请教，电源降压设计

3homer

电源降压设计请教

我现在想搞一个降压的模块，输入电压大概在24v，希望可以输出12v，5v，3.3v，3v，2.8v，2v，1.8v，可调的，
当然，不可能在一个IC上全部做到，我的想法是24v降到5v，再用LDO一个一个的降压得来，需要很多LDO了

不知需要DC－DC么？
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tnt557

maybe current should be under consideration,because of the efficiency.here came out one question.5V TO 12V with LDO,can it work?maybe that your point!

tnt557

after a second consideration, one dual PWM output IC should be perfection.one channel for 12V,the other for 5V.12V solution could integrated FET or L moreover , it depond on current.TI,intesil....have many IC meeting  that solution.those can be search on their websit!