© beisea dreamstime.com Components | October 02, 2012
Optocouplers obsolete with drop-in digital isolators
Silicon Laboratories Inc. introduced a drop-in replacement for optocouplers based on mainstream CMOS technology and incorporating an innovative light-emitting diode (LED) emulator input.
The new Si87xx digital isolators offer a pin configuration, package and footprint fit for a number of optocoupler products while offering superior noise immunity, more robust performance and greater reliability, designed to fit solar power inverters, switched mode power supplies (SMPS), uninterruptible power supplies (UPS), industrial drives, programmable logic controllers (PLCs), high-voltage medical equipment and other applications that often use optocouplers. Used for more than 40 years, optocouplers are inherently limited by outdated LED-based technology, which exhibits significant output variation over input current, temperature and age. These variations reduce the operating performance and reliability over the optocoupler’s lifetime, resulting in increased design complexity and shorter life expectancy for end products. Because of their aging effects, optocouplers are often specified to last only 10 years, posing a serious problem for industrial system designers who want to develop products with 20+ year warranties. Silicon Labs’ Si87xx opto-replacement devices use a patented CMOS-based isolation architecture that is completely immune to the output variations that plague LED-based optocouplers. CMOS-based capacitive isolation technology provides more than ten times the mean-time-to-failure (MTTF) rate of optocouplers. By offering longer device lifetimes and higher reliability, the Si87xx isolators enable system manufacturers to support longer end product warranties and reduce costs associated with repair or replacement. Less variability, especially in the input turn-on current, also simplifies system designs since engineers no longer need to anticipate aging effects when using the Si87xx devices. The Si87xx family is based on Silicon Labs’ capacitive isolation technology, with isolation ratings up to 5 kV and fully compliant with IEC 60747-5-2 including 10 kV surge protection. The family meets the requirements for IEC 60950-1, 61010-1 and 60601-1 (reinforced insulation) and provides up to 1200 V working voltage with a 60+ year lifetime. “The new Si87xx family represents the industry’s first major step along the path to drop-in optocoupler replacement by providing a perfect package/footprint fit for a number of widely used optocoupler products,” said Mark Thompson, vice president and general manager of Access, Power and Sensor products at Silicon Labs. “Our new opto-replacement solution is the best choice for systems that currently use outmoded optocouplers but need significant improvements in power efficiency, performance, reliability and product lifetime.” All Si87xx isolators incorporate an innovative LED emulator input that, along with new package options, allows Silicon Labs to offer a fully drop-in compatible upgrade for many existing optocouplers. The base Si8710 device consists of an LED emulator input and an open-collector output. Two additional device configurations are available: the Si8711 adds an integrated pull-up resistor, and the Si8712 includes a dedicated enable pin that can asynchronously control the output. Pricing and Availability Samples and production quantities of the Si87xx digital isolators are available now in SOIC-8 and GW DIP-8 packages with isolation ratings up to 3.75 kV. Si87xx products in SO-6 and LGA-8 packages certified to 5 kV isolation ratings will be available in Q1 2013. Pricing for the new Si87xx digital isolators in 10,000-unit quantities begins at $0.43 (USD).
Microsoft invests in AI Chip company Syntiant, a deep learning tech company providing AI voice and sensor solutions, has completed a USD 35 million Series C funding round.
Meyer Burger sells its microwave and plasma maker Muegge Meyer Burger Technology is selling its microwave and plasma technology company Muegge GmbH, to investment company HQ Equita.
ON Semi looking to sell Japanese facility ON Semiconductor is exploring a sale of its manufacturing facility in Niigata, Japan. The intended sale of the facility is part of the company’s plan to optimise its manufacturing footprint and sharpen its focus on highly differentiated power, analog and sensor products.
New VP of business development at Smith The distributor of electronic components and semiconductors has appointed Renato Souza to the position of Vice President of Business Development. Renato previously served as Vice President, Latin America of Smith since 2017.
Bosch launches 5G tests at Reutlingen wafer fab The German company believes 5G will be a key building block of digitalization and connectivity in manufacturing and logistics. And for that reason, Bosch is now starting compatibility tests and channel measurements for setting up a 5G network in its wafer fab in Reutlingen.
ACM Research receives orders from two new analog/power IC customers The supplier of wafer cleaning technologies for advanced semiconductor devices, has received purchase orders and final stage bidding activities for a total of USD 36 million from two new China-based customers that manufacture analog and power IC devices.
ClassOne's Solstice plating system selected for advanced MicroLEDs Semiconductor equipment manufacturer ClassOne Technology announces the sale of its Solstice GoldPro electroplating system to an unnamed developer of microLED technology for advanced applications.
Jenoptik: order intake down on prior year; order backlog slightly up From January through early March business performance was in line with expectations, but clear impacts of the corona pandemic and increasing uncertainty within the automotive industry became apparent from late March on.
Smiths Detection completes acquisition of PathSensors Smiths Detection has completed the acquisition of PathSensors, a bio-technology solutions and environmental-testing company, based in Baltimore, MD, USA.
Saab divests Dutch-based QPS Saab has divested the Dutch-based company QPS (Quality Positioning Services), a provider of hydrographic software solutions within the global maritime industry. The decision is in line with Saab’s strategy to optimise its product portfolio and increase focus on five core areas.
Eyeing SiC and GaN potential – GlobalWafers team up with NCTU Advancements in 5G and electric vehicle technologies are bringing the mounting demands of power semiconductor. GlobalWafers is teaming up with the National Chiao Tung University (NCTU) to develop the third generation semiconductor material.
Phison expands with new R&D centre Taiwanese NAND Flash controller IC and storage solutions provider, Phison Electronics, broke ground on a new R&D center and inventory management in Guangyuan Science Park in Zhunan township, back in late march.
Infineon swings to loss as the pandemic continues impact target markets “Infineon has so far coped well with the challenging situation caused by the coronavirus pandemic. As a company, we reacted quickly to the new situation and established a framework that has enabled us to stabilize our business,” says CEO Dr. Reinhard Ploss.
Murata completes new production building The Japanese manufacturer’s subsidiary, Izumo Murata Manufacturing, has completed the construction of a new production facility which started back in August 2019.
Analog Devices team up with Intel to address 5G network design challenges The companies are collaborating to create a flexible radio platform that addresses 5G network design challenges and will enable customers to scale their 5G networks more quickly and economically.
Atlas Copco has acquired the technology and operating assets of iTrap The Swedish company has acquired a technology for process diagnostics and control in the semiconductor industry.
Goodix closes acquisition of Dream Chip Technologies Shenzhen Goodix Technology Co. Ltd., an integrated solution provider, has completed its acquisition of Dream Chip Technologies GmbH (DCT), a fabless German semiconductor technology company.
Rebound Electronics team up with IHS Markit The pace of change in the electronics industry continues unabated for all customer types – OEM, ODM and EMS. This is driven by all component manufacturer types – including semiconductor, passive, connector and electromechanical – dynamically changing pricing, lead time, life cycle management and more.
New management takes the reins at Würth Elektronik eiSos As of the 1st of May 2020, Dirk Knorr and Josef Wörner have been appointed as General Managers for the German business of the Würth Elektronik eiSos GmbH & Co. KG, having been a part of the management circle of the company for years.
Seasoned financial and semiconductor executive joins GlobalFoundries GlobalFoundries has appointed David Reeder as its new Chief Financial Officer (CFO).
Global Semiconductor Packaging Materials Market to Reach $20.8 Billion by 2024 The global semiconductor packaging materials market will track chip industry growth to expand from USD 17.6 billion in revenue logged in 2019 to USD 20.8 billion in 2024, a 3.4% Compound Annual Growth Rate (CAGR), SEMI and TechSearch International forecast.Load more news