For those who ask about the specification of this buck converter: 1. The maximum input voltage is determined by the weakest link in component, while the IRFZ44 can handle up to 55V, in this case the lowest is the LM7809 that can handle up to 35V. So the maximum input voltage is 35V. 2. The maximum current is harder to determine as it requires comprehensive analysis including each of the component max current, the wire thickness, heatsink and the ambient air (e.g. has fan or not). While a single IRFZ44 can handle up to 49A theoretically, in practice it will produce tremendeous heat and nearly impossible to achieve this current without going parallel. The number of IRFZ44 that are actually placed are 2 (not 4 as stated in 5:05). Based on overall physical appearance and circuit design I see this maximum current will be roughly 10A. 3. This is not fixed output voltage. This buck converter only uses 555 IC timer and has no feedback to re-adjust the PWM. So, if the input voltage fluctuates the output will also fluctuates. Not really a good design. It is strongly recommended to change into IC that has feedback mechanism (e.g. MP1584) so that the output will be constant (reliable) and also this buck converter is not cheap, it requires two IRFZ44 MOSFETs and one medium-sized inductor, both are moderately expensive. So, it is kind of waste of money if the output is dependent on the input.
This circuit is a little bit strange. The output is not related to ground. It is related to Vcc. If you need to work in a system where the subsytems are related to ground the circuit cannot be used. But I think it is easy to modify your circuit in a way, that you can use a p-MOS power MOSFET, so you can turn the power part into ground relation.
The current in the inductor in a buck converter never changes direction. The only exception to this is if the converter is running in discontinuous inductor current mode where the inductor is fully discharged each cycle. In that case there can be a bit of high-frequency "ringing" but no useful energy is being delivered.
@@KiyanisLab try lionelectronic for pcb .I print them there 1 week for production and 3 day delivery. It's based in banglore .it's better than jlcpcb.there we have to pay tax
Sir, thank you very much for your useful information and teaching But my question is, can it be used as solar charge controller to charge the batteries.
mc34063 ic buck boost converter input voltage 12 output voltage 0 \50 pwm controller PC817 irf532
This is not perfect; output won't stay fixed if load is changed because you don't have any feedback. 😑
For those who ask about the specification of this buck converter:
1. The maximum input voltage is determined by the weakest link in component, while the IRFZ44 can handle up to 55V, in this case the lowest is the LM7809 that can handle up to 35V. So the maximum input voltage is 35V.
2. The maximum current is harder to determine as it requires comprehensive analysis including each of the component max current, the wire thickness, heatsink and the ambient air (e.g. has fan or not). While a single IRFZ44 can handle up to 49A theoretically, in practice it will produce tremendeous heat and nearly impossible to achieve this current without going parallel. The number of IRFZ44 that are actually placed are 2 (not 4 as stated in 5:05). Based on overall physical appearance and circuit design I see this maximum current will be roughly 10A.
3. This is not fixed output voltage. This buck converter only uses 555 IC timer and has no feedback to re-adjust the PWM. So, if the input voltage fluctuates the output will also fluctuates. Not really a good design. It is strongly recommended to change into IC that has feedback mechanism (e.g. MP1584) so that the output will be constant (reliable) and also this buck converter is not cheap, it requires two IRFZ44 MOSFETs and one medium-sized inductor, both are moderately expensive. So, it is kind of waste of money if the output is dependent on the input.
The 10k ohm resistor connected to the gate Is too hight. It would be better 100-1000 ohm
I simulated the same circuit on proteus. but it isnt changing when I change potentiometer.
Does the voltage remain constant under varying load condition?
What is the maximum output current?
i think you made buck-boost regulator circuit
I think that the title of this video should be "How to make BOOST converter", because the circuit presented in this video is a BOOST converter.
No, it's a buck converter, just a modified one with a low side Mosfet.
How much current can this circuit withstand?
5a
Will the output be stable if the input voltage vary
Please sir 2 video Attiny85 remote kit program Arduino uno
Or uc3843 boost converter video
This circuit is a little bit strange. The output is not related to ground. It is related to Vcc. If you need to work in a system where the subsytems are related to ground the circuit cannot be used. But I think it is easy to modify your circuit in a way, that you can use a p-MOS power MOSFET, so you can turn the power part into ground relation.
hi friend
can you make buck converter
with 100 volt in ,, to 58 volt out
Thanks
ok bro
Can i use my 35v smps?
The current in the inductor in a buck converter never changes direction. The only exception to this is if the converter is running in discontinuous inductor current mode where the inductor is fully discharged each cycle. In that case there can be a bit of high-frequency "ringing" but no useful energy is being delivered.
which software you used for simulation or pcb design.. ( for attached garber file in the description? )
Bro two this is a pwm circuit not buck converter only possible con buck not negative
How Ampere output?
How amp Output?
5A
tem como você faze conversor boost uc3843 120dc para 12dc ??
Thanksss
Can you make buck boost converter
soon bro
@@KiyanisLab try lionelectronic for pcb .I print them there 1 week for production and 3 day delivery. It's based in banglore .it's better than jlcpcb.there we have to pay tax
It would be better to speak in Hindi.
Sir kia aap step up module bna saktay hain.
Very nice. Can you add a constant current controller?
What is the maximum input voltage it can handle?
awesome ...thanks
How to adjust amp?
Thanks a last
Sir, thank you very much for your useful information and teaching
But my question is, can it be used as solar charge controller to charge the batteries.
No
Good projects...
Very nice 👍👍👍
Circuit and schematic diagram available?
check the description bro
@@KiyanisLab which software you used for simulation or pcb design.. for attached garber file in the description?
Sir how to control amp this circuit?
is ma nahe ha new banao ga for that
@@KiyanisLab inshaallah, waiting for this
But adding one more potentiometer to the diodes on the last part to the first potentiometer and to pin 6
Nice video. Please explain in Hindi.
Uc3843 boost converter Video
soon bro
@@KiyanisLab ok bhai
👌👍
Sir can I use lm7808
yes you can
again no schematic :(
Will it charge the smart phones with 5V 5A??.. This circuit is different from your the schematic file in description