• ADuM3220 starting delays

    According the Table 12 of the Rev.C datasheet, the "Outputs return to the input
    state within 1us of VDD2 power restoration". However, I'm experiencing a delay
    of about 70us with a VDD2 of 15V. Why?


    There are actually two…
  • ADuM3223 vs ADuM3220

    We have used ADUM3223 to drive high Voltage output, but it needs two different
    supplies (15V). Your colleague at Embedded World 2014 recommended ADuM3220. But
    I didn’t find the work voltage of ADuM3320. Could you please tell me, if this

  • Testing the ADUM3220/3221


    I am designing an electrical stimulator to produce two consecutive peaked waveforms of length roughly 100us at 300 volts. Each peak pair shall be 10ms after the previous. I have chosen the ADuM3220 chip, a transformative isolator, because of…

  • H-bridge with ADuM3220

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

  • ADuM3220 - using the shoot-through protection

    I want to use the ADuM3220 shoot-through protection in an unusual way:

    This is only one part of a stepper motor driver.

                        [note that the full H-Bridge & load is omitted [for now] on the schematic]

    I have ONLY one signal, so I invert it for…

  • ADuM3220 driving H-bridge N-mosfet


    I am having problem when driving my half bridge of N-mosfet using ADuM3220. Hope to have advice from here.

    I would like to ask whether:

    - Is there any problem with the circuit?

    - Is it a must to add a diode between the gate and source of the…

  • ADUM3220 Gate driver floating supply


    I have a question about a testing set up that I am implementing using ADUM3220 evaluation board. I have a full bridge of MOSFETs to implement LLC Converter, the input DC bus can go up to 400 v the output after the transformer is 48 v dc and the power…

  • ADUM3220: There is no Junction to Ambient thermal resistance given in datasheet

    There is no Junction to Ambient thermal resistance given in ADUM3220 datasheet?


    The junction to ambient thermal resistance for ADUM3220 should be similar to
    the ADuM5240 which is in the same package at 80C/W.
  • ADuM3220: What is the practical use of the two Junction to Case thermal resistance values?

    There are two Junction to Case thermal resistances but what is the practical
    use of these?


    The junction to case thermal resistance can be used in applications where the
    case temperature is known. There are two junction to case thermal…
  • RE: High Voltage High Frequency H-Bridge

    cmjosak: The limit on switching frequency for the ADuM7234 and ADuM3220 is about 1MHz, and will be also limited by the power dissipated by the part determined by the switching frequency and amount of gate charge and voltage, which is shown for various…