Beaglebone Black原理图中使用的是DDR3L，为什么电源管理芯片不使用TPS65217D呢？

DDR3L的内存大多也兼容DDR3的1.5V电平的，所以用起来并没有问题。  我没有这个ddr的手册，你可以自己确认下。

你可以按照你自己的需求来做这个设计。

刘工，你好，我们用的电源芯片是tps65217C，做了对比测试

DDR3L leveling结果相差较大

DDR3 leveling结果一致

所以能否确认下tps65217C对DDR3L的支持是否正常，还是需要做其他处理

发了相关帖子：e2echina.ti.com/.../437543

谢谢

比较早的google群组里面有讨论（翻墙可以看到）：groups.google.com/.../

翻译过来原因是：BBB原理图是旧的原理图，里面使用的tps65217C，tps65217D是后面出的芯片

原文：

SW is supposed to set it to 1.35V. Sounds like it got dropped somewhere because initially it did.. It was designed this way because when it was designed, the PMIC defaulted to 1.5V. Since the design there is a TPS65217D that was release later that supports the 1.35V initial setting.

Yep, I meant to do that and Yes it is OK, however I prefer the SW folks fix UBoot, if it isn't too much trouble.

Gerald

兼容这个电压范围