Renesas PS9402 photocoupler

Renesas has released the company’s first photocoupler, the PS9402, with an integrated insulated gate bipolar transistor protection function.

The device comprises a gallium-aluminium-arsenide (GaAlAs) LED as the light-emitting element, a photodetector IC and an IGBT protection circuit.

It is designed to drive IGBTs used in inverter devices for purposes such as motor control. Use of the photocoupler facilitates the design of IGBT peripheral circuits and enables IGBT direct drive up to the 1200 V and 100 A class. The compact 16-pin SOP small outline package (SOP) contributes to system compactness.

Key features include: integrated IGBT protection circuit providing functionality such as short circuit detection; up to 2.5 A gate drive (max); integrated active Miller clamp circuit to prevent IGBT malfunctions; high-speed and low-power operation; delay less than 200 ns.