H-bridge with ADuM3220

How do I drive a MOSFET H-bridge with ADuM3220s?

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  • 0
    •  Analog Employees 
    on Oct 21, 2011 6:05 AM

    Thanks,Nikolas. it seems this could work. some minimor questions:

    1. In you schematic, why the VDD2 of ADuM3220 placed in the middle is connected to the Vbridge?

    2. Is it necessary to place a 10uF cap for the VDD2 of ADuM3220? for the half bridge driver (i.e. UCC27201), it has only a cap (0.1uF or 1uF) and has a internal diode.

    3. Has this solution been already verified on the power board?

    4. the current proposal for isolation and half bridge driver are 1*ADuM3210 + 2*HB driver(i.e. UCC27201) for two control signals or 2*ADuM3210 + 2*HB driver for four control signals. What are the advantage of ADuM3220 solution compared with current solution? Cost, size or performance?

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  • 0
    •  Analog Employees 
    on Oct 21, 2011 6:05 AM

    Thanks,Nikolas. it seems this could work. some minimor questions:

    1. In you schematic, why the VDD2 of ADuM3220 placed in the middle is connected to the Vbridge?

    2. Is it necessary to place a 10uF cap for the VDD2 of ADuM3220? for the half bridge driver (i.e. UCC27201), it has only a cap (0.1uF or 1uF) and has a internal diode.

    3. Has this solution been already verified on the power board?

    4. the current proposal for isolation and half bridge driver are 1*ADuM3210 + 2*HB driver(i.e. UCC27201) for two control signals or 2*ADuM3210 + 2*HB driver for four control signals. What are the advantage of ADuM3220 solution compared with current solution? Cost, size or performance?

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