1. The chip input voltage range is wide, the general chip is about 10-30V, this 4-60V
2, the input voltage range of the whole machine is low, the general power input voltage range of the whole machine is 100-400V, and the input voltage range of the whole machine made by this chip is also 4-60V
3, the input and output are not isolated, the general switching power supply input and output are isolated, and the power input and output made by this chip are not isolated, that is, there is a common ground
4, the drive is not the same, the general switching power supply chip output driver is to drive N-type MOS tube, this output is to drive P-type MOS tube