Toshiba TLP350H 3750Vrms Gate Driver Optocoupler

TLP350H 3750Vrms Gate Driver Optocoupler by Toshiba

TLP350H is a high-speed gate driver optocoupler rated for 3750 Vrms isolation, manufactured by Toshiba. Designed for driving IGBTs and power MOSFETs, it features a totem-pole output capable of sourcing and sinking currents, supporting fast switching and excellent electrical isolation in demanding power electronics applications.

With a peak output current of ±2.5 A (max) and propagation delays of up to 500 ns (max tpLH/tpHL), the TLP350H delivers rapid switching performance for motor drives, DC/DC converters, solar inverters, and industrial automation systems. Built with a GaAlAs infrared LED and high-speed photodetector, it combines high drive capability with robust signal integrity.

The optocoupler supports operation from 15 V to 30 V supply voltage, with supply current typically around 3 mA (max 3 mA), and threshold input current (IFLH) maxed at 5 mA, ensuring compatibility with low-voltage logic interfaces. It features an operating temperature range from -40 °C to +125 °C, making it suitable for industrial and automotive environments.

The TLP350H also offers a common-mode transient immunity of ±20 kV/μs (min), aided by an internal Faraday shield that enhances noise rejection and reliability in high-voltage switching circuits.

Engineers and procurement professionals choose the TLP350H for its superior drive strength, reliable isolation, and fast switching capability in high-voltage and noise-sensitive environments. Meeting industry standards such as UL1577, cUL, EN 60747‑5‑5, and CQC, and with RoHS/lead-free compliance, it ensures safe, long-term performance for B2B power electronics implementations.

Key Specs Isolation Voltage: 3750 Vrms (min) Peak Output Current: ±2.5 A (max) Propagation Delay: 500 ns (max) Common‑Mode Transient Immunity: ±20 kV/µs (min) Supply Voltage: 15–30 V, ICC max 3 mA Threshold Input Current (IFLH): max 5 mA Operating Temperature: -40 °C to +125 °C Safety Approvals: UL1577, cUL, EN 60747‑5‑5, CQC Compliance: RoHS, Pb‑free