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TPS54560: DCDC正压转负压输出EN使能脚电压参考点确认

Part Number: TPS54560

Hi,对于TPS54560输出负压时,EN使能脚接法如图,假设VIN=24V,上侧电阻90K,下侧电阻10k,EN对GND电压2.4V,但对芯片GND电压2.4+12=14.4V,请问EN脚电压是以哪个为准?