New DIP8 Photocoupler delivers enhanced isolation for IPM motor control

Toshiba Electronics Europe (TEE) has announced a new photocoupler IC that is able to provide a low-power, space-saving isolation interface between an IPM (intelligent power module) and its control circuitry. Combining guaranteed operation at temperatures from -40°C to 125°C with a minimum input-to-output isolation voltage of 5000Vrms (AC, 1 min), the TLP754 is suited for motor control and inverter applications designed for noisy, extended temperature industrial environments.

The TLP754 is supplied in a DIP8 package measuring just 9.6 x 7.6 x 3.6mm. A wide supply voltage of -0.5V to 30V and a wide output voltage of 4.5V to 30V enhance design flexibility, while a maximum input current of just 1.3mA meets requirements for high-efficiency designs. Data rates of 1Mbps are guaranteed thanks to a maximum propagation delay time and pulse width distortion rating of 550ns and 400ns respectively.

Toshiba’s new device is built around a long-life GaAlAs infrared LED that is optically coupled to an integrated, high-gain, high-speed photodetector IC. The photocoupler has an inverter logic open collector output. An internal Faraday noise shield ensures a guaranteed common mode transient immunity of +/- 20kV/µs.


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