Power

Taylor Vogt, of Texas Instruments, examines the differences between wired and wireless battery management systems in electric vehicle design. One area of interest for electric vehicle (EV) manufacturers looking to improve performance in safe and cost-effective ways is improving battery management systems (BMS). These work in real time to monitor the performance of individual battery cells within the EV. By ...

Diodes has released a non-isolated 10W power supply IC that delivers up to 10W or 600mA from universal mains. It has an internal 700V mosfet and works with mains from 85Vac to 300Vac, and typically with peak current up to 1.1A. “A key differentiator of this switcher IC is that it supports conventional off-line non-isolated fly-back configurations, as well as ...

Toshiba has announced a three-phase brushless dc motor driver with sensor-less sinewave control. The IC, called TC78B011FTG, is a ‘pre-driver’ in the company’s nomenclature because it needs six external mosfets wired as a three-phase bridge to switch motor current. Operation is from 5.5 to 27V, and the same IC can implement either closed-loop or open-loop speed control, commanded through a ...

Aimed at nominal 72V and 110Vdc inputs, the 500W RMD500-EW power supply series from Recom is intended for baseplate-cooled railway use, and similar 300W and 150W rolling stock and trackside PSUs are in the pipeline. Inputs can span 43 to 154Vdc (4:1), and peak at 170V. Output is 24V at up to 500W even with the baseplate at 95°C. Efficiency is up ...

Alpha and Omega Semiconductor has created a 5A electronic fuse IC for sub-power rails in servers. On-resistance is typically 20mΩ. Dubbed AOZ18101DI, they come in 3 x 3mm DFN system-in-packages containing a control IC and back-to-back trench mosfets. The internal mosfets are n-channel, biased using a built-in charge pump. “The eFuse continuously monitors the current flowing through the power switch,” said ...

Power Integrations has switched from a 900V silicon mosfet to a 1,700V silicon carbide transistor to make its automotive-qualified InnoSwitch3-AQ dc-dc converter compatible with 600, 800 and 1200V electric vehicle batteries. What sort of transistor is it? “We don’t go into details of the device,” Power Integrations’ director of automotive business Peter Vaughan told Electronics Weekly. “It looks like a mosfet, ...

Vishay has introduced two n-channel TrenchFET mosfets for telecom and industrial applications. 60V SiJH600E and 80V SiJH800E operate up to +175°C and come in the company’s ~8 x 8mm PowerPak 8x8L package, which has no-bondwire construction for board-level reliability and gullwing leads for mechanical stress relief. On-resistances are typically 0.65mΩ and 1.22mΩ respectively at 10 V. Vishay claims these to be 54% and ...

Analog Devices has created a dual 4V to 16V in 3A output switching regulator for use with 2-serial and 3-serial batteries, and USB-C rails . Called MAX77540, it comes in a 2.5 x 2.3mm 30bump wafer-level package and peaks at 94% efficiency when converting 7.4V to 3.3V. Outputs can be set between 500mV to 5.2V, and the two halves can be paralleled to ...

Yokowo has developed a waterproof blade and receptacle connector with floating contacts to absorb mating misalignment, vibration or shock. Spring-loaded dual-beam contacts absorb contact displacement – 0.3mm laterally (left-right in the photo insert), for example. The base of the connector is ~22mm long (including small tags). Contacts are rated at 3A with 50mΩ contact resistance and a life of 2,000 mating cycles. Waterproofness ...

Flex Power Modules has introduced a non-isolated regulated quarter-brick dc-dc converter rated at 860W continuous and 1,200W peak for <1s. Called BMR350, it is aimed at intermediate bus conversion for processors and asics. Input range is 40 – 60V (80V for 100ms) and the output is 12V at 100A maximum, adjustable from 8 to 13.2V. “An innovative transformer-coupled, non-isolated topology ...