Semtech – Solid-state relay driver performs measurements and power-harvesting functions


The TS13401 from Semtech is a galvanically isolated power FET driver IC with bi-directional blocking. The maximum voltage is governed by the external FET selection.

The TS13401 supports several sensing and measurement functions: the switch state, load current, supply voltage and device temperature can all be sampled. In addition, the TS13401 supports energy harvesting from the load and power transfer from the system’s AC supply to a low- voltage controller domain.

The chip includes several protection features. The switch will open in self-protection if the current or temperature limits are exceeded. For safety the switch will remain open until a new turn-on sequence is triggered.