Product Overview
L6491D from ST is a 600V half-bridge gate driver with 4A output. 50ns/35ns rise/fall time. Interlocking, UVLO, OCD. SOIC-14.
Working Principle
High-side driver level-shifted from bootstrap supply. Low-side driver referenced to COM. Interlocking prevents shoot-through. UVLO on both channels. Overcurrent detection via DESAT. Differential input for noise immunity.
Pin Description
| Pin | Name | Function |
|---|---|---|
| 1 | IN/SD | PWM input/shutdown |
| 3 | HVG | High-side gate |
| 5 | LVG | Low-side gate |
| 8 | BOOT | Bootstrap |
Applications
- Motor drive inverters
- Switched-mode power supplies
- Induction heating
Alternative Models
| Manufacturer | Part Number | Notes |
|---|---|---|
| ST | L6490D | Similar gate driver |