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

技术特性

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

功能框图

L6743Q 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
L6743QTR	Active		1000	VDFPN 10 3x3x1.0	Tape And Reel
L6743Q	Active		1000	VDFPN 10 3x3x1.0	Tube

DATASHEET

描述	版本	大小
L6743Q : DS5429: High current MOSFET driver	2	345KB

DATA BRIEF

描述	版本	大小
High current MOSFET driver	1	173KB