[原创] ST STGAP2SCM电流隔离4A单个栅极驱动器解决方案

ST公司的STGAP2SCM是电流隔离1700V单个栅极驱动器,能隔离栅极驱动通路与低压控制电路和接口电路.驱动电流4A,并具有轨到轨输出,是得器件适合于大功率逆变器应用如工业应用中的马达驱动器.器件有两种不同的配置:单独输出引脚允许采用专用栅极电阻来单独优化开和关闭状态.其二,单输出引脚和米勒箝位功能在半桥拓扑中快速换向时避免出现栅极尖峰.两种配置具有高度灵活性,并大大降低了外接元件.器件集成的保护功能包括UVLO和热关断.而双输入引脚可选择控制信号的极性,同时可实现HW联锁保护,以避免控制器故障时所出现的交叉导通.输入到输出传输时延在80ns内,提供高PWM控制精度.栅极驱动电压高达26V,带延迟的3.3V,5V TTL/CMOS输入,主要用在家用电器,工厂自动化,工业驱动和风扇的马达驱动,600V/1200V逆变器,电池充电器,电感加热,焊接,UPS,电源单元,DC/DC转换器以及功率因素修正.本文介绍了STGAP2SCM主要特性,框图,多种应用电路以及评估板EVALSTGAP2SCM主要特性,电路图,材料清单和PCB设计图.

The STGAP2S is a single gate driver whichisolates the gate driving channel from the low　voltage control and interface circuitry.

The gate driver is characterized by 4 A capabilityand rail-to-rail outputs, making the device alsosuitable for high power inverter applications suchas motor drivers in industrial applications.The device is available in two differentconfigurations. The configuration with separatedoutput pins allows to independently optimizeturnonand turn-off by using dedicated gate resistors.

A configuration featuring single output pin andMiller clamp function prevents gate spikes duringfast commutations in half-bridge topologies.
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