High-current control photorelays for industrial applications

27th September 2016

Toshiba

Enaie Azambuja

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Toshiba Electronics Europe has announced four new compact control photorelays capable of handling currents in the range of 1.7A to 4A. The high-current devices in 2.54SOP4 and 2.54SOP6 packages are ideal for industrial applications such as programmable logic controllers (PLCs), battery management systems (BMS) and factory automation inverters.

The TLP3106, TLP3107, TLP3109 are supplied in 2.54SOP6 packages and have maximum current/voltage (VON/VOFF) ratings of 4A/30V, 3.3A/60V and 2A/100V respectively. The TLP3127 in a 2.54SOP4 package is rated for 1.7A and 60V.

All of the devices use Toshiba’s latest generation trench MOSFET technology. This allows them to control large currents at levels equivalent to those usually handled by mechanical relays. And because there are no mechanical contacts, the photorelays produce less noise than conventional relays and do not suffer the deterioration associated with contacts wearing.

By using 2.54SOP packaging, the new devices offer significant space savings compared to conventional DIP form factors. The 2A TLP3109, for example, reduces mounting volume by approximately 40% and product height by approximately 50% compared to other generations of DIP devices.

In addition, the small size means that the photorelays can be mounted on the rear surfaces of printed circuit boards, contributing further to system size reduction.

The TLP3106, TLP3107 and TLP3109 have a maximum off-state current (IOFF) of 20nA. Respective typical on resistances (RON) for the devices are 0.02, 0.03 and 0.04. In the case of the TLP3127, maximum IOFF is 10nA and typical RON is 0.08. All of the photorelays have a rated isolation voltage (BVS) of min. 1500Vrms.