Search results for "optocouplers"
New Series Of Low Input Current Optocouplers From Vishay
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...
Compact 150W PFC-input power supply with high MTBF
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...
ADI ships billionth channel of iCoupler digital isolation
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.
Reduce power, size and cost of PLC digital-input subsystems
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's New Low AC Input Current Optocouplers in Ultra-Compact Package Save More Than 60 % on Board Space
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...
Digital Optocouplers Deliver Low Power Consumption And High Isolation For Automotive Applications White Paper
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...
High Reliability LED Technology In Optocouplers For HEVs And EVs White Paper
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.
Improve Li-Ion Battery-Stack Safety In EVs By Leveraging Optocouplers To Isolate High Voltages
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...
Calculate The LED Lifetime Performance In Optocouplers To Predict Reliability White Paper
Optocouplers are used extensively for high-voltage isolation and electrical noise rejection – two essential requirements for transmitting correct information between different voltage potentials within an electrical system. Such systems must be able to operate reliably for many years when used in industrial, medical, renewable energy environments, and any other system that has a long expected operating lifetime. By Foo Chwan Jye of Avago Techno...
Building Safe And Reliable Electrical Systems With Optocouplers White Paper
Electrical systems, no matter what their purpose, share three primary requirements: reliable, safe, and long life operation. To ensure safe operation, users must be double insulated from any dangerous high voltages the equipment employs. To ensure reliable and long life operation, control electronics must also be protected from hazards such as electromagnetic interference and voltage spikes. Avago’s optocouplers provide safety and protection un...