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关于使用TPS65070给OMAP-L138供电的问题

Other Parts Discussed in Thread: OMAP-L138, TPS65070

你好 

        在我的设计中使用TPS65070给OMAP-L138供电,由于TPS65070中的LDO2的功率太小(200mA),而我还需要1.8V同时给2个DDR2供电,所以我打算用DCDC2(设置成1.8V输出)同时给OMAP-L138的DDR模块和DDR2供电,而且OMAP-L138中的I/O供电采用DCDC1中的3.3V,如下图所示。

考虑到OMAP-L138的上电顺序,我这种方式连接的话,上电顺序为DCDC3-->LDO2-->DCDC2-->LDO1-->DCDC1

这样做可以吗?在DCDC2和LDO1之间还需不需要加如下图所示的延时器件?