L6741| Datasheet

Datasheet preview, take a look at Datasheets before downloading (Data Sheet is available on manufacturer site)

L6741
High current MOSFET driver
Data Brief

Features

Dual MOSFET driver for synchronous rectified converters High driving current for fast external MOSFET switching High frequency operation Integrated bootstrap diode Adaptive dead-time management Flexible gate-drive: 5V to 12V compatible High-impedance (HiZ) management for output stage shutdown Preliminary OV protection SO8 package
SO8

Description
L6741 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. L6741 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. L6741 embeds preliminary OV Protection: after Vcc overcomes the UVLO and while the device is in HiZ, the Low-Side MOSFET is turned ON to protect the load in case the output voltage overcomes a warning threshold protecting the load from High-Side MOSFET failures. The d
river is available is SOP8 package.

Applications

High current VRM / VRD for Desktop / Server / Workstation CPUs High current DC / DC converters

Table 1.

Device summary
Part Number Package SO8 SO8 Packaging Tube Tape & Reel

L6741 L6741TR

March 2007

Rev 1

1/7
www.st.com 7

For further information contact your local STMicroelectronics sales office.