PRODUCT NEWS New version Support for Microsoft Azure RTOS
enesas Electronics Corporation’s customers designing with all mainstream Renesas 32-bit MCU families now have access to Microsoft Azure Real-Time Operating System (RTOS) embedded development suite, including its powerful Azure IoT middleware. Azure RTOS is integrated and available out-of-box in the recently released Flexible Software Package (FSP) version 3.0 for the Renesas’ RA Family MCUs, and the Synergy Software Package (SSP) version 2.0 for Synergy MCUs. Azure RTOS support for Renesas’ RX Family is provided through the e2 studio integrated development environment.
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ercepio has released Tracealyzer version 4.5 with support for the Espressif ESP32 MCU, the open-source Zephyr RTOS, improved integration with Lauterbach uTrace, and a range of other
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enhancements. Zephyr is a safe, secure, and scalable open-source RTOS that supports multiple hardware architectures. Maintained by the Linux Foundation, Zephyr is one of the fastest growing RTOSes today. Percepio's trace recorder library has now been adapted and integrated with Zephyr v2.6.
Microsoft Azure RTOS includes Azure RTOS ThreadX, an advanced real-time operating system designed specifically for deeply em- bedded applications. Among the multiple benefits it provides are real-time multithreading, inter-thread communication and syn- chronisation, and memory management. Azure RTOS ThreadX offers advanced features, including picokernel architecture, preemption- threshold, event chaining, and a rich set of system services.
PI’s new switching power supply IC’s offer combined power features
New Single- Channel
Interface ICs
FTDI Chip has unveiled the FT23xHP series. These ICs are supplied in QFN packages. They support operation across just one channel, thereby enabling systems that are subject to space or budgetary constraints to still benefit from elevated levels of power delivery via their USB ports. At the same time data can still be transferred at 480Mbits/s rates, without any interruption being experienced should the direction of power flow change (with the system shifting from a source into a sink, or vice-versa).
ower Integrations’ new switching power supply IC combines offline power conversion, lossless zero-cross detection and, optionally, X-capacitor discharge functions in a compact SO-8C package. This IC can be used for non-isolated buck and buck-boost power supplies up to 575mA output current and provides up to 12W output for universal-input isolated flyback designs. Adnaan Lokhandwala, product marketing manager at Power Integrations said: “The new LinkSwitch-TNZ ICs provide an accurate signal indicating that the sinusoidal AC line is at zero volts. This signal is used by smart home and building automation (HBA) products and appliances to control the switching of relays, IGBTs and TRIACs to minimise switching stress and system in-rush current. The detection of the zero-cross point consumes less than 5mW, allowing systems to reduce standby power losses versus alternative approaches that require ten or more discrete components and burn 50 to 100mW of continuous power.”
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Devices such as light switches, dimmers, sensors, and plugs connect and disconnect the AC line periodically using a relay or TRIAC. A discrete circuit is typically implemented to detect the AC line zero-crossing to control the turn-on transition of the main power device while reducing switching losses and in-rush current. This approach requires many components and is very lossy, consuming almost half of the standby power budget in some cases. Similarly, appliances often use a discrete zero-cross detection circuit to control motor and MCU timing. These applications also require an auxiliary power supply for functions such as wireless connectivity, gate drivers, sensors and displays. LinkSwitch-TNZ ICs provide light-load efficiencies, enabling more system features to be powered while meeting stringent standby regulations such as: the European Commission (EC) standard for home appliances (1275), which requires equipment to consume no more than 0.5W in standby or in off mode; ENERGY STAR’s version 1.1 for Smart Home Energy Management Systems (SHEMS), which limits standby consumption of smart lighting control devices to 0.5W; and China’s GB24849, which limits the off-mode power consumption in microwave ovens to 0.5 W. LinkSwitch- TNZ ICs also reduce component count by 40% or more when compared to discrete designs.
1-Cell protection IC for Li-Ion / Li-Polymer batteries
Ricoh Electronic Devices Co., Ltd. in Japan has launched the R5613, a primary battery protection IC for rechargeable 1-cell Lithium-Ion and Lithium Polymer batteries. It is designed to enforce strict usage limits keeping the battery cell in optimal condition and preventing critical overload conditions. Target applications are Li-Ion batteries or
26 JUNE 2021 | ELECTRONICS TODAY
battery packs for portable devices such as smartphones, smartwatches, fitness trackers or other electronic gadgets. Ricoh is a pioneer and has over 25 years of experience in developing battery protection ICs, the new R5613 features standard functions like over-charge and over-discharge voltage, excess load and
excess charge current and a short circuit protection. Several advanced functions were added which distinguishes the product from the competition. A new reset pin was introduced to enable controlling the IC externally, the pin has two optional functions which are selected by product version.
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