TOSHIBA Photocoupler IRLED + Photo IC TLX9309 TLX9309 Inverter Control Applications Interface for Intelligent Power Modules HEV (Hybrid Electric Vehicle) and EV (Electric Vehicle) Applications Unit: mm The TOSHIBA TLX9309 mini-flat photocoupler is suitable for surface-mount assembly. The TLX9309 consists of a high-output infrared LED optically coupled to a high-speed detector, which consists of a photodiode and a transistor integrated on a single chip. Faraday shield integrated on.