Forum: µC & Digital Electronics The Introduction of LM2596 Step Down Power Module DC-DC Converter

Author: Peter Carless (Company: adaf) (petercarless)
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1.With voltage meter display;voltage meter error of ±0.1V;the range 
among 0~40V. (note: to ensure the voltage meter accuracy, please make 
sure that the input voltage is 4.2V or more).
2.Voltage meter can be closed by long pressing button(minimum power 
3.The range of input voltage is 4.2~40V and output voltage is1.25V~37V 
,which are continuously adjustable.(The input voltage must 1V higher 
than output voltage)
4.Maximum output current can be as high as 3A,but normal and stable 
working current is2A.
5.Use 150KHZ internal oscillation frequency,which is belong to the 
second generation of switch voltage regulator with low consumption and 
high efficiency.

Where to use:1.experiment teaching 2.temporarily set up power supply in 
the outdoor 3.car(audio, electric fan)power supply

What is special:LM2596 Step Down Power Module design based on XL2596 as 
main control chip,attached digital tube to display voltage at that time 
to highlight smart function. What’more, schottky diode provides 
protection of reverse connection.

Testing Results
Because the starting voltage is 4.2V, when testing you should set the 
input voltage 4.5V and the output voltage 1.4V. ICStation Team test it 
on the digital oscilloscope and the result shows that the actual testing 
of the product is in accordance with the description.


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