开关电源的拓扑指开关电源电路的构成形式。一般是根据输出地线与输入地线有无电气隔离，分为非隔离及隔离变换器。非隔离即输入端与输出端相通，没有隔离措施，常见的DC/DC变换器大多是这种类型。-Switching power supply topology refers to the form of switch power supply circuit. Is generally based on input and output ground ground for electrical isolation, divided into the segregation and isolation transformer. Not isolate the input and output are interlinked, no isolation measures, common DC/DC converter is mostly of this type.