Gate-drive optocoupler for medium IGBTs and MOSFETs
The TLP351H(TP1,F) is a 1-channel optical-coupling gate driver rated for 600 mA peak output current and 3750 Vrms isolation. It is built for driving medium-power IGBTs and MOSFETs in motor drives, inverters, and industrial power supplies where galvanic separation between the control and power stages is mandatory.
Parametric fit for inverter and SMPS designs
With 600 mA peak output and 400 mA source/sink capability, the TLP351H(TP1,F) directly drives gate charges up to ~1.5 µC without an external booster — typical for 600 V / 20-30 A IGBT modules. Rise and fall times are 50 ns typ, keeping switching losses low in the 10-50 kHz range. Common-mode transient immunity is 20 kV/µs minimum, double that of the earlier TLP351 (10 kV/µs). This matters in half-bridge topologies where the high-side switch sees a fast voltage swing — the optocoupler rejects the edge and avoids false turn-on. Propagation delay is 700 ns max with pulse-width distortion held to 500 ns max. For a 20 kHz PWM cycle (50 µs period), the delay is 1.4 % of the period — acceptable for most motor-drive control loops, though a faster part like the TLP352F (200 ns, 2.5 A) would be needed for higher-frequency SiC or GaN stages.
Active production — sourcing and lifecycle posture
RoHS-compliant and approved by CQC, cUR, UR, and VDE. Procurement can quote against a BOM quantity; no imminent obsolescence risk.
Temperature grade and mounting for industrial environments
Surface-mount 8-SMD Gull Wing suits automated assembly; the 1.55 V typical forward voltage at 20 mA max input current is compatible with 3.3 V or 5 V logic outputs through a series resistor.