关键词：电源管理 栅极驱动器 马达驱动 DC／DC转换器 UPS ST STGAP2HD
时间：2022-03-02 15:18:41 来源：中电网
ST公司的STGAP2HD是两路栅极驱动器,在每路栅极驱动通路和低压控制和接口电路间提供电气隔离. 栅极驱动器具有4A电流能力和轨到轨输出,使它非常适合用在中高功率应用如功率转换和工业马达驱动器逆变器.分立输出引脚允许采用专用栅极电阻单独优化开通和关闭,而米勒钳位 (Miller CLAMP)功能则允许在半桥拓扑在快速换向时避免出现栅极尖峰.器件集成了保护功能如专用的SD和BRAKE引脚可用,UVLO和热关断也包括,方便了设计高可靠系统.在半桥拓扑,交错功能防止输出同一时间处在高电平,从而避免在错误逻辑输入指令出现穿通的条件.互锁功能能用专用的配置引脚禁用,这样就允许两路能单独和并行工作.器件的电压高达1200V,dV/dt瞬态免疫±100 V/ns,输入到输出总时延为75ns,栅极驱动电压高达26V,带延迟的3.3V,5V TTL/CMOS输入,6kV电气隔离,采用宽体SO-36W封装.主要用在工业驱动,工厂自动化,家用电器和风扇的马达驱动,600V/1200V逆变器,电池充电器,电感加热,焊接,UPS,电源单元,DC/DC转换器和功率因素修正(PFC).本文介绍了STGAP2HD主要特性,框图, 极和双极栅极驱动电源配置图和演示板EVALSTGAP2HDM 主要特性,电路图,材料清单和PCB设计图.
The STGAP2HD is a dual gate driver which provides galvanic isolation between each gate driving channel and the low voltage control and interface circuitry. The gate driver is characterized by 4 A current capability and rail-to-rail outputs, making it suitable for mid and high power applications such as power conversion and industrial motor driver inverters. The separated output pins allow to independently optimize turn-on and turn-off by using dedicated gate resistors, while the Miller CLAMP function allows avoiding gate spikes during fast commutations in half-bridge topologies. The device integrates prote..
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