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[原创] ADI ADuM4122隔离式栅极驱动器解决方案

关键词:电源管理 开关电源 栅极驱动器 ADuM4122

时间:2020-01-10 11:15:58       来源:中电网

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.

The ADuM4122 includes two output pins that facilitat..

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