电路升压对功率无要求,最好是零电流,即只需要升压,不关心功率,希望大家推荐个设计方案,谢谢!
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你是希望1.5V就直接启动升压的么?还是5V启动,然后降到1.5V仍然可以工作?如果是后者TPS55332是可以的;前者的话,建议分两级实现,先charge pump升压至5V左右,再升压至20V。可以直接利用WEBENCH软件选择所需芯片。
Hi
1.5V电压太低,需要做2级转换,或者说自少要将1.5V升上去做供电。