Optical coupling gate driver for IGBT and MOSFET switching
The Toshiba TLP352(TP1,F) is a single-channel optical coupling gate driver delivering a 2.5A peak output current with 3750Vrms isolation between input and output. It comes in an 8-SMD gull wing package rated for surface-mount assembly. The part is designed for driving IGBTs and power MOSFETs in motor drives, inverters, and industrial power supplies where galvanic isolation is required between the control and power stages.
2.5A peak output — which gate it drives
The 2.5A peak output current is the headline rating that determines the gate charge it can source and sink per switching cycle. With 2A typical high and low output capability, this driver comfortably handles medium-power IGBTs and MOSFETs up to the 600V/30A class in hard-switching topologies. The 15ns rise and 8ns fall times keep switching losses low, but the 200ns maximum propagation delay means you budget that dead-time margin in the PWM timing.
3750Vrms isolation and 20kV/µs CMTI
The 3750Vrms isolation rating provides the reinforced insulation barrier typical for motor-drive and industrial power applications. The 20kV/µs minimum common-mode transient immunity ensures the output stays latched correctly when the power-stage switching edges couple fast dv/dt across the isolation gap — a critical parameter in inverter designs where the floating ground jumps several hundred volts in tens of nanoseconds.
Temperature range and supply voltage
The output supply range of 15V to 30V covers standard gate-drive rails for IGBTs and MOSFETs; the typical forward voltage of 1.55V and maximum 20 mA input LED current are compatible with 3.3V or 5V logic outputs through a current-limiting resistor.
It is RoHS compliant and approved by CSA, cUL, and UL, covering North American safety certification requirements for reinforced insulation in power equipment.