Infineon extends SSI portfolio with compact ISSI20BxxF family for industrial automation applications

Infineon Technologies introduces the ISSI20BxxF Solid State Isolator (SSI) family, bringing solid-state isolation technology into high-volume applications traditionally served by photovoltaic isolators (PVIs), photovoltaic relays (PVRs), and electromechanical relays (EMRs). Housed in a compact PG-DSO-8 150 mil package with a footprint comparable to existing PVI solutions, the new family gives designers a direct upgrade path to SSI technology in space-constrained designs while benefiting from higher drive capability, integrated protection features and flexibility in power-switch selection. Target applications include solid-state relay modules, PLC input/output, industrial automation, laboratory DC power supplies, automated test equipment, low-voltage building automation, and telecom infrastructure.

The ISSI20BxxF family is built on Infineon's proprietary coreless-transformer technology, which transfers both signal and energy across the isolation barrier to drive external power switches without requiring a dedicated isolated gate supply. This approach delivers higher output-drive capability than conventional PVI-based solutions, enabling compatibility with a broad range of external power switches. Integrated protection functions include over-current protection, over-temperature protection, fast fault turn-off, and latch-off capability, reducing the need for external protection circuitry and improving system robustness. Selected variants additionally support dynamic Miller clamp and fast turn-on functionality for applications with more demanding switching requirements (more info).

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