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用LM5175做电源，输入12V-26v,输出14.6v, 10A
实际输入12V,输出只有4.0v,PIN23 VCC有6.8V，VCC有150Hz低脉冲信号，请问会是什么原因？
驱动是不正常 。如下图：
LDVR2 无信号
Vcc电压波形如下图，是不是不正常？
