从降压稳压器得出负辅助输出的设计方法

Design Method of Negative Auxiliary Output from Low-dropout Regulators

在采用降压开关功率开关转换器降低正输入电压的同时,通常还需要一个额外的低功率负输出电压。本文给出了两种从一个主降压稳压器的功率级得出一个第二负输出的方案,这两种方案具有广泛的实用价值。

When we use low-dropout switching power switching converter to reduce positive input voltage, we usually need an extra lowpower negative output voltage. This article provide two programs which can get the second negative output from the power level of a main low-dropout regulator.