The article shows a 32V, 3 amp SMPS circuit which may be particularly utilized for driving 100 watt LED modules, appraised with the same specs.
The circuit of the proposed 32 V, 3 amp smps LED driver may be comprehended with the assistance of the accompanying focuses:
The mains voltage is redressed and separated by the extension system and the related channel capacitor C1. This amended 310 V DC goes through R1, R2 and triggers T1 into conduction.
T1 switches ON and pulls this DC to ground through the 30 + 30 essential winding affecting a strong pulse through this winding furthermore over the lower helper winding.
This pulse over the helper winding empowers a negative pulse to be produced at the intersection of R1/R2 which quickly sinks the base commute to ground such that T1 now stop.
Meanwhile C2 energizes becoming scarce the assistant winding effect, and permits T1 with a crisp activating potential at its base.
T1 leads once more and the cycle continues rehashing at a recurrence controlled by the estimation of R2/R3/C2 which could associate with 60 kHz here.
This fast exchanging affects a relating voltage and current over the auxiliary winding which may be well more than 32V, 3amps air conditioner according to the given winding subtle elements.
The above voltage is fittingly separated by C4 and connected crosswise over R6, R7 for nourishing the shunt controller and the opto coupler stage.
R6 is fittingly balanced such that the yield voltage settles to around 32 V.
The shunt controller immediately enacts the opto on the off chance that the voltage has a tendency to transcend the set quality.
The opto thusly “inhibits” the base commute of T1 incidentally crippling the essential operations until the yield potential is restored to the right esteem, the opto now discharges T1 and permits the operations to work regularly, just until the yield rises again to start the opto once more, the procedure continues rehashing guaranteeing a steady 32 V at the yield, for driving the 100 watt LED module securely
Instructions to Wind the Ferrite Transformer
The transformer is wound with a EE ferrite core having a focal cross sectional territory of no less than 7 square mm.
Alluding to the figure, the upper two essential winding are made up 30 turns of 0.3 mm width super enameled copper wire.
The lower primary auxiliary primary winding comprises of 4 turns of the same wire as above.
The auxiliary is twisted with 22 turns of 0.6mm super enameled copper wire.
The techniques are as per the following:
In the first place start winding the upper 30 turns, secure its finishes on the bobbin leads by patching, and put a thick layer of protection tape over these turns.
Next, wind the optional 22 turns and bind its end terminals on the opposite side of the bobbin leads, put a layer of thick protection tape.
Over the above layer begin winding the helper 4 turns and as above secure the finishes fittingly on the essential side leads of the bobbin, again put a few layers of protection over this,
At last, wind the second 30 essential turns beginning from the past 30 turn end, and secure the end more than one of the leads of the bobbin on the essential side.
Spread the completed the process of twisting with extra layers of protection tapes.
Verify you recall the ended leads appropriately so you don’t make wrong associations with the circuit and reason a conceivable flame peril.
Every one of the 1 watt, CFR
R1 = 10E
R2 = 1M
R3 = 470E
R4 = 100E
Each of the 1/4 watt MFR 5%
R5 = 470E
R6 = preset 22k
R7 = 2k2
C1 = 10uF/400V
C2 = 2.2nF/250V
C3 = 220pF/1kV
C4 = 2200uF/50V
D1 -D4 = 1N4007
D5, D6 = BA159
shunt controller = TL431
opto = 4n35
T1 = MJE13005