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Highly Integrated USB-C Buck Charger Reduces Size by 30%
Maxim Integrated Products has announced the MAX77860 3 A switch-mode charger. This USB-C buck charger is the industry's first integrated USB-C port controller and charger to eliminate the need for a separate host controller, according to Maxim. This simplifies software development and reduces overall bill-of-materials (BOM) costs for applications such as financial point-of-sale terminals, power banks, industrial computers, scanners, radios, medical devices and charging cradles.
To reduce design size as well as simplify system design, the MAX77860 integrates USB-C configuration channel (CC) port detection and a battery charger for 15 W applications. These integrated functions allow battery charging at the fastest rate possible under the USB-C specification and contribute to 30% smaller design size while also simplifying software development. The CC pin detection feature also shortens the design effort by eliminating the need to support end-to-end USB port connection and allowing charging to start automatically.
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Fully Encapsulated PMBus Power Modules Deliver 10 A and 15 A
Renesas Electronics has announced a pair of encapsulated hybrid digital DC/DC PMBus power modules, the 10-A ISL8280M and 15-A ISL8282M. The hybrid digital power modules offer best-in-class power density of 115 mA/mm-squared in a 12 mm x 11 mm package, with up to 95 percent peak efficiency. They are complete single-channel, synchronous step-down regulated power supplies that operate over a wide input voltage range of 5 V to 16 V. Also announced are the ISL8210M and ISL8212M analog power modules, offered in the same pin-to-pin compatible 12 mm x 11 mm package with 10 A and 15 A of output current, respectively. The hybrid digital and analog power modules provide point-of-load (POL) conversion for advanced FPGAs, DSPs, ASICs and memory used in servers, storage, optical networking, telecom and a broad range of space-constrained industrial applications. Each device integrates a PWM controller, MOSFETs and inductor inside a new thermally optimized, Grid High Density Array (GHDA) encapsulated module. To complete the power supply, designers simply add input and output ceramic capacitors.
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Low Power SMD Converters Target Critical Medical Designs
RECOM has introduced SMD versions for its recently released 3.5 W, 5 W and 6 W medical-grade DC/DC modules. All key features required for critical medical applications are now available for SMD designs. The REM3.5E, REM5E and REM6E series of medical-grade regulated DC/DC converters now come with either pins or SMD. They feature reinforced 250 VAC continuous working isolation with over 8 mm creepage/clearance providing 2xMOPP and qualify for medical B, BF and CF applications due to their very low 1 μA leakage current. The reinforced insulation of up to 10 kVDC is sufficient for virtually every medical application.
These compact SMD devices have tightly regulated single or dual outputs with UVLO, SCP, OCP and OVP. The modules operate at above 80% efficiency in a wide temperature range from -40°C up to +85°C without derating. They are UL marked and certified to CB, IEC, EN and ANSI/AAMI 60601 3rd ed. Safety and 4th ed. EMC medical standards.
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Win a Free CD with a Year's Worth of Circuit Cellar Content! This week's newsletter raffle is for a 2018 archive CD of Circuit Cellar magazine. Enter the drawing using the link below. The CD contains PDFs for 12 issues and the associated article code files. A $40 value! Drawing ends at midnight this coming Friday. ENTER THE DRAWING HERE
And congratulations to last week's raffle winner, Norbert P., who won a1 year subscription to Circuit Cellar. Thanks to all who participated! |
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Whether its a project-based article, an article about a technology trend, or an analysis of a technical issue or challenge, Circuit Cellar is looking for insightful, detailed articles that help its readers do their jobs as embedded system designers. If you have an article or an article proposal, let us know! Our article submissions page provides you with our requirements and guidelines.
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Smart Linear Regulator Boasts High Efficiency and Power Density
Texas Instruments (TI) has expanded its portfolio of linear regulators by introducing a smart AC/DC linear regulator. With 75 percent higher efficiency and two times the power density of other linear regulators, this device achieves the best balance between high efficiency and ultra-low noise while shrinking power-supply size, says TI. The fully integrated TPS7A78 linear regulator uses a unique switched-capacitor architecture to eliminate discrete components, including external inductors and transformers and miniature circuit breakers and interrupters, for tamper-resistant designs in applications including electronic metering in grid infrastructure and building automation.
The TPS7A78 is a non-isolated linear regulator that delivers up to 0.5 W from AC to DC with smaller, fewer components. This smart design optimizes regulation through an active bridge, switch capacitor and integrated low-dropout regulator (LDO). This design results in higher efficiency and a reduced capacitor size compared to linear regulators in traditional capacitor-drop solutions utilizing a Zener diode. CONTINUE READING
FREE WHITE PAPER: Implementing an IoT Edge Device While Minimizing NRE
One designer in a garage, a small startup and even small groups within large companies are designing IoT edge devices. These designers need to keep non-recurring expense (NRE) down by using affordable design tools that are easy to use to quickly produce results and by minimizing IP and fabrication costs. This white paper discusses an approach to minimize NRE for IoT edge device implementation.
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Low-Cost, Open Frame Power Supplies Provide 40 W and 60 W
XP Power has launched two new series of low-profile, open-frame power supplies addressing the need for low-cost 40 W and 60 W solutions that support a broad range of applications within the medical, domestic/household and ITE/industrial sectors. Most markets are under price pressure these days. The new FCS40 and FCS60 address this need by combining low unit cost with easy integration into multiple end equipment markets with international agency approvals, high efficiency and low emissions. This is further supported by the wide operating temperature (-25°C to +70°C) that allows use in a wide variety of environments.
The new FCS40 and FCS60 supplies offer a single output of either 12 V, 15 V, 18 V, 24 V, 36 V or 48 V at efficiencies up to 86%, model-dependant. An on-board potentiometer allows the voltage to be trimmed by ±10%, optimizing the voltage for specific load requirements or voltage drops. Both the FCS40 and FCS60 carry extensive approvals that ease the task of the designer in obtaining system-level approval for their designs. For medical applications these include IEC/EN/ES60601 offering 2 x Means of Patient Protection (MOPP). The units also include two-line input fuses and offer Class II operation, furthering their suitability for medical applications in the home healthcare environment.
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Industry News & Recent Posts
Microchip Technology has announced an IoT rapid development board for Google Cloud IoT Core that combines a low-power PIC MCU, CryptoAuthentication secure element IC and fully certified Wi-Fi network controller. The solution provides a simple way to connect and secure PIC MCU-based applications.... Continue reading →...»
STMicroelectronics (ST) has announced its latest Bluetooth offering, its STM32WBx5 dual-core wireless MCUs. The devices come with Bluetooth 5, OpenThread and ZigBee 3.0 connectivity combined with ultra-low-power performance. Fusing features of ST's STM32L4 Arm Cortex-M4 MCUs and in-house radio managed by a dedicated Cortex-M0+, the STM32WBx5 is power-conscious yet capable of concurrent wireless-protocol and real-time application execution. ... Continue reading →...»
Nordic Semiconductor has announced that ConnectedYard has selected Nordic's nRF51822 Bluetooth Low Energy (BLE) SoC to provide the wireless connectivity for pHin, a smart water care solution designed to simplify the care and maintenance of backyard swimming pools and hot tubs. ... Continue reading →...»
Cypress Semiconductor has announced it is sampling two low-power, dual-mode Bluetooth 5.0 and Bluetooth Low Energy (BLE) MCUs that include support for Bluetooth mesh networking for the Internet of Things (IoT). The new CYW20819 and CYW20820 MCUs each provide simultaneous Bluetooth 5.0 audio and BLE connections. ... Continue reading →...»
IoT implementations can take many shapes and forms. Learn how these four Camosun College students developed a system to monitor all the refrigeration units in a commercial kitchen simultaneously. The system uses Microchip PIC MCU-based monitoring units and wireless communication leveraging the LoRa wireless protocol. ... Continue reading →...» |
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