Arduino Forum

Using Arduino => Motors, Mechanics, and Power => Topic started by: phonetic on Jun 01, 2011, 05:16 am

Title: Boost DC DC Converter 24v to 48v using Arduino as controller
Post by: phonetic on Jun 01, 2011, 05:16 am
I have a application, need to convert 24 to 48 volts, looking at a boost switch mode circuit, would the arduino work to provied PWM and Volts in & out
monitoring.
looking for Ideas
Regards
Title: Re: Boost DC DC Converter 24v to 48v using Arduino as controller
Post by: Grumpy_Mike on Dec 20, 2012, 12:26 am

I have a application, need to convert 24 to 48 volts, looking at a boost switch mode circuit, would the arduino work to provied PWM and Volts in & out
monitoring.
looking for Ideas

No bad idea. Use a proper voltage booster IC that is what they were designed for. What sort of current are you looking for, if it is heavy it is not an easy task.
Title: Re: Boost DC DC Converter 24v to 48v using Arduino as controller
Post by: Krodal on Dec 22, 2012, 04:35 am
You can buy such a thing. That is the best option.

If you just need a small current and you want to control it with the Arduino, it is possible.
For example a coil and a mosfet as the main components.
Two voltage dividers to measure the 12V and the 24V.
And a PID software control.
Title: Re: Boost DC DC Converter 24v to 48v using Arduino as controller
Post by: dhenry on Dec 23, 2012, 01:41 pm
Quote
would the arduino work to provied PWM and Volts in & out
monitoring.


Sure. A simple implentation would be to use a pin to short the coil to ground periodically - applying pwm to that pin. Lower duty cycle on that pin means higher output voltage.

A more sophisticated version would use the adc or analog comparator to detect the output voltage and based on that, output a pwm signal to ground the coil via a switch - that's effectively what a pwm controller does, in hardware. The difficulty there is the control algorithm.

Many high-end dc/dc converters are build around mcus (by Freescale). So you are onto the right track.
Title: Re: Boost DC DC Converter 24v to 48v using Arduino as controller
Post by: auyong on Jan 12, 2013, 11:02 am
Dear All,

As Mr. Krodal said that it is possible to produce a high-end dc/dc converter using arduino, I would like to ask which is the easiest way to be used since there are so many different types of dc/dc converter circuits? I am really new to dc/dc converters; thus, I would like to get some useful information from you all if I am going to produce a simple step-up dc/dc converter which can withstand 1000Watts.

Thank you for the time.

Best Regards,
Au Yong