Quad-channel digital isolators are for industrial and automotive applications

Infineon Technologies’ ISOFace quad-channel digital isolators are available in two categories. The ISOFace 4DIRx4xxHA family is AEC-Q100-qualified for automotive applications such as onboard chargers, battery management systems, inverters, and motor control. The ISOFace 4DIRx4xxH family is qualified according to JEDEC and is designed for industrial applications such as renewables, servers, telecomms, industrial switch mode power supplies (SMPS), industrial automation and isolated serial peripheral interface (SPI).

The quad-channel digital isolators are supplied in a wide-body 300 mil PG-DSO-16 package with four data channels to enhance isolation and ensuring reliable data communications in demanding environments, said Infineon.
Operating supply voltage ranges from 2.7 to 6.5V but low current consumption remains efficient, capping at 1.6mA per channel when operating at speeds up to 1Mbits per second with a 3.3V supply voltage and a 15pF load capacitance.

Infineon’s Coreless Transformer (CT) technology provides high immunity against system noise (common mode transient immunity of minimum 100 kV per microsecond and withstands up to 5700V rms isolation voltage.

They are rugged for challenging environments with extreme temperatures. For automotive applications, they are able to function effectively within Grade I ambient temperature conditions, enduring temperatures as low as -40 degrees C and as high as +125 degrees C. They can handle various environmental challenges, such as voltage transients, EMI, ESD and electrical disturbances.

According to Infineon, the low propagation delay and minimal channel-to-channel mismatch mitigate the risk of corruption and safeguards data integrity. Pin-to-pin compatibility adds stability to power supplies, improving overall system reliability.
The isolators minimise signal noise over a wide supply voltage range, and timing performance and compatibility features enable high power density designs, added the company. Component-level and system-level certification simplifies safety approvals and speeds time-to-market, making ISOFace digital isolators a valuable choice for robust and efficient electronic systems.

There are 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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