Vishay - New 1A output current integrated power phototriac
Published Sep 1 2008 [Printer friendly version] [Email article to a friend] [More Power articles]
Enhancing its optoelectronics portfolio, Vishay has announced the release of
an integrated power phototriac that outputs currents up to 1A to drive
resistive and inductive loads.
Offered in the 16-pin DIP package, the VO3526 consists of a GaAs infrared
LED that is optically coupled to a monolithic photosensitive
non-zero-crossing TRIAC detector chip. This in turn powers on an integrated
power TRIAC. By eliminating the need for an external power TRIAC, the device
cuts design costs and saves board space.
Rated at 600V blocking voltage, the power phototriac can provide isolation
between DC and AC voltages on 120V and 240VAC lines, giving designers a 2X
or better safety factor. For additional safety, the device offers an
input-to-output isolation voltage of 5300V. A low 10mA input trigger current
facilitates an easy interface with digital logic.
The VO3526 can be used as a solid-state relay. Optimized for noisy
environments, typical applications for the new device include home
appliances such as air conditioners, refrigerators, dishwashers, washer /
dryers, and oven ranges, says the company.
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