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PMICs monitor deep learning SoCs

Wed, Jul 25, 2018

Two power management ICs (PMICs) from Maxim Integrated provide power management for deep-learning SoCs, FPGAs and multimedia application processors. The MAX77714 and MAX77752 can help mobile systems designers to maximise performance per watt while increasing system efficiency, says the company.

The MAX77714 and MAX77752 address a spectrum of applications ranging from augmented reality/virtual reality (AR/VR), gaming, solid-state drives (SSDs), security and industrial internet of things (IIoT) to handheld devices such as cameras and home automation hubs. They have been developed with architecture that consumes 40 per cent less power than standard solutions, claims Maxim, to extend battery life and to provide a compact form factor.

The move towards higher performance application processors is increasing computational power in consumer electronics and mobile devices, which is at odds with user expectations that battery-operated, always-on electronics run cool and for long periods of time. Designers are faced with the challenge of reducing board space and component cost, while delivering high efficiency, high horsepower and flexible power sequencing.

The MAX77714 PMIC enables multi-core processor-based systems to operate at maximum performance with greater than 90 per cent efficiency at 3.6V in, 1.1V out. The 70-bump, 4.1 x 3.25 x 0.7mm WLP enables thinner, smaller devices and extends battery life up to 40 per cent compared to standaone solutions, claims Maxim. In addition, it reduces design cycle time, component count, and bill of material (BoM) costs compared to discrete solutions by integrating 13 regulators, including nine low-dropout linear regulators, real-time clock (RTC), back-up battery charger, watchdog timer, flexible power sequencing and eight general purpose input/outputs (GPIOs), adds the company.

The MAX77752 is a multi-channel PMIC designed for applications with multiple power rails and hot-plugging capabilities. It improves efficiency up to 90 per cent at 3.6Vin, 1.8V out for longer battery life and includes a flexible power sequencer (FPS) to allow hardware- or software-controlled power up. It reduces design cycle time, component count and BoM costs by integrating three buck regulators (with high-accuracy brown-out comparators), one low-dropout linear regulator, two dedicated load switch controllers, one in-rush current limiter, two external regulators to enable outputs, voltage monitor for back-up power control and a dedicated digital output resource for logic control. The MAX77752 comes in a compact 40-pin, 5.0 x 5.0 x 0.8mm, 0.4mm-pitch TQFN package.

http://www.maximintegrated.com

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Mouser adds Semtech’s LoRa transceivers for LPWAN and IoT applications

Wed, May 16, 2018

Continuing its new product introduction (NPI) mission, Mouser Electronics has added the SX1261 and SX1262 LoRa transceivers from Semtech.

Designed for extended battery life, the SX126x transceivers have just 4.2mA of active receive current consumption. The sub-GHz radio transceivers are suitable for long-range RF wireless applications and are fully compliant with the physical layer requirements of the LoRaWAN specification released by the LoRa Alliance.

The Semtech SX1261x transceivers support LoRa modulation for low power wide-area network (LPWAN) applications, as well as (G)FSK/MSK modulation for legacy applications. They include a new spreading factor of SF5 for dense networks, adds Mouser. The SX1261 can transmit up to +15dBm, and the SX1262 can transmit up to +22dBm with efficient, integrated power amplifiers.

The SX126x devices expand network coverage while reducing the receive-mode power consumption to just 4.5mA, this is 50 per cent less than the previous generation, notes Mouser. This extends the battery life of the LoRa-based sensors by up to 30 per cent. It also opens up many new uses for improved connectivity with IoT sensor applications.

The SX126x offer global continuous frequency coverage from 150 to 960MHz, covering all major sub-GHz ISM bands. Both radio devices are suitable for systems targeting compliance with radio regulations including, but not limited to, ETSI EN 300 220, FCC CFR 47 Part 15, China regulatory requirements, and the Japanese ARIB T-108. The SX1262 transceiver is supported by the SX1262DVK1CAS Development Kit, also available from Mouser.

Semtech’s SX1261 and SX1262 LoRa transceivers are now available in a compact 4.0 x 4.0mm package that is 45 per cent smaller than the current generation. Target applications are IoT and wireless projects, including smart meters, agricultural sensors, asset tracking, building automation, streetlights, safety and security sensors, healthcare, and robotics.

Mouser claims to stock the world’s widest selection of the latest semiconductors and electronic components for the newest design projects. Mouser Electronics’ website is continually updated and offers advanced search methods to help customers quickly locate inventory. It also houses data sheets, supplier-specific reference designs, application notes, technical design information, and engineering tools.

Semtech supplies analogue and mixed-signal semiconductors and advanced algorithms. The company is dedicated to providing proprietary solutions and breakthrough technology for circuit protection (TVS), high reliability, power management, professional AV, signal integrity, smart sensing, video, wireless charging, and wireless RF for use in automotive, broadcast equipment, data centres, industrial, IoT, LCD TVs, smartphones, tablets, wearables, and the wireless infrastructure.

http://www.mouser.com

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Premier Farnell signs global franchise with SiTime

Fri, May 11, 2018

Farnell element14 customers now have access to the latest silicon MEMS based timing from SiTime, following a franchise agreement between the two parties.

It will give access to SiTime’s MEMS-based silicon timing solutions, which offer short lead-times, high performance, low power, small size and high reliability.

Over one billion SiTime silicon timing devices are being used today in applications from smartphones, tablets and cameras to air transportation and earthquake detection systems. Devices such as mobile phones, fitness trackers and tablets rely on the small size and low power consumption of SiTime products. Mission-critical electronics such as space rockets, self-driving vehicles and earthquake detection systems rely on the reliability and precision of the company’s solutions.

Jeff Uden, global category director, IP&E for Premier Farnell and Farnell element14 said: “As the Development Distributor we aim to provide our customers with the very best devices for them to develop their products. SiTime is driving real innovation in this market, providing chip-scale packages for timing solutions. SiTime products are a great match for Farnell element14 customers looking for increased flexibility and reliable timing solutions in a tiny package.”

Mark Lunsford, executive vice president, worldwide sales, from SiTime added: “SiTime is redefining timing technology and is uniquely focused on solving the most difficult timing problems for the electronics industry. We take pride in the reliability, robustness, and accuracy of our timing devices, especially in harsh conditions. . . customers are using our timing products in 5G infrastructure, self-driving cars, the internet of things, and artificial intelligence systems. Our MEMS timing devices are up to 20 times more reliable, 30 times more resistant to shock and vibration and offer 50 times better quality. We are delighted to add Premier Farnell to our distributor network, as we continue to drive the electronics market to silicon-based timing.”

Farnell element14 will be stocking over 200 oscillators from SiTime. They include SiT15XX µPower oscillators, housed in what is claimed to be the industry’s smallest chip-scale package (CSP). The high stability of these low-frequency devices enable longer sleep modes, ideal for mobile, wearable, and IoT products.

There is also the Elite platform SiT938X oscillators delivering dynamic performance in of the presence common environmental hazards such as shock, vibration, power supply noise, and EMI. SiT938X oscillators are engineered for ASIL (Automotive Safety Integrity Level) -compliant automotive applications such as advanced driver assistance systems (ADAS) and in-vehicle 10/40/100G Ethernet.

SiTime products are available from Farnell element14 in Europe, Newark element14 in North America and element14 in APAC.

http://www.farnell.com

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Low power microcontroller duo extends battery-powered sensors and wearables

Wed, Apr 04, 2018

Two microcontrollers from Maxim Integrated, the MAX32660 and MAX32652 are based on the low-power Arm Cortex-M4F. They are suitable for wearable sensors and battery-powered applications such as IoT sensors, environmental sensors, smartwatches, medical/preventive health wearables, and other size-constrained devices.

The MAX32660 and MAX32652 microcontrollers provide designers with the means to develop advanced applications under restrictive power constraints, says the company. Maxim’s family of Darwin microcontrollers combine its wearable-grade power technology with the biggest embedded memories in their class and what the company claims is some of the most advanced embedded security in the world.

The MAX32660 is characterised by powerful processing in a tiny form factor. Memory, size, power consumption, and processing power are critical features for engineers designing complex algorithms for smarter IoT applications. Existing solutions either have sufficient power consumption but limited processing and memory capabilities, or if they have higher power consumption there are more powerful processors and more memory. The MAX32660 offers designers access to enough memory to run some advanced algorithms and manage sensors (256kbyte flash and 96kbyte SRAM). They also offer power performance down to 50-microW/MHz), and a small form factor of 1.6 x 1.6mm in a WLP. They are also available at a cost-effective price point, adds Maxim, enabling engineers to build more intelligent sensors and systems that are smaller and lower in cost, while also providing a longer battery life.

The MAX32652 is a low power microcontroller with scalable memory. As IoT devices become more intelligent, they require more memory and additional embedded processors which can each be expensive and power-hungry, explains Maxim. The MAX32652 offers an alternative for designers with the low power consumption of an embedded microcontroller with the capabilities of a higher powered applications processor. With 3Mbyte flash and 1Mbyte SRAM integrated on-chip and running up to 120MHz, the MAX32652 can be used in IoT devices that strive to do more processing and provide more intelligence. Integrated high-speed peripherals such as high-speed USB 2.0, secure digital (SD) card controller, a thin-film transistor (TFT) display controller, and a security engine position are integrated. With the added capability to run from external memories over HyperBus or XcellaBus, the MAX32652 can be designed to do even more tomorrow, providing designers a future-proof memory architecture and anticipating the increasing demands of smart devices, Maxim believes.

MAX32660EVKIT# and MAX32652EVKIT# evaluation kits are also both available via Maxim’s website.

http://www.maximintegrated.com.

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PMICs monitor deep learning SoCs

Mouser adds Semtech’s LoRa transceivers for LPWAN and IoT applications

Premier Farnell signs global franchise with SiTime

Low power microcontroller duo extends battery-powered sensors and wearables

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