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LMG5200的AGND与PGND可否接在一起?

Other Parts Discussed in Thread: LMG5200

最近在考虑使用LMG5200做buck电路:输入电压48v,输出可调,功率不到100瓦。看到评估板上AGND与PGND是分离开的,不知道这两个地接在一起是否可行?

  • 数据手册的layout中有说明,不能将AGND与PGND直接接在一起。
    Carefully consider the AGND connection of LMG5200 device. It must NOT be directly connected to PGND so
    that PGND noise does not directly shift AGND and cause spurious switching events due to noise injected in HI
    and LI signals.