L6743B is a high-frequency dual-driver designed by ST to drive N-channel MOSFETs connected in synchronous-rectified buck topology.
The L6743B is a flexible, high-frequency dual-driver specifically designed to drive N-channel MOSFETs connected in synchronous-rectified buck topology. It embeds high-current drivers for both high-side and low-side MOSFETs and accepts a flexible power supply between 5 V and 12 V.
The device features an integrated bootstrap diode, anti shoot-through management, and adaptive dead-time control to minimize efficiency losses. It includes preliminary over-voltage protection that latches the low-side MOSFET ON if the output voltage exceeds a warning threshold while in high-impedance mode.
The device accepts a flexible power supply between 5 V and 12 V.
No, it embeds an integrated bootstrap diode saving the use of external components.