Quad-channel digital isolators family for industrial and automotive applications

Infineon Technologies AG introduces its ISOFACE quad-channel digital isolators, emphasising a wider portfolio of isolation technologies.

The ISOFACE quad-channel digital isolators are offered in two categories. The ISOFACE 4DIRx4xxHA family with AEC-Q100 qualification is developed for automotive applications such as OBC, BMS, inverters, and motor control. The ISOFACE 4DIRx4xxH family is fully qualified according to JEDEC and is designed for industrial applications such as renewables, servers, telecom, industrial SMPS, industrial automation, and isolated SPI. The products come in a wide-body 300mil PG-DSO-16 package with four data channels, supplying enhanced isolation and ensuring reliable data communications in demanding environments.

The isolators provide an operating supply voltage range from 2.7V to 6.5V. Even with this wide supply voltage range, their low current consumption remains efficient, capping at 1.6mA per channel when operating at speeds up to 1Mbps with a 3.3V supply voltage and a 15pF load capacitance. Also, the company's robust Coreless Transformer technology supplies high immunity against system noise (common mode transient immunity of minimum 100kV/µs) and withstands up to 5700V rms isolation voltage.

The isolators are rugged, making them excellent for challenging environments where extreme temperatures are common. For the isolators for automotive applications, their durability is underlined by their capability to function effectively within Grade I ambient temperature conditions, enduring temperatures as low as -40C and as high as +125C. They can handle various environmental challenges, such as voltage transients, EMI, ESD, and electrical disturbances, ensuring dependable performance. Their precise timing performance, owing to low propagation delay and minimal channel-to-channel mismatch, mitigates the risk of corruption and safeguards data integrity. Also, their pin-to-pin compatibility adds stability to power supplies, enhancing overall system reliability.

The isolators are adept at minimising signal noise over a broad supply voltage range, and their precise timing performance and compatibility features allow high power density designs. Component-level and system-level certification simplifies safety approvals and speeds time-to-market, making digital isolators a valuable option for robust and efficient electronic systems.