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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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L6743D 데이터시트(PDF) 1 Page - STMicroelectronics |
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L6743D 데이터시트(HTML) 1 Page - STMicroelectronics |
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1 / 16 page  December 2008 Rev 1 1/16 1 L6743D High current MOSFET driver Features ■ 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 ■ SO8 package Applications ■ High current VRM / VRD for desktop / server / workstation CPUs ■ High current and high efficiency DC / DC converter Description L6743D 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 DCDC conversion in general. L6743D 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. L6743D 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 package. SO8 Table 1. Device summary Order codes Package Packing L6743D SO8 Tube L6743DTR Tape and reel www.st.com |
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