• 简体中文
• English

L6743Q：High current MOSFET driver

L6743, L6743Q is a flexible, high-frequency dualdriver specifically designed to drive N-channel MOSFETs connected in Synchronous-Rectified Buck topology. Combined with ST PWM Controllers, the driver allows implementing complete voltage regulator solutions for modern high-current CPUs and DCDC conversion in general. L6743, L6743Q embeds high-current drivers for both high-side and low-side MOSFETS. The device accepts flexible power supply (5V to 12V) to optimize the gate-drive voltage for High-Side and Low-Side maximizing the System Efficiency.

The Bootstrap diode is embedded saving the use of external diodes. Anti shoot-through management avoids high-side and low-side mosfet to conduct simultaneously and, combined with Adaptive Dead-Time control, minimizes the LS body diode conduction time.

L6743, L6743Q embeds Preliminary OV Protection: after Vcc overcomes the UVLO and while the device is in HiZ, the LS MOSFET is turned ON to protect the load in case the output voltage overcomes a warning threshold protecting the output against HS failures.

The driver is available in SO8 and DFN10 3x3 packages

Key Features

• SO-8 and DFN10 3x3 packages
• Preliminary OV protection
• Flexible gate-drive: 5V to 12V compatible
• Adaptive dead-time management
• Dual MOSFET driver for synchronous rectified converters
• Integrated bootstrap diode
• High driving current for fast external MOSFET switching
• Enable pin
• High-impedance (HiZ) management for output stage Shutdown
• High frequency operation

产品规格

手册

样片和购买

质量和可靠性