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http://www.ti.com/general/docs/suppproductinfo.tsp?distId=26&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Ftpsi2072-q1″>View Datasheet
Texas Instruments TPSI2072-Q1 2-Channel Isolated Solid State Relay (SSR) is designed for high-voltage automotive and industrial applications. The TPSI2072-Q1 uses TI’s high-reliability capacitive isolation technology in combination with internal back-to-back MOSFETs to form a completely integrated solution requiring no secondary side power supply. The TPSI2072-Q1 improves system reliability as TI’s capacitive isolation technology does not suffer from mechanical wear-out or photodegradation failure modes common in mechanical relay and photo relay components.
The primary side of the device is powered by only 9mA of input current and incorporates fail-safe EN1 and EN2 pins, preventing any possibility of backpowering the VDD supply. In most applications, the VDD pin of the device should be connected to a system supply between 4.5V and 20V, and the EN1 and EN2 pins of the device should be driven by a GPIO output with logic HI between 2.1V and 20V. The VDD, EN1, and EN2 pins could be driven together directly from the system supply or a GPIO output in other applications.
Each channel on the secondary side consists of back-to-back MOSFETs with a standoff voltage of +/-600V from SM to S1 and SM to S2. The TPSI2072-Q1 MOSFET’s avalanche robustness and thermally conscious package design allow it to robustly support system-level dielectric withstand testing (HiPot) and DC fast charger surge currents of up to 2mA without requiring external components.
