In recent years, as the problem of energy shortage has become more and more serious, and the demand for energy in emerging industrial countries has increased greatly, under such circumstances, energy conservation has become an important issue. Therefore, the US Department of Energy and environmental protection have begun to have power products. The efficiency requirement, from no-load loss, and then 20% to 100% of the load efficiency requirements of more than 80%, the times are progressing, the energy efficiency standards are correspondingly increasing, this is an inevitable trend. The CM6901 + CM6502S 90+ uses the SRC architecture and has some essential differences from the current LLC architecture: SRC design is simple (single resonance point), LLC design is difficult (double resonance point), sRC high power design, no need to mention High resonance point frequency, when the LLC high power design, the first resonance point frequency needs to be specially increased to maintain the second resonance The voltage gain between the points is >1. The switching frequency of the SRC is lower at the same power, the Turn-off loss is lower, the switching frequency of the LLC is higher at the same power, the Turn-off loss is higher, and the SRC is easy to achieve synchronous rectification. Improve efficiency, LLC realizes synchronous rectification difficult, low efficiency, SRC transformer design is easy, low loss, LLC transformer design is difficult, need to add air gap loss is high, SRC high power design, high Q value, LLC high power When designing, the Q value is lower. The following is a block diagram of the current mature 90+ solution and the main schematic diagram; For more details, please contact our business staff. |
Sale.