MIC4451中文资料12 A MOSFET Gate Driver数据手册Microchip规格书

描述 Description

MIC4451 and MIC4452 CMOS MOSFET gate drivers are tough, efficient, and easy to use. The MIC4451 is an inverting driver, while the MIC4452 is a non-inverting driver. Both versions are capable of 12 A (peak) output and can drive the largest MOSFETs with an improved safe operating margin. The MIC4451/4452 accepts any logic input from 2.4 V to VS without external speed-up capacitors or resistor networks. Proprietary circuits allow the input to swing negative by as much as 5 V without damaging the part. Additional circuits protect against damage from electrostatic discharge. MIC4451/4452 gate drivers can replace three or more discrete components, reducing PCB area requirements, simplifying product design, and reducing assembly cost. Modern Bipolar/CMOS/DMOS construction guarantees freedom from latch-up. The rail-to-rail swing capability of CMOS/DMOS helps ensure adequate gate voltage to the MOSFET during power up/down sequencing. Since these devices are fabricated on a self-aligned process, they have very low crossover current, run cool, use little power, and are easy to drive.

特性 Features

• BiCMOS/DMOS construction
• Latch-up proof: fully isolated process is inherently immune to any latch-up.
• Input will withstand negative swing of up to 5 V
• Matched rise and fall times 25 ns
• Wide operating range 4.5 V to 18 V
• High capacitive load drive 62,000 pF
• Low delay time 30 ns (typical)
• Logic high input for any voltage from 2.4 V to VS
• Low equivalent input capacitance 7 pF (typical)
• Low supply current 450 µA with logic 1 input
• Low output impedance 1.0 Ω
• Output voltage swings within 25 mV of ground or VS.

简介

MIC4451属于集成电路（IC）的栅极驱动器。由Microchip制造生产的MIC4451栅极驱动器栅极驱动器电源管理集成电路 (PMIC) 可用于提供隔离、放大、参考位移、自举或其他必要功能，这些功能可将来自电源转换应用中控制设备的信号连接到电源被控制通过的半导体设备（通常为 FET 或 IGBT）。任何特定设备提供的确切功能各不相同，但与它适合驱动的半导体配置相关。