描述 Description

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 gatedrive 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 is SO8 and DFN10 3x3 packages.

特性 Features

SO8 and DFN10 3x3 Package
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

簡介

L6743Q屬于集成電路（IC）的柵極驅(qū)動器。由制造生產(chǎn)的L6743Q柵極驅(qū)動器柵極驅(qū)動器電源管理集成電路 (PMIC) 可用于提供隔離、放大、參考位移、自舉或其他必要功能，這些功能可將來自電源轉(zhuǎn)換應(yīng)用中控制設(shè)備的信號連接到電源被控制通過的半導(dǎo)體設(shè)備（通常為 FET 或 IGBT）。任何特定設(shè)備提供的確切功能各不相同，但與它適合驅(qū)動的半導(dǎo)體配置相關(guān)。