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The charger/ adapter application includes the two functional sections of "primary side switch" and “Secondary side synchronous rectification"

● Primary side switch:

  1）Common charger:  drive by high voltage DMOS

  2）Quick charger:  the main switch below 18W adopts planar MOS, and that over 18W adopts SJ MOS

● Synchronous rectification：driven by medium and low voltage MOS, SGT MOS is preferred

Secondary side sampling function of the charger/ adaptor: driven by reference power supply circuit