The Toshiba TLP5702(E is a single-channel gate-drive optocoupler with a push-pull, totem-pole output stage rated for 1 A peak output current. It provides 5000 Vrms isolation between input and output, with a minimum common-mode transient immunity of 20 kV/µs. The part is designed to drive IGBTs and power MOSFETs in motor drives, industrial inverters, and switch-mode power supplies where galvanic isolation and noise immunity are critical.
1 A peak output — what it means for gate drive
The 1 A peak output current is the headline rating that determines how fast the gate capacitance of a power switch charges and discharges. For a typical IGBT with 15 nC gate charge, this driver delivers rise and fall times of 15 ns and 8 ns respectively, enabling switching frequencies well into the tens of kilohertz without excessive switching losses. The push-pull output stage provides active pull-up and pull-down, eliminating the need for an external totem-pole buffer in most designs.
5000 Vrms isolation and 20 kV/µs CMTI
The 5000 Vrms isolation rating meets reinforced insulation requirements for motor-drive and inverter applications where the control side must be safely separated from the high-voltage power stage. The 20 kV/µs common-mode transient immunity ensures the output does not glitch or latch when the power-stage midpoint switches at high dv/dt — a common failure mode in half-bridge and three-phase inverter topologies.
The part is RoHS compliant. For production planning, this means no forced redesign or last-time-buy math in the near term.