Hello,
The description of 24v13 and 24v21 motor drivers states “For good performance, it is very important to install a large capacitor across the motor supply and ground close to the motor driver. We generally recommend using a capacitor of at least a few hundred μF and rated well above the maximum supply voltage; the required capacitance will be greater if the power supply is poor or far (more than about a foot) from the driver, and it will also depend on other factors like motor characteristics and applied PWM frequency.”
Can you please be a bit more specific about “at least a few hundred μF”? In my application (a RC model boat), the battery is not far away, typically about half a foot and is a 6S LiPo (25.2V or 25.8V fully charged).
I have complete freedom about the PWM frequency so which value should I choose in order to minimize the required size for the additional capacitor?
Finally, my load is a MHD (MagnetoHydroDynamic) drive, not a classical brushed motor, and it has no inductive component. Does this “relax” the need for an additional capacitor?
Thanks.
Best regards,
Georges.
