• RE: (ADuM4120)How fast can ADuM4120 move?

    Hello Kawa,

    There isn't an exact maximum frequency that the ADuM4120 can work at, but there are some limitations:

    1) There is a minimum pulse width. This applies to both the on and off portions of the cycle.

    2) Higher frequency operation will have…

  • RE: “芯”来乍到,求赞、求围观!



    ADuM4120和ADuM4121系列利用ADI成熟的iCoupler 隔离技术,结合高速CMOS和与单芯片变压器技术,可实现超低传播延迟,且不影响共模瞬变抗扰度…

  • RE: ADI芯情2017大回顾,有奖认领属于你的“好芯事”

    小型隔离式栅极驱动器ADuM4120 /1,提供下一代电源开关技术解决方案

    ADuM4120 /1 系列可实现超低传播延迟,且不影响共模瞬变抗扰度 (CMTI) 性能。 ADuM4120 /1 可在高温范围和高工作电压下工作,非常适合改进太阳能逆变器、电机控制器和工业逆变器应用的能源效率和时序性能稳定性。




    ADUM4120 VDD2 has been tested in 250mA and 1A.

    we are evaluating this P/N, for 2A+ current ability, and Switching Frequency 200Khz. Solar PV application.

    Could you tell me the power supply for VDD2 of ADUM4120 recommended value? 250mA?

    we use 16pcs…

  • Compliance of IEC61010-1 and VDE0884-10



    I am confused about the safety ratings of the part ADuM4120. Its datasheet states reinforced insulation for a working voltage of 400Vrms to meet IEC61010-1, while the rating for reinforced insulation with VDE0884-10 is 849Vpeak.



  • (ADuM4120)How did you improve isolation voltage?

  • RE: Question about ADuM3221A

    Hello Kazu,

    The schematic you have drawn is correct, and a possible implementation of driving GaN. I don't recommend using the ADuM3221, though, for a few reasons:

    1) The CMTI is only 25 kV/µs, and GaN usually switches at a very fast slew rate

  • RE: ADUM3123 Fsw maximum question?


    The ADuM3123 is capable of operating at 6.78 MHz, but there will be significant self heating within the IC. The ADuM3123 also has a minimum pulse width of 50 ns, so if the design requires pulses shorter than that, there may be an issue.

    The ADuM3123…

  • RE: ADUM4136 weird behavior

    Yes, I agree that a gate driver must be robust, even in noisy environments. This issue is very important to us and we will continue working on it to find a solution. I appreciate all the information you've supplied.

    We have performed EFT testing on…

  • RE: [ADuM7223]How to design High-Side voltage when MOSFET gated 200V?


    Yes, the Vgs voltage relative to the source node can be run negative since GNDa is floating. This is one of the advantages of digitally isolated gate drivers as compared to high-voltage level shifters. The VDDA/VOA/GNDA pins are on one silicon…