Req:Digital adjustable power supply

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dirace

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powersupply adjustable digitally schematics

I need to know how can i digital abjust the Vout of a power supply basted on voltage regulators like LM317.Any Shematics?
THNX
 

digital adjustable power supply

Simple way to control your power supply is shown it LM 317 datasheet. You can change transistor with integral DAC.
 

digital adjustable suplly

I saw the this example but it dosent say how to calculate the resistors or what transtore to use. a also simulated the circuit with multisim and it has a strange behavior.
 

digitaly adjustable power supply schematic

Is very easy to design a digitally controlled power supply if you use this integrated circuit: OPA549
You can obtain a free sample in www.ti.com (Texas Instruments site).
You can see in the datasheet of this IC an example of a power supply that have voltage and current controls with two DACs.
 

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