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Need MOSFET solution for converting 12V/4A supply to 7V/4A

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vaibhav.k

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Hi friends,
i am trying to convert 12V/4 Amp supply to 7V/4 amp.I will be using both supply after conversion i.e 12V and 7 Volt also.This supply is going to use supply for thermal printer.Can anybody provide MOSFET based solution .
 

Re: Regulation

If you derive your 7V 4 amp based supply from the 12V 4 Amp supply then 1 thing is you wont be able to load both of them at 4 amp simultaneously. But anyway, you can make a simple Feedback LDO using a reference opamp and MOSFET to get 7V from 12V. The MOS should be rated greater than 12V 4 Amp of course.
 

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    vaibhav.k

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Regulation

Could u send me diagram of it.
 

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