• ADuM5230: FAQ

    FAQ

  • ADuM5230 PWM inputs hysteresis.

    Q 

    The block diagram (figure 1) on the ADuM5230 datasheet shows the PWM inputs as
    Schmitt-trigger types . The specifications (table 1) do not mention any
    hysteresis for a Schmitt-trigger. Are the inputs Schmitt-trigger types?

     

    A 

    The inputs are not…

  • ADuM5230 no output voltage (Viso)

    Q 

    In a new product we use the driver ADuM5230ARWZ and we have on some devices no
    output voltage (Viso).

    Ours values of resistors for Vadj are Upper=0ohm and Lower=10kohm, can the
    reason be? In datasheet I am not sure that we can use UPPER/LOWER…

  • Why is there a minimum power on slew rate of 400V/ms on ADuM5230?

    Q 

    Why is there a minimum power on slew rate of 400V/ms specified in page 5 of
    ADuM5230 datasheet
    and not on other isopower parts?

     

    A 

    The minimum slew rate in the isoPower is because of an issue with starting up
    voltage references.  If the input power…

  • ADuM5230 Faults

    Hi,

    I am working on a project in which we need to drive a 3-phase PMSM. The frequency of the application is 8.138 kHz and the bus voltage is 270Vdc.  My colleagues used three Adum5230s to drive the six IGBTs in the inverter. The first prototype had worked…

  • Adum5230 faults

    Hi,

    I am working on a project in which we need to drive a 3-phase PMSM. The frequency of the application is 8.138 kHz and the bus voltage is 270Vdc.  My colleagues used three Adum5230s to drive the six IGBTs in the inverter. The first prototype had worked…

  • ADUM5230 Undervoltage Lockouts

    The ADUM5230 has several undervoltage lockouts. One of these requires VDDB to be at around 12-18v for the lockout to be disabled. I only require the high side of the driver, and so do not need to use VDDB/VOB/GNDB. Does the rest of the chip function …

  • ADUM5230

    My aim is to switch a pair of FET's between 90V and 0V. Our requirement is to
    switch it and hold the mentioned levels at the output (infinitely).     kindly check the circuit
    which i designed for the same function.    Please confirm whether this arrangement…

  • can ADuM5230 be used to drive IGBT FS450R12OE4 ?

    HELLO,

      I  want to use ADUM5230 IN  AC inverter for motor driving. Power stage is IGBT FS450R12OE4. QG=3.30uC @VGE=-15V…+15V,Cies=28.0nF,Cres=1.55nF, f=10kHz。

    RGint=1.7Ω  IC nom = 450A。

      My question is : use the buffer configuration in Figure…

  • ADUM5230 "output short-circuit pulsed current" "sourcing"  and "sinking" 

    I wants to use ADUM5230 with AUIRGB4062D1 in new device (AC 3-phase  motor converter, 100...350V in dc power line).  Max switching frequency: 20 kHz. Gate capacitance: about 1,5 nF   Questions: 1. Can I use  ADUM5230 with AUIRGB4062D1 without output buffe…