multi output dc to dc converter lm2596

Posted on Feb 5, 2014

This is the circuit diagram of DC to DC converter based LM2596, the circuit has a single input supply and multiple voltage outputs. The circuit has an input voltage range of 15V to 40V. It has 5 outputs: 3. 3V at 1. 5A; +12V and ’12V at 50 mA each; and +5V and ’5V at 50 mA each. The 3. 3V, +5V and ’5V outputs are regulated with ±5% accuracy o

multi output dc to dc converter lm2596
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ver line and load variations. The +12V and ’12V outputs are regulated with ±20% accuracy. A typical application of this circuit is where the 3. 3V output provides the power to the main circuit which is 3. 3V logic, the ±5V outputs power the 5V logic and ±12V outputs provide the bias supply of op-amps. The efficiency of the circuit with full load at all outputs is 75%. The ripple voltage across the 3. 3V output is less than 20 mV and that across the ±12V outputs is less than 30 mV. The ripple across the ±5V is less than 10 mV.

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