在设计有源器件时,有时会出现线性稳压器或开关稳压器是否更适合设计的问题。
了解两者之间的差异可以帮助您为您的应用程序做出正确的选择。
线性稳压器
开关稳压器
设计灵活性
巴克
降压(显示),升压,降压 - 升压
效率
低到中(当Vin和Vout之间的差异很小时)
高
Complexibility
易于设计
设计复杂
波纹&
噪声
无纹波,低噪音,更好的噪音抑制
中到高,取决于开关频率
如您所见,开关稳压器的主要优势在于其能效,而线性稳压器的主要优势在于其简单,低噪声的操作。
有关更多详细信息,请参阅我们的TechZone文章,了解线性稳压器的优缺点。
以上来自于谷歌翻译
以下为原文
When designing a powered device, the ques
tion sometimes arises of whether a Linear Voltage Regulator or a Switching Regulator is more suitable for the design. Understanding the differences between the two can help you make the right choice for your application.
[tr]Linear Voltage RegulatorSwitching Regulator[/tr]
Design Flexibility | Buck | Buck(shown),Boost, Buck-Boost |
Efficiency | Low to Medium (when small difference between Vin and Vout) | High |
Complexibility | Easy to design | Complex in design |
Ripple & Noise | No ripple, low noise, better noise rejection | Medium to high, depends on switching frequency |
As you can see, the primary advantage of switching regulators is their energy efficiency, while the primary advantage of linear regulators is their simple, low-noise operation.
For more details, please refer to our TechZone article, Understanding the Advantages and Disadvantages of Linear Regulators.