Post Go back to editing

# (ADuM12xN)How to calculate the supply current when each channel's duty and frequency are not same.

Hi !

Can you give us same kind of power supply formulas for ADuM12xN?

We want to know this because one of our customer is thinking to change  ADuM321x to ADuM12xN.

Best regards

Kawa

Parents
• Hi Kawa:

Let me check it with designer and get back to you later

regards

Chris

• Hi Chris-san

I got it.

Thank you

Kawa

• Hi Kawa:

IDD1 = IDD1(Q) + (2.8mA * D_A + 0.01mA/Mbps * F_A) + (2.8mA * D_B + 0.01mA/Mbps * F_B)

IDD2 = IDD2(Q) + (0.02mA/Mbps * F_A)+ (0.02mA/Mbps * F_B)

IDD1 = IDD1(Q) + (2.8mA * D_B + 0.01mA/Mbps * F_B) +(0.02mA/Mbps * F_A)+

IDD2 = IDD2(Q) + (0.02mA/Mbps * F_B)+ (3.4mA * D_A + 0.01mA/Mbps * F_A)

The formula is similar with ADuM14x because they are using the same coil architecture. the difference is number of channels and directions.

Regards

Chris

• Hi Kawa:

IDD1 = IDD1(Q) + (2.8mA * D_A + 0.01mA/Mbps * F_A) + (2.8mA * D_B + 0.01mA/Mbps * F_B)

IDD2 = IDD2(Q) + (0.02mA/Mbps * F_A)+ (0.02mA/Mbps * F_B)

IDD1 = IDD1(Q) + (2.8mA * D_B + 0.01mA/Mbps * F_B) +(0.02mA/Mbps * F_A)+

IDD2 = IDD2(Q) + (0.02mA/Mbps * F_B)+ (3.4mA * D_A + 0.01mA/Mbps * F_A)

The formula is similar with ADuM14x because they are using the same coil architecture. the difference is number of channels and directions.

Regards

Chris

Children