Search results for "optocouplers"

Vishay’s new 4 pin low-current mini optocouplers with phototransistor output protecting equipment users from electrical shocks and protecting the microprocessors within these systems from being damaged by voltage spikes can now be sourced through TTI.

The industry’s lowest-power digital isolators, the ADuM144x family, have today been announced by Analog Devices. Delivering power levels over 1,000 times lower than optocouplers and competing digital isolators, the ADuM144x family are based on ADI’s proprietary iCoupler digital isolation technology and can be powered by as little as 1 μW.

A new series of low input current optocouplers with phototransistor output from Vishay can now be ordered from TTI, Inc., the world’s leading specialist distributor of passive, connector, electromechanical and discrete components. The VOS627A and VOS628A series optocouplers broaden Vishay’s optoelectronics portfolio and feature the compact SSOP-4 mini-flat package and the flexibility to choose from variable transfer ratio (CTR) ranges...

The PFW 150-24 industrial grade AC-DC power supply delivers reliable power conversion in critical applications where unit replacement is problematic or expensive. The feedback system on the primary side employs a sensing circuit design in place of optical components, resulting in an MTBF of 170,000 hours at 45degC, minimum. Robust mechanical construction and additional conformal coating ensure immunity to high levels of shock, vibration and moist...

Analog Devices has shipped the one-billionth channel of isolation based on its proprietary iCoupler digital isolator technology. This achievement comes after more than a decade of global industry leadership in the area of galvanic safety isolation, which serves customers in a wide array of applications including industrial control systems and motor drives, solar energy systems, hybrid electric vehicles, medical equipment and plasma TVs.

Designers can now reduce power, size and system cost for programmable logic controller digital-input subsystems, with the Corona (MAXREFDES12#) reference design from Maxim. One method of reducing the size of I/O solutions in PLCs is to reduce the number of digital channels that need to be isolated. Integrating three Maxim products including theMAX13256 transformer driver, the Corona design reduces isolated channels and eliminates the need for pow...

Vishay Intertechnology is broadening its optoelectronics portfolio with the release of two new series of 4-pin, low AC input current optocouplers with phototransistor output. The VOS628A and VOS627A are offered in the compact SSOP-4 mini-flat package with a double-molded construction, which saves more than 60 % on board space compared to a DIP-4 package and improves high-voltage performance compared to co-planar constructions from other suppliers...

Avago’s new AEC Q100 grade optocouplers, the ACPL-K4xT/K7xT series has significantly lower LED driving current compared to conventional optocouplers, thus lowering system power consumption. Additionally, the unique stretched surface-mount package reduces the optocoupler’s footprint and volume while improving the insulation clearance and creepage, thus increasing the insolation voltage rating. The ACPL-K4xT//K7xT family of digital optocouplers...

Avago Technologies R2Coupler optocouplers employ Avago’s high reliability LEDs to provide isolated signal transmission. Avago automotive-grade LEDs do not degrade across the typical mission profile of automotive vehicles. LED technology is a mature technology. Avago R2Coupler optocouplers use advanced and sophisticated methods for manufacturing LEDs that have been improved and refined over 35 years. By Roy Tan of Avago Technologies.

There are many challenges associated with high-voltage Li-ion battery-stack management in all-electric or hybrid automotive applications. Charge and discharge cycles must be monitored and controlled, and the battery stack, which often delivers voltages of several hundred volts, has to be isolated for safety concerns. In particular, this paper will examine the requirements for Li-ion cell monitoring, and review the architecture and components used...