我的想法是,
+12V,做个不隔离的降压开关型DC/DC,比如TPS54331搭一个(电流不够就并联),实现24V到12V。
-12V,做个隔离的DC/DC,实现24V到12V,然后两个12V串联,构成正负12V。
有没更简洁成熟的IC方案?
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Hi
2路并联牵涉到均流控制比较麻烦,直接用TPS5450 24V转12V /5A没有问题。
Hi
-12V可以用TPS54160/TPS54140这类buck芯片来做。