Voltage Regulator Circuit for High Current Rated Loads (3A)
Some ELV projects require higher current than usual 500mA~1A rating.
(Eg : Servo motor control and multiple GSM module interacting with Arduino)
This is a LM2596 5.0 voltage regulator circuit with high efficiency and high current output than previously used LM7805 IC.
Respectively ,by using LM2596 12.0 IC You can get regulated 12VDC output from a unregulated 7-40VDC supply.
In this project we have considered how to get regulated 5VDC,3A output from unregulated 12VDC supply.
Note: The IC is dissipating energy loss in the form of heat.Hence a good heat sink is required in order to protect the IC from excessive heat.Otherwise the IC will burned out when the load current requirement is high.
Transformer should be enough to supply 3A rating.
The LM2596 IC Specification are as follows:
3-A output load current
Input voltage range up to 40 V
Requires only four external components
Excellent line and load regulation specifications
150-kHz Fixed-frequency internal oscillator
TTL shutdown capability
Low power standby mode, IQ, typically 80 µA
High efficiency
Uses readily available standard inductors
Current-limit protection
Tools And Components
1 X LM2596 5.0 IC1 X 230VAC to 12VAC Transformer
4 X 1N4007
1 X 1N5824
1 X 470uF, 50V Capacitor
1 X 220uF, 10V Capacitor
1 X 33uF Inductor
Connecting Wires
Soldering Iron
Connecting Components
For Regulated 5VDC Output :
C1 = 470uF, 25VC2 = 220uF, 10V
L1 = 33uH
For Regulated 12VDC Output :
C1 = 220uF, 50VC2 = 100uF, 25V
L1 = 66uH
LM2596 Based 4 USB slot Charger Unit
Safety First !
Always Connect the 230VAC Main supply if you are absolutely sure that the components are connected correctly without changing polarity and short circuited the wiring.
Even if it seems nothing is wrong : DOUBLE CHECK EVERYTHING !!
Your Feedback is very important to us.
Please Leave a comment about how you feel about this project.
Post a Comment