资料介绍
AVAGO光耦内置的IGBT保护功能Desaturation Fault Detection
Optocoupler Gate Drive Product with Feature:
ACPL-332J, ACPL-331J and HCPL-316J
Application Note 5324
1. Introduction ii. Soft turn-off
Desaturation fault detection circuit provides protection This feature exists in Avago gate optocoupler, (e.g. ACPL-
for power semiconductor switches (IGBT or MOSFETs) 332J, ACPL-331J and HCPL-316J). When fault is detected
against short-circuit current events which may lead to by the DESAT feature, a weak pull-down device in the
destruction of these power switches. This desaturation output drive stage will turn on to ‘softly’ turn off the IGBT
of the inverters can also occur due to an insufficient and prevents large di/dt induced voltages. This d
应用范围:应用UPS、开关电源、变频器、逆变器、电动车辆、充电机、感应加热、轨道交通、电焊机以及新兴的风力发电、太阳能光伏发电、电动车等新能源行业等领域
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