[原创]Onsemi NCP5156 5 kV RMS 9A隔离两路栅极驱动器解决方案

Onsemi公司的NCP5156是隔离两路栅极驱动器,分别具有4.5A/9A源和沉峰值电流,设计用于快速开关以驱动功率MOSFET和SiC MOSFET功率开关. NCP51563提供短的和相匹配传输延迟.两个单独的和从输入到每个输出的5 kVRMS内部电隔离以及两个输出驱动器间内部功能隔离允许工作电压高达1850VDC.这种驱动器能用在可配置的两种低边,两种高边开关或具有可编程死区时间的半桥驱动器.当分别设定低或高ENABLE或DISABLE模式时,ENA/DIS引脚能同时关断两个输出. NCP51563提供其它重要保护特性如两个栅极驱动器的单独欠压锁住和死区调整功能.输出电源从6.5V到30V,5V和8V用于MOSFET,13V和17V UVLO用于SiC阈值.共模瞬态免疫CMTI大于200 V/ns.主要用在马达驱动,DC/DC和AC/DC电源的隔离转换器,服务器,通信和工业基础设备以及UPS和太阳能逆变器.本文介绍了NCP5156主要特性,典型应用电路,简化框图和评估板NCP51563 EVB主要特性,功能框图,应用电路图,材料清单和PCB设计图.

The NCP51563 are isolated dual−channel gate drivers with 4.5−A/9−A source and sink peak current respectively. They are designed for fast switching to drive power MOSFETs, and SiC MOSFET power switches. The NCP51563 offers short and matched propagation delays.

Two independent and 5 kVRMS internal galvanic isolation from input to each output and internal functional isolation between the two output drivers allows a working voltage of up to 1850 VDC. This driver can be used in any possible configurations of two low side, two

high−side switches or a half−bridge driver with programmable dead time.

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