Vishay’s New Non-Zero-Crossing 1.5-kV/µs dV/dt Phototriac Optocouplers Provide Off-Line Control (1)

Vishay's New Non-Zero-Crossing 1.5-kV/µs dV/dt Phototriac Optocouplers Provide Off-Line Control of AC Voltages up to 380 V

Vishay Intertechnology, Inc. (NYSE: VSH) today announced the VO3052 and VO3053, two new non-zero-crossing 1.5-kV/µs dV/dt phototriac optocouplers designed to isolate low-voltage logic from AC voltages up to 380 V. The phototriacs consist of a GaAs infrared LED that is optically coupled to a monolithic photosensitive zero-crossing triac detector chip. A low-input trigger current facilitates an easy interface with microcontrollers and digital logic. The VO3053 requires a maximum trigger current of 5 mA to latch output, while the VO3052 requires a maximum trigger current of 10 mA. The devices are offered in the 6-pin DIP package.

Rated with a 600-V blocking voltage, the phototriacs can provide isolation between DC and AC voltages on 120-V and 240-V AC lines, giving designers a 2X or better safety factor for control of off-line voltages up to 240 V.

The VO3052 and VO3053 are designed for control of resistive, inductive, or capacitive loads, including motors, solenoids, high-current thyristors, and relays. Optimized for noisy environments, typical applications for the new devices include refrigerators, air conditioners (HVAC), dishwashers, vending machines, industrial controls, AC motor drives, switches, switching power supplies, and solenoid/valve controls.