求9~18V输入,输出15V,20A, DC-DC非隔离电源解决方案,有没有合适的芯片可以提供?
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可以使用外置MOS,能否推荐哪款芯片可以?
输入端使用蓄电池,输出可能用来驱动电机,具体情况不详。
谢谢!
请评估一下以下两种方案,哪一个较为可行?
1)二极管采用多个并联;
2)Buck-Boost可否并联?即采用两个15V/10A的并联得到20A的输出电流。
谢谢!
buck-boost可以并联,但是要考虑均流问题。
建议采用多个二极管并联,同时采用TPS25118的最低开关频率,因为你的电流很大,开关频率高开关损耗大。
二极管和mos管最好都要加装散热片
thanks for your advice.
in addition, the current share needs additional method for current share? just like UCC39002?
you are right that the heatsinks for diodes and mosfets is necessary. it is terrible without heatsinks.