ADI ADuM4122隔离式栅极驱动器解决方案
ADI公司的ADuM4122是单栅极可调电压摆率的隔离式栅极驱动器,每个输出引脚2 A输出电流,3 A 峰值短路电流,CMOS 输入逻辑电平,高共模瞬变抗扰度大于150 kV/µs,高工作结温为125℃,符合 UL 1577认证.宽体8引脚SOIC封装的ADuM4122提供5 kV rms绝缘,绝缘元件组合了CMOS和单片变压器技术,提供了比其它器件如脉冲变压器和栅极驱动器组合更优越的性能.ADuM4122输入电源电压为3.3V到6.5V,和低电压系统兼容.因此,在输入和输出区提供真正的电流隔离.主要用在开关电源,隔离IGBT和MOSFET栅极驱动器,以及其工业逆变器.本文介绍了ADuM4122主要特性,功能框图以及评估板EVAL-ADuM4122EBZ主要特性,电路图,材料清单和PCB设计图.
The ADuM4122 is an isolated, single device, dual output driver that uses iCoupler® technology to provide precision isolation. The ADuM4122 provides 5 kV rms isolation in the wide-body, 8-lead SOIC package. These isolation components combine high speed complementary metal-oxide semiconductor (CMOS) and monolithic transformer technology to provide performance characteristics superior to alternatives (such as a combination of pulse transformers and gate drivers).
The ADuM4122 operates with an input supply voltage range from 3.3 V to 6.5 V, providing compatibility with lower voltage systems. Unlike gate drivers that employ high voltage level translation methodologies, the ADuM4122 offers true galvanic isolation between the input and the output regions.
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