Photocouplers for industrial automation, solar inverters, maximise board space

Five 8.2mm creepage photocouplers have been introduced by Renesas Electronics. Models in the RV1S92xxA and RV1S22xxA families are claimed to be the world’s smallest isolation devices for industrial automation equipment and solar inverters, with a package width of 2.5mm.

The five models are RV1S9260A, a 15Mbits per second communications coupler, the RV1S9213A is an intelligent power module (IPM) driver, the RV1S2281A is a DC input, transistor output model, the RV1S2211A is a low DC input current, transistor output version and the RV1S2285A is an AC input, transistor output coupler.

All reduce PCB mounting area by 35 per cent compared to competitive couplers, says Renesas.

Their size helps designers shrink equipment size, increase robot axes, and improve factory floor productivity. They also meet the needs of the zero-energy house that requires smaller solar equipment for more installations in limited space, adds Renesas. The RV1S92xxA and RV1S22xxA photocouplers are suitable for DC to AC power inverters, AC servo motors, programmable logic controllers (PLCs), robotic arms, solar inverters, and battery storage and charging systems.

The RV1S9260A and the RV1S9213A IPM are the first photocouplers to use tiny LSSO5 packages with a 0.65mm pin pitch. This is half the pitch of conventional packages. With a package height of 2.1mm, the photocouplers can be directly mounted on the back of a PCB, freeing up valuable space for topside mounted components.

The RV1S92xxA photocouplers’ electric isolation and high CMR noise rejection (50kV per micro second) protects low voltage microcontrollers and I/O devices from high voltage circuits when transferring high-speed signals.

The RV1S2281A and RV1S2211A are DC input and low DC input, transistor output photocouplers, and the RV1S2285A is an AC input, transistor output coupler. The RV1S22xxA devices also provide 8.2mm creepage distance, 2.5mm package width and 2.1mm package height. They are supplied in LSSOP packages with a 1.30mm pin pitch.

All five photocouplers deliver 5,000Vrms reinforced isolation and high temperature operation to withstand harsh operating environments. The RV1S92xxA and RV1S22xxA photocouplers support 200V and 400V systems with reinforced insulation to meet industrial safety standards. All five devices adhere to the strict UL61800-5-1 standard for motor drive equipment, and the UL61010-2-201 standard for control devices such as PLCs.

The RV1S92xxA and RV1S22xxA photocouplers are available now.

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