L6569 L6569A is a high voltage half bridge driver with built-in oscillator, BCD offline technology, internal bootstrap diode structure, input voltage range up to 600V, strong driving current capability, can drive n-channel power MOSFET and IGBT. The device has an internal logic circuit to ensure a dead time of 1.25µs to avoid cross-conduction of power devices.
The L6569 (and L6569A) is a high‑voltage half‑bridge driver that integrates an internal oscillator and a patented bootstrap structure, allowing operation up to 600 V rail and delivering up to 270 mA source and 275 mA sink currents. It features low start‑up current, programmable dead‑time, and strong dV/dt immunity.
The document contains absolute maximum ratings, recommended operating conditions, detailed pin descriptions, electrical characteristics, bootstrap operation, a demo board schematic for lamp‑ballast applications, mechanical dimensions, and safety/disclaimer information. It also includes typical performance graphs such as dead‑time versus temperature and oscillator frequency versus resistor value.
| Supply Voltage (Vs) | 10 V – 80 V |
|---|---|
| Floating Supply Voltage (VBOOT) | up to 500 V |
| Oscillation Frequency | 200 kHz (programmable) |
| Typical Dead Time | 1.25 µs |
The device can operate with a floating supply (VBOOT) up to 500 V.
The internal dead time is typically 1.25 µs.
The L6569 uses an internal bootstrap structure that eliminates the need for an external diode.
The oscillator frequency is typically 200 kHz and can be programmed with external resistor and capacitor values.