L6743B High current MOSFET driver

L6743B is a flexible, high-frequency dual-driver 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 DC-DC conversion in general. L6743B embeds high-current drivers for both high-side and low-side MOSFETs. The device accepts flexible power supply (5 V to 12 V) 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.

L6743B 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 is VFDFPN8 3 x 3 mm 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: 5 V to 12 V compatible
High-impedance (HiZ) management for output stage shutdown
Preliminary OV protection
VFDFPN8 3 x 3 mm package

功能框图

L6743B 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
L6743BTR	Active		1000	VDFPN 8 3x3x1.0	Tape And Reel
L6743B	Active		1000	VDFPN 8 3x3x1.0	Tube

DATASHEET

描述	版本	大小
L6743B : DS5863: High current MOSFET driver	1	238KB

DATA BRIEF

描述	版本	大小
High current MOSFET driver	1	124KB