ACPL-34JT IGBT Gate Drive Optocoupler Broadcom ACPL-34JT IGBT Gate Drive Optocoupler with 2.5 Amp R²Coupler™ features fast propagation delay with excellent timing skew performance. Avago IGBT Gate Drive Optocoupler offers smart integrated features to protect the IGBT, including IGBT desaturation sensing with soft-shutdown protection, fault feedback, under voltage lockout, and feedback and active Miller current clamping.