Fault protection solution for high-speed USB ports and industrial voltage applications

01-06-2018 | Maxim | Power

With the MAX22505 ±40V high-speed USB fault protector from Maxim Integrated Products, designers can now remove USB port damage from all faults, including ground potential differences, up to ±40V without the trade-offs needed by competing solutions. It protects data and power lines from industrial equipment powered at 24VAC and 40VDC, while also decreasing solution size by more than 50% for industrial voltage applications. Existing USB fault protection solutions on the market today can compromise either USB operating speed or voltage/current limit protection on a device’s data and power lines. Therefore, current solutions on the market are expensive and incapable of offering fault protection at high-speed USB performance. The device meets this market demand as claimed to be the industry’s only solution that connects high-speed USB fault protection (480Mbps) for industrial voltages, while being adaptable enough to support either host or device applications including USB OTG. It protects equipment from overvoltage or negative voltage on power and data lines, as well as ground potential differences between devices. While decreasing the solution size by half it ensures robust communications in harsh environments cost-effectively in a simpler design. Housed in a 24-pin 4mm x 4mm TQFN package, it operates over the -40C to +105C temperature range. Applications include building automation, PLCs, industrial PCs, and diagnostic USB ports.