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TPS65252工作电流,为什么没有达到 手册的3A,和2A????

Other Parts Discussed in Thread: TPS65252

采用TPS65252供电,9V 输入,输出BLUK1 为5V 3A, BLUK2 为 3.3V 2A,但是测试发现,当3.3V电流超过400mA时,会出现大约10ms的断电脉冲(估计是过流保护),如下图:(同样5V也是在超过过600mA时,出现以下现象,这回标称的3A,2A差太远了吧???)

                                           

原理图: