# DC Motor controller

#### Raj Overseas

I want to design 0-50 V 10 amps DC motor controller from Mains 230V 50 Hz supply based on PWM circuit

#### ron simpson

I see many options.
>Build a 230vac to (0-50V dc 10A) power supply.
or
>Get a 230vac to 50V supply and add a 50V 10A motor controller. (make two small projects)

#### Raj Overseas

Do you have 50V 10 amps SMPS supply design

#### ron simpson

Do you need to brake the motor?
Do you need to reverse the motor?

#### Raj Overseas

No I donot need brake or motor reversing

#### ron simpson

I donot need brake or motor reversing
Make a 60V to 0-50V 10 or 20A buck. You probably can't really make a 0-50V so 0% duty cycle = 0V, and make the supply stable from 5-50V.
Is the 10A normal running current with a stall current of 30A? or is the stall current 10A?

#### Raj Overseas

10 amps is normal running current
can u please suggest suitable o/p circuit we can build micro controller based PWM om our own

#### ron simpson

I have not used this part but it looks simple. (uses a p-fet) But it looks like it would take 60 to 70V and buck it down to run the motor. It the running current is 10A you probably need a 20 to 30A supply. That might be too much for a p-MOSFET.

Here is another higher current option. N-MOSFETs Should run with less losses. I have not used this exact part but parts like this.

#### munyua44

you need to start by designing a power supply system that can Get a 230vac to a 50V supply and add a 50V 10A motor controller.

#### ron simpson

10 amps is normal running current
So the start up current could be 30A? or more.

#### simon mugo

so many options are available and my best and simplest option is building a power supply system that has variable output from 0 to 50 volts. So you need to regulate the voltage from the 240vac to the required variable output.