• ADuM4121 Bootstrap setup

    I am trying to design the circuit referenced in the datasheet.

    Any guidance on selecting Rboot, Dboot, D1 and D2, and Rgaoff and Rgboff?

    I am using 4 of these parts in a Half Bridge circuit.  Vbuss is 340VDC and VDD2 is 15VDC.

    Thanks,

    Rich

  • ADuM4121 Miller clamp pin leakage current

    Hello,

    I am wondering what the leakage current into the miller clamp pin is on the ADuM4121. I am unable to find it in the datasheet.

    Thanks,

    Tyler

  • 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: 关于ADUM4121

    这是所有的原理图，请您指点一下。现在上管的供电一直有问题

    首先是如附件原理图中的上管的供电方案下，上管的辅助电源供电VCCH随主电路输入电压的升高而升高，由6V逐渐升高至9V左右不再变化。
      然后我们怀疑是上管的SY8120有问题，然后更换了供电方案，使用B0509将输入5V升压至隔离9V然后使用线性稳压器L7806将9V降压至6V给上管的ADUM4121供电，但是上电测试过程中发现输入电压上升至100V左右时上管的驱动信号和上管的供电电源VCCH开始同步的抖动。当上电至127V时上管的供电电源VCCH会有短暂的电压跌落为0的情况…

  • ADUM4121电源问题

    ADUM4121的左右供电分别是VDD1、DGND和VDD2、PGND，如果DGND和PGND通过零欧电阻单点连接会有什么影响吗？就相当于ADUM4121左右的地不是完全隔离的。

  • ADUM4121-ARIZ

    Hi,

    I'm not able to understand how to use Vi+ and Vi- pins of the driver.

    GaN Systems has a half bridge eval board based on ADUM4121A. They have following connections- 

    Is it necessary to provide a complementary input to each driver? Can I just…

  • Miller clamp on the ADuM4121

    Do I have to connect the Miller clamp on the ADuM4121?

  • RE: ADuM4121 Max Switching Frequency

    Hi, thank you very much for clarification!

  • ADUM4121 （Vout does not turn off normally）

    I bought a GaN driver (ADUM4121) from ADI company for GaN short circuit test.

     Figure 1 in the attachment is the schematic diagram of short circuit test. The principle of the whole short circuit is: first supply power to the left and right of adum4121…

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

    Hi !

    I was reading ADuM4121 datasheet.

    I understood that ADuM4121 can detect mirror clamp at 2V.

    So my questions are these.

    Q1)

    Is it possible to change threshold voltage?

    I think for GaN, 2V is too high.

    Q2)

    If the Vclamp goes lower than 2V, how fast…