NOVOSENSE Announces Quad-Channel Digital Isolators NSI824xWx for Industrial and Automotive Applications

PublishTime： 2024-01-25 Article Source：NOVOSENSE News

NOVOSENSE Microelectronics, a semiconductor company specializing in high-performance analog and mixed-signal integrated circuits (ICs), has expanded its family of digital isolators with quad-channel devices that provide the performance and protection demanded by the latest industrial and automotive applications. The new NSI824xWx high-reliability digital isolators provide compact and efficient protection and level shifting in applications ranging from solar inverters and energy storage to industrial automation and electric vehicles.

UL1577-qualified for safety, the ultra-wide body NSI824xWx industrial-grade isolators and automotive-grade isolators combine robust EMC performance with high levels of protection against system-level electrostatic discharge (ESD), electrical fast transients (EFTs), and voltage surges. Each device offers an insulation voltage of up to 8kVrms, chip-level ESD HBM protection to ±8kV, and common-mode transient immunity (CMTI) of up to 200kV/μs.

The isolators are available with options for four forward channels, three forward and one reverse channel, or two forward and two reverse channels. The default output state on power loss can be set to low or high. Channel speeds up to 150Mbps are supported, while a wide input voltage range of 2.5V to 5.5V simplifies level shift operations by ensuring compatibility with a wide variety of digital interfaces. A low power consumption of 1.5mA per channel (at speeds of 1Mbps) helps designers meet system efficiency targets.

As with all members of the range, the latest NSI824x Quad-Channel Digital Isolators devices employ an adapted capacitive isolator technology in which the digital signal undergoes modulation by an RF carrier generated on the transmitter side and is then demodulated on the receiver side. Subsequently, the signal is transmitted via a capacitive isolator and demodulated on the receiver side. The use of NOVOSENSE's proprietary Adaptive OOK® modulation technology is key to robust performance, which includes high noise resistance and low EMI.

The devices are supplied in an SOWW16 package, can support 15mm creepage distance operate across a wide temperature range of -55℃ to 125℃, and are fully compliant with all relevant UL, CQC, CSA, and VDE safety standards. In industrial automation systems, they can be used for industrial control, industrial motor drive applications, industrial transportation, instrumentation, industrial field instruments, isolated SPI, RS232, and RS485 applications, universal multi-channel isolators, and motor control. Automotive targets will include automobile sensors, electric drives power supplies, and battery management systems.

Product Features

• Up to 8kVrms Insulation voltage (SOWW16 Package)

• Data rate: DC to 150Mbps

• Power supply voltage: 2.5V to 5.5V

• High CMTI: 200kV/μs

• Chip level ESD: HBM: ±8kV

• Robust Electromagnetic Compatibility (EMC): System-Level ESD, EFT, and Surge Immunity; Low Emissions

• Default output high level or low-level option

• Low power consumption: 1.5mA/ch (1 Mbps)

• Low propagation delay: <15ns

• Operation temperature: -55℃~125℃

• RoHS compliant package: SOP16, SSOP16, SOW16, SOWW16

Safety Certificate

• UL recognition: up to 5000Vrms for 1 minute per UL1577

• CQC certification per GB4943.1-2011

• CSA component notice 5A

• DIN VDE V 0884-11:2017-01

Application

• Industrial automation system

• Isolated SPI, RS232, RS485

• Universal Multi-Channel Isolator

• Motor control

Functional Block Diagram

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