltage range and can produce an output voltage from 0.9V to 33.5V with currents in multiple 10s of amps, depending on the choice of external components. In a typical 48V to 12V/20A application, an efficiency of 97 percent is attainable with the LTC7821 switching at 500 kHz. External MOSFETs switch at a fixed frequency programmable from 200 kHz to 1.5 MHz. The LTC7821’s powerful 1àŽ© N-channel MOSFET gate drivers maximize efficiency and can drive multiple MOSFETs in parallel for higher power applications. Due to its current mode control architecture, multiple LTC7821s can be operated in a parallel, multiphase configuration with excellent current sharing to enable much higher power applications.

Analog Devices

Storm Impact Analytics Solution

To support utilities, DTN, a provider of weather insights, launched its new Storm Impact Analytics solution. Storm Impact Analytics provides quantitative and customized damage and outage incident predictions to help utilities better prepare for weather-driven outages, restore power faster and increase service reliability. By knowing the what, when and where of each weather-related incident, utilities can achieve greater decision-making confidence and deliver a higher level of customer service. In addition, a vault of operational intelligence can be used by all levels of the organization. The system uses a sophisticated machine learning-based approach to provide a set of quantitative predictions. Fully integrated with DTN’s WeatherSentry® solution, Storm Impact Analytics also includes real-time, 24/7 meteorological guidance, making it a fully operational and comprehensive storm emergency preparedness solution. The machine learning technology “trains” the solution on how each individual utility’s infrastructure responds to storms, using historical weather and the utility’s own historical outage incidents. It understands how infrastructure has responded to past storms including:

“- Learning differences in network hardening

“- Realizing the age of individual infrastructure components and maintenance practices

“- Factoring in vegetation types and locations, as well as the impact of tree trimming

This allows it to predict the impact of forecasted storms on a utility’s network, including likely damage and outages.


Bluetooth Compliant ICs

Toshiba America Electronic Components Inc. announced that it has added two new devices to its lineup of integrated circuits (ICs) that are compliant with the Bluetooth® low energy standard. The new TC35680FSG (featuring built-in flash memory) and TC35681FSG are well-suited to applications requiring long-range communication, including beacon tags, Internet of Things (IoT) devices and industrial equipment. The new communication ICs support the full spectrum of data rates required for the high-speed features—2M PHY and Coded PHY (500 kbps and 125 kbps)—found in the Bluetooth 5.0 standard. In addition, the new devices deliver a receiver sensitivity level of -105dBm (at 125 kbps) and a built-in high efficiency power amplifier in the transmission block that provides up to +8 dBm transmission power. By adding 5.0-compliant ICs to its extensive lineup, Toshiba helps companies integrate Bluetooth low energy products into IoT devices and addresses the growing demand for high-throughput, long-range communications. Based on an Arm® Cortex®-M0 processor, the new ICs incorporate a 256 KB Mask ROM to support the Bluetooth baseband process, and 144 KB of RAM for processing Bluetooth baseband, stack and data. Toshiba’s TC35680FSG and TC35681FSG also feature 18-port GPIOs as interfaces, which can be set to two channels each for SPIs, I2C and UART. This allows for the structuring of systems that connect to various peripheral devices. These GPIOs can be set for a wakeup function, 4-channel PWM, 5-channel AD converter interfaces, an external amplifier control interface for long-range communication, and more.

Toshiba America Electronic Components Inc.

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