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UCC28780芯片输出引脚RUN和PWML引脚输出电平不够高

Other Parts Discussed in Thread: UCC28780

再用UCC28780做一款ACF设计,调试过程中发现RUN和PWML引脚输出电平不足3V(数据手册中标注设计输出高电平为5V),而后面驱动的NV6117 GAN MOSFET需要4V以上电压驱动开通。

下图为测试波形,1通道为run输出,2通道为低侧GAN MOSFET DS电压, 3通道为VDD引脚电压,4通道为REF引脚电压