Power IC photovoltaic relays tout low on-state resistance
1 November 2006
Opto-Electronics
International Rectifier has introduced a series of photovoltaic relays for applications including power supplies, power distribution, audio equipment, and instrumentation, computers and computer peripherals.
Compared to its predecessor, the PVN012A family offers a 50% reduction of AC/DC on-state resistance (RDD-on) and 37,5% increase of maximum AC/DC load current rating at full (100%) duty cycle. The new series is also rated for maximum pulsed (surge) load current.
With extremely low on-resistance and high volumetric load current density in such a small package, the PVN012A family exceeds the performance capabilities of traditional electromechanical relays. According to the manufacturer, when compared to traditional electromechanical relays, the PVN012A family offers a smaller footprint, high input-to-output isolation, bounce-free operation, solid-state reliability, stable on-resistance over life, and greater input sensitivity.
These new 20 V single-pole, normally open, solid state relays use a HEXFET MOSFET output switch, driven by a unique integrated photovoltaic generator circuit. The output switch is controlled by radiation from a GaAlAs light-emitting diode that is optically isolated from the photovoltaic generator. The new series is available in 6-pin DIP and 6-pin SMT.
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