MIC4422中文资料9 A MOSFET Gate Driver数据手册Microchip规格书

描述 Description

MIC4421 and MIC4422 MOSFET gate drivers are rugged, efficient, and easy to use. The MIC4421 is an inverting driver, while the MIC4422 is a non-inverting driver.Both versions are capable of 9 A (peak) output and can drive the largest MOSFETs with an improved safe operating margin. The MIC4421/4422 accepts any logic input from 2.4 V toVS 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.MIC4421/4422 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 insures 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

• High peak-output current: 9 A peak (typical)
• Wide operating range: 4.5 V to 18 V (typical)
• Minimum pulse width: 50 ns
• Latch-up proof: fully isolated process is inherently immune to any latch-up.
• Input will withstand negative swing of up to 5 V
• High capacitive load drive: 47,000 pF
• Low delay time: 15 ns (typ.)
• Logic high input for any voltage from 2.4 V to VS
• Low equivalent input capacitance (typ.): 7 pF
• Low supply current: 500 µA (typ.)
• Output voltage swing to within 25 mV of ground or VS

简介

MIC4422属于集成电路（IC）的栅极驱动器。由Microchip制造生产的MIC4422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。