Photocouplers suit green energy applications

Farnell is now shipping new smart gate driver photocouplers from Toshiba. Available for fast delivery, the photocoupler range includes the TLP5212 and TLP5222 devices which suit a range of applications including: inverter circuits used in industrial control equipment; power conditions in solar power systems and UPS; and residential home battery systems. The devices’ features help users benefit from increased space and system cost savings.

Both devices offer functions including VCE (sat) or VDS (sat) detection, Miller clamping and a fault outputting function plus general-purpose gate driver coupler to protect the IGBT from overcurrent generated in the inverter stage.

The Miller clamping function suppresses gate potential rise and IGBT malfunction by bypassing the Miller current generated when the IGBT is turned off to ground. The TLP5212 requires an input-side signal to resume from shutdown protection, while the TLP5222 resumes automatically after a specified time. The package is a low profile SO16L with -40 to 110°C operating temperature.