Alpha and Omega Semiconductor introduced the EZBuck regulator family with I2C control. The first two, the 4-A AOZ2231CQI-01 and the 8-A AOZ2233CQI-02, provide a compact, efficient power converter solution for next-generation chipsets and FPGAs. Microprocessors and SoCs often use dynamic voltage scaling to reduce power dissipation and improve system performance, which often requires several external components. The 4-A AOZ2231CQI-01 and the 8-A AOZ2233CQI-02 make the design of such converters simple by allowing the system designer to control the output voltage from 0.6 V to 1.79 V using an I2C interface with 9.375-mV steps.
Both the 4-A and the 8-A devices are available in a footprint-compatible QFN 4 x 4-mm package, allowing designers an easy upgrade path as power requirements increase. The devices accept an input voltage range from 6.5 V to 28 V with a built-in 5.3-V regulator, making single-supply operation possible. The proprietary COT architecture provides ultra-fast load transient response performance and allows stable and low-voltage ripple operation with small ceramic capacitors. Competing solutions often need to generate a larger output ripple voltage to stabilize the circuit. Additionally, the input feed-forward feature provides a constant switching frequency over the entire input voltage range, further alleviating noise concerns.
Analog Devices’ Power by Linear LTM4653 is a 58-VIN step-down µModule regulator that can safely operate from unregulated or fluctuating 24-V to 48-V input supplies in noisy environments. Integrating input and output filters enable the device to meet the EN55022 Class B EMC standards, and the low EMI architecture makes it suitable for use in signal processing applications.
The output voltage is adjustable with one resistor from 0.5 V to 94% of VIN, providing the ability to use one product to generate common system bus voltages of 3.3 V, 5 V, 12 V, and 24 V. The LTM4653 houses a switching regulator controller, power switches, inductor, and other supporting components in a 15 x 9 x 5.01-mm BGA package. Only the bulk input and output filter capacitors are needed to complete the design. The LTM4653 operating temperature range is –40°C to 125°C.
Zigbee 3.0 is winning the IoT’s low-power mesh market
The industry is slowly beginning to understand the many complexities of wireless IoT standards and how Zigbee 3.0 has addressed them all
By Cees Links, GM of Qorvo Wireless Connectivity Business Unit
As the Internet of Things (IoT) market accelerates and becomes more of a reality, the hype surrounding it becomes more intense and more confusing. It is time for a reality check, to take inventory of which IoT wireless standards are succeeding today and which are designed to survive and thrive in the future. A major force paving the path for the wireless future — the collective experience of more than 400 companies gathered and refined over 15 years — has now resulted in a technology “hardened for use” by consumers and in the industry: Zigbee 3.0.
Having spent most of my career pioneering the wireless data industry — and having led the team that created and popularized Wi-Fi, I’ve seen firsthand the trials and tribulations of wireless standards. Two years ago, for instance, IoT innovators heavily discussed and debated different radio technologies that would be useful for the IoT. Some companies advocated that Wi-Fi and Bluetooth would be sufficient, while other companies advocated for IEEE 802.15.4 (the underlying radio technology for Zigbee and Thread).