New digital isolators offer robust high-voltage isolation and noise immunity

22-06-2023 | Infineon | Semiconductors

Infineon Technologies AG has introduced its first generation of ISOFACE dual-channel digital isolators to fulfil the growing demand for rugged high-voltage isolation. The new devices are pin-to-pin compatible with other suppliers' portfolios.

The new isolators are the latest addition to the company's portfolio of isolation products for various applications. These include server, telecom, industrial SMPS, industrial automation systems, motor control and drives, energy storage systems, and solar inverters. Based on its patented coreless transformer (CT) isolation technology, the new state-of-the-art ICs employ more than 20 years of expertise to provide system cost savings, streamlined design processes and fast time to market. The comprehensive product range provides multiple channel configurations, fail-safe default output states, variable or fixed input thresholds, and output enables configurations to satisfy diverse application needs.

The isolator family supplies two data channels in a narrow-body DSO-8 package, supporting data rates of up to 40Mbps and providing signal integrity across a wide operating temperature range and over the production spread. The company's robust CT technology guarantees high immunity to system noise with a CMTI of over 100kV/μs. The digital isolator family withstands up to 3000V RMS isolation voltage, resulting in reliable system operation in noisy environments with predictable data communication.

The devices' structure allows higher system efficiency in simplified, high-power-density designs with low power consumption and accurate timing performance. Both high and low default output state options are provided. Also, features such as glitch filtering, communication modulation, watchdog, and UVLO are integrated to provide robust and fail-safe data transmission even in critical industrial environments with high voltages and noise. They also supply isolation according to the most stringent standards, such as UL-1577 and IEC 60747-17 (VDE 0884-17) at the component level, and system certifications, such as IEC 62368-1.

By Seb Springall