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TPS28225输入电压5V,反复启动,下管LGATE有时候波形正常,有时候没有波形。

Other Parts Discussed in Thread: TPS28225

TPS28225输入电压5V,反复启动,下管LGATE有时候波形正常,有时候没有波形。

PWM信号是0~5V,占空比50%,频率150KHz的方波,UGATE波形在输入电压反复重启时均正常,LGATE会有偶尔启动不了的状况。UGATE和LGATE只是单纯的驱动两个NMOSFET