芯片工作在降压模式下,电流从VCC_TEC_3.3V流向到芯片的VOUT,但是此时好像是电流倒灌进分压网络,导致VFB的电压从原来的的标准电压0.5V,逐渐升高到0.6V,导致VOUT的输出电压不正常,理论上VOUT该输出1.3V,实际上VOUT输出2.3V左右,请问一下,电路那里出现问题了??(芯片在升压模式下,电流从VOUT流向VCC_TEC_3.3V,VFB电压和输出电压完全正常)
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芯片工作在降压模式下,电流从VCC_TEC_3.3V流向到芯片的VOUT,但是此时好像是电流倒灌进分压网络,导致VFB的电压从原来的的标准电压0.5V,逐渐升高到0.6V,导致VOUT的输出电压不正常,理论上VOUT该输出1.3V,实际上VOUT输出2.3V左右,请问一下,电路那里出现问题了??(芯片在升压模式下,电流从VOUT流向VCC_TEC_3.3V,VFB电压和输出电压完全正常)