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dirace
Joined: 12 May 2001
Posts: 54
Helped: 1
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 14 May 2002 21:52 Req:Digital adjustable power supply |
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I need to know how can i digital abjust the Vout of a power supply basted on voltage regulators like LM317.Any Shematics?
THNX
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Moss
Joined: 24 Jul 2001
Posts: 187
Helped: 7
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| 14 May 2002 23:31 |
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| Simple way to control your power supply is shown it LM 317 datasheet. You can change transistor with integral DAC.
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dirace
Joined: 12 May 2001
Posts: 54
Helped: 1
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| 15 May 2002 14:35 |
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| 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.
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swilly
Joined: 09 Oct 2001
Posts: 44
Location: Argentina
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| 11 Jun 2002 4:06 |
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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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