• ADUM4121-1

    Can ADUM4121-1 gate drive handle 100% duty cycle?

  • ADuM4121-1 Spice Model

    Hello,
    Is there Spice-Model for ADuM4121-1? I've tried with help of "IBIS2SPICE" the IBIS Model transfered into Spice-Model. However, there is still a Problem, when I use the Spice-Model in LT-Spice, the Model can not be recognized. …
  • adum4121-1 voltage

    Hi,

    Why ADUM4121-1TRIZ-EP can not be driven by 5 volts?

    I asked this question because in datasheet It can be.

    Thank you in advance for your time and consideration.

    Regards

  • RE: (ADuM4121)How fast can ADuM4121 detect mirror Clamp?

    Hello Kawa,

    1) The Miller Clamp on the ADuM4121 is set to 2 V typical, and cannot be changed without a silicon revision.

    2) On the falling edge of the gate drive, once the output voltage has fallen below the Miller Clamp threshold (1.75 V min, 2.25 V…

  • 关于ADUM4121

    采用ADMU4121来驱动氮化镓半桥电路,采样的全隔离的驱动方案,但是现在上管的驱动电压随输入电压的升高而升高,不知道为啥?是因为驱动芯片的原因吗?上管是将5V的输入电压由B0515隔离芯片转化为隔离的15V在由SY8120降压到6V给上管的ADUM4121供电,但是这个6V电压在随主电路输入电压的升高而升高,有人指点一下吗?

  • RE: ADUM4121-1BRIZ Gate Driver

    Hello,

    The ADuM4121-1 is intended to be used as a gate driver. The gates it is intended to drive are capacitive in nature, like MOSFET and IGBT gates, where once the gate charge is delivered, the gate driver doesn't need to provide more current. The…

  • ADuM4121 IBIS Moel or SPICE Model

    My customer is seeking the IBIS model or SPICE model of ADuM4121.
    I looked up the ADuM4121 product page and found an IBIS model.
    However, there is only inputbuffer in this model.


    I searched for "Engineer zone", but I could not find the answer.…

  • RE: Miller clamp on the ADuM4121

    No, If the Miller clamp is not being used, it is recommended to short it to GND2.

    However it should be noted that the ADuM4120 has similar performance to the ADuM4121 and has a smaller package so could be used in place. 

  • RE: ADUM4121-ARIZ

    Hello,

    The VI+ and VI- pins on the ADuM4121 allow you to drive the inputs a few different ways.

    1) The first, and most intuitive is to drive each ADuM4121 with positive logic. To do this, connect each VI- to GND1. Then, with two different PWM signals…

  • ADUM4121 Peak Current

    Hi

    I have a question ADUM4121 Peak Current.

    ADuM4121 P 10,Figure 17
    shows peak output current and Vdd2.
    It assumes gate resistance of 15 Ω (on resistance) and 2 Ω (off resistance)
    I'd like to use peak current at…