Quad-channel digital isolators for industrial power and automotive

Quad-channel digital isolators for industrial power and automotive

New Products |
By Nick Flaherty

Infineon Technologies is launching its four channel digital isolators with two types for industrial power and automotive designs.

The ISOFACE 4DIRx4xxH family is fully qualified according to JEDEC standards and is designed for industrial applications such as renewables, servers, telecom, industrial switch-mode power supplies (SMPS), industrial automation, and isolated serial peripheral interface (SPI).

The ISOFACE 4DIRx4xxHA family with AEC-Q100 qualification. is designed for automotive applications such as onboard chargers (OBC), battery management systems (BMS), inverters, and motor control.

The devices use a coreless transformer (CT technology with immunity to system noise over 100 kV/μs and 3000 V RMS isolation voltage. Dual channel versions were launched earlier in the year: Infineon launches dual channel digital isolators

Both the quad channel digital isolator families come in a wide-body 300 mil PG-DSO-16 package with four data channels, providing enhanced isolation and ensuring reliable data communications in demanding environments.

The ISOFACE quad-channel digital isolators offer an operating supply voltage range from 2.7 to 6.5 V. Even with this wide supply voltage range, their low current consumption remains efficient, capping at 1.6 mA per channel when operating at speeds up to 1 Mbps with a 3.3 V supply voltage and a 15 pF load capacitance. In addition, Infineon’s robust Coreless Transformer (CT) technology provides high immunity against system noise (common mode transient immunity of minimum 100 kV/µs) and withstands up to 5700 V rms isolation voltage.

For automotive applications, the parts function effectively within Grade I ambient temperature conditions, enduring temperatures as low as -40°C and as high as +125°C. They can handle various environmental challenges, such as voltage transients, electromagnetic interference (EMI), electrostatic discharge (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. Furthermore, their pin-to-pin compatibility adds stability to power supplies, improving overall system reliability.

The isolators are adept at minimising signal noise over a wide supply voltage range, and their precise timing performance and compatibility features enable high power density designs.

The ISOFACE quad-channel digital isolators’ productive samples for the six variants and the starter kits are available now. The remaining two variants (4DIR0400HX and 4DIR0401HX) with (4+0) configuration will be available in Q4 2023.


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