Recently introduced by Avago Technologies is the 10 MBd HFBR-3810Z fibre-optic (FO) short link transmitter/receiver for isolating frequency inverter and power converter applications common in renewable energy installations.
In power generating wind and solar farms, fibre-optic technology is widely considered the preferred isolation technology to interface between low-voltage control logic or microprocessors and high-voltage power inverters and switching circuits.
The FO short link technology pin-to-pin distance of 24,96 mm provides transient voltage suppression of 12 kV according to IEC 60664-1. The technology allows galvanic isolation on one PCB where previously separate transmitter/receiver pairs on two PCBs were linked by plastic optical fibre for isolation. FO short link devices have creepage and clearance specifications greater than existing optocoupler devices and offer superior galvanic isolation than transformer-based technology.
The DC coupled data link does not require data encoding or digitising circuitry. The FO receiver has a CMOS/TTL output for easy interface design.
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