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AC-switch gate driver IC includes supervisor

Geneva—STMicro says its STCC08 is the first solid-state AC-switch driver to integrate switch-supervision, allowing designers to save board
space and reduce workload with a straightforward solution for mains-powered devices designed to meet IEC60335-1 and IEC60730-1 safety standards.

In mains-powered appliances and electrical controls, using the STCC08 controller will ease the appropriate FMEA (failure mode effect analysis) process. The STCC08's supervisor capability meets IEC60335 by detecting short-circuit or open-circuit failures, as well as diode-mode failure of a solid-state AC switch in both
half-AC-line polarities. The device detects true switch status, and generates a logic signal to a microcontroller (MCU), which implements the diagnostic using a simple
two-input truth table. In insulated applications, the STCC08 output is also able to drive an opto-transistor.

The STCC08's gate driver is capable of sinking up to 25 mA to drive a directly connected AC switch, and supports continuous, pulsed, or angle-phase modes. The output current is regulated using an external resistor.

Designed for connection in parallel with the power path, the STCC08 delivers a robust solution able to withstand EMI fast transients up to 4 kV, thereby meeting IEC61000-4-4.

Datasheet : Click here.

Pricing :The STCC08, which can operate from 3.3 or 5 volts, is offered in a surface-mount ECPOACK SO-8 package, and is available now for 27 cents each in quantities of 50k.

STMicroelectronics , 1-781-861-2650, www.st.com

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