需要设计一款使用4节(1.5V*4颗)5号电池的电源升降压5V电源,但在测试的过程中发现输出电压与设计完全对不上。测试输入的电压是锂电池(3.3~4.2V),然后输出就变成了15V的电压。多做了几颗进行测试,但是都不在稳定在5V,基本都是在4.8V输出或者没电压输出。以下是电路图及PCBLAYOUT图
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