Low resistance values are important for high-efficiency current sensing because lower values mean less wasted power on the current sensing measurement itself. But sensing low resistance values accurately becomes challenging because of lead resistance errors. Using a four-terminal shunt resistor eliminates the detrimental effects of lead resistance on the current sensing measurement operation. The HCSK1216 provides […]
Power Electronic Tips
Compact cartridge fuses carry high-current, high-voltage ratings
Littelfuse, Inc. announced the compact cartridge fuse series available that’s rated at 500Vac/Vdc with current ratings from 40A to 63A and a 10,000A interrupting rating. The 607 Series high-current, high-voltage cartridge fuse, designed for overcurrent protection applications, provides a robust solution for demanding high-voltage power supply circuits. The 500V fuse rating is suitable for both […]
Step-down buck converter reduces space in multi-cell battery apps
Analog Devices, Inc. introduced the MAX77540 step-down buck converter, which provides single-stage power conversion in multi-cell battery applications, such as augmented reality/virtual reality (ARVR) headsets, land mobile radios (LMRs), and digital single-lens reflex (DSLR) cameras. The power-dense MAX77540 buck converter features 94 percent peak efficiency and wafer-level packaging that measures 61 percent smaller than traditional […]
Smart fuses optimized for sub-power rails in server apps
Alpha and Omega Semiconductor Limited announced the release of our initial eFuse product for sub-power rails in server applications. The AOZ18101DI series are 5A eFuse in a compact 3mm x 3mm DFN package. The new products use AOS’s advanced co-packaging technology, combining a high-performance IC with protection features and our latest high SOA Trench MOSFET. The new devices offer low RDS(ON) (20mohm) back-to-back MOSFETs […]
Eval board covers battery management in IoT apps
ROHM Semiconductor announced the availability of a new evaluation board, the REFLVBMS001-EVK-001, which facilitates the verification of the operation of ultra-efficient battery management solutions for the expanding IoT field. Recent years have seen the proliferation of battery-driven electronic devices, including wearables, industrial IoT (e.g., smart cards and electronic shelf labels), and portables. These devices not only need […]
Railway-compliant 500-W dc/dc converter features high effeciency
The latest addition to RECOM’s railway portfolio is the RMD500-EW series. Featuring a 500-W rating with a wide 4:1 (43-154 Vdc) input range (170 V peak) and 24-V output, the product is suitable for nominal 72 V and 110 Vdc inputs with tolerance and surges according to EN 50155. The RMD500-EW is designed for ‘plug […]
Automotive-grade silicon PIN photodiode delivers peak sensitivity of 950 nm
The Optoelectronics group of Vishay Intertechnology, Inc. introduced a new Automotive Grade 4-quadrant silicon PIN photodiode in a standard surface-mount package. Enabling a variety of sensor and control applications for the automotive, consumer, and industrial markets, the Vishay Semiconductors K857PH combines high photosensitivity with low 0.1 percent crosstalk and virtually no tolerance between its segments. […]
Space-grade dc-dc power converter family includes 2 V-input, 50 W rad-tolerant options
Space system designers cannot easily support non-standard voltages or add functions with traditional hybrid-style power converters. Microchip Technology Inc. has eliminated the cost, complexity, and customization challenges of these hybrid solutions by offering a discrete-component-based, space-grade dc-dc power converter family that now includes 28V-input, 50-watt (W) radiation-tolerant options. Microchip’s SA50-28 family is the industry’s only […]
Battery management system uses ultra-thin pressure and temperature sensors
Innovation Labs has announced the BaMoS battery monitoring system that uses ultra-thin printed pressure and temperature sensors to capture detailed battery data down to the individual cell level, which can be used to extend battery lifetime by up to 40 percent. The battery is the most important component in an electric vehicle (EV). Despite extensive […]
Dual gate drivers simplify SiC and IGBT switching circuits
Two new dual-channel galvanically-isolated gate drivers for IGBTs and silicon-carbide (SiC) MOSFETs from STMicroelectronics save space and ease circuit design in high-voltage power-conversion and industrial applications. The STGAP2HD for IGBTs and STGAP2SICD for SiC MOSFETs leverage ST’s latest galvanic-isolation technology to provide 6kV transient-voltage capability in a SO-36W wide-body package. In addition, ±100V/ns dv/dt transient immunity prevents spurious turn-on […]