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TPS563201: DCDC芯片给控制器供电的问题

Part Number: TPS563201

有三个问题请教:

1. 这颗芯片转出3.3V可以直接给控制器供电吗?比如是STM32F407?

2. 是否需要加LDO?

3. DCDC芯片失效后是直通吗,有什么预防措施?