Unlike an optocoupler-based solution, which requires several external components to improve performance, provide bias, or limit current, the ISOW1044 device only requires external bypass capacitors to operate as shown in above application diagram.

Because of very-high current flowing through the device V_DD and V_ISOOUT supplies, higher decoupling capacitors typically provide better noise and ripple performance. Although a 10-µF capacitor is adequate, higher decoupling capacitors (such as 47 µF) on both the V_DD and V_ISOOUT pins to the respective grounds are strongly recommended to achieve the best performance.