Semtech Corporation has announced the production release of the TS13102 and TS13103 solid state relays (SSRs). These new offerings enable self-powered control systems in Internet of Things (IoT) applications, such as smart thermostats, alarm panels, factory automation systems, and smart controls.
Semtech's TS13102 and TS13103 solid state relays target smart home, smart controls and IoT applications. They feature the ability to power themselves by harvesting energy from the loads they control. Image credit: Semtech Corporation. According to Semtech, the TS13102 SSR can autonomously harvest energy even when its switch is closed and without the assistance of a microcontroller. The harvested energy is stored in a system capacitor (Csys) and can be shared across multiple channels in the system driving several loads simultaneously. The TS13103 is outfitted with a power transfer output (PTO) pin to transfer the harvested energy on the other side of the isolation barrier to the controller of the system. This design allows for much smaller systems that can last decades without needing their batteries replaced. It also eliminates the need to include costly transformers and AC/DC power supplies with the system, which significantly reduces the bill of materials (BOM) cost.
Both TS13102 and TS13103 relays have a new, enhanced communication scheme that allows the controller to send specific commands through the control line (CLK) to perform a variety of functions, including receiving diagnostic information. The control and feedback lines can be shared across multiple channels, greatly reducing the system microcontroller pin count.
Key Features
The TS13102 and TS13103 SSRs share a number of key features, including a small, space-saving 16-pin 3 mm x 3 mm QFN package; the aforementioned ability to harvest energy from the load with integrated bridge diodes; and a programmable watch dog pin (WD) to safely disconnect the load after lack of activity on the CLK line.
Pricing and Availability
The TS13102 (order code: TS13102-QFNR) and TS13103 (order code: TS13103-QFNR) are available immediately in production quantities.
