AC-Switch Gate Driver/Supervisor Saves Space, Increases Reliability

Promising to accelerate IEC60335 safety certification, the STCC08 debuts as the first solid-state ac-switch driver to integrate switch supervision, allowing designers to save board space and reduce workload. In mains-powered appliances and electrical controls, the controller eases the appropriate failure mode effect analysis process by integrating descriptions of 52 failure cases. The device employs unique techniques to detect true switch status and generates a logic signal interfacing to the digital input of a MCU, which implements the diagnostic using a two-input truth table. For insulated applications, the device’s output is able to drive an opto-transistor. Additionally, an integrated switch gate driver is capable of sinking up to 25 mA to drive an AC switch and supports continuous, pulsed, or angle-phase modes. Available in a surface-mount ECPOACK SO-8 package, price is $0.27 each/50,000. STMICROELECTRONICS, Lexington, MA. (888) 787-3550.