Innovative replacement of switching transformer structure

Innovative replacement of switching transformer structure   From a structural point of view, the switching transformer structure has undergone three innovations: At the beginning, it is a planar transformer, which is 80% smaller in mass and volume than the traditional three-dimensional transformer, and has formed products in the range of 5W ~ 20kW, 20kHz ~ 2MHz power and working frequency, and the typical efficiency can reach 98%; The second evolution is the chip transformer, this structure is particularly suitable for low voltage and high current, the working current can be more than 100A, and further reduce the thickness of the device. The structure is generally composed of a secondary winding and a plurality of magnetic cores, replacing the previous one core and a plurality of windings. The primary windings of these magnetic cores are connected in series to meet the requirements of step-down isolation. The internal temperature rise is lower than the flat transformer, only ab…