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A New Approach to Circuit Breaker Design Using Silicon Carbide Switches - Nov 21
Mechanical circuit breakers can be low cost with minimal losses, but they operate slowly and wear out. Solid state versions overcome the problems and are becoming increasing viable as replacements at...
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Power Electronics Europe News
 
Network processor supports Bluetooth 4.1 and 1.7V operation
The BlueNRG-MS network processor integrates a Bluetooth PHY and 2.4GHz radio, ARM Cortex-M0 microcontroller running the Bluetooth 4.1 protocol stack, and dedicated AES-128 security coprocessor. API, power management, and Flash are already integrated, allowing direct connection to the application host controller using a simple SPI bus leveraging software partitioning between network processor and host microcontroller. The Bluetooth 4.1 specification increases energy efficiency and supports dual-mode topologies containing devices operating as both master and slave. The new Low-Duty-Cycle Directed Advertising minimises energy consumed when connecting to known devices. The specification also introduces Logical Link Control and Adaptation Protocol (L2CAP), which enables flexible data exchanges leveraging multi-channel communications and quality of service. The network processor can power a hub capable of collecting sensor data and acting as a peripheral to transfer the data to a smartphone. It can also allow very large sensor networks with unlimited communication range, controlled by a single smartphone, says the company. It also supports the latest moves towards IP-based connectivity added to Bluetooth 4.1, which enables developers to target opportunities in the IoT (Internet of Things). The processor is available now in a 5 x 5 x 1mm QFN32 package. A CSP option with the 2.6 x 2.6mm footprint and height as low as 0.56mm will be available after April 2015.

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