Four channel 5kV digital isolator reduces power consumption

Four channel 5kV digital isolator reduces power consumption

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By Nick Flaherty

The MAX22445 aims to protect industrial systems from the dangers of high-voltage signals twice the throughput of previous devices, providing reliable communication across the isolation barrier to ensure safe operation of compact industrial, medical and other equipment.

In high-voltage equipment, digital isolators provide signal isolation and level-shifting for proper operation of many circuits, while also protecting users from dangers such as electric shock. The device transfers signals of up to 200Mbps with 0.41mA per channel current consumption and 0.74mW power consumption at 1Mbps with a VDD of 1.8V. It is available in a 16-pin wide-body SOIC package with 8mm of creepage and clearance.

The maximum propagation delay of 10.5ns and maximum data rate of 200Mbps enable fast and accurate data acquisition and high-speed interfaces with wide timing margins. Dual barriers of isolation provide 5kVRMS and 10kV surge for reliable performance over a long product lifetime and meet the safety standards required for operator protection.

“The MAX22445 eliminates the tradeoffs between isolation reliability, dynamic performance and power consumption,” said Jeff DeAngelis, managing director, Industrial & Healthcare Business Unit at Maxim Integrated. “Engineers can now develop safe, high-throughput, compact factory automation systems.”

The MAX22445 is priced from $3.49 and the MAX22445FWEVKIT# evaluation kit is available for $32.


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