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3895控制下移相全桥的同步整流管电流流向

Other Parts Discussed in Thread: UCC3895

问题1:

如上图所示,移相全桥的同步整流管导通时,电流为什么不是从寄生二极管DSR上流过,而是从MOS管的沟道流过?

问题2:

用UCC3895控制移相全桥AB是滞后臂,CD是超前臂?

问题3:

UCC3895关于死区时间的引脚电阻RCS跟RADS该如何计算?  (新人求解,多多包涵)