AN1944 application note introduces TD350 advanced IGBT driver features and characteristics, including minimum 1.2A sink / 0.75A source peak output current, adjustable blanking time and fault status signal desaturation protection, active Miller clamp function, optional 2-step turn-off sequence and input stage compatible with both optocouplers and pulse transformers.
The TD350 is an advanced Insulated Gate Bipolar Transistor (IGBT) driver with integrated control and protection functions, specifically adapted for driving 1200V IGBTs with current ratings from 15 to 75A in Ecopak-like modules. Key features include desaturation protection, an active Miller clamp function to reduce induced turn-on risks, and an optional 2-step turn-off sequence to protect against over-voltage.
| IGBT Voltage Rating | 1200V |
|---|---|
| IGBT Current Rating | 15 to 75A |
| Operating Temperature Range | -20°C to 125°C |
| Minimum Sink Current | 1.2A |
| Minimum Source Current | 0.75A |
Applications include a three-phase full-bridge inverter used for motor speed control and UPS systems.
Yes, the input stage is compatible with both optocouplers and pulse transformers.
It reduces the risk of induced turn-on in high dV/dt conditions without the need for negative gate drive in most cases.