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TPS62120实测低功耗下电源效率不够高啊

Other Parts Discussed in Thread: TPS62120

FAE你好,

最近在做一个低功耗过检的项目,经过选择使用了TPS62120,整板使用TPS62120   (12V转5V,5V转3V3),实测板子12V输入下电流25MA,而使用SY8120(12V转5V,5V转3V3)输入电流仅2.2mA,因为当初选择TPS62120就是为了低功耗下希望电源芯片的效率能高一点,但是实测效果很差,请帮忙分析下是不是使用的时候有些注意事项没有照顾到,盼回复,谢谢